05812194 is referenced by 69 patents and cites 5 patents.

A motion compensated video processing method includes encoding a video frame group I.sub.0 -I.sub.7 into one in which one frame I.sub.0 of the group is a basic input frame or `I `frame, and the other frames B.sub.1 -B.sub.7 are derived from calculating the difference between a current frame and two neighbouring frames so as to form `B ` frames. The `B ` frames are derived in a logarithmic progression. The `B ` frames are quantized by applying selective quantization weighting to predetermined input frames. Encoding can be of the forms described as open loop or closed loop, preferably open loop. Decoding can be achieved by applying inverse quantization weighting to the input frames prior to selective summnation in order to achieve a constant reconstruction error for each frame even though quantization errors carry over from each reconstruction stage.

Title
Motion compensated video processing
Application Number
658592
Publication Number
5812194
Application Date
June 17, 1997
Publication Date
September 22, 1998
Inventor
James Hedley Wilkinson
Tadley
GB
Agent
Frommer Lawrence & Haug
Agent
William S Frommer
Assignee
Sony United Kingdom
GB
Sony Corporation
JP
IPC
H04N 11/04
H04N 11/02
H04N 7/11
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