JP2017085518A - Communication apparatus, control method for communication apparatus, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem in that after a power source is turned off during communication with an external device, appropriate control to determine whether reconnection should be tried or not when a power source is turned on again has not been exerted.SOLUTION: A communication apparatus comprises: first communication means that communicates with an external device in a first communication system; second communication means sharing a communication parameter with the external device; and control means that exerts control so as to establish communication with the external device in the first communication system according to an operation by a user or sharing of the communication parameter. If the power source of the communication device is turned on after the power source of the communication device is turned off during communication with the external device, which has established according to the operation by the user, control is exerted so as to allow automatic communication with the external device in the first communication system. If the power source of the communication device is turned on after the power source of the communication device is turned off during communication with the external device, which has established according to the sharing of the communication parameter, control is not exerted so as to allow automatic communication with the external device in the first communication system.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a communication device that communicates with an external device by wireless communication.

  Conventionally, wireless communication between a camera and an external device may be disconnected even though the user does not intend. Specifically, the wireless communication is disconnected by turning off the power of the camera unintentionally by the user due to an erroneous operation of the power button, insertion / removal of a recording medium, battery replacement, or the like. In this case, it is necessary for the user to turn on the power again and perform the wireless setting again. In order to save the user from having to input the wireless communication settings again, if the wireless communication is in progress when the power is turned off, the last communication is automatically performed the next time the power is turned on. It is controlled to try to communicate with the communication parameters. As a result, if the communication partner is within the communication range, it is possible to automatically reconnect.

  On the other hand, in recent years, devices that can perform wireless communication without using a user input operation by sharing communication parameters of wireless communication between the camera and an external device using proximity wireless communication have also appeared. Thus, not only reconnection but also the connection between the camera and the external device for the first time can be saved by saving the trouble of inputting the wireless communication setting.

JP 2011-244327 A

  However, it is considered that there are many cases where the use scene of the user is different between the case where the wireless communication is established using the proximity wireless communication and the case where the user inputs the setting and establishes the wireless communication. For example, when establishing wireless communication using close proximity wireless communication, it is not necessary to input communication parameters, and therefore, it is easy to use it when temporarily communicating with another device rather than a camera user. In this case, automatic connection with another device when the power is turned on again should be avoided from the viewpoint of security. Further, since it is possible to reconnect simply by bringing it close again without being automatically connected when the power is turned on again, there is little need to automatically attempt reconnection from the viewpoint of the amount of user operations that can be omitted.

  Therefore, an object of the present invention is to appropriately control whether or not reconnection is attempted when the power is turned on again.

  In order to achieve the above object, the communication device of the present invention includes a first communication unit that communicates with an external device using a first communication method, and a second communication method that is different from the first communication method. Communicating with the device and communicating with the external device using the first communication method and second communication means sharing the communication parameter used to establish communication with the first communication method with the external device Receiving means for accepting the user's operation, and according to any of the user's operation accepted by the accepting means and sharing of the communication parameters by the second communication means Control means for controlling to establish communication with the external device, and after the communication device is turned off during communication with the external device established in response to the user's operation, the communication When the power of the device is turned on, the control means automatically controls to communicate again with the external device by the first communication method, and according to the sharing of the communication parameters by the second communication means When the communication device is turned on after the communication device is turned off during communication with the external device established in the above, the control means automatically uses the first communication method. It is not controlled to communicate with the external device again.

  According to the present invention, it is possible to appropriately control whether or not reconnection is attempted when the power is turned on.

(A) It is a block diagram of the digital camera in 1st Embodiment. (B), (c) It is an external view of the digital camera in 1st Embodiment. It is an image figure of the communication system which consists of a digital camera and a smart phone in 1st Embodiment. (A) It is a figure for demonstrating operation in the case of performing the establishment process of the wireless LAN communication with a digital camera and a smart phone by a user's menu operation in 1st Embodiment. (B) It is a figure for demonstrating operation in the case of performing the establishment process of the wireless LAN communication of a digital camera and a smart phone by near field communication. It is a sequence diagram for demonstrating the reconnection procedure of the wireless LAN communication established by the user's menu operation in 1st Embodiment. It is a sequence diagram for demonstrating the reconnection procedure of the wireless LAN communication established by proximity | contact wireless communication in 1st Embodiment. (A) It is a flowchart which shows the cutting | disconnection operation | movement of the wireless LAN connection of the digital camera in 1st Embodiment. (B) It is a flowchart which shows the reconnection operation | movement of the wireless LAN connection of the digital camera in 1st Embodiment. (A) It is a figure which shows a mode that wireless LAN connection is established using proximity | contact wireless communication in the state in which the digital camera in 2nd Embodiment is not a reproduction | regeneration mode. (B) It is a figure which shows a mode that the digital camera in 2nd Embodiment establishes wireless LAN connection using proximity | contact wireless communication in the state of reproduction | regeneration mode. It is a sequence diagram of the reconnection procedure of the wireless LAN communication established by the proximity wireless communication in a state other than the playback mode in the second embodiment. It is a sequence diagram of the reconnection procedure of the wireless LAN communication established by the proximity wireless communication in the reproduction mode in the second embodiment. (A) It is a flowchart which shows the cutting | disconnection operation | movement of the wireless LAN connection of the digital camera in 2nd Embodiment. (B) It is a flowchart which shows the reconnection operation | movement of the wireless LAN connection of the digital camera in 2nd Embodiment. It is a block diagram of the digital camera in other embodiments.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated in detail using attached drawing.

  The embodiment described below is an example as means for realizing the present invention, and may be appropriately modified or changed depending on the configuration of the apparatus to which the present invention is applied and various conditions. Moreover, it is also possible to combine each embodiment suitably.

[First Embodiment]
<Configuration of digital camera>
FIG. 1A is a block diagram illustrating a configuration example of a digital camera 100 that is an example of a communication apparatus according to the present embodiment. Although a digital camera is described here as an example of a communication device, the communication device is not limited to this. For example, the communication device may be an information processing device such as a portable media player, a so-called tablet device, or a personal computer.

  The control unit 101 controls each unit of the digital camera 100 according to an input signal and a program described later. Note that instead of the control unit 101 controlling the entire apparatus, a plurality of hardware may share the processing to control the entire apparatus.

  The imaging unit 102 includes, for example, an optical lens unit, an optical system that controls the aperture, zoom, focus, and the like, and an imaging device that converts light (video) introduced through the optical lens unit into an electrical video signal. Composed. In general, a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device) is used as the imaging element. The imaging unit 102 is controlled by the control unit 101 to convert subject light imaged by a lens included in the imaging unit 102 into an electrical signal by the imaging device, and perform noise reduction processing or the like to convert the digital data into an image. Output as data. In the digital camera 100 of the present embodiment, the image data is recorded on the recording medium 110 in accordance with the DCF (Design Rule for Camera File System) standard.

  The non-volatile memory 103 is an electrically erasable / recordable non-volatile memory, and stores a program to be described later executed by the control unit 101.

  The work memory 104 is used as a buffer memory that temporarily holds image data picked up by the image pickup unit 102, an image display memory of the display unit 106, a work area of the control unit 101, and the like.

  The operation unit 105 is used for the user to accept an instruction for the digital camera 100 from the user. The operation unit 105 includes, for example, a power button for instructing the user to turn on / off the digital camera 100, a release switch for instructing photographing, and a reproduction button for instructing reproduction of image data. Furthermore, an operation member such as a dedicated connection button for starting communication with an external device via the wireless communication unit 111 described later is included. A touch panel formed on the display unit 106 described later is also included in the operation unit 105. The release switch has SW1 and SW2. When the release switch is in a so-called half-pressed state, SW1 is turned on. As a result, an instruction for making preparations for shooting such as AF (autofocus) processing, AE (automatic exposure) processing, AWB (auto white balance) processing, and EF (flash pre-emission) processing is accepted. Further, when the release switch is in a fully-pressed state, SW2 is turned on. As a result, an instruction for photographing is received.

  The display unit 106 displays a viewfinder image at the time of shooting, displays shot image data, and displays characters for interactive operation. Note that the display unit 106 is not necessarily built in the digital camera 100. The digital camera 100 can be connected to an internal or external display unit 106 and only needs to have at least a display control function for controlling display on the display unit 106.

  The recording medium 110 can record the image data output from the imaging unit 102. The recording medium 110 may be configured to be detachable from the digital camera 100 or may be built in the digital camera 100. That is, the digital camera 100 only needs to have a means for accessing at least the recording medium 110.

  The wireless communication unit 111 is an interface for connecting to an external device. The digital camera 100 of the present embodiment can exchange data with an external device via the wireless communication unit 111. For example, image data generated by the imaging unit 102 can be transmitted to an external device via the wireless communication unit 111. In the present embodiment, the wireless communication unit 111 includes an interface for communicating with an external device via a so-called wireless LAN in accordance with the IEEE 802.11 standard. The control unit 101 realizes wireless communication with an external device by controlling the wireless communication unit 111. Note that the communication method is not limited to the wireless LAN, and includes, for example, an infrared communication method. The wireless communication unit 111 is an example of a first wireless communication unit.

  The close proximity wireless communication unit 112 includes, for example, an antenna for wireless communication and a modulation / demodulation circuit and a communication controller for processing wireless signals. The proximity wireless communication unit 112 outputs non-contact proximity communication by outputting a modulated wireless signal from the antenna and demodulating the wireless signal received by the antenna. Here, non-contact proximity communication according to the ISO / IEC 18092 standard (so-called NFC: Near Field Communication) is realized. The close proximity wireless transfer unit 112 of the present embodiment is disposed on the side of the digital camera 100.

  The smartphone 200 described later is connected by starting communication by bringing the close proximity wireless communication units close to each other. In addition, when connecting using a close proximity wireless communication part, it is not necessary to contact close proximity wireless communication parts. Since the close proximity wireless communication unit can communicate even if they are separated from each other by a certain distance, in order to connect the devices to each other, it is only necessary to approach the range where close proximity wireless communication is possible. In the following description, it is also referred to as bringing close to the range where close proximity wireless communication is possible.

  Further, when the close proximity wireless communication units are within a range where close proximity wireless communication is possible and the digital camera 100 is connected to the smartphone 200, the close proximity wireless communication units are separated from the range where close proximity wireless communication is not possible. If this happens, the connection is released. The contactless proximity communication realized by the proximity wireless communication unit 112 is not limited to NFC, and other wireless communication may be employed. For example, non-contact proximity communication according to the ISO / IEC 14443 standard may be adopted as non-contact proximity communication realized by the proximity wireless communication unit 112.

  In the present embodiment, the communication speed realized by the wireless communication unit 111 is faster than the communication speed realized by the close proximity wireless communication unit 112. Further, the communication realized by the wireless communication unit 111 has a wider communication range than the communication by the close proximity wireless communication unit 112. Instead, in the communication by the close proximity wireless communication unit 112, since the communication partner can be limited by the narrowness of the communicable range, processing such as exchange of encryption keys necessary for communication realized by the wireless communication unit 111 is performed. do not need. That is, it is possible to communicate more easily than using the wireless communication unit 111.

  Note that the wireless communication unit 111 of the digital camera 100 in this embodiment has an AP mode that operates as an access point in the infrastructure mode, and a CL mode that operates as a client in the infrastructure mode. Then, by operating the wireless communication unit 111 in the CL mode, the digital camera 100 in the present embodiment can operate as a CL device in the infrastructure mode. When the digital camera 100 operates as a CL device, it can participate in a network formed by the AP device by connecting to a peripheral AP device. In addition, by operating the wireless communication unit 111 in the AP mode, the digital camera 100 according to the present embodiment operates as a simple AP (hereinafter referred to as a simple AP) that is a kind of AP but has more limited functions. It is also possible. When the digital camera 100 operates as a simple AP, the digital camera 100 forms a network by itself. Devices around the digital camera 100 can recognize the digital camera 100 as an AP device and participate in a network formed by the digital camera 100. It is assumed that a program for operating the digital camera 100 is held in the nonvolatile memory 103 as described above.

  Note that although the digital camera 100 in this embodiment is a kind of AP, it is a simple AP that does not have a gateway function for transferring data received from a CL device to an Internet provider or the like. Therefore, even if data is received from another device participating in the network formed by the own device, it cannot be transferred to a network such as the Internet.

  Next, the appearance of the digital camera 100 will be described. 1B and 1C are diagrams illustrating an example of the appearance of the digital camera 100. FIG. The release switch 105a, the playback button 105b, the direction key 105c, the touch panel 105d, and the power button 105e are operation members included in the operation unit 105 described above. Further, the display unit 106 displays an image obtained as a result of imaging by the imaging unit 102. In addition, the digital camera 100 according to the present embodiment has an antenna portion of the close proximity wireless transfer unit 112 on the side surface of the camera housing. Proximity wireless communication with other devices can be established by bringing the proximity wireless communication units 112 closer to each other at a certain distance. Thereby, it is possible to communicate in a non-contact manner without using a cable or the like, and it is possible to limit communication partners according to the user's intention.

  The above is the description of the digital camera 100.

<System overview>
FIG. 2 is an image diagram of a communication system in which the digital camera 100 of the present embodiment includes a smartphone 200. The digital camera 100 of the present embodiment communicates with the smartphone 200 using NFC, which is a first wireless communication method. Furthermore, communication parameters necessary for both devices to establish communication via the wireless LAN that is the second wireless communication method are shared via NFC. As a result, the user can easily establish wireless communication using the wireless LAN simply by bringing both devices close to each other.

<Outline of connection procedure>
FIG. 3 is a diagram for explaining a wireless LAN connection procedure between the digital camera 100 and the smartphone 200. FIG. 3A is a diagram for explaining an operation in a case where a wireless LAN communication establishment process between the digital camera 100 and the smartphone 200 is performed by a user's menu operation. In FIG. 3A, the digital camera 100 receives a wireless communication menu display and a wireless function execution instruction from the user via the direction key 105c and the touch panel 105d. For example, the user inputs an instruction by selecting yes / no according to the guidance displayed on the screen.

  When an instruction to execute the wireless function is input, an SSID (Service Set Identifier) that is a network identifier generated by the digital camera 100 and a password are displayed on the display unit 106.

  While confirming this display, the user inputs the SSID and password displayed on the display unit 106 of the camera on the smartphone 200, and causes the smartphone 200 to participate in the network generated by the digital camera 100. Thereafter, for example, by executing a predetermined application on the smartphone 200, a connection at the application layer with the digital camera 100 is automatically established, and a service using wireless communication can be used.

  The above is the operation procedure when the wireless LAN communication establishment process between the digital camera 100 and the smartphone 200 is performed by operating the operation unit 105.

  FIG. 3B is a diagram for explaining an operation in the case of performing establishment processing for wireless LAN communication between the digital camera 100 and the smartphone 200 by proximity wireless communication. In FIG. 3B, the user brings the proximity wireless communication unit 112 of the digital camera 100 close to the proximity wireless communication unit of the smartphone 200. Thereby, communication by NFC is performed, and communication parameters necessary for both devices to establish communication via the wireless LAN are shared between both devices. Thereafter, the digital camera 100 automatically generates a network using the shared communication parameters, while the smartphone 200 automatically participates in the network generated by the digital camera 100 using the shared communication parameters. Thereby, the user can establish communication via the wireless LAN simply by bringing the devices close to each other.

<Reconnection procedure of wireless LAN communication established by user menu operation>
FIG. 4 is a sequence diagram illustrating a procedure for reconnecting after the wireless LAN connection established by operating the digital camera 100 according to the present embodiment and inputting a communication parameter by the user is disconnected.

  First, the operation unit 105 performs an operation for establishing a wireless LAN connection between the digital camera 100 and the smartphone 200. The outline of this operation is as described in FIG. Accordingly, the control unit 101 receives a control signal from the operation unit 105 (P401).

  Next, the control unit 101 requests the wireless communication unit 111 to start a wireless LAN connection (P402). In parallel with this step, the control unit 101 causes the display unit 106 to display information necessary for connecting to the smartphone 200 via a wireless LAN. Specifically, an SSID (Service Set Identifier) that is a network identifier generated by the digital camera 100 and a password are displayed. In response to a wireless LAN connection start request from the control unit 101, the wireless communication unit 111 activates the AP function to start beacon transmission and generates a network.

  On the other hand, on the smartphone 200, the user inputs the SSID and password displayed on the display unit 106 of the digital camera 100. Accordingly, the smartphone 200 establishes a wireless LAN connection between the digital camera 100 and the smartphone 200 by participating in the network generated by the wireless communication unit 111 of the digital camera 100 (P403).

  If the wireless LAN connection is established, the wireless communication unit 111 notifies the control unit 101 that the wireless LAN connection with the smartphone 200 has been completed (P404).

  Upon receiving the wireless LAN connection completion notification from the wireless communication unit 111, the control unit 101 writes connection information with the smartphone 200 in the nonvolatile memory 103 (P405). As a result, the connection information is stored in the nonvolatile memory 103 (P406). The connection information includes, in addition to the SSID described above, a wireless LAN channel number, an IP address of the digital camera 100, a MAC address of the smartphone 200, and the like. The wireless LAN connection process between the digital camera 100 and the smartphone 200 is thus completed. Thereafter, the user can use the wireless communication function between the digital camera 100 and the smartphone 200.

  Here, for example, consider a case where the power-off process of the digital camera 100 is started by the user accidentally pressing the power button 105e. In this case, a trigger for turning off the camera power is issued from the operation unit 105 to the control unit 101 (P407).

  Receiving this, the control unit 101 confirms that the current wireless LAN connection to the nonvolatile memory 103 is a connection established by a user operation on the operation unit 105 before actually turning off the power of the camera. The indicated information (connection form) is written (P408). The non-volatile memory 103 stores information on the wireless LAN connection by the operation unit 105 (P409).

  Thereafter, the control unit 101 requests the wireless communication unit 111 to disconnect the wireless LAN (P410). Upon receiving the wireless LAN disconnection request, the wireless communication unit 111 disconnects the wireless LAN connection with the smartphone 200 (P411).

  When the disconnection process is completed, the wireless communication unit 111 notifies the control unit 101 of the completion of disconnection of the wireless LAN (P412). Upon receiving the wireless LAN disconnection completion notification, the control unit 101 stops the power supply to each peripheral device constituting the digital camera 100 described with reference to FIG. 1 (P413). The power OFF process of the digital camera 100 is completed as described above.

  Now, consider that the user noticed that the power was accidentally turned off, and turned on again.

  In this case, the user presses the power button 105e again. As a result, an instruction to turn on the camera power is input to the control unit 101 (P414). Upon receiving an instruction to turn on the camera power, the control unit 101 starts power supply to each peripheral device constituting the digital camera 100 described with reference to FIG. 1 (P415). At this time, the control unit 101 reads the connection form from the nonvolatile memory 103 (P416). Then, the control unit 101 confirms whether or not the read connection form indicates that the wireless LAN connection is a connection established by a user operation on the operation unit 105 (P417).

  Here, it is confirmed that the wireless LAN connection indicates a connection established by a user operation on the operation unit 105, and the control unit 101 determines that reconnection should be performed. This is because when a user inputs settings and establishes wireless communication, it is necessary to input a password for communication parameters to both the camera and the external device. It is thought that there are many cases where it is connected to a telephone. Also, not using close proximity wireless communication means that the communication partner may not support close proximity wireless communication. Therefore, in this case, it is considered that reconnection is more likely to save the user's trouble. Therefore, the control unit 101 reads connection information from the storage unit 103 (P418). Then, the control unit 101 requests the wireless communication unit 111 to start a wireless LAN connection using the read connection information (P419). In response to the request from the control unit 101, the wireless communication unit 111 performs wireless LAN connection again with the smartphone 200 based on the connection information (P420). When the wireless LAN connection process is completed, the wireless communication unit 111 notifies the control unit 101 that the wireless LAN connection with the smartphone 200 has been completed (P421). This completes the wireless LAN reconnection process between the digital camera 100 and the smartphone 200.

  When power is supplied to each unit in P415, the digital camera 100 enters a shooting mode and starts displaying a through image. The operations of P416 to P421 are performed in parallel in the background of the operation in this shooting mode.

<Reconnection procedure of wireless LAN communication established by proximity wireless communication>
FIG. 5 is a sequence diagram showing a procedure for reconnecting after the connection of the wireless LAN established by sharing the communication parameters using the close proximity wireless communication unit of the digital camera 100 in the present embodiment is disconnected.

  First, as shown in FIG. 3B, the user brings the smartphone 200 close to the close proximity wireless communication unit 112 of the digital camera 100 (P501). Accordingly, NFC communication is performed between the digital camera 100 and the smartphone 200, and communication parameters used for wireless LAN connection are shared (P502). In the present embodiment, the communication parameters recorded in the NFC tag of the digital camera 100 are read out by the NFC reader / writer of the smartphone 200, whereby the communication parameters are shared between the devices.

  Further, the close proximity wireless transfer unit 112 notifies the control unit 101 that there has been NFC communication (P503). In response to this, the control unit 101 reads out communication parameters from the close proximity wireless communication unit 112, and requests the wireless communication unit 111 to start a wireless LAN connection using the read communication parameters (P504).

  In response to this request, the wireless communication unit 111 activates the AP function to start beacon transmission and generates a network.

  On the other hand, the smartphone 200 joins the network of the digital camera 100 using the communication parameters acquired in P502, thereby establishing a wireless LAN connection between the digital camera 100 and the smartphone 200 (P505). When the wireless LAN connection with the smartphone 200 is completed, the wireless communication unit 111 notifies the control unit 101 of the completion of the wireless LAN connection (P506).

  Upon receiving this notification, the control unit 101 writes the wireless LAN connection information with the smartphone 200 in the nonvolatile memory 103 as a communication history (P507). The connection information notified from the control unit 101 is stored in the nonvolatile memory (P508). The wireless LAN connection process between the digital camera 100 and the smartphone 200 is thus completed.

  Here, for example, consider a case where the power-off process of the digital camera 100 is started by the user pressing the power button 105e. In this case, a trigger for turning off the camera power is issued from the operation unit 105 to the control unit 101 (P509).

  The control unit 101 that has received this information indicates that the current wireless LAN connection is established by using the proximity wireless communication unit 112 to the nonvolatile memory 103 before turning off the power. Write (connection form) (P510). Information indicating that the wireless LAN connection at the time of disconnection is established by operating the operation unit 105 is recorded in the nonvolatile memory 103 (P511).

  Thereafter, the control unit 101 requests the wireless communication unit 111 to disconnect the wireless LAN connection (P512). In response to the wireless LAN disconnection request, the wireless communication unit 111 disconnects the wireless LAN connection with the smartphone 200 (P513).

  When the disconnection process is completed, the wireless communication unit 111 notifies the control unit 101 of the completion of disconnection of the wireless LAN (P514). Upon receiving the wireless LAN disconnection completion notification, the control unit 101 stops the power supply to each unit constituting the digital camera 100 described with reference to FIG. 1 (P515). The power OFF process of the digital camera 100 is completed as described above.

  Further, consider that the user turns on the power again.

  In this case, the user presses the power button 105e again. As a result, an instruction to turn on the camera power is input to the control unit 101 (P516). Upon receiving an instruction to turn on the camera power, the control unit 101 starts power supply to each unit constituting the digital camera 100 described with reference to FIG. 1 (P517). At this time, the control unit 101 reads the connection form from the nonvolatile memory 103 (P518). Then, the control unit 101 confirms whether or not the read connection form indicates that the wireless LAN connection when receiving the power-off instruction indicates a connection established by using the close proximity wireless communication unit 112. (P519).

  Here, it is confirmed that the wireless LAN connection indicates a connection established by using the close proximity wireless communication unit 112, and the control unit 101 determines that reconnection should not be performed. This is because the user has already experienced that a wireless LAN connection can be easily established by bringing the digital camera 100 closer to the smartphone 200, so it is natural to try again when reconnecting. It is. That is, instead of bringing the digital camera 100 close to the smartphone 200, when the digital camera 100 is activated by pressing the power button, it is expected that the user has not turned on the power to desire connection again. In this case, for example, it is conceivable to turn on the power to perform shooting processing and playback processing. Therefore, the control unit 101 ends this sequence without attempting to re-establish a wireless LAN connection with the smartphone 200.

<Disconnecting Wireless LAN Connection of Digital Camera 100>
FIG. 6A is a flowchart showing an operation when the wireless LAN connection of the digital camera 100 of this embodiment is disconnected. Note that the processing shown in this flowchart is realized by the control unit 101 of the digital camera 100 controlling each unit of the digital camera 100 in accordance with an input signal or a program. The same applies to other flowcharts showing processing of the digital camera 100 unless otherwise specified. This flowchart starts when the digital camera 100 is powered on.

  First, in step S601, the control unit 101 receives a power OFF operation. Specifically, the control unit 101 monitors the state of the power button 105e and checks whether or not the power button 105e has been pressed by the user. If not pressed, monitoring is continued until the button is pressed. If pressed, the control unit 101 determines that an instruction to turn off the power has been given.

  Next, in step S <b> 602, the control unit 101 determines whether a wireless LAN connection is being established with the smartphone 200 before starting the power-off process. If it is determined that the connection is being established, the process proceeds to step S603.

  In step S <b> 603, the control unit 101 stores the wireless LAN connection mode with the smartphone 200 in the nonvolatile memory 103. Here, information indicating whether the current wireless LAN connection has been established by using close proximity wireless communication or has been established by inputting a setting by a user's menu operation is stored.

  Thereafter, in step S604, the control unit 101 requests the wireless communication unit 111 to disconnect the wireless LAN, and the wireless communication unit 111 disconnects the wireless LAN connection with the smartphone 200. When the disconnection is completed, the wireless communication unit 111 notifies the control unit 101 that the wireless LAN connection with the smartphone 200 has been disconnected.

  In response to this notification, in step S605, the control unit 101 stops power supply to each unit constituting the digital camera 100 described with reference to FIG.

  On the other hand, when the control unit 101 determines in step S602 that the smartphone 200 is not connected to the wireless LAN, the process proceeds to step S605 without passing through steps S603 to S604. In this case, connection type information is not recorded in the nonvolatile memory 103. If connection type information has been recorded in the past, the information is deleted and the process of step S605 is executed.

  The above is the description of the operation when disconnecting the wireless LAN connection of the digital camera 100 of the present embodiment.

<Reconnection operation of wireless LAN connection of digital camera 100>
Next, the operation of the digital camera 100 when reconnecting the wireless LAN disconnected by the process of FIG.

  FIG. 6B is a flowchart showing an operation when reconnecting the wireless LAN connection of the digital camera 100 of the present embodiment. This flowchart is started in response to an instruction to turn on the digital camera 100 for some reason, such as the power button 105e or the playback button, with the digital camera 100 turned off.

  First, in step S607, the activated control unit 101 reads the connection form from the nonvolatile memory 103, and whether the previous wireless LAN connection has been established using the proximity wireless communication or the setting is input by the user's menu operation. It is determined whether it has been established. If the connection form is not recorded, it is determined that the wireless LAN connection was not established when the power was turned off. When the control unit 101 determines in step S607 that the wireless LAN connection has been established by inputting the setting through the menu operation of the user via the operation unit 105, the process proceeds to step S608.

  In step S <b> 608, the control unit 101 requests the wireless communication unit 111 for wireless LAN connection, and the wireless communication unit 111 performs wireless LAN connection with the smartphone 200.

  On the other hand, when the control unit 101 determines in step S <b> 607 that the setting has not been established by inputting the menu by the user through the operation unit 105, the process ends without passing through step S <b> 608. That is, it ends without attempting reconnection. In this case, it is determined that the wireless LAN connection has been established using close proximity wireless communication, and that it is determined that the wireless LAN connection has not been established when the power is turned off.

  The above is the description of the operation of the digital camera 100 when reconnecting the wireless LAN in the present embodiment.

  As described above, according to the present embodiment, when the power of the digital camera 100 is turned off during the wireless LAN connection, the information indicating in what procedure the current connection is established before turning off the power. Hold. This makes it possible to appropriately control whether or not to reconnect the wireless LAN when the digital camera 100 is turned on next time.

[Second Embodiment]
Next, a second embodiment will be described. Since this embodiment has many parts in common with the first embodiment, the description will focus on the parts specific to this embodiment.

  In the digital camera 100 of the present embodiment, the service executed after the wireless LAN connection differs depending on the state of the digital camera 100 when it is close to the smartphone 200.

  FIG. 7A shows a wireless LAN connection by bringing the smartphone 200 close to the proximity wireless communication unit 112 in a state where an image recorded on the recording medium 110 is not reproduced on the display unit 106 of the digital camera 100. It is a figure which shows a mode that it performs. The state where the image recorded on the recording medium 110 is not reproduced on the display unit 106 may be a state where a through image is displayed in the imaging mode, a menu screen being displayed, or the like. In this case, after the wireless LAN is connected, a service to be used is selected by operating the smartphone 200. For example, a list of images recorded on the recording medium 110 of the digital camera 100 can be displayed on the screen of the smartphone 200, and an image can be transmitted from the digital camera 100 to the smartphone 200 by an operation of the smartphone 200. In addition, the function of remotely controlling the imaging operation of the digital camera 100 from the smartphone 200 can be executed. These functions assume that the smartphone 200 is a smartphone of the user of the digital camera 100.

  On the other hand, FIG. 7B shows a wireless LAN connection by bringing the smartphone 200 close to the proximity wireless communication unit 112 while the image recorded on the recording medium 110 is being reproduced on the display unit 106 of the digital camera 100. It is a figure which shows a mode that it performs. The state in which the image recorded on the recording medium 110 is being reproduced on the display unit 106 is, for example, a reproduction mode. In this case, after the wireless LAN is connected, a function of selecting an image recorded on the recording medium 110 including an image being played back by operating the digital camera 100 and transmitting it to the smartphone 200 is executed. In the case of FIG. 7B, the image recorded on the recording medium 110 of the digital camera 100 cannot be viewed from the smartphone 200 as in the case of FIG. This functional restriction assumes a case where the smartphone 200 is not a smartphone of the user of the digital camera 100 (a case of another person's smartphone).

  Now, when connecting with another person's smart phone like FIG.7 (b), it is possible that it is a temporary connection. That is, it is considered that there is no need to reconnect once the image being reproduced has been transmitted. In addition, since it is a temporary connection, it may be possible that another person's smartphone is not already in the vicinity when reconnecting.

  On the other hand, when connecting to his / her smartphone as shown in FIG. 7A, it is unlikely that the camera and the smartphone are separated when reconnecting. In addition, when connecting to his / her smartphone, it is considered that there are many scenes where the user wants to maintain the connection continuously, compared to connecting to his / her smartphone.

  Therefore, the digital camera 100 according to the present embodiment is configured so that, even when the wireless LAN connection is established using proximity wireless communication, depending on the state of the digital camera 100 when close to the smartphone 200, when the power is turned on. Appropriately control whether or not to reconnect.

<Reconnection procedure of wireless LAN communication established by proximity wireless communication in a state other than the playback mode>
FIG. 8 shows a procedure for reconnecting after the wireless LAN connection established by the proximity to the smartphone 200 is disconnected in a state where no image is reproduced on the display unit 106 of the digital camera 100 in the present embodiment. It is a sequence diagram.

  First, the user brings the smartphone 200 and the proximity wireless communication unit 112 of the digital camera 100 close to each other in a state where an image is not reproduced on the display unit 106 (a state other than the reproduction mode here) (P801). As a result, NFC communication is performed between the digital camera 100 and the smartphone 200, and communication parameters used for wireless LAN connection are shared (P802).

  In addition, the close proximity wireless transfer unit 112 notifies the control unit 101 that there has been NFC communication (P803). In response to this, the control unit 101 reads the communication parameter from the close proximity wireless communication unit 112 and requests the wireless communication unit 111 to start a wireless LAN connection using the read communication parameter (P804).

  In response to this request, the wireless communication unit 111 activates the AP function, starts beacon transmission, and generates a network.

  On the other hand, the smartphone 200 joins the network of the digital camera 100 using the communication parameters acquired in P802, thereby establishing a wireless LAN connection between the digital camera 100 and the smartphone 200 (P805). When the wireless LAN connection with the smartphone 200 is completed, the wireless communication unit 111 notifies the control unit 101 of the completion of the wireless LAN connection (P806).

  Receiving this notification, the control unit 101 writes wireless LAN connection information with the smartphone 200 in the nonvolatile memory 103 as a communication history (P807). The connection information notified from the control unit 101 is stored in the nonvolatile memory (P808). The wireless LAN connection process between the digital camera 100 and the smartphone 200 is thus completed.

  Here, for example, consider a case where the power-off process of the digital camera 100 is started by the user pressing the power button 105e. In this case, a trigger for turning off the camera power is issued from the operation unit 105 to the control unit 101 (P809).

  Receiving this, the control unit 101 writes information on the connection form in the nonvolatile memory 103 before turning off the power (P810). Thereby, information indicating that the wireless LAN connection at the time of disconnection is a connection established by bringing the smartphone 200 and the close proximity wireless communication unit 112 close to each other in a state other than the playback mode is recorded in the nonvolatile memory 103 (P811). ).

  Thereafter, the control unit 101 requests the wireless communication unit 111 to disconnect the wireless LAN connection (P812). Upon receiving the wireless LAN disconnect request, the wireless communication unit 111 disconnects the wireless LAN connection with the smartphone 200 (P813).

  When the disconnection process is completed, the wireless communication unit 111 notifies the control unit 101 of the completion of disconnection of the wireless LAN (P814). Upon receiving the wireless LAN disconnection completion notification, the control unit 101 stops the power supply to each unit constituting the digital camera 100 described with reference to FIG. 1 (P815). The power OFF process of the digital camera 100 is completed as described above.

  Further, consider that the user turns on the power again.

  In this case, the user presses the power button 105e again. As a result, an instruction to turn on the camera power is input to the control unit 101 (P816). Upon receiving an instruction to turn on the camera power, the control unit 101 starts power supply to each unit constituting the digital camera 100 described with reference to FIG. 1 (P817). At this time, the control unit 101 reads the connection form from the nonvolatile memory 103 (P818).

  Then, the control unit 101 confirms whether or not the read connection information indicates that the wireless LAN connection at the time when the power-off instruction is received is a connection established by using the close proximity wireless communication unit 112. . Further, if it is determined that the wireless LAN connection is a connection established by using the close proximity wireless communication unit 112, the wireless LAN connection when the power-off instruction is received is that the digital camera 100 is not in the playback mode. Determine whether the connection is established in the state.

  Here, it is confirmed that the wireless LAN connection when receiving the power-off instruction is a connection established when the digital camera 100 is close to the smartphone 200 in a state where the digital camera 100 is not in the playback mode. Judge that it should be connected. Therefore, the control unit 101 reads connection information from the nonvolatile memory 103 (P820). Then, the control unit 101 requests the wireless communication unit 111 to start a wireless LAN connection using the read connection information (P821). In response to the request from the control unit 101, the wireless communication unit 111 performs wireless LAN connection again with the smartphone 200 based on the connection information (P822). When the wireless LAN connection process is completed, the wireless communication unit 111 notifies the control unit 101 that the wireless LAN connection with the smartphone 200 has been completed (P823). This completes the wireless LAN reconnection process between the digital camera 100 and the smartphone 200.

<Reconnection procedure of wireless LAN communication established by proximity wireless communication in playback mode>
FIG. 9 shows a procedure for reconnecting after the wireless LAN connection established by the proximity to the smartphone 200 is disconnected while an image is being reproduced on the display unit 106 of the digital camera 100 in the present embodiment. It is a sequence diagram.

  First, the user brings the smartphone 200 and the proximity wireless communication unit 112 of the digital camera 100 close to each other in a state where an image is reproduced on the display unit 106 (reproduction mode here) (P901). As a result, NFC communication is performed between the digital camera 100 and the smartphone 200, and communication parameters used for wireless LAN connection are shared (P902).

  Further, the close proximity wireless transfer unit 112 notifies the control unit 101 that there is NFC communication (P903). In response to this, the control unit 101 reads out communication parameters from the close proximity wireless communication unit 112, and requests the wireless communication unit 111 to start wireless LAN connection using the read communication parameters (P904).

  In response to this request, the wireless communication unit 111 activates the AP function, starts beacon transmission, and generates a network.

  On the other hand, the smartphone 200 joins the network of the digital camera 100 using the communication parameters acquired in P802, thereby establishing a wireless LAN connection between the digital camera 100 and the smartphone 200 (P905). When the wireless LAN connection with the smartphone 200 is completed, the wireless communication unit 111 notifies the control unit 101 of the completion of the wireless LAN connection (P906).

  Upon receiving this notification, the control unit 101 writes the wireless LAN connection information with the smartphone 200 in the nonvolatile memory 103 as a communication history (P907). The connection information notified from the control unit 101 is stored in the nonvolatile memory (P908). The wireless LAN connection process between the digital camera 100 and the smartphone 200 is thus completed.

  After the digital camera 100 establishes a wireless LAN connection with the smartphone 200, the control unit 101 makes an acquisition request for the image being reproduced to the recording medium 110 (P909). In response to a request from the control unit 101, the recording medium 110 reads an image being reproduced (P910) and notifies the control unit 101 (P911). When the control unit 101 obtains a reproduced image from the recording medium 110, it makes an image transfer request to the wireless communication unit 111 (P912). The wireless communication unit 111 performs image transfer to the smartphone 200 (P913). When the image transfer is completed, the wireless communication unit 111 notifies the control unit 101 of the completion of the image transfer (P914).

  Here, for example, consider a case where the power-off process of the digital camera 100 is started by the user pressing the power button 105e. In this case, a trigger for turning off the camera power is issued from the operation unit 105 to the control unit 101 (P915).

  Receiving this, the control unit 101 writes the connection form in the nonvolatile memory 103 before turning off the power (P916). Here, information indicating that the current wireless LAN connection is a connection established by bringing the smartphone 200 and the close proximity wireless communication unit 112 close to each other while an image is being reproduced on the display unit 106 is a connection form. Is written as (P917).

  Thereafter, the control unit 101 requests the wireless communication unit 111 to disconnect the wireless LAN (P918). Upon receiving the wireless LAN disconnect request, the wireless communication unit 111 disconnects the wireless LAN connection with the smartphone 200 (P919).

  When the disconnection process is completed, the wireless communication unit 111 notifies the control unit 101 of the completion of disconnection of the wireless LAN (P920). After the disconnection is completed, the control unit 101 stops the power supply to each peripheral device constituting the digital camera 100 described in FIG. 1 (P921). The power OFF process of the digital camera 100 is completed as described above.

  Further, consider that the user turns on the power again.

  In this case, the user presses the power button 105e again. Thereby, an instruction to turn on the camera power is input to the control unit 101 (P922). Upon receiving an instruction to turn on the camera power, the control unit 101 starts power supply to each unit constituting the digital camera 100 described with reference to FIG. 1 (P923). At this time, the control unit 101 reads the connection form from the nonvolatile memory 103 (P924).

  Then, the control unit 101 confirms whether or not the read connection information indicates that the wireless LAN connection at the time when the power-off instruction is received is a connection established by using the close proximity wireless communication unit 112. . Further, when it is determined that the wireless LAN connection is a connection established by using the close proximity wireless communication unit 112, the wireless LAN connection when the power-off instruction is received indicates that the digital camera 100 is in the playback mode. Determine whether the connection is established in the state.

  Here, it is confirmed that the wireless LAN connection when receiving the power-off instruction is a connection established when the digital camera 100 is close to the smartphone 200 in the playback mode, and the control unit 101 Judge that it should not be connected. Therefore, the control unit 101 ends this sequence without attempting to re-establish a wireless LAN connection with the smartphone 200.

<Disconnecting Wireless LAN Connection of Digital Camera 100>
FIG. 10A is a flowchart showing an operation when the wireless LAN connection of the digital camera 100 of this embodiment is disconnected. This flowchart starts when the digital camera 100 is powered on.

  In steps S1001 to S1002, the same processing as steps S601 to S602 in FIG.

  In step S <b> 1003, the control unit 101 stores the wireless LAN connection mode with the smartphone 200 in the nonvolatile memory 103. Here, information indicating whether the currently connected wireless LAN communication has been established using proximity wireless communication or has been established by inputting a setting through a menu operation of the user is stored. Furthermore, information indicating whether the currently connected wireless LAN communication is started when the camera state is in the playback mode or not when in the playback mode is also stored.

  In step S1004 and subsequent steps, processing similar to that in step S604 and subsequent steps in FIG.

  The above is the description of the operation when disconnecting the wireless LAN connection of the digital camera 100 of the present embodiment.

<Reconnection operation of wireless LAN connection of digital camera 100>
Next, the operation of the digital camera 100 when reconnecting the disconnected wireless LAN will be described.

  FIG. 10B is a flowchart showing an operation when the wireless LAN connection of the digital camera 100 of this embodiment is reconnected. This flowchart is started in response to an instruction to turn on the digital camera 100 for some reason, such as the power button 105e or the playback button, with the digital camera 100 turned off.

  In step S1007, processing similar to that in step S607 of FIG. 6B is executed.

  If the control unit 101 determines in step S1007 that the wireless LAN connection is not established by the operation unit 105, the process proceeds to step S1008.

  In step S <b> 1008, the control unit 101 determines whether the wireless LAN connection when receiving a power-off instruction is a connection established when the digital camera 100 is in proximity to the smartphone 200 in the playback mode. To do.

  Here, when the control unit 101 determines that the wireless LAN connection when receiving the power-off instruction is a connection established when the digital camera 100 is in proximity to the smartphone 200 in the playback mode, Advances to step S1009.

  In step S1009, processing similar to that in step S608 in FIG. 6B is executed, and reconnection of the wireless LAN is attempted.

  On the other hand, if the control unit 101 determines in step S1008 that the wireless LAN connection at the time when the power-off instruction is received is not a connection established when the digital camera 100 is in the playback mode, the process proceeds to step S1009. The process ends. That is, it ends without attempting reconnection.

  The above is the description of the operation of the digital camera 100 when reconnecting the wireless LAN in the present embodiment.

  As described above, according to the present embodiment, when a wireless LAN is established by approaching, information regarding the state of the digital camera 100 at the time of proximity is held. This makes it possible to appropriately control whether or not to reconnect the wireless LAN when the digital camera 100 is turned on next time.

[Other Embodiments]
In the above-described embodiment, NFC has been described as an example of close proximity wireless communication. In addition to this, a short-range wireless communication unit may be provided. For example, as shown in FIG. 11, in addition to the proximity wireless communication unit 112, a short-range wireless communication unit 113 is provided. The short-range wireless communication unit 113 includes, for example, an antenna for wireless communication and a modulation / demodulation circuit and a communication controller for processing a wireless signal. The short-range wireless communication unit 113 outputs a modulated wireless signal from an antenna, and demodulates the wireless signal received by the antenna, thereby short-range wireless communication in accordance with the IEEE 802.15 standard (so-called Bluetooth (registered trademark)). To realize. In this embodiment, Bluetooth (registered trademark) communication employs Bluetooth (registered trademark) Low Energy version 4.0, which has low power consumption. This Bluetooth (registered trademark) Low Energy communication has a wider communication range than NFC. Further, Bluetooth (registered trademark) Low Energy communication has a lower communication speed than wireless LAN communication. On the other hand, Bluetooth (registered trademark) Low Energy communication consumes less power than wireless LAN communication. Therefore, for example, it is used assuming that the camera user's mobile phone and the camera are always connected. In this case, it is possible to send an instruction to remotely control the other device or shift to a wireless LAN connection by an operation from either device without being brought close to each other.

  Note that Bluetooth (registered trademark) Low Energy and wireless LAN are the same 2.4 GHz band communication standard, and therefore, when used at the same time, communication may be hindered due to radio wave interference. Therefore, Bluetooth (registered trademark) Low Energy and wireless LAN are used exclusively.

  Therefore, during the wireless LAN connection, Bluetooth (registered trademark) Low Energy communication is turned off. Also, Bluetooth (registered trademark) Low Energy communication is turned off when the wireless LAN is reconnected when the power is turned on. On the other hand, when wireless LAN reconnection is not performed, Bluetooth (registered trademark) Low Energy communication is automatically turned ON, and periodic advertisement transmission is started. Note that, as described above, Bluetooth (registered trademark) Low Energy communication has low power consumption, and therefore the short-range wireless communication unit 113 can perform communication even when the control unit of the digital camera 100 is not energized. Therefore, when the digital camera 100 is turned off during communication with the smartphone 200, the short-range wireless communication unit 113 is set in conjunction with disconnecting the wireless LAN communication and disabling the wireless communication unit 111. Enable to start sending advertisements. For example, as one of the cases where the power is turned off due to auto power off, the user may be mainly using the smartphone 200 and not operating the camera. Even in such a case, since the short-range wireless communication unit 113 becomes effective, the smartphone 200 can communicate with Bluetooth (registered trademark) Low Energy. Therefore, the user operating the smartphone 200 can turn on the camera remotely from the smartphone 200 without operating the camera, which is more convenient.

  In the above-described embodiment, the case where the camera is turned off with the power button has been described as an example. However, the present invention is not limited to this. For example, the same processing may be performed in the case of automatic power OFF due to detection of cover open at the time of card replacement and automatic power OFF by detection of cover open at the time of battery replacement. Alternatively, the same processing may be performed even when the power is turned off by an auto power off function that automatically detects that there is no user operation for a predetermined time and automatically turns off the power.

  Note that, compared with power OFF due to these factors, power OFF due to the operation of the power button can be interpreted as not an erroneous operation but a user's explicit instruction to turn off the power. Therefore, for example, before the power is turned off, what factors cause the power to be turned off are stored. When the power is turned on again, depending on the cause of the power being turned off, It may be determined whether or not to execute the processing of FIG. 6B or FIG. For example, when the power is turned off by the auto power off function, the processing of FIG. 6B or FIG. 10B is executed at the next power on, and when the power is turned off by operating the power button, The processing of FIG. 6B and FIG. 10B may not be executed when the power is turned on. In other words, when the power is turned off by the operation of the power button, the reconnection is not performed without determining whether the communication for turning off the power is established by the proximity wireless communication or the menu operation.

  Alternatively, an operation error may be considered when the power is turned off by operating the power button. On the other hand, when the power is turned off by auto power off, it is considered that the user does not intend to operate any more. Therefore, when the power is turned off by the operation of the power button, the processing of FIG. 6B or FIG. 10B is executed when the next power is turned on, and when the power is turned off by the auto power off, the next power is turned on. The processing of FIG. 6B and FIG. 10B may not be executed. In other words, when the power is turned off due to auto power off, reconnection is not performed without determining whether the communication for turning off the power is established by proximity wireless communication or by menu operation.

  In the second embodiment described above, an example is given in which whether to reconnect the wireless LAN is switched according to the state of the digital camera 100 at the time of proximity when establishing the previous wireless LAN communication. Said. In this case, whether or not to reconnect the wireless LAN may be switched according to the wireless LAN communication mode at the time of disconnection instead of the state of the digital camera 100 at the time of proximity. In this case, the communication mode of the wireless LAN is a mode corresponding to the mode of the digital camera at the time of proximity. For example, when wireless LAN communication is established by the digital camera 100 approaching in the playback mode, the digital camera 100 operates in a mode in which an image is transmitted to the smartphone 200 by an operation on the digital camera 100. In addition, when the wireless LAN communication is established by the digital camera 100 approaching in a mode other than the playback mode, an operation to the smartphone 200 operates in a mode in which an image is transmitted from the digital camera 100 to the smartphone 200. To do.

  When the power is turned off, information indicating that the wireless LAN communication mode is a mode in which an image is transmitted to the smartphone 200 by an operation on the digital camera 100 is held. Refer to it to avoid reconnection. In addition, when the power is turned off, information indicating that the wireless LAN communication mode is a mode in which an image is transmitted from the digital camera 100 to the smartphone 200 by an operation on the smartphone 200 is retained. Refer to that information and reconnect. In this case, after reconnection, if the mode is automatically changed to the previous wireless LAN disconnection mode, usability is further improved.

  In addition, there is a case where the power supply is erroneously turned off again before the reconnection process is started and the reconnection is established. In this case, the power is turned off without changing the connection information already stored.

  The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a recording medium, and one or more processors in the computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

Claims (13)

A communication device,
A first communication means for communicating with an external device using a first communication method;
A second communication method that communicates with the external device using a second communication method different from the first communication method, and that shares communication parameters used to establish communication with the first communication method with the external device. Communication means;
Receiving means for receiving a user operation for communicating with the external device in the first communication method;
Control to establish communication with the external device in the first communication method according to either the user operation received by the receiving unit or the communication parameter sharing by the second communication unit. Control means, and
When the communication device is turned on after the communication device is turned off during communication with the external device established according to the user's operation, the control means automatically Control to communicate with the external device again in the first communication method,
When the power of the communication device is turned on after the power of the communication device is turned off during communication with the external device established according to the sharing of the communication parameter by the second communication means, The control means does not control to automatically communicate with the external device again by the first communication method. The communication device operates in any one of a plurality of modes including a reproduction mode for reproducing an image recorded on a recording medium,
After the communication device is turned off during communication with the external device established by the second communication means using the communication parameter shared during the mode other than the playback mode, the communication device When the power is turned on, the control means may communicate with the external device when the power is turned off, even if the communication established by the second communication means according to the sharing of the communication parameters. , Control to automatically communicate with the external device again in the first communication method,
After the communication device is turned off during communication with the external device established by the second communication means using the communication parameter shared during the playback mode, the communication device is powered off. 2. The communication apparatus according to claim 1, wherein, when turned on, the control unit automatically controls to not communicate with the external apparatus again by the first communication method. A first communication mode in which an image recorded on the recording medium is transmitted to the external device by an operation on the communication device, and an image recorded on the recording medium is transmitted to the external device by an operation on the external device. A second communication mode, and
When the communication device is turned on after the communication device is turned off during communication with the external device in the first communication mode, the control means communicates with the external device. Even in the communication established according to the sharing of the communication parameters by the second communication means, control to automatically communicate with the external device again in the first communication method,
When the communication device is turned on after the communication device is turned off during communication with the external device in the second communication mode, the control means automatically performs the first communication. The communication apparatus according to claim 1, wherein control is performed so as not to communicate with the external apparatus again using a method. The control means determines whether the communication with the external device when the power is turned off is communication established according to sharing of the communication parameter by the second communication means, or according to an operation of the user Determine if the communication is established,
When the communication device is turned on after the communication device is turned off during communication with the external device in the second communication mode, the control means Without determining whether the communication with the external device is communication established according to sharing of the communication parameter by the second communication means or communication established according to the operation of the user, 4. The communication apparatus according to claim 3, wherein control is performed so as not to automatically communicate with the external apparatus again using the first communication method. The communication device further includes a power button for receiving instructions for turning on and off the power of the communication device,
The control unit according to any one of claims 1 to 4, further comprising an auto power-off function for controlling to automatically turn off the power of the communication device when a user operation is not accepted for a predetermined time. The communication apparatus of any one of Claims. The communication device further includes a power button for receiving instructions for turning on and off the power of the communication device,
The control means further has an auto power off function for controlling to automatically turn off the power of the communication device when a user operation is not accepted for a predetermined time,
When the power of the communication device is turned on after the power of the communication device is turned off by operating the power button during communication with the external device, the control means The communication with the external device is not controlled to automatically communicate with the external device by the first communication method even if the communication with the external device is established according to the operation of the user. 5. The communication device according to any one of 4.   When the communication device is turned on after the communication device is turned off by the auto power off function during communication with the external device, the control means Even if communication with the external device is communication established according to sharing of the communication parameter by the second communication means, control is performed so as to automatically communicate with the external device using the first communication method. The communication apparatus according to claim 6. The communication device further includes a power button for receiving instructions for turning on and off the power of the communication device,
The control means further has an auto power off function for controlling to automatically turn off the power of the communication device when a user operation is not accepted for a predetermined time,
When the power of the communication device is turned on after the power of the communication device is turned off by operating the power button during communication with the external device, the control means Even if communication with the external device is communication established according to sharing of the communication parameter by the second communication means, control is performed so as to automatically communicate with the external device using the first communication method. The communication device according to any one of claims 1 to 4, wherein   When the communication device is turned on after the communication device is turned off by the auto power off function during communication with the external device, the external device when the power is turned off 9. The communication device according to claim 8, wherein the communication device is not automatically controlled to communicate with the external device using the first communication method even if the communication is established in response to an operation of the user. A communication device,
A first communication means for communicating with an external device using a first communication method;
A second communication means for communicating with the external device by a second communication method that consumes less power than the first communication method;
A power button for accepting instructions to turn on and off the communication device;
Control means having an auto power-off function for controlling to automatically turn off the power of the communication device when a user operation is not accepted for a predetermined time,
When the communication device is turned on after the communication device is turned off by the auto power off function during communication with the external device, the control means automatically performs the first communication. Control to communicate with the external device in a manner,
When the communication device is turned on after the communication device is turned off by the operation of the power button during communication with the external device, the control means automatically performs the first communication. Without controlling to communicate with the external device
The communication apparatus, wherein the second communication means is enabled when the communication apparatus is powered off. First communication means for communicating with the external device by the first communication method, communication with the external device by a second communication method different from the first communication method, and communication by the first communication method A communication device control method comprising: a second communication means for sharing communication parameters used for establishing with the external device,
An accepting step of accepting a user operation for communicating with the external device in the first communication method;
Control to establish communication with the external device in the first communication method according to either the user operation received in the receiving step or the sharing of the communication parameter by the second communication means Control steps;
When the communication device is turned on after the communication device is turned off during communication with the external device established according to the user's operation, the first communication method is automatically performed. Control to communicate with the external device again, and after the communication device is turned off during communication with the external device established according to the sharing of the communication parameters by the second communication means, A control method for a communication device, comprising: a step of not automatically controlling communication with the external device again by the first communication method when the power of the communication device is turned on. A first communication means for communicating with an external device in a first communication mode; a second communication means for communicating with the external device in a second communication mode with lower power consumption than the first communication method; A communication device control method having a power button for accepting on and off instructions,
A step of controlling an auto power off function for controlling to automatically turn off the power of the communication device when a user operation is not accepted for a predetermined time; and
When the communication device is turned on after the communication device is turned off by the auto power off function during communication with the external device, the external device is automatically used in the first communication method. When the power of the communication device is turned on after the power of the communication device is turned off by the operation of the power button during the communication with the external device. Not controlling to communicate with the external device in the communication method of
And enabling the second communication means when the communication device is powered off.   The computer-readable program for functioning a computer as each means of the communication apparatus of any one of Claims 1 thru | or 10.

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