JP5095337B2 - CONTENT DISTRIBUTION DEVICE, CONTENT DISTRIBUTION METHOD, CONTROL PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM CONTAINING THE PROGRAM - Google Patents

Description

  The present invention relates to a content distribution apparatus capable of distributing content via a communication network, a content distribution method, a control program, and a computer-readable recording medium on which the program is recorded.

  The DLNA (Digital Living Network Alliance) defines guidelines for sharing digital content such as video, photos, and music over a network. In DLNA, a device that reproduces content is called a DMP (Digital Media Player), and a device that publishes and distributes stored content is called a DMS (Digital Media Server).

  In order to realize content sharing in a local network such as a home network, DLNA is a mechanism for searching for a DMS existing on the network, a mechanism for searching for content between DMP and DMS, Defines a mechanism for distributing content to DMP. In general, a wired LAN (Local Area Network) or a wireless LAN is used to connect each device to the network.

  Viewing video content stored on a home server having a DMS function from a TV or PC (Personal Computer) having a DMP function has already been put into practical use. In the future, if a DMS function is implemented in a mobile phone, it will be possible to view photos and video files stored in the mobile phone on a home TV or PC by using the DLNA mechanism.

  Here, in order to view content such as photos and video files stored in a mobile phone on a TV or PC, the content is stored on an SD (Secure Digital) memory card or the like, and the content is stored on the TV or PC. It was necessary to insert it into the SD slot on the side. On the other hand, when the DMS function is installed in the mobile phone as described above, since these operations are not necessary, the convenience is expected to be improved.

  However, when the DMS function is mounted on a battery-powered terminal such as a mobile phone, there is a concern about the influence on the power consumption by always operating the DMS function. That is, in a state where the DMS function is enabled, the mobile phone always waits for a request on the DMP side, and when receiving a content distribution request or the like from the DMP device, it is necessary to return a response at any time. In addition, the mobile phone needs to notify the network of information (server information) of the mobile phone as the DMS at regular time intervals.

  As described above, the power consumption of the mobile phone increases by implementing the DMS function. The DMS function is a function that is used without the user of the mobile phone being aware of it. Therefore, the battery may be consumed without the user's knowledge.

  The following patent document 1 is mentioned as a prior art for coping with the consumption of the battery of a portable terminal. The portable digital content server described in Patent Document 1 below is driven by battery power and can play back digital content. Further, in response to a data transmission request from the network player, the requested digital content data can be stream-distributed to the network player. That is, the portable digital content server described in Patent Document 1 is a DMS device capable of reproducing digital content.

Further, the portable digital content server described in Patent Document 1 sets the minimum remaining power level at which digital content can be played back to the first predetermined value, and sets a value larger than the first predetermined value to the second predetermined value. It is set. The portable digital content server can be connected to the network only when the remaining battery power is equal to or greater than the second predetermined value. According to the above configuration, since the server connection is prohibited when the remaining battery level falls below the threshold, it is possible to prevent the single content playback function from being disabled.
JP 2007-95032 A (published April 12, 2007) JP 2003-283500 A (released on October 3, 2003)

  However, in the technique disclosed in Patent Document 1, power saving control is not performed until the remaining battery level falls below the threshold value, and thus it is not possible to stop the decrease in the remaining battery level. Moreover, since the DMS function cannot be used once it falls below the threshold value, convenience as a DMS device is impaired.

  A mobile terminal represented by a mobile phone is a device that is assumed to be used by moving. Here, in recent years, with the rapid spread of wireless LAN, wireless LAN access points such as hot spots have been installed in various places.

  Therefore, when the portable terminal is taken out, it is conceivable that the mobile terminal is connected to the wireless LAN network via various wireless LAN access points regardless of whether or not the user is conscious. Here, when the DMS function is valid, private content data is disclosed to other users using the same hot spot, which is a problem in terms of security.

  Further, the above Patent Document 2 discloses a technique for saving power of devices connected to a network. Specifically, the power control method described in Patent Document 2 aims to perform power control of a network device using a power activation packet by energizing only the network device when the power of the network device is off. And a list of network devices for that purpose.

  According to the power control method disclosed in Patent Document 2, normally, a network device is turned off, and the power is turned on using a power activation packet when necessary. Thereby, since the power supply is not always turned on, power saving can be realized.

  However, in the technique described in Patent Document 2, it is necessary to additionally implement control by the power-on activation packet not only on the server side device but also on the client side device. In addition, the technique described in Patent Document 2 cannot solve the problem of publishing content to a communication network not intended by the user.

  The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a content distribution device, a content distribution method, a control program, and the like that do not release content to a communication network that is not intended by the user. And providing a computer-readable recording medium in which the program is recorded.

  In order to solve the above-described problem, a content distribution apparatus according to the present invention connects a communication unit to communicate with any one of a plurality of communication networks, and distributes content using the communication unit. A content distribution apparatus comprising: a distribution processing unit for performing the distribution processing based on an identification result of the connection destination identification unit and a connection destination identification unit for identifying a communication network to which the communication unit is connected. And communication control means for enabling or disabling the means.

  In addition, in order to solve the above problems, a content distribution method according to the present invention connects a communication unit to communicate with any one of a plurality of communication networks, and uses the communication unit to transmit content. A content distribution method of a content distribution apparatus comprising a distribution processing means for performing distribution, comprising: a connection destination identifying step for identifying a communication network to which the communication unit is connected; and an identification result of the connection destination identifying means. And a communication control step for enabling or disabling the distribution processing means.

  According to said structure, the said delivery process means becomes effective or invalid according to the communication network which the content delivery apparatus has connected via the communication part. Therefore, it is possible to prevent the content from being distributed to a communication network that is not intended by the user of the content distribution apparatus, and it is possible to distribute the content only to the communication network that may distribute the content. become.

  Further, according to the above configuration, even if the user does not perform any operation, the distribution processing means is automatically enabled or disabled according to the communication network of the connection destination, so that the convenience for the user is high. Furthermore, according to the above configuration, when connected to a communication network not intended by the user, the distribution processing unit is not enabled, so that the power consumption of the content distribution apparatus can be kept low.

  The method for identifying the communication network is not particularly limited. For example, the SSID (Service Set Identifier), BSSID (Basic Service Set Identifier), MAC (Media Access Control) address, etc. of the access point connected to the communication network are used. A communication network can be identified.

  The communication network can also be identified using connection setting information used for connecting to the communication network. For example, the communication network can be identified by using at least one of an address setting such as an IP (Internet Protocol) address used for connecting to the communication network, a DNS (Domain Name System) setting, a channel setting, and a security setting. can do.

  In addition, the content distribution device includes a storage unit that stores connection setting information for connecting to each of the plurality of communication networks and distribution permission / inhibition information indicating whether or not the contents can be distributed to each of the plurality of communication networks. The connection destination identifying means identifies a communication network to which the communication section is connected based on the connection setting information used when the communication section is connected, and the communication control means is configured to identify the connection destination. It is preferable to enable or disable the distribution processing unit based on the distribution availability information associated with the communication network identified by the unit.

  According to the above configuration, the connection setting information is stored in the storage unit, and the connection to each of the plurality of communication networks is performed using the connection setting information. Therefore, any connection setting information is used for connection. The connected communication network can be identified by

  Moreover, according to said structure, the delivery permission information is matched with each of several communication networks. Thereby, the communication control means can determine whether to enable or disable the distribution processing means based on the distribution availability information.

  Therefore, a communication network in which the user does not want to distribute content is associated with distribution availability information indicating that the content is not distributed, and the communication network is determined that the user may distribute the content. By associating with the distribution availability information indicating that the content can be distributed, it is possible to prevent the content from being distributed to a communication network not intended by the user.

  The content distribution apparatus includes an input unit that acquires a predetermined input operation, and the distribution availability information includes information indicating that the content can be distributed on the condition of the predetermined input operation. In the case where the distribution control information associated with the communication network identified by the connection destination identification unit indicates that the content can be distributed on the condition of the predetermined input operation, It is preferable to enable the distribution processing means when the display device displays availability inquiry information for inquiring whether or not the content can be distributed to the user and confirms the predetermined input operation to the input unit.

  According to the above configuration, if the distribution availability information associated with the connected communication network indicates that the content can be distributed on the condition of a predetermined input operation, the availability inquiry information is displayed on the display device. Is displayed. The user can select whether or not content distribution is permitted by displaying the availability inquiry information. That is, when the availability inquiry information is displayed, the user can enable the delivery processing means and perform the delivery of the content by performing a predetermined input operation to the input unit.

  Therefore, it is possible to control whether or not the content can be distributed reflecting the user's intention.

  The communication means preferably enables or disables the distribution processing means according to a security setting of a communication network to which the communication unit is connected.

  According to said structure, it becomes possible to deliver a content only to the communication network of the security setting designated beforehand. Therefore, it is possible to prevent the content from being disclosed to a communication network having a security problem such as a communication network with weak security settings or a communication network without security settings.

  Further, the content distribution apparatus includes a current position information acquisition unit that acquires current position information indicating a current position, and the connection destination identification unit is a communication network to which the communication unit is connected based on the current position information. Is preferably identified.

  According to said structure, it becomes possible to deliver a content only in the place designated beforehand. Therefore, it is possible to prevent the content from being disclosed at a place not intended by the user of the content distribution apparatus.

  In addition, the content distribution apparatus includes a communication state information acquisition unit that acquires communication state information that is an index indicating a communication state of a communication network to which the communication unit is connected, and the communication control unit includes: When the communication state information indicating that the communication state of the connected communication network is worse than a predetermined state is acquired, it is preferable to invalidate the distribution processing unit.

  According to the above configuration, when the communication state of the connected communication network is worse than a predetermined state, content distribution is not performed. Therefore, it is possible to prevent the connection from being interrupted during the distribution of the content due to the poor communication state or the content transfer time from becoming extremely long.

  The communication control means preferably disables the distribution processing means when the content distribution request is not confirmed for a certain period of time after enabling the distribution processing means.

  According to the above configuration, the distribution processing unit is invalidated when there is no content distribution request for a certain period of time. Therefore, power consumption of the content distribution apparatus can be suppressed.

  The communication control means preferably disables the distribution processing means when a predetermined application is operating.

  In recent years, electronic devices have become more and more multifunctional, and many devices having various additional functions in addition to the original functions of the devices are on the market. In the content distribution apparatus of the present invention, various other functions can be installed in addition to the content distribution function which is the original function. However, in the case where a plurality of functions are installed, there is a possibility that processing delay occurs due to the processing between the functions being batting. In particular, a content distribution apparatus often distributes a moving image file or the like having a relatively large data capacity, so that the influence on other functions is great.

  According to the above configuration, content distribution is not performed during operation of a predetermined application. Therefore, it is possible to prevent the occurrence of a problem that the operation of the application is hindered by the content distribution processing and the processing is slowed down.

  The content distribution apparatus may be realized by a computer. In this case, a program for causing the content distribution apparatus to be realized by a computer by causing the computer to operate as each of the above-described means, and the program recorded there Computer-readable recording media are also within the scope of the present invention.

  As described above, the content distribution apparatus according to the present invention enables the distribution processing unit based on the identification result of the connection destination identification unit that identifies the communication network to which the communication unit is connected and the connection destination identification unit. Or it is the structure provided with the communication control means to invalidate.

  In addition, as described above, the content distribution method according to the present invention is based on the connection destination identifying step for identifying the communication network to which the communication unit is connected, and the distribution processing means based on the identification result of the connection destination identifying means. And a communication control step for enabling or disabling the communication.

  Therefore, it is possible to prevent the content from being distributed to a communication network that is not intended by the user, and it is possible to distribute the content only to a communication network where the content may be distributed. Play. Further, when connected to a communication network not intended by the user, the distribution processing means is not enabled, so that the power consumption of the content distribution apparatus can be kept low.

[Embodiment 1]
An embodiment of the present invention will be described below with reference to FIGS.

[Configuration of mobile phone]
First, the configuration of the mobile phone according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing a main configuration of a mobile phone (content distribution device) 1. As shown in the figure, a cellular phone 1 includes a WLAN module (communication unit) 2, a WLAN data transmission / reception unit 3, a DMS protocol processing unit (distribution processing means) 4, a WLAN status acquisition unit 5, a WLAN connection unit 6, and a display unit (display). Device) 7, input unit 8, mobile phone network connection I / F 9, control unit 10, camera 13, auxiliary storage unit 14, main storage unit 18, and position information acquisition unit (current position information acquisition unit) 19. .

  The WLAN module 2 performs various processes necessary for the mobile phone 1 to connect to the wireless LAN network for communication. Specifically, the WLAN module 2 performs wireless modulation / demodulation, baseband processing, and the like. The WLAN data transmission / reception unit 3 controls data transmission / reception between the mobile phone 1 and the wireless LAN network.

  The DMS protocol processing unit 4 performs various processes necessary for the mobile phone 1 to function as a DMS device. Specifically, the DMS protocol processing unit 4 performs protocol processing for exchanging messages with a terminal having a DMP function in accordance with the DLNA guidelines.

  The WLAN state acquisition unit 5 acquires the state of the connection destination network of the WLAN module 2. Specifically, the WLAN state acquisition unit 5 acquires a state change event such as a wireless LAN reception level (RSSI, Received Signal Strength Indicator), connection, or disconnection.

  The WLAN connection unit 6 performs control for disconnecting from the wireless LAN network and disconnecting from the wireless LAN network. Specifically, the WLAN connection unit 6 causes the WLAN module 2 to execute connection to the designated wireless LAN network by designating a connection destination and transmitting a connection request. Also, the connection to the wireless LAN network is disconnected by transmitting a connection disconnection request to the WLAN module 2.

  The display unit 7 is a device that displays still images, moving images, text data, and the like in accordance with instructions from the control unit 10. As the display unit 7, for example, an LC (liquid Crystal) display device, an EL (Electro Luminescence) display device, or the like can be suitably applied.

  The input unit 8 is for operating the mobile phone 1, and includes a selection key for selecting an item displayed on the display unit 7, a determination key for determining the selected item, and a key for inputting numbers and characters. It is composed of input key groups including. The input unit 8 sends an input to the input key to the control unit 10 as an input signal, and the control unit 10 that receives the input signal performs an operation according to the input signal. Thereby, the mobile phone 1 performs an operation according to the user's input operation.

  The mobile phone network connection I / F 9 is an interface through which the mobile phone 1 connects to the mobile phone network for communication. That is, the cellular phone 1 can perform voice calls and packet communications via the cellular phone network connection I / F 9. The mobile phone network that is the connection destination of the mobile phone network connection I / F 9 is not particularly limited, and the configuration of the mobile phone network connection I / F 9 can be changed as appropriate in accordance with the mobile phone network of the connection destination. As the mobile phone network connection I / F 9, for example, those connected to the mobile phone network by a W-CDMA (Wideband Code Division Multiple Access) method or a CDMA2000 (Code Division Multiple Access) method can be used.

  The control unit 10 controls the overall operation of the mobile phone 1. In the present embodiment, it is assumed that the control unit 10 controls processing in each unit of the mobile phone 1 based on a program read from the auxiliary storage unit 14 to the main storage unit 18. Moreover, the control part 10 is provided with the connection destination identification part (connection destination identification means) 11 and the communication control part (communication control means) 12 like illustration. Note that the control unit 10, the connection destination identification unit 11, and the communication control unit 12 may be configured by hardware logic.

  The connection destination identification unit 11 identifies what type of network the mobile phone 1 is connected to via a wireless LAN, and sends the identification result to the communication control unit 12. Then, the communication control unit 12 controls whether or not the content can be disclosed to the network to which the mobile phone 1 is connected by wireless LAN based on the received identification result. Details of the connection destination identification unit 11 and the communication control unit 12 will be described later.

  The camera 13 is a device for taking a picture, and generates image data based on an optical signal taken into a light receiving element via a lens (not shown). Image data generated by the camera is recorded in the auxiliary storage unit 14 as necessary as still image data or moving image data.

  The auxiliary storage unit 14 is a recording device that records various data used by the mobile phone 1. As the auxiliary storage unit, for example, a known recording device such as a flash ROM (Read Only Memory) can be appropriately used. As shown in the figure, the auxiliary storage unit 14 includes a WLAN connection profile 15, a content storage area 16, and a program storage area 17.

  The WLAN connection profile 15 is data indicating a network that is a wireless LAN connection destination candidate of the mobile phone 1, that is, a connection candidate network, and various setting data (connection setting information) used when connecting to each connection candidate network, that is, Includes connection profiles. In other words, the cellular phone 1 targets only the network shown in the WLAN connection profile 15 for wireless LAN connection, and uses the connection profile included in the WLAN connection profile 15 to connect to the connection candidate network. . Details of the WLAN connection profile 15 will be described later.

  The content storage area 16 stores data to be disclosed by the DMS function such as a still image file and a moving image file. The user of the mobile phone 1 can publish the image data by using the DMS function by storing the image data captured by the camera 13 in the content storage area 16, for example.

  The program storage area 17 stores programs necessary for the mobile phone 1 to operate. That is, in the mobile phone 1, the control unit 10, the connection destination identification unit 11, and the communication control unit 12 read the program stored in the program storage area 17 into the main storage unit 18 and execute it as described above. Functions are realized.

  The main storage unit 18 functions as a working memory when information processing by the control unit 10 is performed. For example, a RAM (Random Access Memory) can be applied as the main storage unit 18.

  The position information acquisition unit 19 acquires the current position of the mobile phone 1. The position information acquisition unit 19 can be realized by, for example, a GPS (Global Positioning System).

[Configuration of WLAN connection profile]
Next, details of the WLAN connection profile 15 will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of the WLAN connection profile 15. As shown in the figure, the WLAN connection profile 15 includes an ID column 21, a profile name column 22, an SSID column 23, an IP address setting column 24, a DNS setting column 25, a channel setting column 26, a security setting column 27, and a type column 28. It is the composition which includes.

  The ID column 21 stores an ID for identifying each connection candidate network. That is, in the illustrated example, five networks from ID 1 to ID 5 are connection candidates for the mobile phone 1. The ID indicates the priority of connection. Here, it is assumed that connection is attempted in ascending order of ID numbers.

  The name of each connection candidate network is stored in the profile name column 22. This name can be appropriately set and changed by the user of the mobile phone 1 via the input unit 8.

  The SSID column 23 stores an SSID that is an identifier of an access point to each connection candidate network. The WLAN connection unit 6 tries to connect to the access point using this SSID. If the SSID used for connection matches the SSID setting contents on the access point side, it is possible to connect to the connection candidate network via the access point.

  In this embodiment, an example using an SSID will be described, but a BSSID may be used as an identifier of an access point. Since the MAC address of the access point is normally used as the BSSID, it is possible to prevent duplication of names unlike an SSID that can be set with any alphanumeric character.

  The IP address setting field 24 stores IP address settings used when connecting to a connection candidate network. When connecting to a connection candidate network whose specific IP address is stored in the IP address setting column 24, the WLAN connection unit 6 uses the stored IP address. In addition, when connecting to a connection candidate network in which a specific IP address is not stored in the IP address setting field 24, the WLAN connection unit 6 automatically acquires an IP address at the time of connection.

  The DNS setting field 25 stores the setting of the DNS server used when connecting to the connection candidate network. When connecting to a connection candidate network in which a specific DNS server address is stored in the DNS setting field 25, the WLAN connection unit 6 uses the stored DNS server address. In addition, when connecting to a connection candidate network in which a specific DNS server address is not stored in the DNS setting field 25, the WLAN connection unit 6 automatically acquires the DNS server address at the time of connection.

  The channel setting field 26 stores frequency (channel) information when connecting to an access point. When connecting to a connection candidate network whose specific channel is stored in the channel setting field 26, the WLAN connection unit 6 uses the stored channel. In addition, when connecting to a connection candidate network in which a specific channel is not stored in the channel setting field 26, the WLAN connection unit 6 attempts to connect by sequentially switching the channel.

  The security setting field 27 stores various security settings when connecting to the connection candidate network. Specifically, as shown in the figure, the security setting field 27 includes an authentication method, an encryption method, key information used for authentication and encryption, and certificate information when a certificate is used for authentication. Yes.

  For example, when connecting to the connection candidate network of ID1 in the figure, it is understood that the WPA-PSK (Wi-Fi Protected Access-Pre Shared Key) method is used as the authentication method. It can also be seen that AES (Advanced Encryption Standard) is used as the encryption method. The pre-shared key necessary for connection in this case is stored in the key information column. Thereby, the WLAN connection unit 6 can connect to the connection candidate network of ID1.

  The type column 28 stores the type (distribution availability information) of each connection candidate network. As with the profile name, the type of the mobile phone 1 can be set and changed as appropriate via the input unit 8. The mobile phone 1 determines whether or not content can be distributed according to the type of connection candidate network.

  For example, in the illustrated example, there are four types of “home”, “company”, “hot spot”, and “friend” as types, among which “home” and “friend” are content distributions. Indicates that it is possible, and otherwise indicates that content distribution is not possible. In other words, the present invention is not limited to the illustrated example, and the type column 28 only needs to store information indicating whether the content of each connection candidate network can be distributed.

  As described above, the WLAN connection profile 15 is data indicating a connection candidate network of the mobile phone 1. Also, the WLAN connection profile 15 includes a connection profile used when connecting to each connection candidate network. The WLAN connection profile 15 includes a type that is an item indicating whether or not content distribution to each connection candidate network is possible.

  Specifically, the connection candidate networks of the mobile phone 1 are five IDs 1 to 5. The five items from the SSID column 23 to the security setting column 27 are connection profiles, and the mobile phone 1 can connect to each connection candidate network by using these connection profiles. The mobile phone 1 can determine whether or not content distribution to each connection candidate network is possible by referring to the type column 28 associated with each connection candidate profile.

  Note that various setting values included in the WLAN connection profile 15 are normally set by the user through the input unit 8 after obtaining the setting value of the access point. In addition, setting values such as SSID can be automatically obtained by the mobile phone 1 scanning peripheral access points and reflected in the WLAN connection profile 15.

[Process flow]
Next, a flow of processing in which the cellular phone 1 having the above configuration is connected to a connection candidate network and content data is distributed to a DMP device having a DMP function will be described with reference to FIG. FIG. 3 is a flowchart showing an example of processing in which the mobile phone 1 connects to the connection candidate network and distributes content data to the DMP device. The process on the mobile phone 1 is shown on the left side of the figure, and the process on the DMP device is shown on the right side.

  When the control unit 10 confirms that a predetermined input operation has been performed on the input unit 8, the control unit 10 starts connection processing to the network by wireless LAN communication. Here, the control unit indicates that the process for executing the wireless LAN connection is selected by the user's input key operation from the menu screen displayed on the display unit 7 when the menu key of the input unit 8 is pressed. It is assumed that the connection process starts when 10 confirms.

[Network connection]
In connection processing to a network by wireless LAN communication, the control unit 10 first reads a connection profile whose ID column is 1 from the WLAN connection profile 15 (S1). Then, the control unit 10 requests the WLAN connection unit 6 to connect to the connection candidate network specified by the read connection profile (S2). Upon receiving this request, the WLAN connection unit 6 instructs the WLAN module 2 to start connection to the connection candidate network for which the connection request has been made.

  The WLAN module 2 uses the SSID, channel setting, and security setting included in the connection profile read out by the control unit 10 to connect to the wireless LAN access point for connection to the connection candidate network (association). Try.

  Here, when the wireless LAN connection is performed, the access point of the connection candidate network needs to exist within the wireless LAN communication range of the mobile phone 1. In other words, depending on the location where the mobile phone 1 exists, there may be a case where connection to the connection candidate network of the connection profile specified by the control unit 10 is impossible due to the problem of the distance between the mobile phone 1 and the access point.

  Therefore, the control unit 10 confirms with the WLAN connection unit 6 whether or not the wireless LAN connection has failed (S3). When it is confirmed that the connection has failed (YES in S3), the control unit 10 confirms whether there is a connection profile that has not been attempted to be connected among the connection profiles included in the WLAN connection profile 15. (S4).

  If there is no connection profile that has not been attempted to connect (NO in S4), the control unit 10 determines that there is no currently connectable connection candidate network and ends the process. On the other hand, if there is a connection profile that has not been attempted to connect (YES in S4), the control unit 10 adds 1 to the ID of the connection profile that was last attempted to connect (S5). Then, the control unit 10 returns to the process of S2 and designates a connection profile having an ID obtained by adding 1 to the ID of the connection profile last attempted to connect, and causes the WLAN connection unit 6 to make a connection request.

  As described above, the cellular phone 1 is connected to a network to which the cellular phone 1 can currently be connected from among the connection candidate networks indicated in the WLAN connection profile 15 by the control unit 10 performing the processes of S1 to S5. Can be done.

[Identification of connected network]
If it is confirmed in S3 that the wireless LAN connection is successful (NO in S3), the control unit 10 instructs the connection destination identification unit 11 to identify the connection candidate network to which the mobile phone 1 is currently connected. Let it run. First, when the connection destination identification unit 11 confirms the above instruction of the control unit 10, based on the ID of the connection profile when the connection is successful, it is determined which of the networks ID1 to 5 is the currently connected network. Check.

  Subsequently, the connection destination identification unit 11 refers to the WLAN connection profile 15 and confirms whether or not the type of the currently connected connection candidate network is “home” (S6). If the type of the currently connected connection candidate network is “home” (YES in S6), the connection destination identifying unit 11 notifies the communication control unit 12 to that effect, and the process proceeds to S10.

  On the other hand, when the type of connection candidate network currently connected is not “home” (NO in S6), the connection destination identification unit 11 determines whether the type of connection candidate network currently connected is “friend”. (S7).

  When the type of the connection candidate network currently connected is not “friend” (NO in S7), the connection destination identification unit 11 notifies the communication control unit 12 to that effect. Receiving the transmission, the communication control unit 12 determines that there is no need to distribute the content to the current connection destination, and ends the process.

  On the other hand, when the type of the currently connected connection candidate network is “friend” (YES in S7), the connection destination identifying unit 11 notifies the communication control unit 12 to that effect. Receiving the transmission, the communication control unit 12 displays information (for example, characters, pictures, icons, etc.) prompting the user to select whether or not to enable the DMS function on the display unit 7 (S8). In the present embodiment, it is assumed that a message “Do you want to enable the DMS function?” Is displayed on the display unit 7.

  The communication control unit 12 displays information prompting selection of whether or not to enable the DMS function, and then waits for a predetermined input operation by the user (S9). Here, it is assumed that the predetermined input operation is an input to an input key corresponding to a process for enabling the DMS function, or an input to an input key corresponding to a process for not enabling the DMS function. Yes.

  When the communication control unit 12 confirms the input to the input key corresponding to the process for enabling the DMS function, that is, there is a response “Yes” to the message “Do you want to enable the DMS function?”. If YES (YES in S9), the process proceeds to S10. On the other hand, when the input to the input key corresponding to the process that does not enable the DMS function is confirmed (NO in S9), the communication control unit 12 determines that it is not necessary to distribute the content to the current connection destination. To finish the process.

  As described above, when the connection destination identification unit 11 determines that the current connection destination type is “home” (YES in S6), the connection destination identification unit 11 sets the current connection destination type to “friend”. When the communication control unit 12 confirms the user operation to validate the DMS (YES in S9), the process proceeds to S10.

  In S10, the communication control unit 12 instructs the DMS protocol processing unit 4 to enable the DNS function. Thereby, the mobile phone 1 comes to operate as a DNS device. That is, if the mobile phone 1 is a DMP device connected to the currently connected connection candidate network, the content stored in the content storage area 16 of the mobile phone 1 can be received.

[Distribution of contents]
The processes of S11 to S16 and S21 to S26 in the flowchart of FIG. 3 indicate a content distribution process. Here, it is assumed that the DMP device that receives the content distribution is a PDA (Personal Digital Assistant).

  That is, the DMP device connected to the connection candidate network to which the mobile phone 1 is currently connected transmits a server search message for searching for the DMS device in order to receive the content distribution from the mobile phone 1 (S21). . Specifically, the DMP device transmits a multicast message (server discovery message) of an SSDP (Simple Service Discovery Protocol) packet to the connection candidate network to which the mobile phone 1 is currently connected.

  The server search message transmitted by the DMP device is received from the connection candidate network by the DMS protocol processing unit 4 via the WLAN module 2 and the WLAN data transmission / reception unit 3 (S11). The DMS protocol processing unit 4 that has received the server search message returns information for specifying the mobile phone 1 as server information (S12).

  When the DMP device receives the server information, the DMP device displays the received server information so that the user of the DMP device can see (S22). Thereby, the user of the DMP device can recognize that the mobile phone 1 can be used as a DMS device.

  When using the mobile phone 1 as a DMS device, the user of the DMP device transmits a content search message to the mobile phone 1 (S23). When the DMS protocol processing unit 4 confirms reception of the content search message (S13), the DMS protocol processing unit 4 returns content information indicating the content published by the mobile phone 1 (S14).

  When the DMP device receives the content information, the DMP device displays the received content information so that the user of the DMP device can visually recognize it (S24). Thereby, the user of the DMP device can recognize the contents that can be distributed.

  The user of the DMP device transmits a content acquisition request message for requesting acquisition of the content to be distributed to the mobile phone 1 when the content information includes the content to be distributed (S25). . The content acquisition request message is normally specified to be transmitted by transmitting a GET method of the HTTP (Hyper Transfer Transport Protocol) protocol.

  When the DMS protocol processing unit 4 confirms reception of the content acquisition request message (S15), it reads out the requested content data from the content storage area 16 and returns it to the DMP device (S16). As a result, the content data is received by the DMP device, and the DMP device performs a decoding process or the like on the received content data as necessary to reproduce or display the received content data (S26).

[DMS function continuation / end processing]
As described above, the mobile phone 1 functions as a DMS device by enabling the DMS function. However, it is not preferable from the viewpoint of power consumption to continue the state in which the DMS function is enabled. Therefore, the cellular phone 1 performs the DMS function continuation / termination process according to the elapsed time after enabling the DMS function. The processing of S17 and S18 in the flowchart of FIG. 3 corresponds to the DMS function continuation / end processing.

  That is, after enabling the DMS function in S10, the communication control unit 12 monitors whether there is a request from the DMP for a certain period of time (S17). If a certain request, such as a server search message or a content acquisition request message, is received from the DMP before the predetermined time has elapsed (NO in S17), the communication control unit 12 resets the elapsed time, As a result, the state in which the DMS function is valid continues.

  On the other hand, if a request from the DMP is not confirmed for a certain period of time (YES in S17), the communication control unit 12 instructs the DMS protocol processing unit 4 to disable the DMS function (S18). The process is terminated.

〔effect〕
As described above, in the mobile phone 1, the connection destination identification unit 11 identifies the type of the connection destination network for wireless LAN connection, and the communication control unit 12 controls the activation of the DMS function according to the identified type. Do. Specifically, the communication control unit 12 unconditionally activates the DMS function when the type is “home”, and activates the DMS function when the user is permitted to activate when the type is “friend”. Yes. On the other hand, in the case of other types, the DMS function is not validated.

  Therefore, the user of the mobile phone 1 can publish the content held by the mobile phone 1 as in a network installed in the user's home, for example, and the type of network in which the DMS function is frequently used Should be set to "Home". As a result, when the user performs a wireless LAN connection at home, the DMS function is automatically enabled in the mobile phone 1. That is, the user can use the mobile phone 1 as a DMS device without performing any special operation.

  Further, it is expected that the user of the mobile phone 1 will not have any problem even if the content held by the mobile phone 1 is made public, such as a network installed in the user's friend's house, and the frequency of using the DMS function is also somewhat. The type of network that seems to be expensive should be set to “friend”. Thereby, when the user makes a wireless LAN connection in a friend's house, the mobile phone 1 inquires of the user whether the DMS function can be validated. Therefore, the user of the mobile phone 1 can enable the DMS function as necessary, and the DMS function is enabled when it is not necessary, and content is distributed unintentionally. 1 can be prevented from increasing.

  Then, the user of the mobile phone 1 may set a type other than “home” and “friend” for a network that does not need to disclose content. Accordingly, when the mobile phone 1 is connected to a network (for example, a hot spot or a company) used by an unspecified number of users, the mobile phone 1 considers that the necessity for enabling the DMS function is low, and disables the DMS function. Thereby, the power consumption of the mobile phone 1 can be reduced, and private contents can be prevented from being disclosed to outsiders.

  Further, in the cellular phone 1, the DMS function is disabled when a request from the DMP device is not confirmed for a certain period of time. Thereby, the power consumption of the mobile phone 1 can be further reduced.

  In the above example, the example is shown in which the network is identified based on which of the connection profiles used for connection is ID1 to ID5. However, the method of identifying the connection destination is not limited to this example. .

  For example, the SSID, BSSID, MAC address, etc. of the access point may be stored in advance in the auxiliary storage unit 14 for each of the network that may disclose the content and the network that does not disclose the content. Then, the SSID, BSSID, MAC address, etc. of the access point connected to the currently connected communication network are scanned, and the communication network can be identified based on whether or not they match.

  The communication network can also be identified using connection setting information used for connecting to the communication network. For example, the communication network can be identified by using at least one of an address setting such as an IP address used to connect to the communication network, a DNS setting, a channel setting, and a security setting.

〔Concrete example〕
Finally, a specific example in which the mobile phone 1 performs communication by connecting to a network via a wireless LAN will be described with reference to FIGS. 4 and 5.

[In the house]
FIG. 4 is a diagram illustrating an example of a communication mode when the mobile phone 1 is in the house A. As shown in the figure, a local network N is formed in the house A, and a DMP device 101c, a home server 102, and an access point P are connected to the local network N by a wired LAN. Further, as shown in the figure, the DMP device 101a, the DMP device 101b, and the mobile phone 1 are connected to the local network N via an access point P via a wireless LAN.

  Here, it is assumed that the local network N is a network identified by ID1 of the WLAN connection profile shown in FIG. That is, here, it is assumed that it is possible to connect to the local network N via the access point P by using the connection profile indicated by ID1 of the WLAN connection profile shown in FIG.

  Each of the DMP devices 101a to 101c includes a DMP protocol processing unit that performs protocol processing for exchanging messages with a terminal having a DMS function in accordance with the DLNA guidelines. That is, the DMP devices 101 a to 101 c can acquire content from a device having a DMS function such as the mobile phone 1. A device that uses the mobile phone 1 as a DMS is not particularly limited, but here it is assumed that the DMP device 101a is a PDA, the DMP device 101b is a mobile phone, and the DMP device 101c is a television.

  The home server 102 is a DMS device like the mobile phone 1. Since the home server 102 is connected to the local network N by a wired LAN, the DMP device 101 c that is also connected to the local network N can acquire content from the home server 102. Further, the DMP devices 101 a and 101 b can also acquire content from the home server 102 by connecting to the local network N via the access point P.

  When the cellular phone 1 is in the house A and the user operates the input unit 8 to start the wireless LAN connection, the control unit 10 instructs the WLAN connection unit 6 to perform the WLAN connection shown in FIG. In the profile 15, a connection request is made to the network specified by the connection profile whose ID is 1.

  Here, since it is assumed that the mobile phone 1 is in the house A, the WLAN connection unit 6 can connect to the access point P by using the connection profile whose ID is 1. As a result, Connection to the local network N is successful.

  When the connection to the local network N is successful, the connection destination identification unit 11 refers to the WLAN connection profile 15 and confirms the type of network specified by the connection profile whose ID is currently connected. As shown in FIG. 2, since the type of the connection profile whose ID is 1 is “home”, the communication control unit 12 instructs the DMS protocol processing unit 4 to enable the DMS function.

  As described above, when the mobile phone 1 performs wireless LAN connection in the house A, the DMS function is automatically enabled and functions as a DMS device. As a result, the DMP devices 101 a to 101 c can receive content distribution from the mobile phone 1.

〔outside of home〕
FIG. 5 is a diagram illustrating an example of a communication mode when the mobile phone 1 is outside the house A. As shown in the figure, the mobile phone 1 is located at a location where it can be connected to an access point P ′ to the local network N ′. Further, as shown in the figure, the DMP device 101d is connected to the local network N ′ via the access point P ′. Furthermore, since the local network N ′ is connected to the Internet, the mobile phone 1 can also access the Internet via the local network N ′. That is, the local network N ′ is a so-called hot spot.

  Here, it is assumed that the local network N ′ is a network specified by ID3 of the WLAN connection profile shown in FIG. That is, here, it is assumed that it is possible to connect to the local network N 'via the access point P' by using the connection profile indicated by ID3 of the WLAN connection profile shown in FIG.

  Similar to the DMP devices 101a to 101c, the DMP device 101d includes a DMP protocol processing unit that performs protocol processing for exchanging messages with a terminal having a DMS function in accordance with the DLNA guidelines. That is, the DMP device 101d can acquire content from a device having a DMS function such as the mobile phone 1. As shown in the figure, here, it is assumed that the DMP device 101d is a notebook PC.

  Here, when the user of the mobile phone 1 operates the input unit 8 to start the wireless LAN connection, the control unit 10 instructs the WLAN connection unit 6 and the ID is 1 in the WLAN connection profile 15 of FIG. Connection requests are made in order from the connection profile.

  Here, since it is assumed that the connection profile of ID3 can be connected to the local network N ′ via the access point P ′, the WLAN connection unit 6 uses the connection profile of ID 3 to access the access point P. ', So that the connection to the local network N' is successful.

  When the connection to the local network N ′ is successful, the connection destination identifying unit 11 refers to the WLAN connection profile 15 and confirms the type of the currently connected network, that is, the local network N ′. As shown in FIG. 2, since the type of the connection profile with ID 3 is “hot spot”, the communication control unit 12 does not enable the DMS function.

  As described above, when the mobile phone 1 performs wireless LAN connection to the hot spot, the DMS function is not enabled. As a result, the contents of the mobile phone 1 are not disclosed to the DMP device 101d connected to the hot spot.

[Embodiment 2]
In the above-described embodiment, an example in which the DMS function is enabled / disabled based on the type information of the connection profile is shown. In the present embodiment, an example in which DMS validity / invalidity control is performed without using type information will be described with reference to FIGS. 6 and 7.

  The cellular phone 1 of the above embodiment and the cellular phone of the present embodiment are different except that the processing contents executed by the connection destination identification unit 11 and the communication control unit 12 are changed and the content of the WLAN connection profile 15 is changed. It has the same configuration. Therefore, the following description will focus on the differences between the mobile phone 1 of the above embodiment and the mobile phone of the present embodiment. In addition, about the structure similar to the said embodiment, the same reference number is attached | subjected and the description is abbreviate | omitted.

[Configuration of connection profile]
First, a configuration of a WLAN connection profile, which is a difference between the mobile phone 1 of the above embodiment and the mobile phone of the present embodiment, will be described with reference to FIG. FIG. 6 is a diagram illustrating an example of a WLAN connection profile. As shown in the figure, the WLAN connection profile of the present embodiment includes items similar to those in the example of FIG. 2 except that the type column 28 is eliminated.

[Process flow]
Next, processing contents executed by the connection destination identification unit 11 and the communication control unit 12 which are the differences between the mobile phone 1 of the above embodiment and the mobile phone of the present embodiment will be described with reference to FIG. FIG. 7 is a flowchart illustrating an example of processing in which the mobile phone according to the present embodiment connects to the connection candidate network and distributes content data to the DMP device. In FIG. 7, the processing for connecting to the network of S1 to S5, the content distribution processing of S11 to S16 and S21 to S26, and the continuation / end processing of the DMS function of S17 to S18 are the same as in the above embodiment. Therefore, only the connection destination network identification processing in S31 to S34 will be described here.

[Identification of connected network]
As described in the above embodiment, when it is confirmed in S3 that the wireless LAN connection is successful (NO in S3), the control unit 10 instructs the connection destination identification unit 11 to indicate that the mobile phone 1 is currently The connection candidate network being connected is identified.

  When the connection destination identification unit 11 confirms the above instruction from the control unit 10, first, referring to the WLAN connection profile 15, the security setting of the currently connected connection candidate network is not encrypted or WEP (Wired Equivalent Privacy) setting. Or other than that (S31).

  If the security setting of the currently connected connection candidate network is not encrypted or WEP (YES in S31), the connection destination identifying unit 11 notifies the communication control unit 12 to that effect. The communication control unit 12 that has received the transmission ends the process without enabling the DMS function.

  For example, in the example of FIG. 6, the security setting of the ID1 connection profile is no encryption, and the security setting of the ID3 and ID4 connection profiles is the WEP encryption setting. Therefore, the mobile phone according to the present embodiment does not function as a DMS when connected to the connection candidate network specified by the connection profiles of ID1, ID3, and ID4.

  Note that the reason why the DMS function is not enabled when the security setting is no encryption or WEP is that enabling the DMS function for such a network is a content to an unspecified number of outsiders. This is because there is a security problem.

  In other words, since anyone can access a network whose security setting is not encrypted, enabling the DMS function for such a network makes content public to an unspecified number of outsiders. It is not preferable because it is equivalent to.

  In addition, it is known that WEP encryption has a security flaw, and an outsider may access a network using WEP encryption. If the DMS function is validated in such a situation, there is a risk that content published by the DMS function may be seen by outsiders.

  Therefore, in the mobile phone of this embodiment, the DMS function is not validated when the security setting of the currently connected connection candidate network is not encrypted or WEP. Thereby, even if a user does not perform a special setting, the above danger can be avoided.

  In this embodiment, an example is shown in which the DMS function is not activated when connected to a network that is considered to have a security problem. However, there is no (less) security problem in advance. The DMS function may be validated only when connected to a network with known.

  Now, the description returns to the flowchart. If the connection destination identifying unit 11 determines in S31 that the security setting of the currently connected connection candidate network is not encrypted or WEP (NO in S31), the connection destination identifying unit 11 The state acquisition unit 5 is instructed to acquire the RSSI value at the access point of the currently connected connection candidate network. Then, the connection destination identification unit 11 checks whether or not the acquired RSSI value exceeds a predetermined threshold (S32).

  When the RSSI value is equal to or less than a predetermined threshold value (NO in S32), the connection destination identification unit 11 transmits a message to that effect to the communication control unit 12, and the received communication control unit 12 activates the DMS function. The process ends without making a mistake.

  The reason why the DMS function is not enabled when the RSSI value is equal to or less than a predetermined threshold is that the connection is disconnected during content distribution when the DMS function is enabled when the connection is unstable. This is because the playback operation on the DMP side may be hindered. For example, in FIG. 4, even outside the house A, there are cases where it is possible to connect to the access point P while being unstable depending on the location. When content is transmitted from the mobile phone 1 in such a place to the DMP devices 101a to 101c, etc., there is a possibility that the playback operation on the DMP devices 101a to 101c side may be hindered.

  In the mobile phone according to the present embodiment, the DMS function is only enabled when a certain communication level is secured by not enabling the DMS function when the RSSI value, which is an index indicating the communication level of the wireless LAN, is less than or equal to the threshold. Is enabled. Therefore, stable content distribution can be performed. Note that the communication level index is not limited to RSSI, and any index can be applied as long as it can determine the suitability of the communication level.

  Even if the RSSI value is equal to or less than a predetermined threshold value, the communication state may be improved by moving the mobile phone thereafter. Therefore, when the RSSI value is equal to or less than a predetermined threshold, the DMS function is not activated and a certain period of time is waited. When the RSSI value exceeds a predetermined threshold after a certain period of time, the DMS function is disabled. You may make it validate.

  According to said structure, when an RSSI value is below a predetermined threshold value, a DMS function will be in the state of a pause. Therefore, it is possible to prevent content distribution when the communication state is poor, and it is possible to immediately distribute the content when the communication state is recovered.

  When the RSSI value is larger than the predetermined threshold (YES in S32), the connection destination identification unit 11 instructs the location information acquisition unit 19 to acquire the current location of the mobile phone, and the current location of the mobile phone is determined in advance. It is confirmed whether it is within the set range, that is, within the set range (S33).

  When the current position of the mobile phone is outside the above setting range (NO in S33), the connection destination identifying unit 11 transmits the message to the communication control unit 12, and the received communication control unit 12 receives the DMS function. The process ends without enabling.

  That is, here, it is determined whether to enable the DMS function based on the current position of the mobile phone. As a result, the DMS function is validated only when the mobile phone is in a specific range, so that the content is not released to a network unintended by the user.

  A plurality of the setting ranges can be set. For example, by setting the user's home and the user's friend's house within the above setting range, the DMS function is automatically enabled only at the home and the friend's house. As a result, the content is released only at a location where the user determines that the content may be released.

  On the other hand, when the current position of the mobile phone is within the above setting range (YES in S33), the connection destination identification unit 11 checks whether or not a pre-designated application is running on the mobile phone 1. (S34). Then, if it is activated (YES in S34), the connection destination identification unit 11 transmits a notification to that effect to the communication control unit 12, and the communication control unit 12 that has received the communication performs processing without enabling the DMS function. Exit.

  Note that, as the application, an application for which it is not preferable to enable the DMS function during the activation of the application is designated in advance. For example, when the DMS function is enabled during the activation of the call application via the mobile phone network connection I / F 9, the power consumption during the call increases due to the overhead associated with the content distribution process, and the call time is shortened. There is a risk of becoming. If the DMS function is enabled while the browser application is being activated, the data communication speed of the browser application may be slow.

  Further, for example, when the DMS function is enabled during the activation of an application with a high processing load on the mobile phone 1, such as a digital broadcast reception application, there is a possibility that a problem may occur in the processing on the digital broadcast reception application side. . In the mobile phone according to the present embodiment, such an application is designated in advance, and the DMS function is not enabled when the application is activated, so that the occurrence of such a problem is prevented. be able to.

  In S34, when it is confirmed that the pre-designated application is not activated (NO in S34), the connection destination identifying unit 11 transmits the message to the communication control unit 12 and receives the communication control unit 12 that has received the notification. Instructs the DMS protocol processing unit 4 to enable the DMS function (S10).

  That is, in the mobile phone of this embodiment, the security setting of the currently connected connection candidate network is not encrypted or WEP, the RSSI value is larger than a predetermined threshold, and the current location of the mobile phone is within the above setting range. And the DMS function is activated when a predesignated application is not running.

  In other words, the mobile phone according to the present embodiment is connected to a connection candidate network that can be accessed from a predetermined location without any problem in security and communication state, and the DMS function operates other applications. It functions as a DMS device only when not obstructing.

  Therefore, the content is not distributed to a network that is not intended by the user of the mobile phone. In addition, the DMS function is automatically activated when necessary, and the DMS function is not activated at other times, so that power consumption can be reduced.

[Modification]
In the flowchart of FIG. 7, the order in which the processes of S31 to S33 are executed can be changed as appropriate. Moreover, it is not always necessary to perform all the processes of S31 to S34. For example, if the current position is within a specified range, the DMS function may be enabled regardless of the security setting or the like.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  Finally, the mobile phone 1 stores a recording medium in which a program code (execution format program, intermediate code program, source program) of the control program of the mobile phone 1 which is software that realizes the above-described functions is recorded in a computer-readable manner This can also be achieved by supplying the mobile phone 1 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM / flash ROM.

  The mobile phone 1 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Also, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  According to the present invention, since the DMS function can be validated only when necessary, the present invention can be applied to any device having a DMS function. In particular, the present invention can be suitably applied to a portable terminal device such as a mobile phone, a PDA, or a notebook PC, which has a possibility of being connected to various networks while moving and has a high necessity of suppressing power consumption.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, showing an embodiment of the present invention, is a block diagram illustrating a main configuration of a mobile phone. It is a figure which shows an example of the WLAN connection profile which the said mobile telephone uses. It is a flowchart which shows an example of the process which the said mobile telephone connects to a connection candidate network, and delivers content data to a DMP apparatus. It is a figure which shows an example of a communication aspect when the said mobile telephone is in a house. It is a figure which shows an example of a communication aspect when the said mobile telephone is outside a house. It is a figure which shows an example of the WLAN connection profile which the mobile telephone of embodiment different from the above of this invention uses. It is a flowchart which shows an example of the process which the said mobile telephone connects to a connection candidate network, and delivers content data to a DMP apparatus.

Explanation of symbols

1 Mobile phone (content distribution device)
2 WLAN module (communication unit)
3 WLAN data transmission / reception unit 4 DMS protocol processing unit (distribution processing means)
DESCRIPTION OF SYMBOLS 5 WLAN state acquisition part 6 WLAN connection part 7 Display part 8 Input part 10 Control part 11 Connection destination identification part 12 Communication control part 15 WLAN connection profile 19 Location information acquisition part

Claims (10)

A content distribution apparatus comprising a communication unit for communicating by connecting to any one of a plurality of communication networks, and distribution processing means for distributing content using the communication unit,
Connection destination identifying means for identifying the communication network to which the communication unit is connected;
Communication control means for enabling or disabling the delivery processing means based on the identification result of the connection destination identification means ,
The content distribution apparatus , wherein the communication control unit invalidates the distribution processing unit when a predetermined application is operating . A storage unit for storing connection setting information for connecting to each of the plurality of communication networks, and distribution permission / inhibition information indicating whether or not content can be distributed to each of the plurality of communication networks;
The connection destination identifying means identifies a communication network to which the communication unit is connected based on the connection setting information used when the communication unit is connected,
2. The content according to claim 1, wherein the communication control unit enables or disables the distribution processing unit based on distribution availability information associated with the communication network identified by the connection destination identification unit. Distribution device. An input unit for acquiring a predetermined input operation is provided,
The distribution availability information includes information indicating that the content can be distributed on condition of a predetermined input operation.
In the case where the distribution control information associated with the communication network identified by the connection destination identification unit indicates that the content can be distributed on the condition of the predetermined input operation, the communication control unit 3. The display device displays whether or not to allow content distribution on a display device, and when the predetermined input operation to the input unit is confirmed, the distribution processing means is enabled. The content distribution apparatus described. The said communication control means validates or invalidates the said delivery processing means according to the security setting of the communication network to which the said communication part is connecting, The any one of Claim 1 to 3 characterized by the above-mentioned. Content distribution device. A current position information acquisition means for acquiring current position information indicating the current position;
The content distribution apparatus according to claim 1, wherein the connection destination identification unit identifies a communication network to which the communication unit is connected based on the current position information. Comprising communication state information acquisition means for acquiring communication state information which is an index indicating a communication state of a communication network to which the communication unit is connected;
The communication control unit invalidates the distribution processing unit when communication state information indicating that a communication state of a communication network to which the communication unit is connected is worse than a predetermined state is acquired. The content distribution apparatus according to any one of claims 1 to 5.   The communication control means disables the distribution processing means when a content distribution request is not confirmed for a certain period of time after enabling the distribution processing means. The content distribution device according to any one of the above. A content distribution method for a content distribution apparatus comprising: a communication unit for communicating by connecting to any one of a plurality of communication networks; and a distribution processing unit for distributing content using the communication unit. And
A connection destination identifying step for identifying a communication network to which the communication unit is connected;
Based on the identification result of said connection destination identification step, seen including a communication control step for enabling or disabling the delivery processing means,
In the communication control step, the distribution processing means is invalidated when a predetermined application is in operation . A control program for operating the content distribution apparatus according to any one of claims 1 to 7, a control program for causing a computer to function as each means described above. A computer-readable recording medium on which the control program according to claim 9 is recorded.

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