04307420 is referenced by 65 patents and cites 13 patents.

An interframe coding system provided for highly efficient transmission of coded television picture signal is improved by compensating prediction error of predicted picture motion in response to interframe correlation detected by shifting moving blocks in a direction opposite to a motion vector detected for predicting interframe picture motion in order to reduce an amount of coded signals to be transmitted, and further improved regarding the detection of motion vector by examining interframe correlation referred to accumulated logarithms of absolute values of interframe differential picture element signals, and still further improved regarding the compensation of predicted picture motion by changing a coding threshold level in response to picture motion and further by effecting more exact secondary prediction of picture motion. According to these improvements, an extremely high efficiency of transmission of precisely and correctly coded interframe picture signal can be attained.

Title
Motion-compensated interframe coding system
Application Number
6/155786
Publication Number
4307420
Application Date
June 2, 1980
Publication Date
December 22, 1981
Inventor
Yoshimichi Ohtsuka
Kawasaki
JP
Yuichi Ninomiya
Kawasaki
JP
Agent
Stevens Davis Miller & Mosher
Assignee
Nippon Hoso Kyokai
JP
IPC
H04M 7/12
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