JP2016171601A - Communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for a communication device to appropriately execute communication with a portable terminal.SOLUTION: Upon receiving NFC information by using an NFC I/F (YES in S2), an MFP uses the NFC information to determine whether the MFP 10 and a portable terminal currently belong to the same network (S6). Upon determining that the MFP and the portable terminal do not currently belong to the same network, the MFP connects to the portable terminal (S18) and uses a wireless LAN I/F to execute a data communication process (S20). On the other hand, upon determining that the MFP 10 and the portable terminal currently belong to the same network, the MFP executes a data communication process using the wireless LAN I/F via the same network (S20).SELECTED DRAWING: Figure 2

Description

  The technology disclosed in the present specification relates to a communication device for executing communication of target data with a portable terminal.

Patent Documents 1 and 2 disclose a technique for two wireless communication apparatuses to perform wireless communication. In Patent Documents 1 and 2, the two communication devices are short-range wireless communication (that is, NFC (Near Field
Communication of wireless setting is performed according to (abbreviation of communication) wireless communication according to the method). The above wireless setting is a setting for executing wireless communication according to a communication method (for example, IEEE 802.11a, 802.11b) different from the NFC method. Thus, the two communication devices can execute wireless communication according to the wireless setting.

JP 2007-166538 A JP 2011-146991 A

"Wi-Fi Peer-to-Peer (P2P) Technical Specification Version 1.1", Wi-Fi Alliance, 2010

  In the present specification, a technology for a communication device to appropriately execute communication with a mobile terminal is provided.

  The technology disclosed by this specification is a communication device. The communication apparatus includes a first type interface, a second type interface, and a control unit. The first type interface is an interface for performing communication with the mobile terminal. The second type interface is an interface for performing communication with the mobile terminal. The communication speed of communication using the second type interface is faster than the communication speed of communication using the first type interface. The control unit includes a reception unit, a determination unit, and a communication execution unit. The receiving unit receives specific information from the mobile terminal using the first type interface. The determination unit determines whether or not the communication device is currently in a communicable state in which communication of the target data with the portable terminal can be executed using the second type interface. When the communication execution unit determines that the communication device is not currently in a communicable state, the communication execution unit performs a specific process for changing the state of the communication device to a communicable state, and then uses the second type interface. Execute communication of the target data with the portable terminal. When it is determined that the communication device is currently in a communicable state, the communication execution unit executes communication of the target data with the portable terminal using the second type interface without executing the specific process.

The communication device changes the state of the communication device to the communicable state by executing a specific process when the current state of the communication device is not communicable using the second type interface. Thereby, the communication device can execute communication of the target data with the portable terminal at a relatively high communication speed using the second type interface. On the other hand, when the current state of the communication device is a communicable state using the second type interface, the communication device uses the second type interface to perform comparative processing without executing the specific process. The target data can be communicated with the mobile terminal at a very high communication speed. According to this configuration, since the communication device can determine whether or not to execute the specific process according to the current state of the communication device, the communication device can appropriately execute communication with the mobile terminal.

  Whether the communication device is currently in a communicable state by determining whether the mobile terminal currently belongs to a specific network to which the communication device currently belongs, using the specific information It may be determined whether or not. The specific network may be a network for the communication device to perform communication using the second type interface. According to this configuration, when both the communication device and the mobile terminal currently belong to a specific network, it is not necessary to execute the specific process. Thereby, the communication apparatus can perform communication of the target data with the mobile terminal at a relatively high communication speed without executing the specific process.

  The second type interface may be an interface for the communication device to perform specific wireless communication. The specific wireless communication may be wireless communication performed by the communication device and the mobile terminal without using an access point different from that of the communication device and the mobile terminal. The specific process may include a process for the communication device and the portable terminal to execute specific wireless communication using the second type interface. When it is determined that the current state of the communication device is not in a communicable state, the communication execution unit executes a specific process and then uses the second type interface to specify a specific wireless connection between the portable terminal and the target data. Communication may be performed. According to this configuration, the communication device can execute communication of the target data with the portable terminal without using the access point.

  The communication device has a plurality of states including a master station state that functions as a master station of a wireless network, a slave station state that functions as a slave station of the wireless network, and a device state that is different from the master station state and the slave station state. It may be selectively operable in any of these states. The communication device may be capable of executing specific wireless communication via the wireless network by operating in one of a parent station state and a child station state in the wireless network. The communication execution unit determines that the communication device is not currently in a communicable state, and the communication device currently belongs to the first wireless network for executing the specific wireless communication. You may perform the specific process which transmits a 1st wireless setting for a portable terminal to belong to a 1st wireless network to a portable terminal using a 1st type interface. The communication execution unit determines that the communication device is not currently in a communicable state, and the communication device performs specific wireless communication when the communication device is in the second case that does not currently belong to the first wireless network. A specific process for newly constructing a second wireless network to be executed, to which the communication apparatus and the portable terminal should belong, may be executed. According to this configuration, when the current state of the communication device is not in a communicable state, the communication device performs a specific process so that the communication device is portable via the first wireless network to which the communication device currently belongs. Communication of target data with the terminal can be appropriately executed. In addition, when the communication device does not currently belong to the wireless network, the communication device can appropriately perform communication of the target data with the mobile terminal via the newly constructed second wireless network.

In the first case, the communication execution unit may execute a specific process of transmitting the first wireless setting to the mobile terminal when the communication device is operating as a master station state in the first wireless network. . In the first case, the communication execution unit may not transmit the first wireless setting to the mobile terminal in a specific case where the communication device is operating as a slave station state in the first wireless network. According to this configuration, when the communication device is operating as a master station state in the first wireless network, the communication device is connected to the mobile terminal via the first wireless network to which the communication device currently belongs. Then, communication of target data can be appropriately executed. On the other hand, the communication device can suppress the mobile terminal from participating in the first wireless network when the communication device is operating in the slave station state in the first wireless network.

  The communication execution unit performs information indicating that the communication device does not execute communication of the target data with the mobile terminal without executing the specific process in a specific case using the first type interface. May be sent to. According to this configuration, the mobile terminal can acquire information indicating that the communication device does not perform communication of the target data with the mobile terminal. Thereby, the user of a portable terminal can know that a communication apparatus does not perform communication of object data with a portable terminal.

  In a specific case, the communication execution unit may execute a specific process for newly constructing the second wireless network after disconnecting the communication device from the first wireless network. According to this configuration, the communication device can leave the first wireless network in which the communication device is operating in the slave station state, and can newly construct a second wireless network. Thereby, the communication apparatus can appropriately perform communication of the target data with the mobile terminal via the newly constructed second wireless network.

  In the second case, the communication execution unit performs the selective determination process for selectively determining whether the communication apparatus should operate in the master station state or the slave station state in the second wireless network. The communication device may execute a specific process including a process of determining that the communication apparatus should operate as the master station state in the second wireless network. According to this configuration, the second wireless network in which the communication device inevitably operates in the master station state can be newly constructed. Accordingly, the communication device can appropriately perform communication of the target data with the portable terminal by operating as the master station state in the newly constructed second wireless network.

  In the second case, the communication execution unit performs a process of executing a selective determination process for selectively determining whether the communication apparatus should operate in the master station state or the slave station state in the second wireless network. The specific process including may be executed. According to this configuration, the communication apparatus can newly construct a second wireless network that operates in either the parent station state or the slave station state. Accordingly, the communication device can appropriately perform communication of the target data with the mobile terminal by operating as the master station state or the slave station state in the newly constructed second wireless network.

  The control unit may further include a mode setting unit. The mode setting unit, in accordance with a user instruction, sets the mode of the communication device, the first mode in which the communication device can belong to a wireless network for executing specific wireless communication, and the communication device performs specific wireless communication. You may set to either mode among the 2nd modes which cannot belong to the radio | wireless network for performing. The communication execution unit changes the mode of the communication device from the second mode to the first mode when the communication device is in the second case and the communication device is set to the second mode. Specific processing for newly constructing two wireless networks may be executed. According to this configuration, when the communication device should perform specific wireless communication and is set to the second mode in which the communication device cannot execute specific wireless communication, the communication device is It is possible to change to the first mode in which specific wireless communication can be performed.

When the communication device is in the first mode, the communication device is an external device that is different from the mobile terminal and can execute wireless communication with an external device belonging to the second wireless network. Good. The communication execution unit changes the mode of the communication device from the second mode to the first mode, and performs specific wireless communication of the target data with the portable terminal via the constructed second wireless network. After that, when the external device currently belongs to the second wireless network, the mode of the communication device may not be changed from the first mode to the second mode. The communication execution unit changes the mode of the communication device from the second mode to the first mode, and performs specific wireless communication of the target data with the portable terminal via the constructed second wireless network. Then, when the external device does not currently belong to the second wireless network, the mode of the communication device may be changed from the first mode to the second mode. According to this configuration, after the communication of the target data between the communication device and the portable terminal, when the external device belongs to the second wireless network, the communication device leaves the second wireless network. Can be suppressed. On the other hand, after the communication of the target data between the communication device and the portable terminal, when the external device does not belong to the second wireless network, the mode of the communication device is changed from the first mode to the second mode. It can be changed appropriately.

  The second type interface may be an interface for the communication device to perform wireless communication of target data with the mobile terminal. The communication execution unit determines that the current state of the communication device is not a communicable state, and the communication execution unit currently belongs to a specific wireless network for performing wireless communication using the second type interface. In the case where the mobile terminal is present, a specific process for transmitting a specific wireless setting for the mobile terminal to belong to a specific wireless network to the mobile terminal using the first type interface may be executed. According to this configuration, the mobile terminal can participate in a specific wireless network to which the communication device currently belongs. As a result, the communication device can appropriately execute communication of target data with the mobile terminal via the specific wireless network.

  The communication device uses the second type interface, and the communication device and the mobile terminal execute the specific wireless communication that is executed without using the access point different from the communication device and the mobile terminal, and the access point. It may be possible to execute other wireless communication. The communication execution unit is a specific wireless setting for a mobile terminal to belong to a specific network when the communication device belongs to a specific network for executing a specific wireless communication, and includes a password Specific processing for transmitting the wireless setting may be executed. The communication execution unit may execute a specific process of transmitting a specific wireless setting that does not include a password when the communication device belongs to a specific network for executing another wireless communication. According to this configuration, the communication apparatus does not need to transmit a password necessary for belonging to the specific network to which the access point belongs to the mobile terminal.

  The second type interface may be an interface for the communication device to perform wireless communication of target data with the mobile terminal. The specific information may include a third wireless setting for the communication device to belong to the third wireless network to which the mobile terminal currently belongs. When it is determined that the current state of the communication device is not a communicable state, the communication execution unit executes a specific process for the communication device to belong to the third wireless network using the third wireless setting May be. According to this configuration, the communication device can belong to the third wireless network to which the mobile terminal currently belongs. As a result, the communication device can appropriately execute communication of target data with the mobile terminal via the third wireless network.

  The specific network to which the communication device currently belongs may be a specific wireless network. The specific information may include an identifier of the third wireless network that the mobile terminal is currently following. The determination unit confirms whether or not the identifier of the third wireless network included in the specific information matches the specific identifier for identifying the specific wireless network, so that the communication device currently belongs. It may be determined whether the mobile terminal currently belongs to a particular wireless network. According to this configuration, by comparing the wireless network identifiers, it is possible to appropriately determine whether the mobile terminal currently belongs to a specific network to which the communication device currently belongs.

  The determination unit may determine that the mobile terminal does not currently belong to the specific network when the specific information does not include the wireless network identifier. According to this configuration, it is possible to appropriately determine that the mobile terminal does not currently belong to a specific network.

  When the specific information includes terminal identification information for identifying the portable terminal, the determination unit performs communication using the second type interface, thereby identifying the terminal identification information via the specific network. Terminal identification information is obtained via a specific network by determining that the mobile terminal currently belongs to the specific network and executing communication using the second type interface. If not, it may be determined that the mobile terminal does not currently belong to a particular network. According to this configuration, it is possible to appropriately determine whether or not the mobile terminal currently belongs to a specific network.

  When the specific information includes the IP address of the mobile terminal, the determination unit executes a communication using the second type interface to perform an inquiry in which the IP address is specified as the destination. If the response from the mobile terminal is received in response to the inquiry, it is determined that the communication is possible. If the response from the mobile terminal is not received in response to the inquiry, the communication is not possible. You may judge. According to this configuration, it is possible to appropriately determine whether or not the state of the communication device is a communicable state.

  Note that a control method, a computer program, and a computer-readable recording medium storing the computer program for realizing the communication device are also novel and useful. A communication system including the communication device and the mobile terminal is also new and useful.

1 shows a configuration of a communication system. 2 shows a flowchart of communication processing executed by the multi-function device of the first embodiment. The sequence diagram for demonstrating the process which each apparatus in a 1st condition performs is shown. The sequence diagram for demonstrating the process which each apparatus performs in a 2nd condition is shown. The sequence diagram for demonstrating the process which each apparatus in a 3rd condition performs is shown. The sequence diagram for demonstrating the process which each apparatus in a 4th condition performs is shown. The sequence diagram for demonstrating the process which each apparatus in a 5th condition performs is shown. 7 shows a flowchart of communication processing executed by the multi-function device of the second embodiment. The sequence diagram for demonstrating the process which each apparatus in a 6th condition performs is shown. The sequence diagram for demonstrating the process which each apparatus in a 7th condition performs is shown. 7 shows a flowchart of communication processing executed by a multi-function device of a third embodiment. The sequence diagram for demonstrating the process which each apparatus in an 8th condition performs is shown. The sequence diagram for demonstrating the process which each apparatus in a 9th condition performs is shown. 9 shows a flowchart of communication processing executed by a multi-function device of a fourth embodiment. The sequence diagram for demonstrating the process which each apparatus in a 10th condition performs is shown. The sequence diagram for demonstrating the process which each apparatus in an 11th condition performs is shown. 9 shows a flowchart of communication processing executed by a multi-function device of a fifth embodiment. FIG. 22 is a sequence diagram for explaining processing executed by each device in a twelfth situation. 10 shows a flowchart of communication processing executed by a multi-function device of a sixth embodiment. 10 shows a flowchart of communication processing executed by a multi-function device of a seventh embodiment. The sequence diagram for demonstrating the process which each apparatus in 7th Example performs is shown.

(First embodiment)
(Configuration of communication system)
As shown in FIG. 1, the communication system 2 includes a multi-function device (hereinafter referred to as “MFP” (abbreviation of “Multi-Function Peripheral”) 10, a portable terminal 50, and an access point (hereinafter “
(Referred to as “AP”) 6 and a PC 8. The MFP 10 and the portable terminal 50 can execute short-range wireless communication. Near field communication is wireless communication according to the NFC system. In this embodiment, wireless communication according to the NFC scheme is executed based on the international standard of ISO / IEC21481 or 18092.

Further, the MFP 10 can execute wireless communication in accordance with a WiFi Direct method described later. Hereinafter, WiFi Direct is referred to as “WFD”. In WFD, IEEE (abbreviation of The Institute of Electrical and Electronics Engineers, Inc.) 80
Wireless communication is executed based on the standard of 2.11 and standards conforming thereto (for example, 802.11a, 11b, 11g, 11n, etc.). The NFC method and the WFD method (hereinafter referred to as “WFD method”) are different in wireless communication method (ie, wireless communication standard). Further, the communication speed of the wireless communication according to the WFD method is faster than the communication speed of the wireless communication according to the NFC method.

  For example, the MFP 10 can establish a WFD network by establishing a connection (hereinafter referred to as “WFD connection”) with the mobile terminal 50 in accordance with the WFD method. Similarly, the MFP 10 can establish a WFD network by establishing a WFD connection with the PC 8.

  Further, the PC 8, the MFP 10, and the portable terminal 50 can execute wireless communication in accordance with a normal Wi-Fi (for example, IEEE 802.11) method different from the WFD method. Generally speaking, the normal wireless communication in accordance with Wi-Fi is a wireless communication in which AP6 is used, and the wireless communication in accordance with the WFD method is a wireless communication in which AP6 is not used. For example, the MFP 10 can belong to the normal Wi-Fi network by establishing a connection with the AP 6 (hereinafter referred to as “normal Wi-Fi connection”) according to the normal Wi-Fi. The MFP 10 can execute wireless communication with another device (for example, the PC 8 or the portable terminal 50) belonging to the normal Wi-Fi network via the AP 6. Note that the NFC method and the normal Wi-Fi method (hereinafter referred to as “normal Wi-Fi method”) differ in the wireless communication method (that is, the wireless communication standard). Further, the normal Wi-Fi communication speed is faster than the NFC communication speed.

(WFD)
WFD is a standard established by the Wi-Fi Alliance. WFD is described in “Wi-Fi Peer-to-Peer (P2P) Technical Specification Version 1.1” created by Wi-Fi Alliance.

As described above, the PC 8, the MFP 10, and the portable terminal 50 can each perform wireless communication in accordance with the WFD method. Hereinafter, a device capable of performing wireless communication in accordance with the WFD method is referred to as “WFD-compatible device”. In the WFD standard, three states of a Group Owner state (hereinafter referred to as “G / O state”), a client state, and a device state are defined as states of a WFD-compatible device. The WFD compatible device can selectively operate in one of the above three states.

  A WFD network is configured by the devices in the G / O state and the devices in the client state. In the WFD network, there can be only one device in the G / O state, but there can be one or more devices in the client state. A device in the G / O state manages one or more devices in the client state. More specifically, the G / O state device generates a management list in which identification information (that is, MAC address) of each of one or more client state devices is described. When the device in the G / O state newly belongs to the WFD network, the device in the G / O state adds the identification information of the device to the management list, and when the device in the client state leaves the WFD network, the identification information of the device is added. Clear from management list.

  A device in the G / O state is registered with a device registered in the management list, that is, a device in a client state (that is, a device belonging to the WFD network) with target data (for example, in the network layer of the OSI reference model). Wireless communication of data including information (print data, scan data, etc.) can be performed. However, a device in the G / O state is not connected to an unregistered device that is not registered in the management list. Data for the unregistered device belonging to the WFD network (for example, data that does not include network layer information (Probe Wireless communication of the physical data (request signal, probe response signal, etc.) can be performed, but wireless communication of the above target data cannot be performed, for example, the MFP 10 in the G / O state is in the management list. The print data can be received wirelessly from the registered mobile terminal 50 (that is, the mobile terminal 50 in the client state), but the print data cannot be received wirelessly from a device that is not registered in the management list.

  In addition, a G / O state device can relay wireless communication of target data (print data, scan data, etc.) between a plurality of client state devices. For example, when the portable terminal 50 in the client state should wirelessly transmit print data to another printer in the client state, the portable terminal 50 first wirelessly transmits the print data to the MFP 10 in the G / O state. In this case, the MFP 10 wirelessly receives print data from the portable terminal 50 and transmits the print data wirelessly to the other printer. That is, a device in the G / O state can execute the function of the AP of the normal Wi-Fi network.

  Note that a WFD compatible device that does not belong to the WFD network (that is, a device that is not registered in the management list) is a device in a device state. The device in the device state can execute wireless communication of data (physical layer data such as a probe request signal and a probe response signal) for belonging to the WFD network, but the target data (print data, Wireless communication of scan data or the like is impossible.

  In the following, a device that is not capable of performing wireless communication in accordance with the WFD scheme but is capable of performing wireless communication in accordance with normal Wi-Fi is referred to as “a WFD non-compliant device”. A “non-WFD compatible device” can also be referred to as a “legacy device”. A device that does not support WFD cannot operate in the G / O state. A device in the G / O state can describe identification information of a device that does not support WFD in the management list.

(Configuration of MFP 10)
The MFP 10 includes an operation unit 12, a display unit 14, a print execution unit 16, a scan execution unit 18, and a wireless LAN interface (hereinafter, the interface is referred to as “I / F”) 2.
0, NFC I / F 22, and control unit 30. The operation unit 12 includes a plurality of keys. The user can input various instructions to the MFP 10 by operating the operation unit 12. The display unit 14 is a display for displaying various information. The print execution unit 16 is a printing mechanism such as an inkjet method or a laser method. The scan execution unit 18 is a scan mechanism such as a CCD or CIS.

  The wireless LAN I / F 20 is an interface for the control unit 30 to execute wireless communication according to the WFD method and wireless communication according to normal Wi-Fi. The wireless LAN I / F 20 is physically one interface. However, the wireless LAN I / F 20 includes a MAC address used in wireless communication in accordance with the WFD method (hereinafter referred to as “MAC address for WFD”) and a MAC address used in wireless communication in accordance with normal Wi-Fi. Both addresses (hereinafter referred to as “normal Wi-Fi MAC addresses”) are assigned. More specifically, a normal Wi-Fi MAC address is pre-assigned to the wireless LAN I / F 20. The control unit 30 generates a WFD MAC address using the normal Wi-Fi MAC address, and assigns the WFD MAC address to the wireless LAN I / F 20. The WFD MAC address is different from the normal Wi-Fi MAC address. Therefore, the control unit 30 can simultaneously execute both wireless communication in accordance with the WFD method and wireless communication in accordance with normal Wi-Fi via the wireless LAN I / F 20. As a result, a situation can be established in which the MFP 10 belongs to the WFD network and also belongs to the normal Wi-Fi network.

  The G / O state device can describe not only the identification information of the WFD-compatible device in the client state but also the identification information of the WFD-incompatible device in the management list. That is, a device in the G / O state can establish a WFD connection with a device that does not support WFD. Generally speaking, the WFD connection is a wireless connection in which the WFD MAC address of the MFP 10 is used. The WFD network is a wireless network in which the WFD MAC address of the MFP 10 is used. Similarly, the normal Wi-Fi connection is a wireless connection in which the normal Wi-Fi MAC address of the MFP 10 is used. The normal Wi-Fi network is a wireless network in which the normal Wi-Fi MAC address of the MFP 10 is used.

  The user operates the operation unit 12 to change the setting of the wireless LAN I / F 20, thereby enabling wireless communication in accordance with the WFD scheme using the wireless LAN I / F 20 (hereinafter referred to as “WFD = ON”). Mode) and a mode in which wireless communication according to the WFD method using the wireless LAN I / F 20 cannot be executed (hereinafter referred to as “WFD = OFF mode”). Can do. The mode setting unit 46 sets either the WFD = ON mode or the WFD = OFF mode according to the user's operation. Specifically, the mode setting unit 46 stores a mode value representing a mode set by the user in the memory 34.

  In the state where the WFDI / F = OFF mode, the control unit 30 executes each process according to the WFD method (for example, a process for setting the MFP 10 to a spontaneous G / O mode described later, G / O negotiation, etc.). Can not do it. In the state where WFDI / F = ON, the memory 34 stores a value indicating the current state of the MFP 10 relating to WFD (any one of the G / O state, the client state, and the device state).

  The NFC I / F 22 is an interface for the control unit 30 to perform wireless communication according to the NFC scheme. The NFC I / F 22 is configured by a chip physically different from the W-Fi I / F 20.

Note that the communication speed of wireless communication via the wireless LAN I / F 20 (for example, the maximum communication speed is 11 to 454 Mbps) is the communication speed of wireless communication via the NFC I / F 22 (for example, the maximum communication speed is 100 to 424 Kbps). ) Faster than. Furthermore, the frequency of the carrier wave (for example, 2.4 GHz band and 5.0 GHz band) in the wireless communication via the wireless LAN I / F 20 is the frequency of the carrier wave (for example, 13.56 MHz band) in the wireless communication via the NFC I / F 22. Is different. In addition, when the distance between the MFP 10 and the portable terminal 50 is approximately 10 cm or less, the control unit 30 can execute wireless communication with the portable terminal 50 according to the NFC scheme via the NFC I / F 22. On the other hand, regardless of whether the distance between the MFP 10 and the portable terminal 50 is 10 cm or less or 10 cm or more (for example, about 100 m at the maximum), the control unit 30 uses the WFD method via the wireless LAN I / F 20. Wireless communication in accordance with the mobile terminal 50 and wireless communication in accordance with normal Wi-Fi. That is, the maximum distance that the MFP 10 can execute wireless communication with a communication destination device (for example, the portable terminal 50) via the wireless LAN I / F 20 is the maximum distance that the MFP 10 can communicate with the communication destination device via the NFC I / F 22. It is larger than the maximum distance at which wireless communication can be performed.

  The control unit 30 includes a CPU 32 and a memory 34. The CPU 32 executes various processes according to the program stored in the memory 34. The functions of the units 40 to 46 are realized by the CPU 32 executing the process according to the program.

  The memory 34 includes a ROM, a RAM, a hard disk, and the like. The memory 34 stores the above program executed by the CPU 32. The memory 34 includes a work area 38. When the MFP 10 currently belongs to the WFD network, the work area 38 communicates information indicating that the MFP 10 currently belongs to the WFD network and target data (for example, print data) via the WFD network. Wireless settings (including authentication method, encryption method, password, wireless network SSID (Service Set Identifier), BSSID (Basic Service Set Identifier)). The work area 38 includes information indicating that the MFP 10 currently belongs to the normal Wi-Fi network when the MFP 10 currently belongs to the normal Wi-Fi network, and target data via the normal Wi-Fi network. The wireless setting for executing the communication is stored. The SFD of the WFD network is a network identifier for identifying the WFD network, and the SSID of the normal Wi-Fi network is a network identifier for identifying the normal Wi-Fi network. The BSSID of the WFD network is an identifier unique to the device in the G / O state (for example, the MAC address of the device in the G / O state), and the BSSID of the normal Wi-Fi network is an identifier unique to the AP (for example, unique to the AP). Identifier).

  The work area 38 further stores a value indicating the current state of the WFD (G / O state, client state, or device state) when the MFP 10 is operating in accordance with the WFD method. The work area 38 further stores a mode value representing the WFD = ON mode or a mode value representing the WFD = OFF mode.

  Note that the user can set the MFP 10 to the spontaneous G / O mode by operating the operation unit 12. The spontaneous G / O mode is a mode in which the MFP 10 maintains operation in the G / O state. The work area 38 in the memory 34 further stores a value indicating whether or not the MFP 10 is set to the spontaneous G / O mode. When a WFD compatible device in the device state establishes a WFD connection with another WFD compatible device in the device state, it normally selects whether to operate in the G / O state or the client state. G / O negotiation is performed to determine automatically. When the MFP 10 is set to the spontaneous G / O mode, the MFP 10 maintains the operation in the G / O state without executing the G / O negotiation.

(Configuration of mobile terminal 50)
The mobile terminal 50 is, for example, a mobile phone (for example, a smartphone), a PDA, a notebook PC,
A tablet PC, a portable music player, a portable video player, and the like. The portable terminal 50 includes two wireless interfaces, a wireless LAN I / F (that is, an interface for WFD and normal Wi-Fi) and an NFC I / F. Accordingly, the portable terminal 50 can execute wireless communication with the MFP 10 using the wireless LAN I / F, and can execute wireless communication with the MFP 10 using the NFC I / F. The portable terminal 50 includes an application program for causing the MFP 10 to execute a function (for example, a print function, a scan function, etc.). The application program may be installed on the portable terminal 50 from a server provided by the vendor of the MFP 10 or may be installed on the portable terminal 50 from a medium shipped with the MFP 10.

  Similar to the MFP 10, the portable terminal 50 includes a work area 58 in the memory 54. The work area 58 is a wireless setting (authentication method, encryption method, password, wireless) for performing communication through the network when the mobile terminal 50 currently belongs to the WFD network or the normal Wi-Fi network. Network SSID and BSSID). Further, when the mobile terminal 50 is operating in accordance with the WFD method, the work area 58 displays a state value indicating the state of the mobile terminal 50 (that is, any one of the G / O state, the client state, and the device state). Store.

(Configuration of PC8)
The PC 8 includes a wireless LAN I / F (that is, an interface for WFD and normal Wi-Fi), but does not include an NFC I / F. Accordingly, the PC 8 can execute communication with the MFP 10 using the wireless LAN I / F, but cannot execute wireless communication according to the NFC method. The PC 8 includes a driver program for causing the MFP 10 to execute processing (for example, printing processing, scanning processing, etc.). Note that the driver program is normally installed in the PC 8 from a medium shipped with the MFP 10. However, in a modification, the driver program may be installed on the PC 8 from a server provided by the vendor of the MFP 10.

(Configuration of AP6)
The AP 6 is not a device in the WFD G / O state, but is a normal access point called a wireless access point or a wireless LAN router. The AP 6 can establish normal Wi-Fi connection with a plurality of devices. Thereby, a normal Wi-Fi network including the AP 6 and a plurality of devices is constructed. The AP 6 receives data from one of a plurality of devices belonging to the normal Wi-Fi network, and transmits the data to another one of the plurality of devices. That is, the AP 6 relays communication between a pair of devices belonging to the normal Wi-Fi network.

  The difference between the WFD G / O state device and a normal AP is as follows. That is, when a device in the WFD G / O state leaves the WFD network to which the device currently belongs and newly belongs to another WFD network, the device is in a state other than the G / O state (that is, the client state). Can work. In contrast, a normal AP (that is, AP6) executes a function of relaying communication between a pair of devices regardless of which normal Wi-Fi network the AP belongs to, and cannot operate in a client state. .

(Communication process executed by MFP 10)
With reference to FIG. 2, a communication process executed by the MFP 10 will be described. The control unit 30 executes a communication process when the MFP 10 is turned on. In S2, the receiving unit 40 monitors reception of NFC information by executing wireless communication according to the NFC scheme. The receiving unit 40 receives NFC information via the NFC I / F 22. Specifically, the receiving unit 40 monitors whether an NFC communication session is established between the MFP 10 and the portable terminal 50. While the MFP 10 is turned on, the receiving unit 40 causes the NFC I / F 22 to transmit a radio wave for detecting a device that can perform wireless communication in accordance with the NFC scheme.

  The user of the portable terminal 50 starts an application program. The user operates the portable terminal 50 to cause the portable terminal 50 to generate NFC information including a process execution instruction (for example, a print instruction and a scan instruction) indicating a process to be executed by the MFP 10. The NFC information further includes the SSID and BSSID of the wireless network to which the mobile terminal 50 currently belongs when the mobile terminal 50 currently belongs to the wireless network. Note that the case where the mobile terminal 50 currently belongs to the wireless network means that at least one of the WFD connection and the normal Wi-Fi connection is connected between the mobile terminal 50 and another device (for example, AP6, MFP10). Is established.

  The user can bring the portable terminal 50 closer to the MFP 10. Thus, when the distance between portable terminal 50 and MFP 10 becomes smaller than the distance (for example, 10 cm) that radio waves reach each other, portable terminal 50 receives the radio waves from MFP 10 and transmits response radio waves to MFP 10. . As a result, the control unit 30 receives the response radio wave from the portable terminal 50 and establishes an NFC communication session. When the NFC communication session is established, the portable terminal 50 transmits the generated NFC information to the MFP 10.

  When the NFC information is received (YES in S2), in S4, the determination unit 42 determines whether the MFP 10 currently belongs to the network. Specifically, the determination unit 42 stores in the work area 38 at least one of information indicating that it currently belongs to the WFD network and information indicating that it currently belongs to the normal Wi-Fi network. If it is determined that the MFP 10 currently belongs to the wireless network (YES in S4), the process proceeds to S6. On the other hand, the determination unit 42 determines whether the information indicating that it currently belongs to the WFD network and the information indicating that it currently belongs to the normal Wi-Fi network are not stored in the work area 38. Is not currently belonging to the wireless network (NO in S4), the process proceeds to S8.

  In S <b> 6, the determination unit 42 confirms whether the portable terminal 50 currently belongs to the network to which the MFP 10 currently belongs. Specifically, the determination unit 42 first determines whether the NSID information includes the SSID and BSSID of the network to which the mobile terminal 50 currently belongs. If the SSID and BSSID are not included in the NFC information, the determination unit 42 determines that the portable terminal 50 does not currently belong to the network to which the MFP 10 currently belongs (NO in S6). According to this configuration, the MFP 10 can appropriately determine that the portable terminal 50 does not currently belong to the network to which the MFP 10 currently belongs. When the NSID information includes the SSID and BSSID of the network to which the portable terminal 50 currently belongs, the determination unit 42 determines whether the SSID and BSSID included in the wireless settings stored in the work area 38 Determines whether the SSID and BSSID included in the NFC information match.

If both the SSID and BSSID match, it is determined that the portable terminal 50 currently belongs to the network to which the MFP 10 currently belongs (YES in S6), and the process proceeds to S7. On the other hand, if at least one of the SSID and BSSID does not match, it is determined that the portable terminal 50 does not currently belong to the network to which the MFP 10 currently belongs (NO in S6), and the process proceeds to S8. According to this configuration, the MFP 10 can appropriately determine whether or not the mobile terminal 50 currently belongs to the network to which the MFP 10 currently belongs. In S6, the determination unit 42 determines whether or not the SSIDs match and determines whether or not the BSSIDs match. Accordingly, the determination unit 42 can determine whether the MFP 10 and the portable terminal 50 belong to the same wireless network constructed by the same AP. More specifically, one AP may construct a plurality of wireless networks by using a plurality of SSIDs. Therefore, if the BSSIDs match and the SSIDs do not match, the MFP 10 and the portable terminal 50 may belong to different wireless networks constructed by the same AP. In the present embodiment, it is possible to determine whether the MFP 10 and the portable terminal 50 belong to the same wireless network more reliably by determining whether both the SSID and the BSSID match. In the modified example, it is not necessary to determine whether the SSIDs match in S6 and whether the BSSIDs match. As a result, even when the MFP 10 and the portable terminal 50 belong to wireless networks constructed by different access points, if the SSID matches, it is determined that the MFP 10 and the portable terminal 50 belong to the same wireless network. obtain.

  When the mobile terminal 50 currently belongs to the network to which the MFP 10 currently belongs, the MFP 10 and the mobile terminal 50 can execute communication via the network to which the MFP 10 currently belongs. That is, the portable terminal 50 can perform wireless communication with the MFP 10 using the wireless settings currently stored in the work area 58. In S7, the control unit 30 transmits setting change unnecessary information indicating that data communication can be performed without changing the wireless setting of the mobile terminal 50 via the NFC I / F 22, and the process proceeds to S20. Note that the setting change unnecessary information includes the IP address of the MFP 10.

  In S8, the determination unit 42 determines whether or not the WFD = ON mode is set. If the mode value stored in the memory 34 is a value representing the WFD = ON mode, the determination unit 42 determines YES in S8 and proceeds to S10. On the other hand, when the mode value stored in the memory 34 is a value representing the WFD = OFF mode, the determination unit 42 determines NO in S8 and proceeds to S9.

  In S9, the communication execution unit 44 changes the mode value stored in the memory 34 to change the WFD = OFF mode to the WFD = ON mode, and proceeds to S15. The communication execution unit 44 further stores setting change information indicating that the mode value has been changed in the memory 34.

  In S10, the determination unit 42 determines whether the MFP 10 is operating as a client state in the wireless network to which the MFP 10 currently belongs. Specifically, the determination unit 42 determines that it is operating as a client state when the state value stored in the work area 38 is a value representing the client state (YES in S10). On the other hand, when the state value stored in the work area 38 is not a value representing the client state, the determining unit 42 determines that the client state is not operating (NO in S10). If YES in S10, the process proceeds to S14.

  On the other hand, in the case of NO in S10, in S12, the determination unit 42 determines whether the MFP 10 is operating in the G / O state in the wireless network to which it currently belongs. Specifically, the determination unit 42 determines that the G / O state is operating when the state value stored in the work area 38 is a value representing the G / O state (YES in S12). ). On the other hand, when the state value stored in the work area 38 is not a value representing the G / O state, the determination unit 42 does not operate as the G / O state (that is, the MFP 10 is in the device state). Judgment is made (NO in S12). If YES in S12, the process proceeds to S13. If NO in S12, the process proceeds to S15.

In S13, the determination unit 42 determines in advance the number of devices other than the MFP 10 included in the WFD network in which the MFP 10 is operating in the G / O state (that is, a device that has established a connection with the MFP 10). Determine whether the number is less than the maximum number of clients. The determination unit 42 determines YES in S13 when the number of pieces of device identification information stored in the management list is smaller than the maximum number of clients, and determines NO in S13 when equal. If YES in S13, the process proceeds to S16, and if NO in S13, the process proceeds to S14.

  In S14, the communication execution unit 44 transmits communication NG information indicating that the MFP 10 and the portable terminal 50 cannot currently perform communication to the portable terminal 50 using the NFC I / F 22, and the process proceeds to S2. Return.

  In S15, the communication execution unit 44 sets the MFP 10 to the spontaneous G / O mode. The spontaneous G / O mode is a mode in which the MFP 10 maintains operation in the G / O state. Accordingly, the WFD network is not constructed in the step S15, but the MFP 10 is set to the G / O state. When the MFP 10 is set to the G / O state, the communication execution unit 44 allows the WFD compatible device and / or the non-WFD compatible device to perform wireless communication with the MFP 10 operating in the G / O state via the WFD network. Prepare wireless settings (SSID, BSSID, authentication method, encryption method, password, etc.) for execution. According to this configuration, regardless of whether the device that receives the wireless setting from the MFP 10 (the portable terminal 50 in this embodiment) is a WFD-compatible device or a WFD-incompatible device, the MFP 10 receives the wireless setting. Wireless communication can be executed.

  Note that the authentication method and the encryption method are determined in advance. Moreover, the communication execution part 44 produces | generates a password. The SSID may be generated by the communication execution unit 44 when generating the password, or may be determined in advance. BSSID is the MAC address of the MFP 10. At this stage, the management list managed by the MFP 10 does not describe the identification information of the device connected to the device in the G / O state.

  In S <b> 16, the communication execution unit 44 transmits the prepared wireless setting to the portable terminal 50 using the NFC I / F 22. When the process of S16 is executed after the process of S15, the communication execution unit 44 transmits the wireless setting prepared in the stage (S15) set to the spontaneous G / O mode to the portable terminal 50. When the process of S16 is executed after the process of S13, the communication execution unit 44 sets the NFC I / F 22 for the wireless setting prepared when the WFD network in which the MFP 10 is operating in the G / O state is constructed. It is used and transmitted to the portable terminal 50.

  Next, in S <b> 18, the communication execution unit 44 establishes a WFD connection between the MFP 10 and the mobile terminal 50 using the wireless LAN I / F 20. When receiving the wireless setting of the MFP 10 operating in the G / O state from the MFP 10, the portable terminal 50 stores the received wireless setting in the work area 58. For this reason, the portable terminal 50 performs wireless communication according to normal Wi-Fi. Next, the communication execution unit 44 performs authentication communication, authentication response, association request, association response, and 4-way handshake wireless communication with the mobile terminal 50. Various authentication processes such as SSID authentication, authentication method and encryption method authentication, password authentication, and the like are executed in the process of the wireless communication. When all the authentications are successful, a wireless connection is established between the MFP 10 and the portable terminal 50.

In the process of S18, the communication execution unit 44 acquires the MAC address of the portable terminal 50 using the wireless LAN I / F 20. When the wireless connection is established, the control unit 30 further adds the MAC address of the portable terminal 50 to the management list. Note that the MAC address of the portable terminal 50 is included in the NFC information. As a result, the MFP 10 in the G / O state can
According to -Fi, communication of target data (print data, scan data, etc.) can be executed with the portable terminal 50. The target data includes data in the network layer, which is a higher layer than the physical layer of the OSI reference model. Accordingly, the MFP 10 in the G / O state can execute wireless communication in the network layer with the portable terminal 50 in the client state.

  Next, in S <b> 20, the communication execution unit 44 executes data communication processing with the portable terminal 50 via the wireless LAN I / F 20. The content of the data communication process varies depending on the content of the process execution instruction included in the NFC information. When the process execution instruction is a print instruction, the communication execution unit 44 receives print data from the portable terminal 50 in the data communication process. In this case, the control unit 30 causes the print execution unit 16 to execute print processing using the received print data.

  On the other hand, when the process execution instruction is a scan instruction, the control unit 30 causes the scan execution unit 18 to scan the document set in the scan execution unit 18 and generate scan data. Next, the communication execution unit 44 transmits the generated scan data to the mobile terminal 50.

  Next, in S <b> 21, the communication execution unit 44 monitors reception of a disconnection request for disconnecting the connection with the portable terminal 50 from the portable terminal 50 using the wireless LAN I / F 20. If the disconnection request is not received even after the predetermined period has elapsed (NO in S21), the process returns to S2. On the other hand, when the disconnection request is received from the portable terminal 50 within a predetermined period after the data communication process of S20 is completed (YES in S21), the communication execution unit 44 disconnects the wireless connection with the portable terminal 50. . Specifically, the communication execution unit 44 deletes the MAC address of the portable terminal 50 in the management list. Next, in S22, the communication execution unit 44 determines whether the setting of the wireless LAN I / F 20 has been changed by the process of S9. Specifically, when the setting change information is stored in the memory 34, the communication execution unit 44 determines in S9 that the mode value indicating the WFD = OFF mode has been changed to the mode value indicating the WFD = ON mode. (YES in S22), the process proceeds to S23. On the other hand, when the setting change information is not stored in the memory 34, the communication execution unit 44 is not changed from the mode value indicating the WFD = OFF mode to the mode value indicating the WFD = ON mode in S9 (in S22). NO) and return to S2.

  In S23, the communication execution unit 44 determines whether an external device (for example, PC8) other than the portable terminal 50 currently belongs to the WFD network newly constructed in S18. Specifically, when the management list includes identification information other than the identification information of the portable terminal 50, the communication execution unit 44 currently belongs to the WFD network (YES in S23). Judge. In this case, the mode value is not changed, and the process returns to S2. According to this configuration, it is possible to prevent the MFP 10 from being detached from the WFD network when an external device currently belongs to the WFD network.

  On the other hand, the communication execution unit 44 determines that the external device does not currently belong to the WFD network when the identification information other than the portable terminal 50 is not included in the management list (NO in S23). Proceed to S24. In S24, the communication execution unit 44 changes the mode value indicating the WFD = ON mode from the mode value indicating the WFD = OFF mode, and returns to S2. That is, in the communication process, when it is determined in S8 that the WFD = OFF mode, wireless communication using the wireless LAN I / F 20 is temporarily performed with the portable terminal 50 via the WFD network. , WFD = OFF mode is changed to WFD = ON mode. When the WFD = ON mode is changed to the WFD = OFF mode in S25, the WFD network constructed in S18 disappears. According to this configuration, when the mode value is changed from the mode value indicating the WFD = OFF mode to the mode value indicating the WFD = ON mode during communication processing, the mode value can be returned to the setting before the change. it can.

(Effect of this embodiment)
With reference to FIGS. 3-7, the effect of a present Example in the 1st-5th situation is demonstrated. Each of FIGS. 3 to 7 shows a process corresponding to the communication process of FIG.

(First situation)
In the first situation shown in FIG. 3, the MFP 10 and the portable terminal 50 currently belong to the same WFD network or the same normal Wi-Fi network. In this situation, when NFC information is received from the portable terminal 50 using the NFC I / F 22, in S6, the MFP 10 determines that the portable terminal 50 currently belongs to the network to which the MFP 10 currently belongs. (YES in S6). In S <b> 7, the MFP 10 transmits setting change unnecessary information to the portable terminal 50 using the NFC I / F 22. Upon receiving the setting change unnecessary information, the portable terminal 50 transmits print data to the MFP 10 using the IP address included in the setting change unnecessary information and the wireless setting stored in the work area 58. The MFP 10 receives the print data using the wireless LAN I / F 20 (S20). Upon receiving the print data, the MFP 10 causes the print execution unit 16 to execute print processing.

  In the sequence diagram of the present specification, the MFP 10 uses wireless communication using the NFC I / F 22 (that is, wireless communication according to the NFC method) and the MFP 10 uses wireless LAN I / F 20 (that is, the WFD method or normal Wi-Fi). -Wireless communication according to Fi) is represented by arrows. The arrow indicating the wireless communication using the wireless LAN I / F 20 is shown thicker than the arrow indicating the wireless communication using the NFC I / F 22.

  According to this configuration, when it is determined that the portable terminal 50 currently belongs to the network to which the MFP 10 currently belongs, the MFP 10 can change the wireless settings currently set for the MFP 10 and the portable terminal 50. In addition, the MFP 10 and the portable terminal 50 can appropriately execute print data communication via the network to which the MFP 10 currently belongs.

(Second situation)
In the second situation shown in FIG. 4, the MFP 10 currently belongs to the WFD network. The MFP 10 operates in the G / O state in the WFD network. The PC 8 in the client state currently belongs to the WFD network. The portable terminal 50 does not currently belong to the wireless network to which the MFP 10 currently belongs. The portable terminal 50 may or may not belong to a wireless network other than the wireless network to which the MFP 10 currently belongs.

In this situation, when NFC information is received from the mobile terminal 50 using the NFC I / F 22, in S6, the MFP 10 indicates that the mobile terminal 50 does not currently belong to the WFD network to which the MFP 10 currently belongs. Judgment is made (YES in S6). The NFC information includes the SSID and BSSID of the wireless network when the mobile terminal 50 currently belongs to the wireless network. However, if the mobile terminal 50 does not currently belong to the wireless network, the NFC information Does not include SSID and BSSID. In S12, the MFP 10 determines that the MFP 10 is in the G / O state (YES in S12). In this case, in S <b> 16, the MFP 10 transmits the wireless setting of the MFP 10 stored in the work area 38 and the IP address of the MFP 10 to the portable terminal 50 using the NFC I / F 22. When the portable terminal 50 receives the wireless setting, the portable terminal 50 stores the received wireless setting in the work area 58. Next, the MFP 10 and the portable terminal 50 establish a WFD connection (S18). Thereby, the portable terminal 50 can belong to the WFD network to which the MFP 10 currently belongs. Note that the MFP 10 transmits wireless settings including the authentication method and the encryption method of the MFP 10 to the portable terminal 50 using the NFC I / F 22. According to this configuration,
The portable terminal 50 can execute an authentication process according to the authentication method and the encryption method received from the MFP 10, and does not need to execute a process for confirming which authentication method and encryption method should be used. For this reason, the MFP 10 and the portable terminal 50 can establish a connection relatively early.

  Next, the portable terminal 50 transmits print data to the MFP 10 using the wireless setting stored in the work area 58 and the IP address received in S16. The MFP 10 receives the print data using the wireless LAN I / F 20 (S20). Upon receiving the print data, the MFP 10 causes the print execution unit 16 to execute print processing. According to this configuration, when the MFP 10 is operating in the G / O state in the WFD network, the MFP 10 communicates print data with the portable terminal 50 via the WFD network to which the MFP 10 currently belongs. Can be implemented properly.

(Third situation)
In the third situation shown in FIG. 5, the MFP 10 currently belongs to the WFD network. The MFP 10 operates as a client state in the WFD network. In the WFD network, the PC 8 in the G / O state currently belongs, but the portable terminal 50 does not currently belong. The portable terminal 50 is the same as in the second situation.

  In this situation, when NFC information is received from the mobile terminal 50 using the NFC I / F 22, in S6, the MFP 10 indicates that the mobile terminal 50 does not currently belong to the WFD network to which the MFP 10 currently belongs. Judgment is made (NO in S6). In S10, the MFP 10 determines that the MFP 10 is in the client state (YES in S10). In this case, in S <b> 14, the MFP 10 transmits communication NG information to the portable terminal 50 using the NFC I / F 22.

  In this case, the MFP 10 does not transmit the wireless setting stored in the work area 38 to the portable terminal 50. According to this configuration, it is not necessary to provide the mobile terminal 50 with the wireless settings of the PC 8 operating in the G / O state in the WFD network. Thereby, it can suppress that the portable terminal 50 enters a WFD network. In addition, the mobile terminal 50 can notify the user of the mobile terminal 50 that the MFP 10 does not perform communication of target data with the mobile terminal 50 by receiving the communication NG information from the MFP 10.

(Fourth situation)
In the fourth situation shown in FIG. 6, the MFP 10 is set to the WFD = ON mode, but does not currently belong to the WFD network. That is, the MFP 10 operates as a device state. Note that the MFP 10 is in one of a state currently belonging to the normal Wi-Fi network and a state not currently belonging. The portable terminal 50 is the same as in the second situation.

In this situation, when NFC information is received from the portable terminal 50 using the NFC I / F 22, in S4, the MFP 10 determines that the MFP 10 does not currently belong to the network (NO in S4: MFP 10 is normal) In step S6, the MFP 10 determines that the portable terminal 50 does not currently belong to the normal Wi-Fi network to which the MFP 10 currently belongs (S6). YES: When the MFP 10 is currently in the normal Wi-Fi network). In S10 and S12, the MFP 10 determines that the MFP 10 is neither in the G / O state nor in the client state (both NO in S10 and S12). In this case, in S15, the MFP 10 does not execute the G / O negotiation, and moves the MFP 10 to the spontaneous G / O.
Set to mode.

  Next, in S <b> 16, the MFP 10 stores the wireless setting of the MFP 10 stored in the work area 38 (that is, the wireless setting prepared when the spontaneous G / O mode is set in S <b> 15), and the IP address of the MFP 10. Are transmitted to the portable terminal 50 using the NFC I / F 22. When the portable terminal 50 receives the wireless setting, the portable terminal 50 stores the received wireless setting in the work area 58. Next, the MFP 10 and the portable terminal 50 establish a WFD connection (S18). Thereby, the portable terminal 50 can belong to the WFD network in which the MFP 10 is operating in the G / O state.

  Next, the portable terminal 50 transmits print data to the MFP 10 using the wireless setting stored in the work area 58 and the IP address received in S16. The MFP 10 receives the print data using the wireless LAN I / F 20 (S20). Upon receiving the print data, the MFP 10 causes the print execution unit 16 to execute print processing. According to this configuration, the MFP 10 can newly construct a WFD network in which the MFP 10 operates in the G / O state in the WFD network. Thereby, the MFP 10 can appropriately execute the communication of the print data with the portable terminal 50 via the newly constructed WFD network. Further, since the MFP 10 inevitably operates in the G / O state in the newly constructed WFD network, it is possible to determine an authentication method or the like used in the WFD network.

(5th situation)
In the fifth situation shown in FIG. 7, the MFP 10 is set to the WFD = OFF mode. Note that the MFP 10 is in one of a state currently belonging to the normal Wi-Fi network and a state not currently belonging. The portable terminal 50 is the same as in the second situation.

  In this situation, when NFC information is received from the portable terminal 50 using the NFC I / F 22, it is determined as NO in S4 or S6 as in the fourth situation. In S8, the MFP 10 determines that the WFD = OFF mode is set. In this case, in S9, the MFP 10 changes from the WFD = OFF mode to the WFD = ON mode. Next, in S15, the MFP 10 sets the MFP 10 to the spontaneous G / O mode.

  Hereinafter, the printing process is the same as in the fourth situation. In this configuration, the same effect as in the fourth situation can be achieved. When the printing process ends, the MFP 10 determines that the external device does not currently belong to the newly constructed WFD network (NO in S23), and changes the WFD = ON mode to the WFD = OFF mode. According to this configuration, after the print data is communicated, the WFD = ON mode can be appropriately changed to the WFD = OFF mode when no external device belongs to the WFD network.

  In the present embodiment, the MFP 10 executes processing according to whether or not the MFP 10 currently belongs to the same network as the portable terminal 50, that is, whether or not the MFP 10 can communicate with the portable terminal 50. Thus, wireless communication between the portable terminal 50 and the target data can be appropriately executed at a relatively high communication speed using the wireless LAN I / F 20. Further, the MFP 10 can execute communication of target data via the WFD network without using the mobile terminal 50 and an access point different from the MFP 10 and the mobile terminal 50.

Further, when the MFP 10 is not communicable with the portable terminal 50 and the MFP 10 currently belongs to the WFD network, the MFP 10 and the portable terminal 50 can communicate with the portable terminal 50 via the WFD network to which the MFP 10 currently belongs. Communication can be performed appropriately. If the MFP 10 does not currently belong to the WFD network, the MFP 10
Communication of the target data with the portable terminal 50 can be appropriately executed via the newly constructed WFD network.

(Correspondence)
The MFP 10 is an example of a “communication device”, the NFC I / F 22 is an example of a “first type interface”, and the wireless LAN I / F 20 is an example of a “second type interface”. Note that, from the above description, the NFC I / F 22 (that is, the “first type interface”) performs the communication using the wireless LAN I / F 20 (that is, the “second type interface”). It can be said that the interface is used for communication performed between the communication device “) and the portable terminal 50.

  AP6 is an example of an “access point”. That is, the “access point” is a device that relays communication between a pair of devices belonging to the normal Wi-Fi network in the network to which the access point belongs, that is, the normal Wi-Fi network.

  The NFC information is an example of “specific information”, and the SSID and BSSID included in the NFC information are “wireless network identifiers included in the specific information”. A state in which the portable terminal 50 currently belongs to the network to which the MFP 10 currently belongs is a “communication enabled state”. The processing of S15 to S18 is an example of “specific processing”. Wireless communication via the WFD network using the wireless LAN I / F 20 is an example of “specific wireless communication”. The G / O state is an example of a “master station state”, and the client state is an example of a “slave station state”. When YES is determined in S4, the WFD network to which the MFP 10 belongs is an example of the “first wireless network”, and the WFD network constructed by the processing from S15 to S18 is the “second wireless network”. It is an example. The communication NG information is an example of “information indicating that communication of target data is not executed”. The WFD = ON mode is an example of a “first mode”, and the WFD = OFF mode is an example of a “second mode”.

(Second embodiment)
Differences from the first embodiment will be described. In this embodiment, the communication process of FIG. 8 is executed instead of the communication process of FIG. S2 to S24 in FIG. 8 are the same as the processes in S2 to S24 in FIG. If YES in S10, that is, if the MFP 10 currently belongs to the WFD network and is operating as a client state in the WFD network, in S42, the determination unit 42 determines the WFD network to which the MFP 10 currently belongs. It is determined whether or not it is possible to leave. Specifically, the determination unit 42 determines whether the WFD network to which it currently belongs when the data communication via the WFD network is currently being executed or the data communication is to be executed. It is determined that it is impossible to leave (NO in S42). On the other hand, the determination unit 42 can leave the WFD network to which it currently belongs when neither the situation in which data communication via the WFD network is being executed nor the situation in which data communication is to be executed. Is determined (YES in S42).

  For example, it is assumed that the PC 8 is operating in the G / O state in the WFD network to which the MFP 10 currently belongs. When the MFP 10 is currently receiving print data from the PC 8 using the wireless LAN I / F 20, the determination unit 42 determines that the data communication is currently being executed. Further, when the MFP 10 is generating scan data in accordance with a scan instruction from the PC 8, the MFP 10 should transmit to the PC 8 using the wireless LAN I / F 20 when the scan data is generated. It is determined that data communication should be executed.

If NO in S42, the process proceeds to S14, and if YES in S42, the process proceeds to S44. In S44, the communication execution unit 44 sends an MFP from the WFD network to which the MFP 10 is currently participating.
Release 10 Specifically, the communication execution unit 44 deletes the wireless setting stored in the work area 38 and changes the state value in the work area 38 to a value representing the device state. Subsequently, the communication execution unit 44 executes the process of S15.

(Effect of this embodiment)
The MFP 10 of the second embodiment can achieve the same effects as the MFP 10 of the first embodiment in the first, second, fourth, and fifth situations. The effects of this embodiment in the sixth and seventh situations will be described with reference to FIGS. Each of FIGS. 9 and 10 shows a process corresponding to the communication process of FIG.

(Sixth situation)
In the sixth situation shown in FIG. 9, the MFP 10 currently belongs to the WFD network. The MFP 10 operates as a client state in the WFD network. In the WFD network, the PC 8 in the G / O state currently belongs, but the portable terminal 50 does not currently belong. The portable terminal 50 is the same as in the second situation. Further, the MFP 10 is receiving print data from the PC 8.

  In this situation, when NFC information is received from the portable terminal 50 using the NFC I / F 22, as in the third situation, NO is determined in S6 and YES is determined in S10. Since the MFP 10 is receiving print data from the PC 8, the MFP 10 determines that it cannot leave the WFD network (NO in S42). In this case, in S <b> 14, the MFP 10 transmits communication NG information to the portable terminal 50 via the NFC I / F 22.

  According to this configuration, when the MFP 10 is performing data communication via the currently belonging WFD network, or when the MFP 10 is to perform data communication via the currently belonging WFD network, the MFP 10 Can be prevented from leaving the WFD network to which it currently belongs.

(Seventh situation)
In the seventh situation shown in FIG. 10, the MFP 10 currently belongs to the WFD network. The MFP 10 operates as a client state in the WFD network. In the WFD network, the PC 8 in the G / O state currently belongs, but the portable terminal 50 does not currently belong. However, the MFP 10 is not currently performing data communication with the PC 8, and is not in a situation where data communication with the PC 8 should be performed. The portable terminal 50 is the same as in the second situation.

  In this situation, when NFC information is received from the portable terminal 50 using the NFC I / F 22, as in the sixth situation, NO is determined in S6 and YES is determined in S10. Since the MFP 10 is neither in a situation where data communication via the WFD network is being executed nor in a situation where data communication should be executed, the MFP 10 can leave the WFD network to which the MFP 10 currently belongs. Judgment is made (YES in S42). In this case, in S15, the MFP 10 sets the MFP 10 to the spontaneous G / O mode. The following processing is the same as the processing after the MFP 10 is set to the spontaneous G / O mode in the fourth situation.

  According to this configuration, the MFP 10 can leave the WFD network in which the MFP 10 is operating in the client state, and can newly construct a WFD network. Thereby, the MFP 10 can appropriately execute communication of the target data with the portable terminal 50 via the newly constructed WFD network.

(Correspondence)
The processes in S42 and S44 in FIG. 8 and the processes in S15 to S18 are examples of the “specific process”.

(Third embodiment)
Differences from the first embodiment will be described. In the present embodiment, the communication process of FIG. 11 is executed instead of the communication process of FIG. In the present embodiment, the mobile terminal 50 includes WFD compatible information indicating whether or not the mobile terminal 50 can execute wireless communication according to the WFD method, and the device ID (for example, MAC address, NFC information further including a manufacturing number and the like is transmitted to the MFP 10.

  11 are the same as the processes of S4 to S24 in FIG. When the process of S9 is executed and when NO is determined in S12, that is, when the MFP 10 is operating in the device state, in S52, the determination unit 42 uses the NFC information to 50 determines whether or not wireless communication according to the WFD system can be executed. When the NFC information includes WFD compatible information indicating that the mobile terminal 50 can execute wireless communication according to the WFD method, the determination unit 42 performs wireless communication according to the WFD method. Is determined to be executable (YES in S52), and the process proceeds to S54.

  On the other hand, when the NFC information does not include WFD compatible information indicating that the mobile terminal 50 can execute wireless communication in accordance with the WFD method, the determination unit 42 conforms to the WFD method. It is determined that wireless communication cannot be executed (NO in S52), and the process proceeds to S15.

In S54, the communication execution unit 44 transmits WFD connection start information indicating the start of WFD connection to the portable terminal 50 via the NFC I / F 22. As a method for executing WFD wireless connection, a wireless connection method of WPS (abbreviation of Wi-Fi Protected Setup) is used. WPS wireless connection methods are PBC (Push Button Configuration) and P
IN (abbreviation of Personal Identification Number) code system. In the present embodiment, the PBC code system will be described, but the technique of the present embodiment can also be applied to the PIN code system. The WFD connection start information includes information indicating that the PBC code method is used as a method for executing a WFD wireless connection. The WFD connection start information further includes a device ID (for example, a MAC address, a serial number, etc.) of the MFP 10. Thereby, the portable terminal 50 that receives the WFD connection start information recognizes that the device identified by the device ID included in the WFD connection start information (that is, the MFP 10) should execute the processes of S58 and S62 described later. be able to.

  When the mobile terminal 50 receives the WFD connection start information, the mobile terminal 50 determines whether or not the mobile terminal 50 is set to perform wireless communication according to the WFD scheme. The portable terminal 50 maintains the setting of the wireless LAN I / F when the wireless communication according to the WFD method is executable, and follows the WFD method when the wireless terminal does not perform the wireless communication according to the WFD method. Change the setting to enable wireless communication.

  Next, in S55, the communication execution unit 44 searches for the portable terminal 50. Specifically, the communication execution unit 44 sequentially executes a scan process, a listen process, and a search process. The scan process is a process for searching for devices in the G / O state existing around the MFP 10. Specifically, in the scan process, the communication execution unit 44 sequentially transmits a probe request signal wirelessly using 13 channels of 1ch to 13ch sequentially. Note that this Probe Request signal includes P2P (Peer 2 Peer) information indicating that the MFP 10 can execute the WFD function.

For example, when there is a WFD compatible device in the G / O state around the MFP 10 (hereinafter referred to as “specific G / O device”), the specific G / O device is one of 1ch to 13ch. The use of the number of channels is determined in advance. Accordingly, the specific G / O device receives the Probe Request signal from the MFP 10 wirelessly. In this case, the specific G / O device transmits a Probe Response signal to the MFP 10 wirelessly. This Probe
The Response signal includes P2P information indicating that the specific G / O device can execute the WFD function, and information indicating that the specific G / O device is in the G / O state. As a result, the communication execution unit 44 can find a specific G / O device. The Probe Response signal further includes a device name of a specific G / O device, information indicating the model of the specific G / O device (for example, a mobile terminal, a PC, etc.), and a specific G / O device. MAC address. As a result, the communication execution unit 44 can acquire information regarding a specific G / O device.

  When the device ID of the specific G / O device included in the Probe Response signal matches the device ID of the mobile terminal 50 included in the NFC information, the communication execution unit 44 determines that the specific G / O device is mobile The terminal 50 can be specified. That is, when the mobile terminal 50 currently belongs to the WFD network and is operating in the G / O state in the WFD network, the communication execution unit 44 may discover the mobile terminal 50 through the Scan process. it can.

  For example, when there is a WFD compatible device in a device state (hereinafter referred to as “specific device device”) around the MFP 10, the specific device device is one of 1ch, 6ch, and 11ch. The use of the channel is predetermined. Therefore, the specific device device also receives the Probe Request signal from the MFP 10 wirelessly. In this case, the specific device device wirelessly transmits a Probe Response signal to the MFP 10. However, this Probe Response signal includes information indicating that the device is in the device state, and does not include information indicating that the device is in the G / O state. In addition, even when the device in the client state receives the Probe Request signal from the MFP 10 wirelessly, the device does not transmit the Probe Response signal to the MFP 10 wirelessly. Accordingly, the communication execution unit 44 can find the mobile terminal 50 in the scan process regardless of whether the mobile terminal 50 is in the G / O state or the device state.

  The Listen process is a process for responding to the Probe Request signal. The specific device device can wirelessly transmit a Probe Request signal in Search processing described later. That is, when the current state of the mobile terminal 50 is the device state, the mobile terminal 50 periodically transmits a Probe Request signal wirelessly. This Probe Request signal includes the device ID (for example, MAC address, serial number, etc.) of the portable terminal 50.

  When the device ID of the specific device device included in the Probe Request signal matches the device ID of the mobile terminal 50 included in the NFC information, the communication execution unit 44 is the mobile terminal 50. Can be specified. That is, when the mobile terminal 50 is operating in the device state, the communication execution unit 44 can find the mobile terminal 50 through the Listen process. When the communication execution unit 44 receives the Probe Request signal from the portable terminal 50, the communication execution unit 44 wirelessly transmits the Probe Response signal.

In the Search process, the communication execution unit 44 sequentially transmits a probe request signal wirelessly using three channels of 1ch, 6ch, and 11ch sequentially. As a result, the communication execution unit 44 wirelessly receives a Probe Response signal from a specific device device. The Probe Response signal includes P2P information indicating that a specific device device can execute the WFD function, information indicating that the specific device device is in a device state, and a device ID (for example, MAC) of the specific device device. Address, serial number, etc.). When the current state of the portable terminal 50 is the device state, the portable terminal 50 wirelessly transmits a Probe Response signal as a response to the Probe Request signal transmitted from the MFP 10.

  When the device ID of the specific device included in the Probe Response signal matches the device ID of the mobile terminal 50 included in the NFC information, the communication execution unit 44 is the mobile terminal 50. Can be specified. That is, when the mobile terminal 50 currently belongs to the WFD network and operates as a device state in the WFD network, the communication execution unit 44 can find the mobile terminal 50 by the Search process.

  In S55 described above, when the mobile terminal 50 is operating in the G / O state and in the device state, the communication execution unit 44 can find the mobile terminal 50 (in S56). YES). In S56, when the portable terminal 50 is not found (NO in S56), the process proceeds to S14.

  When the portable terminal 50 is found (YES in S56), in S57, the communication execution unit 44 determines whether the discovered portable terminal 50 is in a device state. Specifically, in the process of S55, when information indicating the device state is received, the mobile terminal 50 determines that it is in the device state (YES in S57), and proceeds to S58. On the other hand, when the information indicating that the device state is not received in the process of S55, the mobile terminal 50 determines that it is not in the device state (that is, the mobile terminal 50 is in the G / O state) (NO in S57). The process proceeds to S62.

  In S58, the communication execution unit 44 uses the wireless LAN I / F 20 to execute G / O negotiation with the portable terminal 50, and puts either the MFP 10 or the portable terminal 50 in the G / O state. And the other device is determined to operate as a client state.

  Specifically, the communication execution unit 44 first transmits a connection request signal to the portable terminal 50 wirelessly. As a result, the portable terminal 50 also transmits an OK signal to the MFP 10 wirelessly. Next, the communication execution unit 44 wirelessly transmits information indicating the G / O priority of the MFP 10 to the portable terminal 50 and receives information indicating the G / O priority of the portable terminal 50 from the portable terminal 50. The G / O priority of the MFP 10 is an index indicating the degree to which the MFP 10 should become G / O, and is determined in advance in the MFP 10. Similarly, the G / O priority of the mobile terminal 50 is an index indicating the degree to which the mobile terminal 50 should become G / O. For example, a device having relatively high CPU and memory capabilities (for example, the MFP 10) can perform other processes at high speed while operating as a G / O. Therefore, the G / O priority is normally set to such a device so that the degree to be G / O is high. On the other hand, for example, a device having relatively low CPU and memory capabilities (for example, the portable terminal 50) may not be able to execute other processes at high speed while operating as a G / O. Therefore, the G / O priority is normally set to such a device so that the degree to be G / O is low.

The communication execution unit 44 compares the G / O priority of the MFP 10 with the G / O priority of the portable terminal 50 and operates the device (MFP 10 or the portable terminal 50) with the higher priority as the G / O state. It is determined that the device (MFP 10 or portable terminal 50) with the lower priority should be operated in the client state. When the communication execution unit 44 determines that the MFP 10 should operate in the G / O state, the communication execution unit 44 changes the state value in the memory 34 from a value corresponding to the device state to a value corresponding to the G / O state. . As a result, the MFP 10 operates in the G / O state. When the MFP 10 determines that the MFP 10 should operate in the client state, the communication execution unit 44 changes the state value in the memory 34 from a value corresponding to the device state to a value corresponding to the client state. As a result, the MFP 10 operates as a client state. The portable terminal 50 determines the G / O state and the client state based on the G / O priority of the MFP 10 and the G / O priority of the target device, using the same method as the MFP 10. When the G / O negotiation in S58 ends, the process proceeds to S62.

  In S62, the communication execution unit 44 establishes a connection between the MFP 10 and the portable terminal 50 according to WPS. Specifically, the communication execution unit 44 determines whether or not the current state of the MFP 10 is a G / O state and the current state of the portable terminal 50 is a client state. When the current state of the MFP 10 is the G / O state and the current state of the portable terminal 50 is the client state, the communication execution unit 44 executes WPS negotiation for the G / O state.

Specifically, the communication execution unit 44 generates wireless settings (SSID, authentication method, encryption method, password, etc.) necessary for establishing a wireless connection, and transmits the wireless settings to the mobile terminal 50 wirelessly. Note that the authentication method and the encryption method are determined in advance. In addition, the communication execution unit 44 generates a password when generating the wireless setting. The SSID may be generated by the communication execution unit 44 or may be determined in advance. By transmitting the wireless setting to the portable terminal 50, the MFP 10 and the portable terminal 50 can use the same wireless setting. That is, the MFP 10 and the portable terminal 50 use the wireless setting to authenticate, authenticate, association request, association response, and 4 way.
Execute handshake wireless communication. In this process, the MFP 10 and the portable terminal 50 execute various authentication processes such as SSID authentication, authentication method and encryption method authentication, password authentication, and the like. When all the authentications are successful, a wireless connection is established between the MFP 10 and the portable terminal 50. Thereby, the MFP 10 and the portable terminal 50 are in a state belonging to the same WFD network.

  On the other hand, when the current state of the MFP 10 is the client state and the current state of the target device is the G / O state, the communication execution unit 44 executes WPS negotiation for the client state. Specifically, the portable terminal 50 generates wireless settings (SSID, authentication method, encryption method, password, etc.) necessary for establishing a wireless connection, and transmits them to the MFP 10 wirelessly. As a result, the communication execution unit 44 wirelessly receives the wireless setting from the portable terminal 50. Subsequent processing (communication processing such as Authentication Request) is the same as the WPS negotiation for the G / O state. Thereby, the MFP 10 and the portable terminal 50 are in a state belonging to the same WFD network. As a result, the MFP 10 in the client state can execute wireless communication of target data (print data and the like) with the portable terminal 50 in the G / O state. When S62 ends, the control unit 30 executes the processes of S20 to S24 in FIG. 2 and ends the communication process.

(Effect of this embodiment)
The MFP 10 of the third embodiment can achieve the same effects as the MFP 10 of the first embodiment in the first to third situations. The effects of the present embodiment in the eighth and ninth situations will be described with reference to FIGS. Each of FIGS. 12 and 13 shows processing corresponding to the communication processing of FIG.

(8th situation)
In the eighth situation shown in FIG. 12, the MFP 10 is set to the WFD = ON mode, but does not currently belong to the WFD network. That is, the MFP 10 operates as a device state. Note that the MFP 10 is in one of a state currently belonging to the normal Wi-Fi network and a state not currently belonging. The portable terminal 50 does not currently belong to the wireless network.

  In this situation, when the NFC information is received from the portable terminal 50 using the NFC I / F 22, the MFP 10 determines NO in S4 or S6 and NO in S10 and S12, as in the fourth situation. Judge.

  The MFP 10 transmits the WFD connection start information to the mobile terminal 50 using the wireless LAN I / F 20 (S54). Next, the MFP 10 searches the portable terminal 50 by performing the search process of S55. When the MFP 10 finds the portable terminal 50 (YES in 56), the MFP 10 determines whether the discovered portable terminal 50 is in a device state (S57). If it is determined that the device is in the device state (YES in S57), G / O negotiation (S58) and WPS negotiation (S62) are executed using the wireless LAN I / F 20. Thereby, a WFD network to which the MFP 10 and the portable terminal 50 belong is constructed.

  Next, the portable terminal 50 transmits the print data to the MFP 10. The MFP 10 receives the print data using the wireless LAN I / F 20 (S20). Upon receiving the print data, the MFP 10 causes the print execution unit 16 to execute print processing.

(9th situation)
In the ninth situation of FIG. 13, the MFP 10 is set to the WFD = OFF mode. Note that the MFP 10 is in one of a state currently belonging to the normal Wi-Fi network and a state not currently belonging. The portable terminal 50 does not currently belong to the wireless network.

  In this situation, when the NFC information is received from the portable terminal 50 using the NFC I / F 22, the MFP 10 determines NO in S4 or S6 and determines NO in S8, as in the fifth situation. To do. In this case, in S9, the MFP 10 changes from the WFD = OFF mode to the WFD = ON mode.

  The processing executed after the change from WFD = OFF mode to WFD = ON mode and before the printing processing is the processing until the printing processing is executed after it is determined NO in S10 and S12 in the eighth situation. It is the same. When the printing process ends, the MFP 10 determines that the external device does not currently belong to the newly constructed WFD network (NO in S23), and changes the WFD = ON mode to the WFD = OFF mode. According to this configuration, after the print data is communicated, the WFD = ON mode can be appropriately changed to the WFD = OFF mode when no external device belongs to the WFD network.

  According to this configuration, the WFD network in which the MFP 10 operates in either the G / O state or the client state can be constructed with the portable terminal 50. Accordingly, the MFP 10 can appropriately execute print data communication with the portable terminal 50.

(Correspondence)
The processes in S15 to S18 and the processes in S52 to S62 in FIG. 11 are examples of the “specific process”.

(Fourth embodiment)
Differences from the first embodiment will be described. In the present embodiment, the communication process of FIG. 14 is executed instead of the communication process of FIG. S2 to S24 in FIG. 14 are the same as the processes in S2 to S24 in FIG. If NO in S8, that is, if the MFP 10 is not set to the WFD = ON mode, in S76, the determination unit 42 determines whether or not the MFP 10 currently belongs to the normal Wi-Fi network. When the information indicating that it currently belongs to the normal Wi-Fi network is stored in the work area 38, the determination unit 42 determines that the MFP 10 currently belongs to the normal Wi-Fi network (YES in S76). The process proceeds to S80. On the other hand, when the information indicating that it belongs to the normal Wi-Fi network is not stored in the work area 38, the determination unit 42 determines that the MFP 10 does not currently belong to the normal Wi-Fi network (NO in S76). Determination is made and the process proceeds to S9.

  If YES in S10, that is, if the MFP 10 currently belongs to the WFD network and is operating as a client state in the WFD network, the communication execution unit 44 is stored in the work area 38 in S72. Among the G / O wireless settings, the wireless settings other than the password are transmitted to the portable terminal 50 via the NFC I / F 22, and the process proceeds to S20.

When the G / O wireless setting is received, the portable terminal 50 causes the user to specify a password. When the password is designated by the user, the portable terminal 50 establishes a connection with the device in the G / O state using the wireless setting received from the MFP 10 and the password designated by the user. As a result, the mobile terminal 50 receives the M / M via the device in the G / O state.
Wireless communication with the FP 10 is possible. Note that if the connection between the portable terminal 50 and the device in the G / O state is not established, the MFP 10 cannot execute wireless communication with the portable terminal 50. In this case, the control unit 30 returns to S2 without executing the processes of S20 to S24.

  If YES in S12, that is, if the MFP 10 currently belongs to the WFD network and is operating in the G / O state in the WFD network, the process proceeds to S13. In S16, the communication execution unit 44 transmits the wireless setting of the MFP 10 stored in the work area 38 to the portable terminal 50 via the NFC I / F 22, and proceeds to S18. The wireless setting of the MFP 10 transmitted in S16 includes a password.

  If NO is determined in S12, that is, if the MFP 10 is operating in the device state, the determining unit 42 executes the process of S78. The process of S78 is the same as the process of S76. If NO in S78, the process proceeds to S15, and if YES in S78, the process proceeds to S80.

  In S80, the communication execution unit 44 performs the wireless setting other than the password among the wireless settings for belonging to the normal Wi-Fi network stored in the work area 38, that is, the wireless settings of the AP (for example, AP6), as NFCI. The data is transmitted to the portable terminal 50 via / F22, and the process proceeds to S20. When the wireless setting of the AP is received, the portable terminal 50 establishes a connection with the AP using the wireless setting received from the MFP 10 and the password specified by the user, as in S72. Thereby, the portable terminal 50 can wirelessly communicate with the MFP 10 via the AP. Note that when the connection between the portable terminal 50 and the AP is not established, the MFP 10 cannot execute wireless communication with the portable terminal 50. In this case, the control unit 30 returns to S2 without executing the processes of S20 to S24.

(Effect of this embodiment)
The MFP 10 of the fourth embodiment can achieve the same effects as the MFP 10 of the first embodiment in the first, second, fourth, and fifth situations. The effects of this embodiment in the tenth and eleventh situations will be described with reference to FIGS. Each of FIGS. 15 and 16 shows a process corresponding to the communication process of FIG.

(10th situation)
In the tenth situation shown in FIG. 15, the MFP 10 currently belongs to the WFD network. The MFP 10 operates as a client state in the WFD network. In the WFD network, the PC 8 in the G / O state currently belongs, but the portable terminal 50 does not currently belong. The portable terminal 50 is the same as in the second situation.

  In this situation, when the NFC information is received from the portable terminal 50 using the NFC I / F 22, the MFP 10 determines NO in S6 and YES in S10, as in the third situation. In S <b> 72, the MFP 10 transmits the wireless setting that does not include the password among the wireless settings of the PC 8 operating in the G / O state and the IP address of the MFP 10 to the portable terminal 50 using the NFC I / F 22. To do. According to this configuration, it is not necessary to provide a password to the portable terminal 50 and the user. As a result, when the portable terminal 50 and the user do not know the password for belonging to the WFD network in which the PC 8 is operating in the G / O state, the portable terminal 50 is prevented from entering the WFD network. Can do.

  When the portable terminal 50 receives the wireless setting, the portable terminal 50 stores the received wireless setting in the work area 58. Next, the mobile terminal 50 displays a password designation screen on the display unit of the mobile terminal 50. The user can specify a password by operating the operation unit of the mobile terminal 50. The portable terminal 50 establishes a WFD connection with the PC 8 when a password is designated by the user. Thereby, the portable terminal 50 can belong to the WFD network to which the MFP 10 currently belongs. The portable terminal 50 operates as a client state in the WFD network.

  In the modification, the mobile terminal 50 may store the wireless settings used in the past for belonging to the network in the memory of the mobile terminal 50. In this case, when receiving the wireless setting that does not include the password, the portable terminal 50 may specify the wireless setting that includes the same SSID as the SSID included in the received wireless setting from the memory of the portable terminal 50. Then, the mobile terminal 50 may establish a WFD connection with the PC 8 using the wireless setting specified from the memory of the mobile terminal 50.

  When the portable terminal 50 belongs to the WFD network, print data is transmitted by executing wireless communication via the PC 8 using the wireless setting stored in the work area 58 and the IP address of the MFP 10 received in S72. Is transmitted to the MFP 10. When the MFP 10 receives print data from the PC 8 using the wireless LAN I / F 20 (S20), the MFP 10 causes the print execution unit 16 to execute print processing when the print data is received.

  According to this configuration, when the MFP 10 does not belong to the same network as the portable terminal 50, the MFP 10 appropriately executes print data communication with the portable terminal 50 via the WFD network to which the MFP 10 currently belongs. Can do.

(Eleventh situation)
In the eleventh situation shown in FIG. 16, the MFP 10 currently belongs to the normal Wi-Fi network. The MFP 10 is connected to the AP 6 in a normal Wi-Fi network. The portable terminal 50 is the same as in the second situation.

In this situation, when NFC information is received from the mobile terminal 50 using the NFC I / F 22, in S6, the MFP 10 belongs to the normal Wi-Fi network to which the MFP 10 currently belongs. It is determined that it is not present (NO in S6). In S8, the MFP 10 determines that the WFD = OFF mode is set (NO in S8). Subsequently, in S76, the MFP 10 determines that it currently belongs to the normal Wi-Fi network (YES in S76). In this case, in S <b> 80, the MFP 10 transmits to the portable terminal 50 the wireless setting that does not include the password among the wireless settings of the AP 6 stored in the work area 38 and the IP address of the MFP 10. According to this configuration, it is not necessary to provide a password to the portable terminal 50 and the user. As a result, when the mobile terminal 50 and the user do not know the password for belonging to the normal Wi-Fi network where the AP 6 is used, the mobile terminal 50 can be prevented from belonging to the normal Wi-Fi network. it can.

  When receiving the wireless setting, the portable terminal 50 receives the wireless setting and causes the user to specify a password, as in the tenth situation. Next, when a password is designated by the user, the portable terminal 50 establishes a normal Wi-Fi connection with the AP 6. Thereby, the portable terminal 50 can belong to the normal Wi-Fi network to which the MFP 10 currently belongs. The portable terminal 50 can transmit print data with the MFP 10 via the AP 6. When the portable terminal 50 belongs to the normal Wi-Fi network, the portable terminal 50 performs wireless communication via the AP 6 by using the wireless setting stored in the work area 58 and the IP address of the MFP 10 received in S80. The print data is transmitted to the MFP 10.

  Although not shown, even when the MFP 10 is currently operating as a device state (Yes in S8, NO in S10 and S12) and the MFP 10 belongs to the normal Wi-Fi network (YES in S78), The MFP 10 transmits to the portable terminal 50 wireless settings that do not include a password among the wireless settings of the AP stored in the work area 38.

  According to this configuration, when the MFP 10 does not belong to the same network as the portable terminal 50, the MFP 10 appropriately communicates print data with the portable terminal 50 via the normal Wi-Fi network to which the MFP 10 currently belongs. Can be executed.

(Correspondence)
The processing of S15 to S18, the processing of S72, the processing of S7 to S18, and the processing of S80 are examples of “specific processing”. When YES is determined in S4 of FIG. 14, the WFD network to which the MFP 10 belongs and the normal Wi-Fi network are examples of the “first wireless network”.

(5th Example)
Differences from the first embodiment will be described. In the present embodiment, the mobile terminal 50 includes NFC information further including a password, an authentication method, and an encryption method as wireless settings stored in the work area 58 when the mobile terminal 50 currently belongs to the network. Is transmitted to the MFP 10.

In this embodiment, the communication process of FIG. 17 is executed instead of the communication process of FIG. 17 are the same as the processes of S2 to S24 in FIG. In the case of either NO in S4 (that is, MFP 10 does not currently belong to the network) or NO in S6 (that is, MFP 10 and portable terminal 50 do not belong to the same network), S82 The determination unit 42 uses the NFC I / F 22 to determine whether the NFC information received from the portable terminal 52 includes a wireless setting. When it is determined that the wireless setting is included (YES in S82), the setting change unnecessary information is set to NF in S83.
It transmits to the portable terminal 50 using CI / F22. Next, in S84, the communication execution unit 44 belongs to the network to which the portable terminal 50 belongs using the wireless setting included in the NFC information, and proceeds to S20.

  On the other hand, when it is determined that the wireless setting is not included in the NFC information (NO in S82), the process proceeds to S8.

(Effect of this embodiment)
The MFP 10 of the fifth embodiment can achieve the same effects as the MFP 10 of the first embodiment in the first to fifth situations. With reference to FIG. 18, the effect of the present embodiment in the twelfth situation will be described. FIG. 18 shows a process corresponding to the communication process of FIG.

(Twelfth situation)
In the twelfth situation shown in FIG. 18, the MFP 10 does not currently belong to a network, or currently belongs to a network to which the portable terminal 50 does not belong. On the other hand, the portable terminal 50 currently belongs to the normal Wi-Fi network to which the AP 6 belongs.

  In this situation, when NFC information is received from the portable terminal 50 via the NFC I / F 22, the MFP 10 determines that the MFP 10 and the portable terminal 50 do not currently belong to the same network (NO in S4). Or NO in S6). Next, in S82, the MFP 10 determines that the wireless setting for belonging to the network to which the mobile terminal 50 currently belongs is included in the NFC information (YES in S82).

  Next, in S <b> 83, the MFP 10 transmits setting change unnecessary information to the portable terminal 50 using the NFC I / F 22. If NO in S4 (that is, if the MFP 10 does not currently belong to the network), the MFP 10 transmits setting change unnecessary information including the MAC address of the MFP 10 to the portable terminal 50. Also, if the MFP 10 is NO in S6 (that is, the MFP 10 currently belongs to the network, but the MFP 10 and the portable terminal 50 do not belong to the same network), the setting change unnecessary information including the IP address of the MFP 10 is displayed. It transmits to the portable terminal 50.

The MFP 10 establishes a normal Wi-Fi connection with the AP 6 using the wireless settings included in the NFC information (S84). If the setting change unnecessary information includes the IP address of the MFP 10, the portable terminal 50 designates the IP address as a transmission destination and transmits the print data to the MFP 10 via the AP 6 (S 20). In addition, when the setting change unnecessary information includes the MAC address of the MFP 10, the portable terminal 50 uses the RARP (Reverse Address).
According to Resolution Protocol, the IP address of the MFP 10 is specified, the specified IP address is specified as a transmission destination, and the print data is transmitted to the MFP 10 via the AP 6 (S20).

  According to this configuration, when the MFP 10 and the portable terminal 50 do not belong to the same network, the MFP 10 appropriately communicates print data with the portable terminal 50 via the network to which the portable terminal 50 currently belongs. Can run into.

(Correspondence)
The processes of S15 to S18 in FIG. 17 and the processes of S83 and S84 are examples of the “specific process”. When YES is determined in S <b> 82 of FIG. 17, the network to which the mobile terminal 50 belongs is an example of the “third wireless network”.

(Sixth embodiment)
Differences from the fourth embodiment will be described. In the present embodiment, the communication process of FIG. 19 is executed instead of the communication process of FIG. In the communication process of FIG. 19, when YES is determined in S10, the process of S72 of FIG. 14 is not executed and the same process as S14 of FIG. 2 is executed.

  According to this configuration, the same effect as in the third situation can be achieved.

(Seventh embodiment)
Differences from the first embodiment will be described. The MFP 10 of this embodiment includes a wired LAN I / F (not shown) in addition to the I / Fs 20 and 22. In the present embodiment, the communication process of FIG. 20 is executed instead of the communication process of FIG. S2, S8 to S24 in FIG. 20 are the same as the processes of S2, S8 to S24 in FIG.

  As shown in FIG. 20, when NFC information is received using the NFC I / F 22 (YES in S2), the determination unit 42 determines in S94 that the MFP 10 currently belongs to the wired network using the wired LAN I / F. Further, it is determined whether the MFP 10 currently belongs to the wireless network using the wireless LAN I / F 20. Specifically, when the MFP 10 currently belongs to the wired network using the wired LAN I / F, the MFP 10 stores information indicating that the MFP 10 currently belongs to the work area 38 of the memory 34. The determination unit 42 determines that it currently belongs to the wired network when information indicating that it currently belongs to the wired network is stored in the work area 38 (YES in S94). Further, when the work area 38 does not store information indicating that it currently belongs to the wired network, the determining unit 42 determines that it does not currently belong to the wired network (NO in S94). The determination as to whether the MFP 10 currently belongs to the wireless network is the same as in the first embodiment.

  If it is determined in S94 that the MFP 10 currently belongs to at least one of the wired network and the wireless network (YES in S94), the process proceeds to S96. If it is determined in S4 that the MFP 10 does not belong to either the wired network or the wireless network (NO in S94), the process proceeds to S8.

  In S96, the control unit 30 allows the MFP 10 and the portable terminal 50 to communicate target data with the portable terminal 50 via a network (a wired network or a wireless network) to which the MFP 10 currently belongs. It is determined whether or not the current state is correct. Concretely, it demonstrates according to the 13th condition of FIG.

  FIG. 21 shows an example in which the MFP 10 is connected to the AP 6 via a wired LAN, and the portable terminal 50 is connected to the AP 6 via a normal Wi-Fi network.

  In the sequence diagram of FIG. 21, communication using the wired LAN I / F is further represented by arrows. The arrow indicating the communication using the wired LAN I / F is written thicker than the arrow indicating the wireless communication using the wireless LAN I / F 20.

The MFP 10 receives NFC information from the portable terminal 50. The NFC information transmitted from the mobile terminal 50 includes the device ID and IP address of the mobile terminal 50. In S <b> 96, the determination unit 42 determines whether or not the MFP 10 can communicate with the portable terminal 50 via the network to which the MFP 10 currently belongs (wired LAN in the example of FIG. 21). Specifically, the determination unit unicasts a device ID inquiry using the wired LAN I / F. The determination unit 42 transmits an inquiry by specifying an IP address included in the NFC information as an inquiry transmission destination.

  When the portable terminal 50 receives the inquiry via the AP 6, the portable terminal 50 transmits the device ID of the portable terminal 50 to the MFP 10 that has transmitted the inquiry. When the determination unit 42 receives the device ID of the mobile terminal 50 via the AP 6 using the wired LAN I / F, whether the received device ID matches the device ID included in the NFC information. Determine whether. If the two device IDs match, the determination unit 42 determines YES in S96 and proceeds to S7. On the other hand, if there is no response to the inquiry or the two device IDs do not match, the determination unit 42 determines NO in S96 and proceeds to S8.

  According to this configuration, when the current state of the MFP 10 is communicable with the portable terminal 50, the MFP 10 executes communication of target data with the portable terminal 50 using the wired LAN I / F. be able to.

  In the first embodiment, in S6, it is determined whether the MFP 10 and the portable terminal 50 exist on the same network. On the other hand, in this embodiment, in S96, it is determined whether the MFP 10 and the portable terminal 50 can communicate with each other regardless of whether the MFP 10 and the portable terminal 50 exist in the same network.

(Correspondence)
The wireless LAN I / F wired LAN I / F is an example of the “second type interface”. A wired LAN is an example of a “first wireless network”. The device ID included in the NFC information is an example of “terminal identification information”.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The modifications of the above embodiment are listed below.

(Modification)
(1) The “communication device” is not limited to a multi-function device, and is another device (for example, a printer, a FAX device, a copier, a scanner, etc.) having a first type interface and a second type interface. Also good.

(2) The MFP 10 may store an AP program for functioning as an access point. When the AP program is activated, the control unit 30 may store a predetermined wireless setting in the work area 38. For example, in S15 of FIG. 2, the communication execution unit 44 may activate the AP program instead of setting the MFP 10 to the spontaneous G / O mode. Next, the communication execution unit 44 may transmit the wireless setting stored in advance in the work area 38 to the portable terminal 50. Then, the communication execution unit 44 and the portable terminal 50 may establish a connection using wireless settings stored in advance in the work area 38. In this case, the MFP 10 may establish a normal Wi-Fi connection with the portable terminal 50, and the MFP 10 may construct a normal Wi-Fi network. In the present modification, normal Wi-Fi that is executed with the portable terminal 50 when the MFP 10 starts an AP program and functions as an access point is an example of “specific wireless communication”. In addition, activation of an AP program, transmission of wireless settings, and establishment of a normal Wi-Fi connection are examples of “specific processing”.

(3) The combination of the “first type interface” and the “second type interface” is not limited to the combination of the NFC I / F and the wireless LAN I / F. For example, when the wireless LAN I / F is adopted as the “second type interface”, the “first type interface” may be an interface for executing infrared communication, or Bluetooth.
It may be an interface for executing (registered trademark), or an interface for executing Transfer Jet. In addition, when NFC I / F is adopted as the “first type interface”, the “second type interface” may be an interface for executing wired communication, or Bluetooth (registered trademark) may be used. It may be an interface for execution. Generally speaking, it is only necessary that the communication speed of communication through the second type interface is higher than the communication speed of communication through the first type interface.

(4) The “first type interface” and the “second type interface” are physically two interfaces (that is, two separate IC chips) as in the above embodiment. Alternatively, it may be physically one interface (that is, two kinds of communication are realized by one IC chip).

(5) In each of the above embodiments, there is physically one interface for executing wireless communication in accordance with the WFD scheme and an interface for executing wireless communication in accordance with normal Wi-Fi. The interface (wireless LAN I / F 20) may be physically a plurality of interfaces (that is, two separate IC chips). In the present modification, the plurality of interfaces are an example of “second type interface”.

(6) In the first, second, fourth to seventh embodiments, the communication execution unit 44 sets the MFP 10 to the spontaneous G / O mode in S15. However, the communication execution unit 44 may execute the processes of S54 to S62 in FIG. 11 instead of S15 to S18 when the mobile terminal 50 can execute wireless communication in accordance with the WFD method. In the present modification, the processing of S54 to S62 is an example of “specific processing”.

(7) In the seventh embodiment, the determination unit 42 designates the IP address included in the NFC information (that is, the IP address of the portable terminal 50) as a transmission destination, and transmits a device ID inquiry. However, the determination unit 42 may broadcast a device ID inquiry via the network to which the MFP 10 currently belongs (which may be a wired network or a wireless network). In this case, the device ID inquiry may include a device ID included in the NFC information. When the mobile terminal 50 receives the broadcast inquiry, if the device ID included in the inquiry is the device ID of the mobile terminal 50, the mobile terminal 50 may transmit a response to the inquiry to the MFP 10 that is the transmission source of the inquiry. . The MFP 10 may receive a response to the inquiry via the network to which the MFP 10 currently belongs. When the response is received, the determination unit 42 may determine that the current state of the MFP 10 is a state in which communication with the portable terminal 50 is possible (YES in S6 of FIG. 2). According to this modification, when the MFP 10 and the portable terminal 50 are in the same subnet, YES can be determined in S6 of FIG. In the present modification, the determination in S6 is an example of determination by the MFP 10 “whether the mobile terminal currently belongs to a specific network to which the communication apparatus currently belongs”.

(8) In each embodiment described above, each unit 40 to 46 is realized by software, but at least one of each unit 40 to 46 may be realized by hardware such as a logic circuit.

  The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

2: communication system, 6: AP, 8: PC, 10: MFP, 20: wireless LAN interface, 22: NFC interface, 30: control unit, 50: portable terminal

Claims (19)

A communication device,
A first type interface for communicating with a mobile terminal;
A second type interface for executing communication with the portable terminal, wherein a communication speed using the second type interface is higher than a communication speed using the first type interface. The second type interface;
A control unit,
The controller is
A receiving unit for receiving specific information from the portable terminal using the first type interface;
Determination using the specific information to determine whether or not the communication device is currently in a communicable state in which communication of the target data with the portable terminal can be performed using the second type interface. And
When it is determined that the communication device is not currently in the communicable state, after executing a specific process for changing the communication device to the communicable state, using the second type interface, Execute communication of the target data with the portable terminal,
When it is determined that the communication device is currently in the communicable state, the target data is communicated with the portable terminal using the second type interface without executing the specific process. A communication execution unit. The determination unit uses the specific information to check whether the mobile terminal currently belongs to a specific network to which the communication apparatus currently belongs, so that the communication apparatus Determine whether it is possible,
The communication device according to claim 1, wherein the specific network is a network for the communication device to perform communication using the second type interface. The second type interface is an interface for the communication device to execute specific wireless communication,
The specific wireless communication is wireless communication performed by the communication device and the mobile terminal without using an access point different from the communication device and the mobile terminal,
The specific process includes a process for the communication device and the mobile terminal to execute the specific wireless communication using the second type interface,
When the current state of the communication device is determined not to be the communicable state, the communication execution unit uses the second type interface to execute the specific process and then execute the specific process. The communication device according to claim 1, wherein the specific wireless communication of the target data is executed. The communication apparatus includes a master station state that functions as a master station of a wireless network, a slave station state that functions as a slave station of the wireless network, and a device state that is different from the master station state and the slave station state. Can selectively operate in any one of a plurality of states,
The communication device is capable of executing the specific wireless communication via the wireless network by operating in one of the master station state and the slave station state in the wireless network,
The communication execution unit
In a first case where the communication device is currently determined not to be in a communicable state and the communication device currently belongs to a first wireless network for performing the specific wireless communication, Performing the specific process of transmitting a first wireless setting for the portable terminal to belong to the first wireless network to the portable terminal using the first type interface;
In the second case where the communication device is determined not to be currently in the communicable state and the communication device does not currently belong to the first wireless network, the communication device is configured to perform the specific wireless communication. 4. The second wireless network for executing the communication, wherein the specifying process for newly constructing the second wireless network to which the communication device and the mobile terminal should belong is executed. Communication equipment. The communication execution unit
In the first case, when the communication device is operating as the master station state in the first wireless network, the identification process of transmitting the first wireless setting to the mobile terminal is executed,
5. In the first case, when the communication device is operating as the slave station state in the first wireless network, the first wireless setting is not transmitted to the mobile terminal. The communication device described.   In the specific case, the communication execution unit does not execute the specific process, and indicates that the communication device does not execute communication of the target data with the portable terminal, the first type interface The communication device according to claim 5, wherein the communication device is transmitted to the mobile terminal by using.   The said communication execution part performs the said specific process for newly constructing | assembling the said 2nd wireless network, after making the said communication apparatus leave | separate from the said 1st wireless network in the said specific case. 5. The communication device according to 5.   In the second case, the communication execution unit selectively determines whether the communication device should operate in the master station state or the slave station state in the second wireless network. The process according to any one of claims 4 to 7, wherein the communication apparatus executes the specific process including a process of determining that the communication apparatus should operate as the master station state in the second wireless network without executing the process. The communication device according to one item.   In the second case, the communication execution unit selectively determines whether the communication device should operate in the master station state or the slave station state in the second wireless network. The communication apparatus according to claim 4, wherein the specific process including a process for executing the process is executed. The control unit further includes:
According to a user instruction, the mode of the communication device is changed to a first mode in which the communication device can belong to a wireless network for executing the specific wireless communication, and the communication device performs the specific wireless communication. A mode setting unit configured to set one of the second modes that cannot belong to the wireless network for execution;
The communication execution unit changes the mode of the communication device from the second mode to the first mode in the second case and when the communication device is set to the second mode. The communication apparatus according to any one of claims 4 to 9, wherein the specifying process for changing to a mode and newly constructing the second wireless network is executed. The communication device is an external device different from the portable terminal when the mode of the communication device is the first mode, and performs wireless communication with the external device belonging to the second wireless network. Is feasible,
The communication execution unit
The mode of the communication device is changed from the second mode to the first mode, and the specific wireless communication of the target data with the portable terminal via the constructed second wireless network When the external device currently belongs to the second wireless network, the mode of the communication device is not changed from the first mode to the second mode.
The mode of the communication device is changed from the second mode to the first mode, and the specific wireless communication of the target data with the portable terminal via the constructed second wireless network The communication device mode is changed from the first mode to the second mode when the external device does not currently belong to the second wireless network after the above is executed. The communication apparatus as described in. The second type interface is an interface for the communication device to perform wireless communication of the target data with the portable terminal,
The communication execution unit determines that the current state of the communication device is not the communicable state, and the communication device executes a specific communication for executing the wireless communication using the second type interface. The specific process of transmitting a specific wireless setting for the portable terminal to belong to the specific wireless network to the portable terminal using the first type interface when currently belonging to the wireless network. The communication device according to claim 1, wherein the communication device is executed. The communication device uses the second type interface to perform specific wireless communication that the communication device and the mobile terminal execute without using an access point different from the communication device and the mobile terminal; Other wireless communications performed via the access point can be performed,
The communication execution unit
When the communication device belongs to the specific network for executing the specific wireless communication, the mobile terminal is a specific wireless setting for belonging to the specific network, and includes a password Performing the specific process of transmitting specific wireless settings;
13. The identification process of transmitting the specific wireless setting that does not include the password is executed when the communication device belongs to the specific network for performing the other wireless communication. The communication device described. The second type interface is an interface for the communication device to perform wireless communication of the target data with the portable terminal,
The specific information includes a third wireless setting for the communication device to belong to a third wireless network to which the mobile terminal currently belongs,
The communication execution unit, when it is determined that the current state of the communication device is not the communicable state, the communication device belongs to the third wireless network using the third wireless setting. The communication apparatus according to claim 1, wherein the specific process for executing the identification process is executed. The specific network to which the communication device currently belongs is a specific wireless network;
The specific information includes an identifier of the third wireless network that the mobile terminal is currently continuing,
The determination unit
By checking whether or not the identifier of the third wireless network included in the specific information matches a specific identifier for identifying the specific wireless network, the communication device The communication apparatus according to claim 2, wherein it is determined whether or not the mobile terminal currently belongs to the specific wireless network to which the mobile terminal belongs.   The communication device according to claim 15, wherein the determination unit determines that the mobile terminal does not currently belong to the specific network when a wireless network identifier is not included in the specific information. The determination unit
When the specific information includes terminal identification information for identifying the mobile terminal,
When the terminal identification information is acquired via the specific network by executing communication using the second type interface, the mobile terminal currently belongs to the specific network. Judgment
When the terminal identification information is not acquired via the specific network by executing communication using the second type interface, it is determined that the portable terminal does not currently belong to the specific network. The communication device according to claim 2. The determination unit
When the specific information includes the IP address of the mobile terminal,
By executing communication using the second type interface, an inquiry in which the IP address is designated as a destination is transmitted to the specific network,
In response to the inquiry, when a response from the mobile terminal is received, it is determined that the communication is possible,
The communication device according to claim 1, wherein when the response from the mobile terminal is not received with respect to the inquiry, the communication device determines that the communication is not possible. The first type interface for executing communication with the portable terminal and the second type interface for executing communication with the portable terminal, wherein the communication speed of communication using the second type interface is: A computer program for a communication device comprising the second type interface, which is faster than the communication speed of communication using the first type interface,
In the computer mounted on the communication device, the following processing, that is,
A reception process for receiving specific information from the mobile terminal using the first type interface;
Determination using the specific information to determine whether or not the communication device is currently in a communicable state in which communication of the target data with the portable terminal can be performed using the second type interface. Processing,
When it is determined that the communication device is not currently in the communicable state, the second type interface is used after executing a specific process for changing the state of the communication device to the communicable state. And performing communication of the target data with the portable terminal,
When it is determined that the communication device is currently in a communicable state, communication of the target data with the portable terminal is performed using the second type interface without executing the specific process. And a computer program to be executed.

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