Abstract: A bridge apparatus is disclosed, the bridge apparatus being connected between a first network and a second network and achieving a communication between equipment connected to the first network and equipment connected to the second network. This apparatus accepts communication from the equipment over the first network to equipment disconnected from the second network, and then, preserves contents of the communication even in the case where the equipment over the second network has been disconnected from the second network for reasons such as electric power cut. In the case where the disconnected equipment has been connected to the second network again, this apparatus transmits the accepted contents of the communication to the reconnected equipment.

Abstract: There is provided with a protocol conversion apparatus including: a database unit which stores service descriptions, each describing at least one service in accordance with specification of a first protocol, and conversion rule descriptions each describing at least one protocol conversion rule; a database retrieval unit which retrieves from the database unit a service description and a conversion rule description; a virtual processing unit which conducts processing of behaving as if providing the service described in the retrieved service description; a conversion unit which converts an access request to the service to an access request of a second protocol, on the basis of a protocol conversion rule associated with the service; and an access request transmission unit which transmits the converted access request.

Abstract: A contents player including: a reading unit which accesses data carrier and reads out contents including multimedia data and a script from the data carrier; a playing unit which plays the multimedia data included in the contents; an interpreting unit which interprets the script included in the contents; an access unit which accesses an internal or external storing device; an acquiring unit which acquires an access ID of the contents from the read contents or the data carrier when the script includes an access instruction description which instructs access to a specific storing region in the storing device: and a determining unit which determines whether the access to the specific storing region is permitted or not, on the basis of the acquired access ID.

Abstract: An apparatus and method for processing a Web page is disclosed. A Web processing unit receives a first Web page from a Web server and displays the first Web page on a screen. The Web processing unit acquires a communication program identified by the first Web page. An external state is monitored and thereby operation information responsive to the external state is generated. The Web processing unit executes the communication program to change the first Web page displayed on the screen to a second Web page according to the operation information.

Abstract: In a microprocessor, a program key for decrypting a program and a data key for encrypting/decrypting data processed by the program are handled as cryptographically inseparable pair inside the microprocessor, so that it becomes possible for the microprocessor to protect processes that actually execute the program, without an intervention of the operating system, and it becomes possible to conceal secret information of the program not only from the other user program but also from the operating system.

Abstract: Whether a combination method defined in an output rule satisfies a combination condition of each content specified in a play list is judged in order of priority defined in a priority list. Based on the judgment result, the output rule is edited in such a manner that the combination condition of each content specified in the play list is satisfied. The resources of the combination target contents specified in the play list are combined in accordance with the combination method of the edited output rule.

Abstract: In the method for sharing encrypted data region among two or more processes on a tamper resistant processor, one process creates the encrypted data region to be shared according to the common key generated as a result of the safe key exchange, and the other process maps that region to its own address space or process space. The address information of the shared encrypted data region and the common key of each process are set in relation in the encrypted attribute register inside the tamper resistant processor, so that it is possible to share the encrypted data region safely.

Abstract: According to an aspect of the present invention, there is provided with a device control system including: an acquiring unit which acquires a BML document which can be delivered in digital broadcasting; a BML interpreting unit which interprets a description described in the BML document, for controlling an external device; and a communication unit which communicates with the external device on the basis of a result of interpretation by the BML interpreting unit.

Abstract: There is provided with a bridging device that is connected to a first and a second network, including: a connection detecting unit that detects an appliance on the second network; a state holding unit that holds either a first or a second state; an arbitration unit that determines that the detected appliance is subjected to bridging processing in a case where the second state is held by the state holding unit, and, determines whether the detected appliance is subjected to the bridging processing on the basis of a predetermined confirmation condition where the first state is held by the state holding unit and, in a case where it is determined that the appliance is subjected to the bridging processing, sets the state holding unit in the second state; and a bridging unit that subjects the appliance, which is determined to be subjected to the bridging processing, to the bridging processing.

Abstract: An imaging distribution apparatus includes a reception unit configured to receive a distribution request for distribution of a specific program from a client apparatus via a network, a program scenario acquisition unit configured to acquire a program scenario corresponding to the specific program requested for by the distribution request, a content acquisition unit configured to acquire a plurality of information contents based on the program scenario, a conversion unit configured to convert the information contents to image scene based on the program scenario, an encoding unit configured to encode the image scene, to generate a stream, and a stream distribution unit configured to distribute the stream to the client apparatus via the network.

Abstract: An information reproducing apparatus includes: a content storage configured to store content which includes a plurality of resources and a utilization condition of the resources; a scenario storage configured to store a scenario which includes output rules each defining a way of combining one or more resources selected from the plurality of resources and a play list defining an order of reading the output rules; a reading out unit configured to read out the scenario and the content from the storages; a condition processing unit configured to perform processing for satisfying the utilization condition in the content; and an information combining unit configured to read the output rules in the order specified by the play list, combine the one or more resources according to respective one of the output rules and output combined resources for the respective one of the output rules.

Abstract: A communication method includes; generating identification information for identifying each of detected appliances on a second network; classifying the generated identification information; publishing for a terminal device on a first network a list of the identification information; upon receipt of a request for call connection with identification information on the published list from the terminal device on the first network, establishing call connection with the terminal device; and mediating communication between the terminal device and an appliance on the second network assigned the identification information.

Abstract: The other communication devices are prohibited to transmit the address initialization request for a prescribed period of time since one communication device transmitted the address initialization request for an address managed by a control protocol, so that the conflict of the initialization requests for the same address will not occur and the problem of assigning the address in overlap to the communication devices will not arise. Also, the other communication devices are prohibited to transmit the address server detection request packet for a prescribed period of time since one communication device transmitted the address server detection request packet, so that the conflict on the network by a plurality of address server detection requests will not occur, and it is possible to determine the MAC address server uniquely.

Abstract: A video player reads, from a recording medium storing video data and control data, the control data which includes a plurality of operation control methods for a control target apparatus, each operation control method being set for one of a plurality of playback controls including a normal playback control and a special playback control, detects one of the playback controls which is requires, to obtain a detected playback control, plays back the video data in the recording medium in accordance with a playback control method corresponding to the detected playback control, and controls operation of the control target apparatus in accordance with one of the operation control methods in the control data which corresponds to the detected playback control.

Abstract: A communication scheme assigns address and determines the setting of address servers. In this scheme other communication devices are prohibited to transmit an address initialization request for a prescribed period of time since one communication device transmitted the address initialization request for an address managed by a control protocol, so that conflict of the initialization requests for the same address will not occur and the problem of assigning the address in overlap to the communication devices will not arise. Also, other communication devices are prohibited to transmit an address server detection request packet for a prescribed period of time since one communication device transmitted the address server detection request packet, so that the conflict on the network by a plurality of address server detection requests will not occur, and it is possible to determine the MAC address server uniquely.

Abstract: A program verification apparatus includes a storing which stores a plurality of statements in correspondence with values of respective risk levels of the statements. Referring to a signature included in a signed module, a value indicating a risk level of the signed module is obtained. A to-be-verified program including a plurality of statements or signed modules is input to the apparatus. Values of first risk levels of the statements included in the to-be-verified program are determined by referring to the storing device. Values of second risk levels of the signed modules included in the to-be-verified program are also determined. Then, a maximum value of a risk level of the to-be-verified program is calculated from the values of the first risk levels and the values of the second risk levels. A verification result including the maximum value of the risk level is outputted accordingly.

Abstract: A content distribution arbitration apparatus is built in a LAN connected to a plurality of content receivers receiving a content transmitted in multicast from a content distribution server through a network, and includes a first memory to store constraint information indicating the number of channels capable of receiving contents simultaneously in the LAN and a communication band, a second memory to store connection information indicating a distribution channel used by each of the content receivers which receives a content, a message receiver to receive a message for requesting distribution of content by a desired distribution channel, and a controller to determine whether the message is accepted based on request of the message, the constraint information and the connection information.

Abstract: Under a multi-task environment, a tamper resistant microprocessor saves a context information for one program whose execution is to be interrupted, where the context information contains information indicating an execution state of that one program and the execution code encryption key of that one program. An execution of that one program can be restarted by recovering the execution state of that one program from the saved context information. The context information can be encrypted by using the public key of the microprocessor, and then decrypted by using the secret key of the microprocessor.

Abstract: In the method for sharing encrypted data region among two or more processes on a tamper resistant processor, one process creates the encrypted data region to be shared according to the common key generated as a result of the safe key exchange, and the other process maps that region to its own address space or process space. The address information of the shared encrypted data region and the common key of each process are set in relation in the encrypted attribute register inside the tamper resistant processor, so that it is possible to share the encrypted data region safely.

Abstract: There is provided with a video reproducing apparatus, including: an access unit configured to access a storage medium holding a plurality of video scenes; an external device search unit configured to search for an external device which can communicate; a scene selecting unit configured to select a video scene from the storage medium based on information of the external device found by the external device search unit; and a video reproducing unit configured to read the selected video scene from the storage medium using the access unit and reproduce the video scene.