Abstract: There is provided with an FEC transmission processing apparatus including: a media packet acquiring unit configured to successively acquire media packets from a media packet generator; a media packet transmission unit configured to transmit the media packets acquired to a media packet reception processing apparatus; an FEC packet generation unit configured to generate a plurality of FEC packets for the media packet reception processing apparatus to recover a lost media packet by carrying out FEC calculation processing using media packets acquired within a predetermined FEC period from acquisition of a first acquired media packet after media packets subjected to the FEC calculation processing immediately before; and an FEC packet transmission unit configured to transmit the FEC packets to the media packet reception processing apparatus within the predetermined FEC period after a lapse of the predetermined FEC period from the acquisition of the first acquired media packet.

Abstract: According to one embodiment, a receiving apparatus includes a data packet receiver, a quality reinforcement packet receiver, an information setting module, a packet processor, a recovery processor. The data packet receiver is configured to receive a data packet comprising a data portion. The quality reinforcement packet receiver is configured to receive a quality reinforcement packet comprising a quality reinforcement portion. The information setting module is configured to set the data portion corresponding to a part of information included in the data packet as a recovery process target. The packet processor is configured to determine whether there is a lost data packet based on the received data packet and the quality reinforcement packet.

Abstract: An access authorizing apparatus includes a receiving unit, a first transmitting/receiving unit, a token issuer and a transmitting unit. A receiving unit receives first approval information indicating that access to the resource in the device has been approved by an access approver, from the first application via the network. A first transmitting/receiving unit transmits an access approval request including the first approval information to the access approving apparatus, and receives access enable/disable information indicating whether the access to the resource by the first application is permitted, from the access approving apparatus. A token issuer, when the access enable/disable information indicates that the access to the resource is permitted, issues token information that gives authority to access the resource to the first application. A transmitting unit transmits the token information issued by the token issuer, to the first application.

Abstract: A stream transmitting system for transmitting a data stream, which has first layer including base data and second layer including data supplementing the base data, includes a transmitting device and a receiving device. The transmitting device includes: a transmission control unit for packetizing the data of the first layer and the data of the second layer to output a data packet of the first layer and a data packet of the second layer; first transmitting unit for transmitting the data packet of the first layer to the receiving device through first transmission path; and second transmitting unit for transmitting the data packet of the second layer to the receiving device through second transmission path. The receiving device includes: first receiving units for receiving the data packet transmitted through the first transmission paths; and a reception control unit for reconstructing a hierarchically-encoded data stream.

Abstract: In a transmission side, a layer adjusting unit performs an adjustment to store a scalable encoded video data in a memory, select and output a scalable data of a base quality as a real-time video, read from a memory a scalable data of an enhancement quality based on the designation of a enhancement quality and a transmission period of time, and output the scalable data of an enhancement quality together with a real-time scalable data. In the receiving side, a layer synthesizing unit synthesizes and outputs a real-time video at normal times, and lowers the real-time video to a quality of the base layer if there is an enhancement quality video of a designated period of time, thereby reading the base quality layer data corresponding to the designated video from the memory (153) and synthesizing the data with the enhancement quality video to output the resulting data.

Abstract: A data receiving method according to the present invention includes: storing received packets in a data storing unit; storing, in a data-storage-information storing unit, information indicating data portions are stored; specifying FEC parameters of column FEC packets and row FEC packets; specifying a leading FEC packet using at least SNBase of a first column FEC packet and SNBase of a second column FEC packet or a row FEC packet; specifying an FEC packet group corresponding to a matrix same as a matrix of the leading FEC packet; selecting one FEC packet from the FEC packet group; judging whether restoration processing can be performed by using the selected FEC packet; storing, when a lost data packet is restored, the restored data packet in the data storing unit; and storing, in the data-storage-information storing unit, information indicating that the restored data packet is present.

Abstract: A computer device includes a data packet buffer, an improving quality packet buffer, a correspondence memory, an improving quality processing unit, an operation controller, and a recovered data packet processing unit. The data packet buffer stores data packets of streams. The improving quality packet buffer stores an improving quality packet including a redundant data and identification information. The correspondence memory stores a correspondence between the improving quality packet and the data packets. The improving quality processing unit performs an improving quality processing for recovering the lost data packet by using the redundant data and at least one of the data packets corresponding to the correspondence, in order to obtain a recovered data packet. The operation controller controls the improving quality processing unit to perform the improving quality processing. The recovered data packet processing unit stores the recovered data packet into the data packet buffer.

Abstract: A multiple protocol address register method between a communication terminal and the register server includes transmitting a first register request for requesting to register a first protocol address from the communication terminal to the register server; storing the first protocol address and the identification to the register server; transmitting a response to the first register request from the register server to the communication terminal together with a first communication rule; transmitting the second register request from the communication terminal to the register server on the basis of the first communication rule; storing, when the second register request is created based on the first communication rule, the second protocol address in the register server; and transmitting a response to the second register request from the register server to the communication terminal.

Abstract: A data receiving method according to the present invention includes: storing received packets in a data storing unit; storing, in a data-storage-information storing unit, information indicating data portions are stored; specifying FEC parameters of column FEC packets and row FEC packets; specifying a leading FEC packet using at least SNBase of a first column FEC packet and SNBase of a second column FEC packet or a row FEC packet; specifying an FEC packet group corresponding to a matrix same as a matrix of the leading FEC packet; selecting one FEC packet from the FEC packet group; judging whether restoration processing can be performed by using the selected FEC packet; storing, when a lost data packet is restored, the restored data packet in the data storing unit; and storing, in the data-storage-information storing unit, information indicating that the restored data packet is present.

Abstract: There is provided with an FEC transmission processing apparatus including: a media packet acquiring unit configured to successively acquire media packets from a media packet generator; a media packet transmission unit configured to transmit the media packets acquired to a media packet reception processing apparatus; an FEC packet generation unit configured to generate a plurality of FEC packets for the media packet reception processing apparatus to recover a lost media packet by carrying out FEC calculation processing using media packets acquired within a predetermined FEC period from acquisition of a first acquired media packet after media packets subjected to the FEC calculation processing immediately before; and an FEC packet transmission unit configured to transmit the FEC packets to the media packet reception processing apparatus within the predetermined FEC period after a lapse of the predetermined FEC period from the acquisition of the first acquired media packet.

Abstract: There is provided with a communication method including: attempting to receive a media packet from a network; storing a received media packet in a first buffering unit; receiving an FEC packet including redundant data to recover a lost media packet and information which specifies a plurality of media packets associated with the redundant data; storing a received FEC packet in a second buffering unit; selecting the FEC packet from the second buffering unit; dividing FEC operation processing to be carried out using the redundant data included in selected FEC packet and the media packets related to the redundant data into a plurality of processes and sequentially carrying out each process so that one process is carried out every time the receiving of a media packet is attempted; and inserting a media packet recovered through the FEC operation processing in the first buffering unit.

Abstract: An intermediate server mediates communication between a communication terminal and an authentication server for performing authentication of the communication terminal. The intermediate server includes a communication-request receiving unit that receives a communication request message for requesting the authentication server to start communication from the communication terminal; a communication mediating unit that mediates the communication between the communication terminal and the authentication server in response to the communication request message received; an authentication-state receiving unit that receives an authentication state of the communication terminal from the authentication server; and a judging unit that judges success or failure of the authentication of the communication terminal based on the authentication state received.

Abstract: A multiple protocol address register method between a communication terminal and the register server includes transmitting a first register request for requesting to register a first protocol address from the communication terminal to the register server; storing the first protocol address and the identification to the register server; transmitting a response to the first register request from the register server to the communication terminal together with a first communication rule; transmitting the second register request from the communication terminal to the register server on the basis of the first communication rule; storing, when the second register request is created based on the first communication rule, the second protocol address in the register server; and transmitting a response to the second register request from the register server to the communication terminal.