JP2007325231A - Content reproduction system, mobile terminal, authentication server and content reproduction apparatus, and program therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a content reproduction system capable of prohibiting content reception and reproduction control to content reproduction apparatuses installed abroad. <P>SOLUTION: When a mobile phone 5 transmits an authentication request including a mobile phone type number to an authentication server, an authentication server 2 refers to a mobile phone type number table to judge whether authentication is possible or not, In the mobile phone type number table, a fact that a type number available only domestically can be authenticated is registered and a fact that a type number also available abroad can not be authenticated is registered. The authentication server 2 authenticates the type number available only domestically but does not authenticate the type number available abroad. Therefore, when the mobile phone 5 connects to the authentication server 2 and transmits an authentication request in a state where the mobile phone 5 and a content reproduction apparatus 4 are located abroad, since the mobile phone 5 available abroad is not authenticated, the content reproduction apparatus 4 can be prevented from being controlled by the mobile phone 5 abroad. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a content reproduction system that distributes content stored in a content server to a content reproduction device and reproduces the content on the content reproduction device.

  There has been proposed a system in which content is distributed from a content server to a content reproduction device via the Internet, and the content is reproduced by the content reproduction device. When the content distributed by the content server is video data such as a movie, the content distribution and the content playback are generally permitted only to the content playback device installed in Japan, and the content playback installed overseas The device is not allowed to distribute content and play content. For this reason, it is necessary to distribute the content after proving that the content playback device is logically installed in Japan using the Japanese closed communication network. There are many problems with commercial advantages. Therefore, there is a demand for a system that distributes content after using the normal Internet and proving that a content reproduction apparatus is installed in Japan.

  On the other hand, the following Patent Document 1 describes an authentication system using a mobile phone. A device ID acquisition request is sent from the mobile phone terminal to the information home appliance terminal, the device ID is transferred from the information home appliance terminal to the mobile phone terminal, and the registered user ID and device ID are transmitted from the mobile phone terminal to the authentication server. User authentication and device authentication are performed by the authentication server. If the authentication is successful, the address for identifying the related device and the remote control program for the information home appliance terminal are transmitted from the authentication server to the mobile phone terminal as authentication information. Is transferred from the mobile phone terminal to the information home appliance terminal, the information home appliance terminal is connected to the related device based on this address, and the mobile phone terminal is used as a remote control of the information home appliance terminal using a remote control program.

  However, since there are mobile phones that can be used both in Japan and abroad, even if the user is overseas, a remote control program can be obtained by using such a mobile phone. As a result, this system has a problem that it is not possible to prohibit the control of the content playback apparatus installed overseas.

JP 2005-323070 A

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a content reproduction system capable of prohibiting control of a content reproduction apparatus installed overseas.

  A content reproduction system according to a preferred embodiment of the present invention is capable of controlling a content reproduction device that reproduces content, a mobile terminal (for example, a mobile phone) that remotely controls the content reproduction device, and the content reproduction device. An authentication server for authenticating the portable terminal. The mobile terminal includes an authentication request unit that transmits an authentication request including its own mobile terminal model number to the authentication server, an electronic certificate storage unit that stores an electronic certificate including usable time information received from the authentication server, Remote control signal transmitting means for transmitting a remote control signal including the electronic certificate stored in the electronic certificate storage means to the content reproduction apparatus. The authentication server refers to the model number table storing the mobile terminal model number that can be authenticated and the mobile terminal model number that cannot be authenticated, and whether or not the mobile terminal model number included in the authentication request can be authenticated. Authentication enable / disable determining means for determining, and authentication means for authenticating the portable terminal when the authentication enable / disable determining means determines that authentication is possible, and creating the electronic certificate when the authenticating means authenticates and transmitting to the mobile terminal Electronic certificate creating means. The content playback apparatus can be used to determine whether or not the available time still remains by analyzing a remote control signal receiving means for receiving a remote control signal from the portable terminal and an electronic certificate included in the received remote control signal When it is determined that the available time remains with the time determination means, the operation based on the remote control signal is executed, and when it is determined that the available time does not remain, the operation based on the remote control signal is not executed. Control means.

  When the mobile terminal transmits an authentication request including the mobile terminal model number to the authentication server, the authentication server refers to the mobile terminal model number table to determine whether authentication is possible. In the portable terminal model number table, for example, information indicating that a model number that can be used only in Japan can be authenticated is registered, and information that a model number that can be used overseas can not be authenticated is registered. In this case, the authentication server authenticates model numbers that can be used only in Japan, and does not authenticate model numbers that can be used overseas. Accordingly, when the mobile terminal connects to the authentication server and transmits an authentication request when the mobile terminal and the content playback apparatus are overseas, the mobile terminal that can be used overseas is not authenticated. Control can be prevented.

  Further, in order for the mobile terminal to control the content reproduction device, an electronic certificate (for example, a time stamp ID) created by the authentication server after authentication is required. The electronic certificate includes usable time information. When the usable time expires, the content playback apparatus cannot be controlled, and re-authentication is required. As a result, after authenticating in Japan, even if you take a mobile device and content playback device overseas and try to control the content playback device overseas, you cannot re-authenticate when the available time expires. Control of the apparatus can be prevented.

  In a preferred embodiment, the authentication request transmitted by the authentication request unit further includes a user ID, and the remote control signal transmitted by the remote control signal transmission unit further includes a user ID. The authentication server includes an electronic certificate table for storing the user ID and the electronic certificate in association with each other, and an electronic certificate table in which the user ID and the electronic certificate are associated with each other when the authentication unit authenticates. And an electronic certificate registration means for registering with the electronic certificate. The content reproduction apparatus further includes an authentication confirmation unit that confirms the presence / absence of authentication of the user ID by comparing the electronic certificate included in the received remote control signal with the electronic certificate stored in the electronic certificate table. The control means executes an operation based on the remote control signal when the authentication confirmation means can confirm the authentication, and does not execute an operation based on the remote control signal when the authentication confirmation means cannot confirm the authentication.

  In this case, the electronic certificate received by the content reproduction apparatus is checked against the electronic certificate stored in the authentication server to confirm whether or not the authentication has actually been received. Therefore, when the user illegally creates an electronic certificate and the portable terminal transmits a remote control signal to the content reproduction apparatus, control by the remote control signal can be prohibited.

  In a preferred embodiment, the content reproduction apparatus stores user ID storage means including a user ID area for storing a user ID whose authentication has been confirmed, and a user ID included in the received remote control signal in the user ID area. And a user ID determining means for determining whether or not the user ID matches. If the user ID determination means determines that the user IDs do not match, the control means confirms that the user ID included in the remote control signal received by the authentication confirmation means is authenticated by the authentication server, and then the control means The user ID is registered in the user ID area, and an operation based on the remote control signal is executed. When the user ID determination means determines that the user IDs match, the control means executes an operation based on the remote control signal without the authentication confirmation means confirming the authentication.

  In this case, the content reproduction apparatus does not need to perform authentication confirmation every time it receives a remote control signal from the mobile terminal, can reduce unnecessary communication costs, and can speed up the execution of operations based on the remote control signal. it can.

  In a preferred embodiment, the content reproduction device further includes means for causing the display device to display a content for prompting re-authentication when the remaining usable time of the electronic certificate included in the remote control signal is equal to or shorter than a predetermined time. Prepare.

  In a preferred embodiment, the authenticable portable terminal model number is a model number that can be connected to the authentication server only when the portable terminal is in the country, and the unauthenticated portable terminal model number is The model number can be connected to the authentication server in a certain state.

  In the content reproduction system of the present invention, the authentication server does not authenticate the model number registered in the cellular phone model number table as being unauthenticated, so the content reproduction device is controlled by the cellular phone that can be used overseas. Can be banned. As a result, illegal use overseas can be prevented in domestic movie distribution services.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings. However, the present invention is not limited to these embodiments. FIG. 1 is a block diagram illustrating a content reproduction system 100 according to a preferred embodiment of the present invention. The content reproduction system 100 includes an authentication server 2, an application server 3, a content reproduction device 4, and a mobile phone 5. The content reproduction system further includes a content server 6. The authentication server 2, the application server 3, the content reproduction device 4, and the content server 6 are connected to each other via an electric communication line such as the Internet 8.

The authentication server 2 is a server that authenticates remote control (hereinafter simply referred to as control) of the content reproduction device 4 by the mobile phone 5 for each user ID input to the mobile phone 5. The application server 3 is a server that transmits a remote control application to the mobile phone 5.

The content reproduction device 4 can be controlled only by the remote control application of the mobile phone 5 that has been authenticated. “Controlled” means, for example, receiving content from the content server 6 or playing back content. “Content” is a general term for video data, music data, and still image data, and is typically video data such as a movie. The content reproduction device 4 reproduces the video data distributed from the content server 6 and outputs the video to a display device 7 connected to the outside.

The mobile phone 5 is connected to the Internet 8 via a base station 9, a mobile phone communication network 10 and a gateway 11. The mobile phone 5 receives authentication for controlling the content reproduction device 4 from the authentication server 2. The mobile phone 5 has a model number that can be used only in Japan and a model number that can be used in Japan and overseas. “Available only in Japan” means that the mobile phone can be connected to the application server 3 and the authentication server 2 in a state in the country, but cannot be connected to the application server 3 and the authentication server 2 in a state in which it is overseas. “Available overseas” means that the mobile phone 5 can be connected to the application server 3 and the authentication server 2 in a state where the mobile phone 5 is located overseas. In this example, the mobile phone 5 can receive authentication from the authentication server only for model numbers that can be used only in Japan. When the authentication is received, the mobile phone 5 can control the content reproduction device 4 using the remote control application received from the application server 3. Since the mobile phone 5 having a model number that can be used overseas cannot be authenticated by the authentication server 2, it is possible to prohibit the control of the content reproduction apparatus 4 installed overseas.

  FIG. 2 is a block diagram illustrating a schematic configuration of the authentication server 2. The authentication server 2 includes an authentication unit 21, a time stamp ID creation unit 22, an input unit 23, a communication unit 24, and a table storage unit 25. The table storage unit 25 stores a mobile phone model number table 26, a user authentication table 27, a terminal information table 28, and a time stamp ID table 29.

The mobile phone model number table 26 is a table for discriminating whether the mobile phone 5 that controls the content reproduction apparatus 4 is a model for domestic use or a model that can be used overseas, as shown in FIG. As shown, it includes items of communication carrier, mobile phone model number and permission flag. The permission flag is a domestic-only model number and “TRUE” is registered for a model number that can be authenticated, and “FALSE” is registered for a model number that can be used overseas and cannot be authenticated. Each item of the mobile phone model number table 26 is registered via the input unit 23 by a company operating the authentication server 2.

  The user authentication table 27 is a table for determining whether or not the user ID and password transmitted from the mobile phone 5 are legitimate. As shown in FIG. The user ID notified in advance and the password set by the user of the mobile phone 4 are registered.

  The terminal information table 28 is a table for managing information of the content reproduction device 4 controlled by the mobile phone 5, and as shown in FIG. 3C, the terminal ID and IP address items of the content reproduction device 4 are displayed. Including.

  The time stamp ID table 29 is a table for confirming whether or not the user ID of the mobile phone 5 has been authenticated by the content reproduction device 4 by checking the time stamp ID. The user ID and the time stamp ID Includes items. The time stamp ID is deleted from the time stamp ID table 29 when the available time has expired.

  The authentication unit 21 authenticates the mobile phone 5 by comparing the user ID, password, and mobile phone model number transmitted from the mobile phone 5 with the registered contents of the user authentication table 27 and the mobile phone model table 26. The authentication means that the mobile phone 5 proves permission to control the content reproduction apparatus 4 using the remote control application.

The time stamp ID creating unit 22 creates a time stamp ID and transmits it to the mobile phone 5. The time stamp ID is an example of an electronic certificate required when the authenticated mobile phone 5 controls the content reproduction device 4. As shown in FIG. 3E, the time stamp ID includes an authentication date and time, an available time, and a mobile phone model number. The time stamp ID indicates that the mobile phone 5 can control the content reproduction device 4 from the authentication date and time until the usable time ends.

The communication unit 24 transmits / receives data and commands to / from the mobile phone 5, the content reproduction device 4, the content server 6, and the like via the Internet 8.

  FIG. 4 is a block diagram illustrating a schematic configuration of the application server 3. The application server 3 includes an application recording unit 31, an application transmission unit 32, a control unit 33, and a communication unit 34.

  The application recording unit 31 records a remote control application for the mobile phone 5 to control the content reproduction device 4. The application transmission unit 32 reads the remote control application from the application recording unit 31 and transmits it to the mobile phone 5. The control unit 33 executes other operations described later of the application server 3. The communication unit 34 transmits / receives data and commands to / from the mobile phone 5, the content reproduction device 4, the content server 6, and the like via the Internet 8. In this example, the remote control application can be freely installed on the mobile phone 5 regardless of the presence or absence of authentication. However, the remote control application may be installed on the mobile phone 5 when it is authenticated for the first time.

  FIG. 5 is a block diagram showing a schematic configuration of the content reproduction apparatus 4. The content reproduction device 4 includes a content recording unit 41, a reproduction unit 42, a remote control reception unit 43, a control availability determination unit 44, a control unit 45, a communication unit 46, and a user ID storage unit 47. The content recording unit 41 records one or a plurality of video data distributed from the content server 6. The reproduction unit 42 reads out and reproduces the video data recorded in the content recording unit 41. Alternatively, the playback unit 42 performs streaming playback of the video data from the content server 6.

  The control availability determination unit 44 analyzes the remote control signal transmitted from the mobile phone 5 and determines whether or not the content reproduction device 4 can be controlled based on the user ID and the time stamp ID included in the remote control signal. A remote control signal transmitted from the mobile phone 5 is shown in FIG. The remote control signal includes a control code indicating control contents (playback, stop, fast forward, download, power on / off, etc.), a user ID, and a time stamp ID (authentication date and time, available time and mobile phone model number). The remote control signal is an infrared signal in this example, but Bluetooth (registered trademark) or the like may be employed.

  The user ID storage unit 47 attempts to control the content reproduction apparatus 4 with a user ID area for registering a user ID that can control the content reproduction apparatus 4 and a user ID different from the user ID registered in the user ID area. In order to confirm whether or not the user ID is a user ID authenticated by the authentication server 2, the temporary user ID area for registering the user ID as a temporary user ID is included.

  The remote control receiving unit 43 receives a remote control signal transmitted from the mobile phone 5. The control unit 45 executes other operations of the content reproduction device 4. The communication unit 46 transmits / receives data and commands to / from the content server 6 and the authentication server 2 via the Internet 8.

  FIG. 7 is a block diagram showing a schematic configuration of the mobile phone 5. The mobile phone 5 includes a remote control transmission unit 51, a remote control application 52, a mobile phone model number storage unit 53, a user ID storage unit 54, a time stamp ID storage unit 55, an input unit 56, a control unit 57, and a communication unit 58. The remote control application 52 includes a control code based on a user operation input via the input unit 56, a user ID stored in the user ID storage unit 54, and a time stamp ID stored in the time stamp ID storage unit 55. Is generated and transmitted to the content reproduction device 4 via the remote control transmission unit 51.

  The mobile phone model number storage unit 53 stores the model number of the mobile phone 5 in advance. The user ID storage unit 54 temporarily stores the user ID input by the user at the time of authentication (for example, until the usable time of the time stamp ID ends). The time stamp ID storage unit 55 stores the time stamp ID received from the authentication server 2 temporarily (for example, until the usable time of the time stamp ID ends) for controlling the content reproduction device 4. The control unit 57 performs other operations of the mobile phone 5. The communication unit 58 transmits and receives data and commands to and from the authentication server 2 and the application server 3 via the mobile phone communication network 10 and the Internet 8.

  The operation of the content reproduction system 100 having the above configuration will be described. FIG. 8 is a sequence diagram illustrating a process in which the mobile phone 5 receives the remote control application and receives authentication by the authentication server 2.

[Remote application acquisition processing]
As shown in FIG. 8, when the user inputs a remote control application acquisition instruction via the input unit 56, the mobile phone 5 connects to the application server 3 and requests transmission of the remote control application (S1). Upon receiving the request, the application server 3 reads the remote control application recorded in the application recording unit 31 and transmits it to the mobile phone 5 (S2). The mobile phone 5 receives the remote control application from the application server 3 and installs it in a built-in memory (not shown). Note that the processing of S1 and S2 only needs to be executed when the remote control application is not installed.

[Authentication process]
The user inputs a user ID and password, and inputs an instruction to receive authentication to the mobile phone 5. As illustrated in FIG. 8, the mobile phone 5 transmits an authentication request including the user ID input by the user, the password, and the mobile phone model number stored in advance in the mobile phone model number storage unit 53 to the application server 3 ( S3). At this time, the user ID is registered in the user ID storage unit 54.

  When the application server 3 receives the authentication request from the mobile phone 5, the application server 3 transfers the received authentication request (user ID, password, and mobile phone model number) to the authentication server 2, and inquires the authentication server 2 whether the mobile phone 5 can be authenticated. (S4).

  When receiving the authentication request from the application server 3, the authentication server 2 determines whether or not to authenticate the mobile phone 5. Specifically, the authentication server 2 determines whether or not a combination of a user ID and a password included in the authentication request is registered in the user authentication table 27. If registered in the user authentication table, the authentication server 2 refers to the mobile phone model number table 26 and determines whether the mobile phone model number included in the authentication request is for domestic use only (that is, the permission flag is “TRUE”). Or not). If the mobile phone model number is exclusively for domestic use, the authentication server 2 authenticates the mobile phone 5 and sends an authentication notification to the application server 3 (S5). On the other hand, if the mobile phone model number can be used even overseas (that is, the permission flag is “FALSE”), the mobile phone 5 is not authenticated, and a non-authentication notification is notified to the mobile phone 5 via the application server 3.

  When receiving the authentication notification from the authentication server 2, the application server 3 requests the authentication server 2 to transmit a time stamp ID (S6). Upon receiving the time stamp ID request, the authentication server 2 creates a time stamp ID and sends it back to the application server 3 (S7). The time stamp ID is an authentication date and time (a date and time when the time stamp ID is created, for example, a UNIX (registered trademark) serial value), a predetermined available time (for example, 172,800 seconds (2 days)), a mobile phone Includes phone model number. At this time, the application server 3 stores the authenticated user ID and the created time stamp ID in association with each other in the time stamp ID table 29.

  The application server 2 receives the time stamp ID and transfers it to the mobile phone 5 (S8). The mobile phone 5 receives the time stamp ID and stores it in the time stamp ID storage unit 55. The mobile phone 5 transmits a time stamp ID reception completion notification indicating that the time stamp ID has been received to the application server 3 (S9), and the application server 3 receives it and transfers it to the authentication server 2 (S10). When the authentication server 2 receives the time stamp ID reception completion notification, the authentication process ends.

[Remote control processing]
FIG. 9 is a flowchart for explaining the operation of the content reproduction device 4 when the content reproduction device 4 is controlled by the remote control application installed in the mobile phone 5.

  When the user operates the input unit 56 of the mobile phone 5, the mobile phone 5 transmits a remote control signal shown in FIG. When receiving the remote control signal from the mobile phone 5, the content reproduction device 4 determines whether or not the user ID included in the received remote control signal is the same as the user ID that has controlled the content reproduction device 4 until immediately before ( S11). Specifically, it is determined whether or not the user ID included in the received remote control signal matches the user ID stored in the user ID area 48 of the user ID storage unit 47.

  When the user ID included in the received remote control signal is different from the user ID stored in the user ID area 48 (S11: NO), it is confirmed whether the received user ID is authenticated by the authentication server 2. If it has been authenticated, an operation based on the remote control signal is executed (S12 to S19). Specifically, first, the content reproduction device 4 registers the user ID included in the received remote control signal in the temporary user ID area 49 of the user ID storage unit 47 (temporarily defines the user ID).

Subsequently, the content reproduction apparatus 4 connects to the authentication server 2 and determines whether or not the received user ID is actually authenticated by the authentication server 2 and the time stamp stored in the authentication server 2. It confirms by collating with ID (S13). For example, the content reproduction device 4 transmits the user ID stored in the temporary user ID area 49 to the authentication server 2. The authentication server 2 refers to the time stamp ID table 29, extracts the time stamp ID corresponding to the received user ID, and sends it back to the content reproduction device 4. The content reproduction device 4 determines whether or not the time stamp ID received from the authentication server is the same as the time stamp ID included in the remote control signal received from the mobile phone 5 (S14).

If they are the same (S14: YES), it can be determined that the user ID stored in the temporary user ID area 49 is authenticated by the authentication server 2, and therefore the user ID stored in the temporary user ID area 49 Is moved to the user ID area 48 (the temporary user ID area 49 is cleared) (S15). Thereby, when a remote control signal is transmitted by the same user ID thereafter, it is not necessary to confirm whether or not the user ID is authenticated in the processes of S12 to S15. Subsequently, the content reproduction apparatus 4 transmits a terminal ID to the authentication server 2 (S16). The content reproduction device 4 permits control from the mobile phone 5 (S17), and executes processing according to the received remote control signal.

On the other hand, when the time stamp ID received from the authentication server 2 is not the same as the time stamp ID included in the remote control signal received from the mobile phone 5, or when the time stamp ID cannot be received from the authentication server 2 (S14: NO), it is determined that the user ID is an unauthorized user ID that has not been authenticated by the authentication server 2. As a result, the content reproduction apparatus 4 deletes the user ID stored in the temporary user ID (S18), prohibits the control by the received remote control signal (S19), and ends the process. Therefore, even if an attempt is made to illegally create a type stamp ID and control the content playback device 4 with a user ID that has not been authenticated by the authentication server 2, video data is prevented from being received and / or played back by the content playback device 4. it can.

  Next, in S11, when the received user ID matches the user ID stored in the user ID area 48 (S11: YES), the received user ID is authenticated by the authentication server 2 through the processes of S12 to S17. Since it is confirmed that it has been done, the process proceeds to S20.

  The content reproduction device 4 refers to the received time stamp ID, and of the available time given to the user ID, whether or not the currently available time is equal to or shorter than a predetermined time (for example, 10 minutes). Is determined (S20). Specifically, it is determined whether or not the time obtained by subtracting the elapsed time from the authentication date and time to the current date and time from the available time in the time stamp ID is equal to or less than a predetermined time.

  If the remaining available time is longer than the predetermined time (S20: NO), it is determined that sufficient available time remains, so remote control is permitted as it is (S21), and the operation according to the remote control signal is performed. To finish the process.

  On the other hand, when the remaining available time is equal to or shorter than the predetermined time (S20: YES), it is determined whether or not the remaining available time is 0 (S22). If the remaining available time is 0 (S22: NO), the content reproduction device 4 cannot be controlled by the received user ID, and therefore the content reproduction device 4 discards the remote control signal and prohibits remote control (S23). ), The process is terminated. In this case, the mobile phone 5 needs to connect to the authentication server 2 and receive re-authentication.

  If the remaining available time is not 0 (S22: YES), it is determined that the available time is over when a short time has passed, and the content reproduction apparatus 4 cannot be controlled with this user ID. As a result, the content reproduction apparatus 4 displays, for example, the content “Please re-authenticate, because the available time will end soon” on the display device 7 (S24). Thereafter, the content reproduction device 4 permits remote control (S25), executes an operation according to the remote control signal, and ends the process.

[Re-authentication (extension of available time) processing]
The user who sees the display content that prompts the re-authentication of the display device 7 operates the mobile phone 5 to execute the re-authentication operation (receives an extension of the usable time). Since the re-authentication process is substantially the same as the processes of S3 to S10, the description thereof is omitted.

  As a result of the above processing, since the mobile phone 5 that can be used overseas is registered as “FALSE” in the mobile phone model number table, it cannot be authenticated in the authentication processing of S5. As a result, since the cellular phone 5 cannot acquire the time stamp ID, it cannot transmit a remote control signal for controlling the content reproduction device 4. Therefore, it is possible to prevent the content playback device 4 from being controlled by the mobile phone 5 that can be used overseas, and to reproduce video data such as movies overseas.

  Further, since the time stamp ID includes the available time, it is necessary to re-authenticate when the available time ends. As a result, even if the mobile phone 5 and the content playback device 4 are taken overseas after authenticating in Japan and downloading the content to the content playback device 4, the playback of the content playback device 4 can be controlled when the available time ends. Disappear.

If the user ID is not authenticated, the time stamp ID corresponding to the user ID is not registered in the time stamp ID table 29. Therefore, the content reproduction apparatus 4 cannot confirm the time stamp ID included in the received remote control signal and the time stamp ID stored in the time stamp ID of the authentication server, and thus can confirm that the user ID is not authenticated. . Therefore, even when the time stamp ID is illegally created or altered, the control of the content reproduction apparatus 4 can be prohibited.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment. Although the mobile phone 5 executes authentication processing with the authentication server via the application server 3, the mobile phone 5 may directly connect to the authentication server 2 to execute authentication processing. The authentication server 2 authenticates using the user ID and password, but is not limited to this, and may authenticate using the device ID of the mobile phone. When the content reproduction device 4 confirms the authentication of the user ID with the authentication server 2, the content reproduction device 4 transmits the user ID and the time stamp ID to the authentication server 2, and confirms whether the authentication server 2 has been authenticated, You may make it notify to the content reproduction apparatus 4. FIG. The content is not limited to video, but may be music or still images. A computer program for causing a computer to execute the operation of each device described above is provided, and a recording medium on which these programs are recorded can be provided.

  The present invention can be suitably applied to a content reproduction system that distributes content only in Japan and reproduces the content using a content reproduction apparatus.

1 is a block diagram illustrating a content reproduction system 100 according to a preferred embodiment of the present invention. It is a block diagram which shows the authentication server 2 by preferable embodiment of this invention. It is a figure which shows (a) mobile phone model number table, (b) user authentication table, (c) terminal information table, (d) time stamp ID table, and (e) time stamp ID. It is a block diagram which shows the application server 3 by preferable embodiment of this invention. It is a block diagram which shows the content reproduction apparatus 4 by preferable embodiment of this invention. It is a data structure which shows the remote control signal which the mobile telephone 5 transmits. It is a block diagram which shows the mobile telephone 5 by preferable embodiment of this invention. It is a sequence chart which shows an authentication process. It is a flowchart which shows operation | movement of the content reproduction apparatus 4 at the time of remote control.

Explanation of symbols

2 Authentication Server 4 Content Playback Device 5 Mobile Phone 26 Mobile Phone Model Number Table 29 Time Stamp ID Table 55 Time Stamp ID Storage Unit

Claims (11)

A content reproduction system comprising: a content reproduction device that reproduces content; a portable terminal that remotely controls the content reproduction device; and an authentication server that authenticates the portable terminal so that the content reproduction device can be controlled;
An authentication request means for transmitting an authentication request including the mobile terminal model number of the mobile terminal to the authentication server;
Electronic certificate storage means for storing an electronic certificate including usable time information received from the authentication server;
Remote control signal transmitting means for transmitting a remote control signal including the electronic certificate stored in the electronic certificate storage means to the content reproduction device;
A model number table in which the authentication server stores a mobile terminal model number that can be authenticated and a mobile terminal model number that cannot be authenticated;
Authentication enable / disable determining means for determining whether or not the mobile terminal model number included in the authentication request can be authenticated, with reference to the model number table;
An authentication means for authenticating the mobile terminal when the authentication enable / disable determining means determines that authentication is possible;
Electronic certificate creating means for creating the electronic certificate and transmitting it to the portable terminal when the authentication means authenticates;
Remote control signal receiving means for receiving a remote control signal from the mobile terminal;
Analyzing the electronic certificate contained in the received remote control signal and determining whether or not the available time still remains,
A control unit that executes an operation based on the remote control signal when it is determined that the available time remains, and a controller that does not execute an operation based on the remote control signal when it is determined that the available time does not remain. , Content playback system. The authentication request transmitted by the authentication request means further includes a user ID;
The remote control signal transmitted by the remote control signal transmitting means further includes a user ID;
An electronic certificate table for the authentication server to store the user ID and the electronic certificate in association with each other;
An electronic certificate registration unit that registers the user ID and the electronic certificate in association with each other when the authentication unit authenticates;
The content reproduction apparatus further includes an authentication confirmation unit that confirms the presence / absence of authentication of the user ID by comparing an electronic certificate included in the received remote control signal with an electronic certificate stored in the electronic certificate table. ;
The control means performs an operation based on the remote control signal when the authentication confirmation means can confirm authentication, and does not execute an operation based on the remote control signal when the authentication confirmation means fails to confirm authentication. The content reproduction system according to claim 1. A user ID storage unit including a user ID area for storing the user ID whose authentication has been confirmed by the content reproduction device;
User ID determination means for determining whether or not the user ID included in the received remote control signal matches the user ID stored in the user ID area;
When the user ID determination means determines that the user IDs do not match, the control means confirms that the user ID included in the remote control signal received by the authentication confirmation means is authenticated by the authentication server, and then the control means Register the user ID in the user ID area and execute an operation based on the remote control signal;
The content reproduction according to claim 1 or 2, wherein, when the user ID determination unit determines that the user IDs match, the control unit executes an operation based on a remote control signal without the authentication confirmation unit confirming the authentication. system.   The said content reproduction apparatus is further provided with a means to display on the display device the content of prompting re-authentication when the remaining usable time of the electronic certificate included in the remote control signal is a predetermined time or less. 4. The content reproduction system according to any one of 3.   The authenticable portable terminal model number is a model number that can be connected to the authentication server only when the portable terminal is in the country, and the unauthenticated portable terminal model number is in the state where the portable terminal is overseas. The content reproduction system according to any one of claims 1 to 4, wherein the content reproduction system is a model number connectable to the computer. A portable terminal that remotely controls a content playback device,
Connection means for connecting to an authentication server for authenticating the portable terminal so that the content reproduction apparatus can be controlled;
An authentication request means for transmitting an authentication request including its own mobile terminal model number to the authentication server;
When the authentication server determines that the mobile terminal model number can be authenticated and authenticates the mobile terminal, an electronic certificate receiving means for receiving an electronic certificate including usable time information created by the authentication server;
Electronic certificate storage means for storing the electronic certificate received from the authentication server;
A remote control signal including an electronic certificate stored in the electronic certificate storage means, wherein the content reproduction device performs an operation based on the remote control signal when it is determined that the available time remains, and the available time A remote control signal transmitting means for transmitting a remote control signal that does not execute an operation based on the remote control signal to the content reproduction device when it is determined that there is no remaining. An authentication server that authenticates the mobile terminal so that the content playback device can be controlled,
Connection means for connecting the content playback device to a mobile terminal for remote control;
A model number table that stores mobile terminal model numbers that can be authenticated and mobile terminal models that cannot be authenticated;
An authentication request receiving means for receiving an authentication request including the mobile terminal model number from the mobile terminal;
Authentication enable / disable determining means for determining whether or not the mobile terminal model number included in the authentication request can be authenticated, with reference to the model number table;
An authentication means for authenticating the mobile terminal when the authentication enable / disable determining means determines that authentication is possible;
Creating an electronic certificate including usable time information for determining whether or not the content reproduction apparatus should perform an operation based on a remote control signal when the authenticating means authenticates, and transmitting the electronic certificate to the portable terminal And an authentication server. A content playback device for playing back content,
Connection means for connecting to an authentication server for authenticating the mobile terminal so that the content reproduction apparatus can be controlled;
Remote control signal receiving means for receiving a remote control signal from the portable terminal;
An electronic certificate included in the received remote control signal, and when the authentication server determines that the mobile terminal model number can be authenticated and authenticates the mobile terminal, the usable time information created by the authentication server An available time determination means for analyzing an electronic proof including:
A control unit that executes an operation based on the remote control signal when it is determined that the available time remains, and that does not execute an operation based on the remote control signal when it is determined that no available time remains. , Content playback device. An operation program for a mobile terminal that remotely controls a content playback device,
A connection step of connecting to an authentication server for authenticating the mobile terminal so that the content playback device can be controlled;
An authentication request step of transmitting an authentication request including its own mobile terminal model number to the authentication server;
When the authentication server determines that the mobile terminal model number can be authenticated and authenticates the mobile terminal, an electronic certificate receiving step of receiving an electronic certificate including usable time information created by the authentication server;
An electronic certificate storage step for storing the electronic certificate received from the authentication server;
A remote control signal including the electronic certificate stored in the electronic certificate storage step, wherein the content reproduction apparatus performs an operation based on the remote control signal when it is determined that the available time remains, and the available time remains An operation program for a portable terminal that causes a computer to execute a remote control signal transmission step of transmitting a remote control signal that does not execute an operation based on the remote control signal to the content reproduction device when it is determined that the remote control signal is not executed. An operation program of an authentication server for authenticating a portable terminal so that the content playback device can be controlled,
A connection step of connecting the content playback device to a mobile terminal for remote control;
A model number storing step for storing a mobile terminal model number that can be authenticated and a mobile terminal model number that cannot be authenticated in a model number storage table;
An authentication request receiving step of receiving an authentication request including the mobile terminal model number from the mobile terminal;
An authentication enable / disable determination step of determining whether or not the mobile terminal model number included in the authentication request can be authenticated with reference to the model number table;
An authentication step for authenticating the mobile terminal when the authentication enable / disable determination step determines that authentication is possible;
Creation of an electronic certificate including usable time information for determining whether or not the content reproduction device should perform an operation based on a remote control signal when the authentication step authenticates, and transmits the electronic certificate to the portable terminal An authentication server operation program causing a computer to execute the steps. An operation program for a content playback apparatus for playing back content,
A connection step of connecting to an authentication server for authenticating the mobile terminal so that the content reproduction apparatus can be controlled;
A remote control signal receiving step of receiving a remote control signal from the portable terminal;
An electronic certificate included in the received remote control signal, and when the authentication server determines that the mobile terminal model number can be authenticated and authenticates the mobile terminal, the usable time information created by the authentication server An available time determination step of analyzing whether or not an available time still remains by analyzing an electronic certificate including
An operation based on the remote control signal when it is determined that the available time remains, and a step of not performing an operation based on the remote control signal when it is determined that no available time remains. An operation program for the content reproduction apparatus to be executed.

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