Sony Corporation

Keisuke Aoki

Hideki Nabesako

Masatoshi Takashima

Daisuke Hiranaka

Yoshihiro Ishida

Hideyuki Narita

Hirofumi Morimoto

Provided is an encoding/transmitting apparatus used to transmit moving-picture data from a transmitting side to a receiving side and to subject the moving-picture data to streaming in the receiving side. The apparatus has an external-output request determining unit that monitors a state of a network. If the network assumes an undesirable state, a multiplex output unit stops multiplexing data. When the network assumes a good state, the multiplex output unit starts multiplexing the data again. A video encoding unit and an audio encoding unit keep encoding data, whether the multiplex output unit is multiplexing data or not. When the area occupied by encoded data in an encoded-video-data storage unit and the area occupied by encoded data in an encoded-audio-data storage unit exceed a predetermined value, the video encoding unit and audio encoding unit stop encoding data, and wait until the area occupied by encoded data sufficiently decreases.

Encoding/transmitting apparatus and encoding/transmitting method

This invention relates to an encoding/transmitting apparatus that is used to transmit moving-picture data from a transmitting side to a receiving side through a transmission path and to subject the moving-picture data to streaming in the receiving side. The apparatus has an external-output request determining unit () that monitors the state of a network. If the network assumes an undesirable state, the unit () causes a multiplex output unit () to stop multiplexing data. When the network assumes a good state, the unit () starts multiplexing the data again. A video encoding unit () and an audio encoding unit () keep encoding data, whether the multiplex output unit () is multiplexing data or not. When the area occupied by encoded data in an encoded-video-data storage unit () and the area occupied by encoded data in an encoded-audio-data storage unit () exceed a predetermined value, the units () and () stop encoding data, and wait until the area occupied by encoded data sufficiently decreases.

An encoding/transmitting apparatus that is used to transmit moving-picture data from a transmitting side to a receiving side through a transmission path and to subject the moving-picture data to streaming in the receiving side has an external-output request determining unit that monitors the state of a network. If the network assumes an undesirable state, the request determining unit causes a multiplex output unit to stop multiplexing data. When the network assumes a desirable state, the multiplex unit starts multiplexing the data again. A video encoding unit and an audio encoding unit keep encoding data, whether the multiplex output unit is multiplexing data or not. When the area occupied by encoded data in an encoded-video-data storage unit and the area occupied by encoded data in an encoded-audio-data storage unit exceed a predetermined value, the encoding units stop encoding data, and wait until the area occupied by encoded data sufficiently decreases.

A multiplexing system () is provided which includes a plurality of encoders (-) which generates elementary streams, respectively, CPU (), multiplexer (), instruction memory (), and a data memory () which stores a plurality of elementary data to be multiplexed. Each of the encoders (-) divides elementary data into units, and stores the data into the data memory (). The CPU () generates, for each of the data units, instruction data having stated therein a storage location in the data memory () and stores the instruction data into the instruction memory (). The multiplexer () reads the instruction data one by one from the instruction memory (), and reads data units stated in the instruction data sequentially from the data memory (), for generation of a multiplexed stream. Thus, the burden of processing to the controller can be lessened.

Multiplexing apparatus and method

A decoding system () is provided in which a memory transfer block () stores an input transport stream into a memory () and the top address of each TS packet into an address memory (), a CPU () refers to information stored in the address memory () to access each packet in a memory () and analyze header information in the packet, the CPU () generates a transfer instruction to transfer data from the memory () to a decoder (or) for each access unit (one frame, for example) and supplies it to a DMA circuit (or), and the DMA circuit (or) reads the data from the memory () and transfers it to the decoder (or) according to the transfer instruction supplied from the CPU ().

Data distribution apparatus and method

A data transmission method able to maintain the quality of a transmitted image substantially same as that of one's own image and an apparatus using the method and a data transmission system, transmitting image data accommodated in a frame of a preset frame during communication between terminals, comprising capturing an image including a target image to be transmitted, making adjustments so that the target image to be transmitted from the obtained image substantially fully fills the image frame, and compressing and transmitting the adjusted image data in the image frame.

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Tokyo, Japan

Keisuke Aoki