Sony Corporation

Sony United Kingdom Limited

Other

Sony Corpration

Katsumi Tahara

Yoshihiro Murakami

Yoichi Yagasaki

Takuya Kitamura

Mikita Yasuda

Shinji Negishi

Kanji Mihara

Yasushi Fujinami

Jun Yonemitsu

Motoki Kato

Hideki Koyanagi

Hiromi Yoshinari

Noriaki Oishi

Teruhiko Suzuki

James Hedley Wilkinson

Eisaburo Itakura

Mamoru Ueda

Hiroaki Seto

Yasuo Iwasaki

Tsuyoshi Oda

Tomoyuki Sato

Tetsuya Iwamoto

Nobuhisa Obikane

Yoichi Matsumura

Naofumi Yanagihara

Hiroshi Nakano

Masatoshi Takashima

Hiroshi Meguro

Yoshiaki Shibata

Takumi Yoshida

Hitoshi Sakamoto

Eiji Ogura

Ching-Fang Chang

Daisuke Hiranaka

Toru Okazaki

Youichi Matsumura

Tohru Wada

Tak Yen Tong

Seiichi Emoto

Atsushi Yamato

The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at a past encoding process as a history information, and performs a present encoding process by using the past encoding parameters selectively so that the present encoding process is optimized. Furthermore, the encoder describe the past encoding parameters into the encoded bitstream as the history information so as to reuse the history information in advance encoding process. The picture quality of the video data does not deteriorate even if decoding and encoding processes are carried out repeatedly by the transcoder.

Transcoding system using encoding history information

Encoding parameters of picture and higher layers of importance to a number of applications, and encoding parameters of slice and lower layers of no importance to all applications are converted into auxiliary packets inserted respectively into a V-blanking area and an H-blanking area of a video-data signal output by a history-information-multiplexing apparatus employed in a video-decoding system. On the other hand, a video-encoding system extracts back the auxiliary packets superposed on the V-blanking area and the H-blanking area from an input base-band video signal. As a result, a technique of superposing information on data can be changed in accordance with the importance of the information and required information can be fetched with ease.

Information processing apparatus, information processing method and recording medium

The present invention relates to an encoding system for encoding input video data and a multiplexing system for multiplexing a plurality of encoded streams. More particularly, it proposes a system and method that involve describing, in encoded streams, information on the picture order of input video data, and using the picture order information when generating packetized elementary stream (PES) packets, to prevent delays associated with the PES packet generation. MPEG encoders generate PTS_count and DTS_count based on the information obtained from the number of fields in the input video data and describe the PTS_count and DTS_count data as picture order information in encoded streams. The packetizers for generating packetized elementary stream take out PTS_count and DTS_count described in the encoded streams, generate presentation time stamps and decoding time stamps based on PTS_count and DTS_count, and add these time stamps as PES header data.

Encoding system and method, decoding system and method, multiplexing apparatus and method, and display system and method

A picture type identifier, indicating one of intra-picture coding (an I-picture), forward or backward predictive coding (a P-picture) and bi-directionally predictive coding (a B-picture), is included with a picture signal when the signal is encoded and when the signal is decoded. Each of initial and subsequent encoding and decoding is a function of the included picture type.

Picture signal transmitting method and apparatus

A UMID extracting/embedding unitextracts UMID data embedded in material data. A CPUupdates a generation indicated by generation data in the extracted UMID data to generate new generation data when processing accompanied by a deterioration of quality is applied to the material data such as recording to a database. The UMID extracting/embedding unitembeds the new generation data in the material data.

Data processing apparatus, method, and program

Growing community of inventors

Kanagawa, Japan

Katsumi Tahara