Abstract: An encoding apparatus according to an embodiment includes a specifying unit, a first encoder and a second encoder. The specifying unit specifies a first original image signal included in an original image signal. The first encoder generates base image encoded data obtained by encoding the first original image signal by inter-frame prediction using a reference image signal. The second encoder generates standard encoded data obtained by encoding a second original image signal serving as the original image signal other than the first original image signal by the inter-frame prediction based on the base image encoded data.

Abstract: According to an embodiment, a reproduction device includes an acquirer, a decoder, and a synthesizer. The acquirer is configured to acquire transmission information including first and second coded data. The first and second coded data are generated by encoding first and second image data, respectively. At least one of the first and the second image data is lossy encoded. The first and second image data being generated by performing conversion processes different from each other on original image data. The decoder is configured to decode the first and second coded data to generate first and second decoded data. The synthesizer is configured to synthesize the first and the second decoded data with adjusting pixel positions of the first and the second decoded data so that the pixel positions of the first and the second decoded data are identical to each other to generate reproduction image data.

Abstract: According to an embodiment, a content reproducing apparatus includes a determination unit, a decision unit, an acquisition unit and a reproducing unit. The determination unit determines a reproduction condition for first content scheduled to be reproduced. The decision unit decides first acquisition information for acquiring the first content based on the reproduction condition. The acquisition unit acquires the first content using the first acquisition information. The reproducing unit reproduces the first content.

Abstract: According to an embodiment, an encoding device includes a storage controller, a difference generator, and a communication controller. The storage controller is configured to store a base stream in a storage. The base stream serves as basis for encoding and decoding and is shared with a decoding device. The difference generator is configured to generate a difference bit stream that represents difference between an input bit stream that has been input and the base stream. The communication controller is configured to control a communicating unit to transmit the difference bit 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: According to an embodiment, an image encoding apparatus includes a background control information generator, a background image generator, and an image encoder. The background control information generator generates background control information based on an input image. The background control information is used for generating a first background image from at least one first image. The background image generator generates the first background image, based on the background control information and at least one first image. The image encoder encodes the input image using the first background image to generate encoded data.

Abstract: According to an embodiment, a content reproducing apparatus includes a determination unit, a decision unit, an acquisition unit and a reproducing unit. The determination unit determines a reproduction condition for first content scheduled to be reproduced. The decision unit decides first acquisition information for acquiring the first content based on the reproduction condition. The acquisition unit acquires the first content using the first acquisition information. The reproducing unit reproduces the first content.

Abstract: According to an embodiment, a reproduction device includes an acquirer, a decoder, and a synthesizer. The acquirer is configured to acquire transmission information including first and second coded data. The first and second coded data are generated by encoding first and second image data, respectively. At least one of the first and the second image data is lossy encoded. The first and second image data being generated by performing conversion processes different from each other on original image data. The decoder is configured to decode the first and second coded data to generate first and second decoded data. The synthesizer is configured to synthesize the first and the second decoded data with adjusting pixel positions of the first and the second decoded data so that the pixel positions of the first and the second decoded data are identical to each other to generate reproduction image data.

Abstract: According to an embodiment, an encoding device includes an encoder. The encoder is configured to generate a video stream. The video stream includes at least a first image group including a plurality of images encoded at a first bit rate and a second image group including a plurality of images. The first image group includes an intra-coded image. The plurality of images of the second image group are associated with the intra-coded image serving as a reference image to decode an inter-coded image, and are encoded at a second bit rate different from the first bit rate and having reproduction timing in synchronization with the plurality of images of the first image group.

Abstract: A reproduction system according to an embodiment includes a communicator which communicates information including an encoded data and a processor. The processor is configured to select the encoded data to be delivered, send a request an external delivery device to deliver a third encoded data until a starting time of following segment included in a second encoded data via the communicator when the second encoded data is selected to be delivered following to a first encoded data, and decode the encoded data received by the communicator. The second encoded data and the third encoded data are generated by encoding a first content.

Abstract: According to an embodiment, a video compression apparatus includes a first compressor, a second compressor, a partitioner and a communicator. The first compressor compresses a first video to generate a first bitstream. The second compressor sets regions in a second video and compresses the regions so as to enable each region to be independently decoded, to generate a second bitstream. The partitioner partitions the second bitstream according to the set regions to obtain a partitioned second bitstream. The communicator receives region information indicating a specific region that corresponds to one or more regions and selects and transmits a bitstream corresponding to the specific region from the partitioned second bitstream.

Abstract: According to one embodiment, a reception processing device receives and stores a data packet and a quality enhancement packet. The device includes a third storage unit that stores association between the quality enhancement packet stored in a second storage unit and the data packet stored in a first storage unit, and a fourth storage unit that stores, at each quality enhancement processing, a processing state representing at least one of an interim result and a final result in the quality enhancement processing. The device performs the quality enhancement processing using redundant data included in the quality enhancement packet and the data packet identified by the association and associated with the quality enhancement packet, stores, in the fourth storage unit, the processing state representing the interim result of the operation when interrupting the quality enhancement processing, and resumes the quality enhancement processing by using the processing state.

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: 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: According to one embodiment, a communication apparatus communicates with a first device including a first data file via a network. The communication apparatus includes an indication unit and a request sending unit. The indication unit indicates a first data sending request to send first data from a first position as a start position of the first data file toward a second position as an end position of the first data file. Furthermore, the indication unit indicates a second data sending request to send second data from the second position toward the first position in the first data file. The request sending unit sends the first data sending request and the second data sending request to the first device.

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: According to an embodiment, a content reproducing apparatus includes a determination unit, a decision unit, an acquisition unit and a reproducing unit. The determination unit determines a reproduction condition for first content scheduled to be reproduced. The decision unit decides first acquisition information for acquiring the first content based on the reproduction condition. The acquisition unit acquires the first content using the first acquisition information. The reproducing unit reproduces the first content.

Abstract: In general, according to one embodiment, a communication device conducts connection type data communications. The device includes an application configured to supply or request data by using a connection. The device also includes a termination unit that receives a request of terminating the data communications, and reports, to the application, termination of the connection without terminating the connection.

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: 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.