JP5827605B2 - Usage control device, usage control method, and program - Google Patents

Description

The present invention utilizes a control device for controlling the use of the service, the control method for utilization, and a program.

  In recent years, provision of services for distributing music data such as ringtones (registered trademark) and content data such as videos and coupons to communication devices such as mobile terminals possessed by users has become widespread. Further, the content data to be distributed is encrypted, and the communication device that has received the content data obtains a decryption key for decrypting the content data, decrypts the content data, and then plays back the content data. Some perform display and the like.

  In addition, in order to protect the rights related to the copyright law of the content data to be used, the technology for distributing content data only to communication devices registered in advance, or the content data only to communication devices existing at a predetermined position Technology has been considered (for example, see Patent Document 1).

JP 2006-209161 A

  However, in the technique described in Patent Document 1, in order to use the content data, there is a problem that the user must be present at a predetermined position, which is inconvenient for the user.

An object of the present invention, usage control device for solving the above problems, is to provide a control method for utilization, and the program.

The usage control device of the present invention is:
A position comparison unit that compares a first position of the first communication device that approves the use of content data with a second position indicated by preset position information;
Decryption for transmitting the encrypted content data to a second communication device that uses the content data, and decrypting the encrypted content data based on the comparison result in the position comparison unit A controller that transmits a key to the second communication device;
The position comparison unit determines whether a third position of the second communication device is within a predetermined range based on the second position;
When the third position is not within a predetermined range based on the second position, the control unit requests the approval to the first communication device.

Further, the usage control method of the present invention includes:
A usage control method in a usage control device that controls usage of content data,
A process of transmitting the encrypted content data to a second communication device that uses the content data;
A process of determining whether or not the third position of the second communication device is within a predetermined range based on a second position indicated by preset position information ;
When the third position is not within a predetermined range based on the second position, a process of requesting the approval to the first communication device that approves the use of the content data;
A process of comparing the first position of the first communication device and the second position;
And a process of transmitting a decryption key for decrypting the encrypted content data to the second communication device based on the result of the comparison .

The program of the present invention, Ru is execute each processing of the usage control method in a computer.

  As described above, according to the present invention, regarding the use of content data, it is possible to achieve both protection of content data license and improvement of user convenience.

It is a figure which shows one Embodiment of the utilization control system of this invention. It is a figure which shows an example of an internal structure of the usage control apparatus shown in FIG. It is a figure which shows an example of the approval information memorize | stored in the license database shown in FIG. It is a figure which shows an example of the content information memorize | stored in the content database shown in FIG. It is a figure which shows an example of an internal structure of the user terminal shown in FIG. It is a figure which shows an example of an internal structure of the approver terminal shown in FIG. It is a sequence diagram for demonstrating an example of the process which transmits content list information among the usage control methods in the usage control system shown in FIG. It is a sequence diagram for demonstrating an example of the process which transmits content data among the usage control methods in the usage control system shown in FIG. It is a sequence diagram for demonstrating an example of the process which transmits a decoding key among the usage control methods in the usage control system shown in FIG. It is a sequence diagram for demonstrating the other example of the process which transmits a decoding key among the usage control methods in the usage control system shown in FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram showing an embodiment of a usage control system of the present invention.

  As shown in FIG. 1, the present embodiment is a form in which a usage control device 100, a user terminal 200, and an approver terminal 300 are connected to each other via a communication network 400. Here, there may be a plurality of user terminals 200 and approver terminals 300. In addition, communication is performed between the usage control apparatus 100, the user terminal 200, and the approver terminal 300 by using an HTTP (HyperText Transfer Protocol) protocol or the like.

  The usage control device 100 is a device connected to the communication network 400 via a router or the like, for example. Further, the usage control device 100 controls the usage (display, reproduction, editing, etc.) of content data (documents, images, music, etc.) in the user terminal 200.

  FIG. 2 is a diagram illustrating an example of an internal configuration of the usage control apparatus 100 illustrated in FIG. 1.

  As shown in FIG. 2, the usage control apparatus 100 shown in FIG. 1 includes a license database 101, a content database 102, a content storage unit 103, a position comparison unit 104, an encryption unit 105, and a content transmission history unit. 106, a decryption key transmission history unit 107, a charging processing unit 108, a control unit 109, and a communication unit 110 are provided.

  The license database 101 stores content data approval information.

  FIG. 3 is a diagram showing an example of approval information stored in the license database 101 shown in FIG.

  In the license database 101 shown in FIG. 2, as shown in FIG. 3, the content ID, the position information, and the approver information are stored in association with each other. Here, latitude and longitude are stored in the license database 101 as position information. In addition, the approver ID, password, and contact information are stored in the license database 101 as approver information. FIG. 3 shows an example in which the position information stored in the license database 101 is information indicating one point designated by latitude and longitude. For example, the license database 101 The latitude may be “35.62000 to 35.620100”, the longitude may be “139.730000 to 139.7730100”, and the position information may be designated as a predetermined rectangular range.

  The content ID is content identification information that can identify content data to be distributed (transmitted) to the user terminal 200. The position information is information that can specify a position using latitude and longitude. The approver information is an ID that can identify the approver, a password for authenticating the approver, an e-mail address of the approver terminal, an IP (Internet Protocol) address, and a contact information such as a telephone number. These pieces of information are stored in advance in the license database 101 in association with each content data. Moreover, the usage method of such information is mentioned later.

  The content database 102 stores content information related to content data such as a file name of the content data.

  FIG. 4 is a diagram showing an example of content information stored in the content database 102 shown in FIG.

  As shown in FIG. 4, the content database 102 shown in FIG. 2 stores a content ID, a content file name, a decryption key, attribute information, and an icon image in association with each other.

  The content ID is the same as that described with reference to FIG. The content file name is the actual file name of the content data. The decryption key is a key for decrypting the encrypted content data. The attribute information is information relating to the content such as a song name, artist name (singer name), album name, movie title name, performer name, store name where coupons can be used, and the like. The icon image is simple information that makes it easy for the user to select content data by playing (displaying) it on the user terminal 200. For example, if the content data is an image, the icon image may be an image obtained by reducing a part of the image. If the content data is a song, the icon image may be a part of a photo of an album jacket that contains the song. It may be.

  The content database 102 may store the encrypted content data itself in association with the information described above.

  The content storage unit 103 stores content data. At this time, the content storage unit 103 stores the encrypted content data. It goes without saying that this encryption algorithm must be able to be decrypted using the decryption key stored in the content database 102. Further, the content storage unit 103 assigns a content file name to the content data and stores it.

  The position comparison unit 104 includes a position indicated by position information transmitted from the approver terminal 300 (hereinafter referred to as a first position) and a position indicated by position information stored in the license database 101 (hereinafter referred to as a second position). (Referred to as position). For example, the position comparison unit 104 may compare whether or not the distance between the first position and the second position is within a predetermined range. For example, the position comparison unit 104 may determine whether or not the first position is included in a predetermined circular area centered on the second position. In addition, the position information indicating the second position stored in the license database 101 indicates a rectangular range (for example, latitude: 35.62000 to 35.620100, longitude: 139.73000 to 139.7730100). In some cases, the position comparison unit 104 may determine whether or not the first position is included in the rectangular range. Note that the position information indicating the first position transmitted from the approver terminal 300 is approved in response to the request for approval for use of the content transmitted from the control unit 109 to the approver terminal 300 via the communication unit 110. Included in the response (approval notification) transmitted from the user terminal 300. Further, the position comparison unit 104 compares the position indicated by the position information transmitted from the user terminal 200 (hereinafter referred to as a third position) with the second position stored in the license database 101. May be.

  When the control unit 109 transmits a decryption key to the user terminal 200 via the communication unit 110, the encryption unit 105 encrypts the decryption key. At this time, the encryption unit 105 encrypts the decryption key using the user terminal ID transmitted from the user terminal 200. Note that when using the HTTPS (HTTP over SSL / TLS) protocol for sending and receiving the decryption key, the encryption unit 105 may not encrypt the decryption key.

  The content transmission history unit 106 stores a history in which the control unit 109 transmits content data to the user terminal 200 via the communication unit 110. Specifically, the content transmission history unit 106 stores which content data is transmitted to whom, in association with the content ID of the content data, the user terminal ID, and date / time information indicating the transmission date / time. To do.

  The decryption key transmission history unit 107 stores a history of transmission of the decryption key to the user terminal 200 by the control unit 109 via the communication unit 110. Specifically, the decryption key transmission history unit 107 indicates to whom and when the decryption key for which content data was transmitted, the content ID of the content data to be decrypted using the decryption key, the user terminal ID, The date / time information indicating the transmission date / time is stored in association with the approver ID used to determine whether or not the decryption key can be transmitted.

  The billing processing unit 108 performs billing processing according to the history stored in the decryption key transmission history unit 107. This accounting process may be a general one that is performed by calculating an amount based on the number of transmissions, a preset unit price for each content data, a content data capacity, and the like, and is not particularly defined here.

  When the content data is requested from the user terminal 200 by designating the content ID, the control unit 109 reads the encrypted content data from the content storage unit 103 and transmits it to the user terminal 200 via the communication unit 110. To do. In addition, after transmitting the encrypted content data, the control unit 109 sends a request for a decryption key from the user terminal 200 to the approver terminal 300 via the communication unit 110 to the user terminal 200 of the user terminal 200. An ID is transmitted to request approval for use of content data. Further, when a response (approval notification) is transmitted from the approver terminal 300 to the approval request, the control unit 109 (based on the comparison result in the position comparison unit 104 (the first position and the second position) Request from the user terminal 200 when the distance to the position is within a predetermined range, or when the first position is included in a predetermined rectangular area surrounded by the second position range). The decrypted key is read from the content database 102. In addition, the control unit 109 outputs the decryption key read from the content database 102 and the user terminal ID included in the request signal from the user terminal 200 to the encryption unit 105. In addition, the control unit 109 transmits the decryption key encrypted by the encryption unit 105 to the user terminal 200 via the communication unit 110.

  The communication unit 110 has a communication interface for performing communication between the user terminal 200 and the approver terminal 300 via the communication network 400.

  Note that the license database 101, the content database 102, and the content storage unit 103 may be provided in an external device that can communicate with the usage control device 100.

  The user terminal 200 is a communication device (second communication device) such as a conventional mobile terminal or a smartphone possessed by a user who uses content data. The connection between the user terminal 200 and the communication network 400 may be a connection via a wireless base station using a mobile phone network or a connection via a wireless router using a wireless LAN (Local Area Network).

  FIG. 5 is a diagram illustrating an example of an internal configuration of the user terminal 200 illustrated in FIG.

  As shown in FIG. 5, the user terminal 200 shown in FIG. 1 includes a position information acquisition unit 201, a communication unit 202, an operation unit 203, a camera 204, a display unit 205, a speaker 206, and a storage unit. 207 and a control unit 208 are provided.

  The position information acquisition unit 201 acquires position information indicating the position of the user terminal 200. For example, the position information acquisition unit 201 may acquire position information of the user terminal 200 from a GPS (Global Positioning System) satellite.

  The communication unit 202 has an interface function for performing communication via the communication network 400.

  The operation unit 203 is a button key or a touch panel for inputting information to the user terminal 200 when operated by the user.

  The camera 204 captures a subject (object or code information such as a two-dimensional code).

  The display unit 205 is a display that displays information (text or image).

  The speaker 206 outputs sound.

  The storage unit 207 is a storage medium that stores information. The storage unit 207 includes, for example, a SIM (Subscriber Identity Module) card, and a user terminal ID that can identify the user terminal 200 is stored in the SIM card.

  The control unit 208 controls these components. Further, the control unit 208 executes a program stored in the storage unit 207.

  The approver terminal 300 is a communication device (first communication device) possessed by an approver who approves the use of content data. The approver terminal 300 may be, for example, a communication device such as a conventional mobile terminal or a smartphone. In addition, the connection between the approver terminal 300 and the communication network 400 may be a connection through a wireless base station using a mobile phone network or a connection through a wireless router using a wireless LAN.

  FIG. 6 is a diagram illustrating an example of an internal configuration of the approver terminal 300 illustrated in FIG. 1.

  As shown in FIG. 6, the approver terminal 300 shown in FIG. 1 includes a position information acquisition unit 301, a communication unit 302, an operation unit 303, a camera 304, a display unit 305, a speaker 306, and a storage unit. 307 and a control unit 308 are provided.

  The position information acquisition unit 301 acquires position information indicating the position of the approver terminal 300. For example, the position information acquisition unit 301 may acquire position information of the approver terminal 300 from a GPS satellite.

  The communication unit 302 has an interface function for performing communication via the communication network 400.

  The operation unit 303 is a button key or a touch panel for inputting information to the approver terminal 300 when operated by the approver.

  The camera 304 captures a subject (code information such as an object and a two-dimensional code).

  The display unit 305 is a display that displays information (text or image).

  The speaker 306 outputs sound such as music.

  The storage unit 307 is a storage medium that stores information. The storage unit 307 includes, for example, a SIM card, and an approver terminal ID that can identify the approver terminal 300 is stored in the SIM card.

  The control unit 308 controls these components. In addition, the control unit 308 executes the program stored in the storage unit 307.

  Below, the usage control method in the usage control system shown in FIG. 1 is demonstrated.

  FIG. 7 is a sequence diagram for explaining an example of processing for transmitting content list information in the usage control method in the usage control system shown in FIG.

  First, the user operates the operation unit 203, and the camera 204 of the user terminal 200 captures and reads code information (for example, a two-dimensional code) posted on a pamphlet or the like (step S1). Then, the control unit 208 converts the read code information into a URL (Uniform Resource Locator), and the communication unit 202 accesses the usage control apparatus 100 via the communication network 400 using the URL (step S2).

  Then, the control unit 109 of the usage control apparatus 100 transmits content list information indicating a list of distributable content data to the user terminal 200 via the communication unit 110 (step S3). This content list information includes a content ID, attribute information, and an icon image.

  When the communication unit 202 of the user terminal 200 receives the content list information transmitted from the usage control device 100, the display unit 205 displays a list of content data based on the received content list information (step S4). In the list of content data displayed by the display unit 205, the content data name (song name or image name) and icon included in the attribute information are provided so that the user can easily select content data desired to be distributed from the list. An image is displayed.

  FIG. 8 is a sequence diagram for explaining an example of processing for transmitting content data in the usage control method in the usage control system shown in FIG.

  In a state where the list of content data is displayed on the display unit 205 by the process of step S4 described above, the user operates the operation unit 203 to specify (select) desired content data from the list. (Step S11), a request signal for requesting the content data is transmitted from the communication unit 202 to the usage control apparatus 100 (Step S12). This request signal includes the content ID of the designated content data and the user terminal ID stored in the storage unit 207.

  When the control unit 109 receives the content request signal transmitted from the user terminal 200 via the communication unit 110, the control unit 109 uses the content ID included in the request signal as a search key and the content file name as a content database. 102. And the control part 109 reads the content data of the specified content file name from the content memory | storage part 103 (step S13).

  Subsequently, the control unit 109 transmits the read content data to the user terminal 200 via the communication unit 110 (step S14). The control unit 109 writes (stores) the content ID and the user terminal ID included in the request signal in the content transmission history unit 106 in association with the date / time information indicating the date / time when the content data was transmitted (step S110). S15).

  On the other hand, when the communication unit 202 receives the content data transmitted from the usage control device 100, the storage unit 207 stores the content data (step S16). This content data is encrypted as described above. At this time, the storage unit 207 stores the content data and the content ID in association with each other.

  FIG. 9 is a sequence diagram for explaining an example of processing for transmitting a decryption key in the usage control method in the usage control system shown in FIG.

  First, when the user operates the operation unit 203 and content data requesting use (playback, display, etc.) is specified among the content data stored in the storage unit 207 (step S21), the control unit 208 reads the content ID and user terminal ID of the specified content data from the storage unit 207. Then, the communication unit 202 requests a decryption key for decrypting the content data by transmitting a decryption key request signal including the content ID read by the control unit 208 and the user terminal ID to the usage control device 100. (Step S22).

  When the control unit 109 receives the decryption key request signal via the communication unit 110, the contact information of the approver is specified from the license database 101 using the content ID included in the received decryption key request signal as a search key. Then, the control unit 109 sends the content data corresponding to the content ID to the destination approver terminal 300 indicated by the contact information via the communication unit 110 in the user terminal ID included in the received decryption key request signal. An approval request mail for requesting approval for use in the corresponding user terminal 200 is transmitted (step S23). This approval request mail is attached with a URL that is an access destination for acquiring an approval screen for selecting / inputting whether or not the use is allowed.

  When the communication unit 302 of the approver terminal 300 receives the approval request mail transmitted from the usage control apparatus 100, the display unit 305 displays the content of the approval request mail. The display includes the added URL, and when the approver operates the operation unit 303 to select the URL, the communication unit 302 uses the URL to notify the usage control apparatus 100. to access. Then, the control unit 109 transmits an approval screen including input fields for an approver ID and a password to the approver terminal 300 via the communication unit 110. When the communication unit 302 receives the approval screen transmitted from the usage control device 100, the display unit 305 displays the received approval screen (step S24).

  When the approver operates the operation unit 303 according to the approval screen displayed on the display unit 305 to input the approver ID and password, the communication unit 302 displays the input approver ID and password. It transmits to the usage control apparatus 100.

  When the control unit 109 receives the approver ID and password transmitted from the approver terminal 300 via the communication unit 110, the control unit 109 stores the received approver ID and password and the license database 101. Check with the approver ID and password. If they match each other as a result of the collation, the control unit 109 transmits the approval screen data in which the content ID (which may be a content name) requesting approval of use, the user terminal ID, and the approval button is described, to the communication unit 110. Is transmitted to the approver terminal 300. When the communication unit 302 receives the approval screen data transmitted from the usage control apparatus 100, the display unit 305 displays an approval screen based on the approval screen data.

  After that, when the approver operates the operation unit 303 to select the approval button displayed on the display unit 305 (step S25), the content ID displayed on the approval screen and the position information acquisition unit 301 are displayed. The communication unit 302 transmits the acquired location information of the approver terminal 300 to the usage control apparatus 100 in the approval notification indicating that the usage is approved (step S26). Here, the timing at which the position information acquisition unit 301 acquires the position information is not particularly defined, but it is preferable that the time from the acquisition of the position information to the transmission of the approval notification is shorter.

  When the control unit 109 receives the approval notification transmitted from the approver terminal 300 via the communication unit 110, the position comparison unit 104 uses the first position indicated by the position information included in the approval notification and the license database 101. The second position indicated by the position information stored in association with the content ID is compared. Specifically, as described above, the position comparison unit 104 determines that the first position is within a predetermined range from the second position (such as within a radius of 500 m from the longitude and latitude of the second position), or It is determined whether or not the first position is within the range of the second position (longitude = 35.62000 to 35.620100, latitude = 139.73000 to 139.7730100). Step S27).

  When the position comparison unit 104 determines that the first position is within a predetermined range based on the second position, that is, the first position is within a predetermined range from the second position, or When it is determined that the position of 1 is within the range of the second position, the control unit 109 reads the decryption key from the content database 102 using the content ID included in the approval notification as a search key. Subsequently, the encryption unit 105 encrypts the decryption key using the user terminal ID included in the decryption key request signal. The control unit 109 transmits the encrypted decryption key to the user terminal 200 via the communication unit 110 (step S28). In addition, the control unit 109 associates the content ID, the approver ID, the user terminal ID, and information indicating the decryption key transmission date and time when the decryption key is transmitted, and writes it in the decryption key transmission history unit 107 (stored) (Step S29).

  In this way, the charging processing unit 108 may perform the charging process according to the information stored in the decryption key transmission history unit 107. If the approver approves, the approver may be charged.

  When the communication unit 202 receives the decryption key transmitted from the usage control apparatus 100, the control unit 208 writes (stores) the received decryption key in the storage unit 207. Thereafter, the control unit 208 decrypts the decryption key stored in the storage unit 207 using the user terminal ID stored in the storage unit 207, and uses the decrypted decryption key to store the storage unit 207. The content data stored in is used (reproduced). When the content data is music data, the control unit 208 reproduces the music data while sequentially decrypting the music data with the decryption key, and the speaker 206 outputs sound.

  On the other hand, if the approval button is not selected (a button that is not approved is selected) in step S25, the communication unit 302 transmits a notification indicating that the approval has not been made (non-approval notification) to the usage control device 100. (Step S30). When the control unit 109 receives the non-approval notification transmitted from the approver terminal 300 via the communication unit 110, the control unit 109 transmits a notification indicating that the decryption key cannot be transmitted via the communication unit 110. It transmits to the user terminal 200 (step S31).

  If the position comparison unit 104 determines in step S27 that the first position is not within the predetermined range based on the second position, that is, the first position is within the predetermined range from the second position. If it is determined that the first position is not within the range of the second position, in step S31, the control unit 109 sends a notification indicating that the decryption key cannot be transmitted. It transmits to the user terminal 200 via the communication unit 110.

  Further, in addition to the above-described usage control, usage control according to the position of the user terminal 200 may be performed.

  FIG. 10 is a sequence diagram for explaining another example of the process of transmitting the decryption key in the usage control method in the usage control system shown in FIG.

  First, when the user operates the operation unit 203 and content data requesting use (playback, display, etc.) is specified among the content data stored in the storage unit 207 (step S41), the control unit 208 reads the content ID and user terminal ID of the specified content data from the storage unit 207. Then, the communication unit 202 transmits a decryption key request signal including the content ID and user terminal ID read by the control unit 208 and the location information acquired by the location information acquisition unit 201 to the usage control device 100. A decryption key for decrypting the content data is requested (step S42). Here, the timing at which the position information acquisition unit 201 acquires the position information is not particularly defined, but it is preferable that the time from acquisition of the position information to transmission of the decryption key request signal is short.

  When the control unit 109 receives the decryption key request signal via the communication unit 110, the control unit 109 determines whether position information is included in the received decryption key request signal (step S43). When it is determined that position information is included in the received decryption key request signal, the position comparison unit 104 determines the third position indicated by the position information and the content ID included in the received decryption key request signal. The second position indicated by the position information associated with and stored in the license database 101 is compared. Specifically, the position comparison unit 104 determines that the third position is within a predetermined range from the second position (such as within a radius of 500 m from the longitude and latitude of the second position), or the third position is It is determined whether it is within the range of the second position (longitude = 35.62000 to 35.620100, latitude = 139.73000 to 139.7730100, etc.) (step S44).

  When the position comparison unit 104 determines that the third position is not within the predetermined range based on the second position, that is, the third position is not within the predetermined range from the second position, or When it is determined that the position 3 is not within the range of the second position, the control unit 109 uses the content ID included in the received decryption key request signal as a search key and retrieves the contact information of the approver from the license database 101. Identify. Also, when it is determined in step S43 that the decryption key request signal does not include position information, the control unit 109 uses the content ID included in the received decryption key request signal as a search key, and the approver's Contact information is specified from the license database 101. Then, the control unit 109 sends the content data corresponding to the content ID to the destination approver terminal 300 indicated by the contact information via the communication unit 110 in the user terminal ID included in the received decryption key request signal. An approval request mail for requesting approval for use in the corresponding user terminal 200 is transmitted (step S45). This approval request mail is attached with a URL that is an access destination for acquiring an approval screen for selecting / inputting whether or not the use is allowed.

  When the communication unit 302 of the approver terminal 300 receives the approval request mail transmitted from the usage control apparatus 100, the display unit 305 displays the content of the approval request mail. The display includes the added URL, and when the approver operates the operation unit 303 to select the URL, the communication unit 302 uses the URL to notify the usage control apparatus 100. to access. Then, the control unit 109 transmits an approval screen including input fields for an approver ID and a password to the approver terminal 300 via the communication unit 110. When the communication unit 302 receives the approval screen transmitted from the usage control apparatus 100, the display unit 305 displays the received approval screen (step S46).

  When the approver operates the operation unit 303 according to the approval screen displayed on the display unit 305 to input the approver ID and password, the communication unit 302 displays the input approver ID and password. It transmits to the usage control apparatus 100.

  When the control unit 109 receives the approver ID and password transmitted from the approver terminal 300 via the communication unit 110, the control unit 109 stores the received approver ID and password and the license database 101. Check with the approver ID and password. If they match each other as a result of the collation, the control unit 109 transmits the approval screen data in which the content ID (which may be a content name) requesting approval of use, the user terminal ID, and the approval button is described, to the communication unit 110. Is transmitted to the approver terminal 300. When the communication unit 302 receives the approval screen data transmitted from the usage control apparatus 100, the display unit 305 displays an approval screen based on the approval screen data.

  Thereafter, when the approver operates the operation unit 303 to select the approval button displayed on the display unit 305 (step S47), the content ID displayed on the approval screen and the position information acquisition unit 301 are displayed. The communication unit 302 transmits the acquired location information of the approver terminal 300 to the usage control apparatus 100 in the approval notification indicating that the usage is approved (step S48). Here, the timing at which the position information acquisition unit 301 acquires the position information is not particularly defined, but it is preferable that the time from the acquisition of the position information to the transmission of the approval notification is shorter.

  When the control unit 109 receives the approval notification transmitted from the approver terminal 300 via the communication unit 110, the position comparison unit 104 uses the first position indicated by the position information included in the approval notification and the license database 101. The second position indicated by the position information stored in association with the content ID is compared. Specifically, as described above, the position comparison unit 104 determines that the first position is within a predetermined range from the second position (such as within a radius of 500 m from the longitude and latitude of the second position), or It is determined whether or not the first position is within the range of the second position (longitude = 35.62000 to 35.620100, latitude = 139.73000 to 139.7730100). Step S49).

  When the position comparison unit 104 determines that the first position is within a predetermined range based on the second position, that is, the first position is within a predetermined range from the second position, or When it is determined that the position of 1 is within the range of the second position, the control unit 109 reads the decryption key from the content database 102 using the content ID included in the approval notification as a search key. If the position comparison unit 104 determines in step S44 that the third position is within a predetermined range based on the second position, that is, the third position is within a predetermined range from the second position. Even if it is determined that the third position is within the range of the second position, the control unit 109 uses the content ID included in the approval notification as a search key and obtains a decryption key from the content database 102. read out. Subsequently, the encryption unit 105 encrypts the decryption key using the user terminal ID included in the decryption key request signal. The control unit 109 transmits the encrypted decryption key to the user terminal 200 via the communication unit 110 (step S50). In addition, the control unit 109 associates the content ID, the approver ID, the user terminal ID, and information indicating the decryption key transmission date and time when the decryption key is transmitted, and writes it in the decryption key transmission history unit 107 (stored) (Step S51).

  In this way, the charging processing unit 108 may perform the charging process according to the information stored in the decryption key transmission history unit 107. If the approver approves, the approver may be charged.

  When the communication unit 202 receives the decryption key transmitted from the usage control apparatus 100, the control unit 208 writes (stores) the received decryption key in the storage unit 207. Thereafter, the control unit 208 decrypts the decryption key stored in the storage unit 207 using the user terminal ID stored in the storage unit 207, and uses the decrypted decryption key to store the storage unit 207. The content data stored in is used (reproduced). When the content data is music data, the control unit 208 reproduces the music data while sequentially decrypting the music data with the decryption key, and the speaker 206 outputs sound.

  On the other hand, if the approval button is not selected (a button that is not approved is selected) in step S47, the communication unit 302 transmits a notification (non-approval notification) indicating that the approval button has not been approved to the usage control apparatus 100. (Step S52). When the control unit 109 receives the non-approval notification transmitted from the approver terminal 300 via the communication unit 110, the control unit 109 transmits a notification indicating that the decryption key cannot be transmitted via the communication unit 110. It transmits to the user terminal 200 (step S53).

  If the position comparison unit 104 determines in step S49 that the first position is not within the predetermined range based on the second position, that is, the first position is within the predetermined range from the second position. If it is determined that the first position is not within the range of the second position, in step S53, the control unit 109 sends a notification indicating that the decryption key cannot be transmitted. It transmits to the user terminal 200 via the communication unit 110.

  In order to use the content data in the user terminal 200, a right such as a display right, a reproduction right, and an editing right may be given instead of giving a decryption key.

  The present invention as described above can be used in the following situations.

  For example, privilege content data can be used only for fans who have met an artist in a fan meeting or the like, with the approval of the artist at that location. Also, the traveler downloads the encrypted coupon from the Internet, and the travel organizer or local store at the location approves the coupon to be valid only for the traveler who has participated in the tour. In addition, an application that makes a contract with a third party is effective only when an approver in a predetermined public place is met and approved.

  As described above, according to the present invention, with respect to the use of content data, it is possible to achieve both protection of the license of content data and improvement of user convenience by using position information.

  The processing performed by each component provided in the use control apparatus 100 described above may be performed by a logic circuit that is produced according to the purpose. In addition, a computer program (hereinafter referred to as a program) in which processing contents are described as a procedure is recorded on a recording medium readable by the usage control apparatus 100, and the program recorded on the recording medium is read by the usage control apparatus 100. , May be executed. The recording medium that can be read by the usage control device 100 includes a removable recording medium such as a floppy (registered trademark) disk, a magneto-optical disk, a DVD, and a CD, as well as a ROM, a RAM, and the like built in the usage control device 100. Memory, HDD, etc. The program recorded on the recording medium is read by the control unit 109 provided in the usage control apparatus 100, and the same processing as described above is performed under the control of the control unit 109. Here, the control unit 109 operates as a computer that executes a program read from a recording medium on which the program is recorded.

A part or all of the above embodiment can be described as in the following supplementary notes, but is not limited thereto.
(Additional remark 1) The position comparison part which compares the 1st position of the 1st communication apparatus which approves utilization of content data, and the 2nd position which preset position information shows,
Decryption for transmitting the encrypted content data to a second communication device that uses the content data, and decrypting the encrypted content data based on the comparison result in the position comparison unit And a control unit that transmits a key to the second communication device.
(Supplementary Note 2) An encryption unit that encrypts the decryption key using the device identification information of the second communication device transmitted from the second communication device,
The usage control device according to appendix 1, wherein the control unit transmits the decryption key encrypted by the encryption unit to the second communication device.
(Supplementary Note 3) When the decryption key is requested from the second communication device after transmitting the encrypted content data, the control unit requests the first communication device for the approval,
The position comparison unit compares the first position and the second position indicated by position information included in a response transmitted from the first communication apparatus in response to the request. The use control apparatus according to Supplementary Note 1 or Supplementary Note 2.
(Additional remark 4) The said position comparison part determines whether the 3rd position of the said 2nd communication apparatus is in the predetermined range based on the said 2nd position,
The use according to appendix 3, wherein the control unit requests the approval to the first communication device when the third position is not within a predetermined range based on the second position. Control device.
(Supplementary Note 5) The position comparison unit determines whether the first position is within a predetermined range based on the second position,
The control unit transmits the decryption key to the second communication device when the first position is within a predetermined range based on the second position. The use control apparatus according to any one of the above.
(Supplementary Note 6) A decryption key transmission history unit for storing a history of transmitting the decryption key;
The usage control apparatus according to any one of appendices 1 to 5, further comprising a charging processing unit that performs a charging process according to a history stored in the decryption key transmission history unit.
(Supplementary Note 7) A content database that stores a plurality of the encrypted content data and a plurality of the decryption keys that respectively decrypt the encrypted content data in association with each other,
The control unit reads a decryption key associated with the encrypted content data transmitted to the second communication device from the content database, and sends the read decryption key to the second communication device. The usage control apparatus according to any one of appendices 1 to 6, wherein the transmission is transmitted.
(Supplementary Note 8) In a usage control system including a first communication device that approves the use of content data, a second communication device that uses the content data, and a usage control device.
The usage control device includes:
A position comparison unit that compares a first position of the first communication device with a second position indicated by preset position information;
The encrypted content data is transmitted to the second communication device, and a decryption key for decrypting the encrypted content data is decrypted based on the comparison result in the position comparison unit. And a control unit for transmitting to the communication device.
(Supplementary note 9) A usage control method for controlling usage of content data,
A process of comparing a first position of the first communication device that approves the use of the content data with a second position indicated by preset position information;
A process of transmitting the encrypted content data to a second communication device that uses the content data;
A usage control method for performing a process of transmitting a decryption key for decrypting the encrypted content data to the second communication device based on a result of the comparison.
(Appendix 10)
A procedure for comparing the first position of the first communication device that approves the use of the content data with the second position indicated by the preset position information;
Transmitting the encrypted content data to a second communication device using the content data;
A program for executing a procedure for transmitting a decryption key for decrypting the encrypted content data to the second communication device based on the comparison result.

DESCRIPTION OF SYMBOLS 100 Usage control apparatus 101 License database 102 Content database 103 Content storage part 104 Position comparison part 105 Encryption part 106 Content transmission history part 107 Decryption key transmission history part 108 Charge processing part 109 Control part 110 Communication part 200 User terminal 201,301 Position information acquisition unit 202, 302 Communication unit 203, 303 Operation unit 204, 304 Camera 205, 305 Display unit 206, 306 Speaker 207, 307 Storage unit 208, 308 Control unit 300 Approver terminal 400 Communication network

Claims (5)

A position comparison unit that compares a first position of the first communication device that approves the use of content data with a second position indicated by preset position information;
Decryption for transmitting the encrypted content data to a second communication device that uses the content data, and decrypting the encrypted content data based on the comparison result in the position comparison unit A controller that transmits a key to the second communication device;
The position comparison unit determines whether a third position of the second communication device is within a predetermined range based on the second position;
The usage control device, wherein the control unit requests the approval to the first communication device when the third position is not within a predetermined range based on the second position. The usage control device according to claim 1 ,
The position comparison unit determines whether the first position is within a predetermined range based on the second position;
The usage control device, wherein the control unit transmits the decryption key to the second communication device when the first location is within a predetermined range based on the second location. In the usage control apparatus according to claim 1 or 2 ,
A decryption key transmission history part for storing the history of transmitting the decryption key in association with approver identification information for identifying the approver;
A usage control apparatus comprising: a charging processing unit that performs charging processing for an approver indicated by approver identification information in accordance with a history stored in the decryption key transmission history unit. A usage control method in a usage control device that controls usage of content data,
A process of transmitting the encrypted content data to a second communication device that uses the content data;
A process of determining whether or not the third position of the second communication device is within a predetermined range based on a second position indicated by preset position information ;
When the third position is not within a predetermined range based on the second position, a process of requesting the approval to the first communication device that approves the use of the content data;
A process of comparing the first position of the first communication device and the second position;
A process of transmitting a decryption key for decrypting the encrypted content data to the second communication device based on the result of the comparison;
The usage control method characterized by including. A program for causing a computer to execute each process of the usage control method according to claim 4 .

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