Abstract: Provided is a calibration device that can calculate the mounting state of a stereo camera without the placing of a physical marker. In this device, an area setting processor (113) preliminarily sets, for an integrated image in which a road surface image region and a setting-prohibited region are integrated, an arrangement pattern having a plurality of area setting frames, and adjusts the arrangement pattern so that the plurality of area setting frames recede from each other. An extraction processor (114) extracts from distance images a plurality of partial images corresponding to the plurality of area setting frames. A mounting-state calculation unit (104) calculates a mounting-state parameter on the basis of a plurality of partial images, such parameter relating to the mounting state of a stereo camera used to pick up stereo images.

Abstract: When license information is transferred between a server machine and a client machine, an identifier which is unique to a series of communication sequences is provided. The identifier is sent when a communication is performed between the two machines, as well as when the license information is updated. Therefore, when a message for transferring the license information is received by the use of the same identifier, a response message is returned without updating the license information.

Abstract: Provided is a calibration device that can calculate the mounting state of a stereo camera without the placing of a physical marker. In this device, an area setting processor (113) preliminarily sets, for an integrated image in which a road surface image region and a setting-prohibited region are integrated, an arrangement pattern having a plurality of area setting frames, and adjusts the arrangement pattern so that the plurality of area setting frames recede from each other. An extraction processor (114) extracts from distance images a plurality of partial images corresponding to the plurality of area setting frames. A mounting-state calculation unit (104) calculates a mounting-state parameter on the basis of a plurality of partial images, such parameter relating to the mounting state of a stereo camera used to pick up stereo images.

Abstract: When license information is transferred between a server machine and a client machine, an identifier which is unique to a series of communication sequences is provided. The identifier is sent when a communication is performed between the two machines, as well as when the license information is updated. Therefore, when a message for transferring the license information is received by the use of the same identifier, a response message is returned without updating the license information.

Abstract: A service provider (SP) receives an original license including an edit condition that shows designation of a range of a usage condition from a content provider (CP) license management server of a CP. On the basis of the received original license, a sales license generation tool of the SP generates a sales license which includes the usage condition that shows a condition for allowing the usage of the content and from which a content key has been deleted. A content key insertion processing unit of an SP license management server judges whether or not the usage condition included in the generated license information is within the range of the edit condition, and inserts the content key into the generated license information only when the usage condition is within the range of the edit condition.

Abstract: When license information is transferred between a server machine and a client machine, an identifier which is unique to a series of communication sequences is provided. The identifier is sent when a communication is performed between the two machines, as well as when the license information is updated. Therefore, when a message for transferring the license information is received by the use of the same identifier, a response message is returned without updating the license information.

Abstract: When license information is transferred between a server machine and a client machine, an identifier which is unique to a series of communication sequences is provided. The identifier is sent when a communication is performed between the two machines, as well as when the license information is updated. Therefore, when a message for transferring the license information is received by the use of the same identifier, a response message is returned without updating the license information.

Abstract: When license information is transferred between a server machine and a client machine, an identifier which is unique to a series of communication sequences is provided. The identifier is sent when a communication is performed between the two machines, as well as when the license information is updated. Therefore, when a message for transferring the license information is received by the use of the same identifier, a response message is returned without updating the license information.

Abstract: A unit-to-unit data exchange system preventing an unfair exchange without increasing communications cost or a load on a server. A unit (11a) exchanges data with a unit (11b). An exchange completion data keeping device keeps exchange completion data that is necessary for each unit (11a and 11b) to reproduce the obtained data after the data exchange is completed. The exchange completion data keeping device transmits the exchange completion data obtained from the unit (11b) to the unit (11a) and transmits the exchange completion data obtained from the unit (11a) to the unit (11b) only when the unit (11a) and the unit (11b) have successfully received data of interest.

Abstract: The present invention provides a rights management terminal that can securely send and receive usage information while preventing spoofing and protecting user's privacy.

Abstract: When license information is transferred between a server machine and a client machine, an identifier which is unique to a series of communication sequences is provided. The identifier is sent when a communication is performed between the two machines, as well as when the license information is updated. Therefore, when a message for transferring the license information is received by the use of the same identifier, a response message is returned without updating the license information.

Abstract: When license information is transferred between a server machine and a client machine, an identifier which is unique to a series of communication sequences is provided. The identifier is sent when a communication is performed between the two machines, as well as when the license information is updated. Therefore, when a message for transferring the license information is received by the use of the same identifier, a response message is returned without updating the license information.

Abstract: A service provider (SP) 21 receives an original license including an edit condition that shows designation of a range of a usage condition from a CP license management server 114 of a content provider (CP) 11. On the basis of the received original license, a sales license generation tool 211 of the SP 21 generates a sales license: which includes the usage condition that shows a condition for allowing the usage of the content; and from which a content key has been deleted. A content key insertion processing unit 2144 of an SP license management server 214 judges whether or not the usage condition included in the generated license information is within the range of the edit condition, and inserts the content key into the generated license information only when the usage condition is within the range of the edit condition.

Abstract: The present invention provides a rights management terminal that can securely send and receive usage information while preventing spoofing and protecting user's privacy.

Abstract: An object of the present invention is to provide a unit-to-unit data exchange system in which an unfair exchange is prevented without increasing the communications cost or the load on the server. A unit (11a) exchanges data with a unit (11b). An exchange completion data keeping device (21) keeps exchange completion data that is necessary for each unit to reproduce the obtained data after the data exchange is completed. The exchange completion data keeping device transmits the exchange completion data obtained from the unit (11b) to the unit (11a) and transmits the exchange completion data obtained from the unit (11a) to the unit (11b) only when both of the unit (11a) and the unit (11b) have successfully received data of interest.

Abstract: When license information is transferred between a server machine (101) and a client machine (103), an identifier which is unique to a series of communication sequences is provided. Such identifier is sent when a communication is performed between such two machines as well as when the license information is updated. Therefore, when a message for transferring the license information is received by the use of the same identifier, a response message is returned without updating the license information.

Abstract: There is provided a content distribution system which is capable of a distributing a content in accordance with a requested data format or the capabilities of a terminal used, and which can eliminate inequity associated with content distribution in different data formats, by altering a usage rule. During content purchase processing, in a content distribution apparatus 1, information concerning use of a content purchased by a user is registered in the user's right database 20 based on a user database 18 and a content right database 19. For each content, the content right database 19 previously stores one or more units of information concerning content usage including usage rules for different usage modes. During content use processing, based on the registered information, the content distribution apparatus 1 transmits to the user terminal 3 a license stipulating a usage rule corresponding to the usage mode of a requested content.

Abstract: An access control system includes a server 11, an access management database storage device 12, first and second client devices 13 and 15, and data storage devices 14 and 16. The first and second client devices 13 and 15 forms a peer-to-peer file exchange system, and can access the server 11. The access management database storage device 12 stores an access management list. When receiving a request for data from the second client device 15, the first client device 13 inquires the server 11 about whether the requested data can be accessed. The server 11 determines whether the data can be accessed by using the access management list.

Abstract: A device 201 of a licensee &ggr; generates an issue request for a permission to use content data by using a media identifier in a portable recording medium 101 of a licensee &bgr;, and forwards the resulting issue request to a rights management unit 71. The rights management unit 71 is managing rights information of the content data provided to the licensee &bgr;, and based on the rights information together with the issue request, generates permission information to allow the portable recording medium 101 to use the content data. Based on the permission information, the rights management unit 71 then generates license information with which the use of the content data in the device connected to the portable recording medium 101 is controlled, and transmits the license information to the device 201. The device 201 then processes the license information to control the use of the content data.