Television – Bandwidth reduction system – Data rate reduction
Patent
1996-11-27
1999-01-12
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348410, 348411, 348412, 348413, 348699, 348700, H04N 718
Patent
active
058596682
ABSTRACT:
A moving image coder has a forward predicting motion vector/prediction error amount detecting section for detecting an optimum motion vector from a past frame, making a predicted image and calculating a prediction error amount from the present frame. The coder also has a backward predicting motion vector/prediction error amount detecting section for detecting an optimum motion vector from a future frame, making a predicted image and calculating a prediction error amount from the present frame. The coder further has a comparator/mode selecting section for inputting the prediction error amounts from the forward predicting motion vector/prediction error amount detecting section and the backward prediction motion vector/prediction error amount detecting section, making a comparative calculation of the input prediction error amounts, and selecting one of a forward prediction mode, a backward prediction mode and a bidirectional prediction mode.
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Aono Tomoko
Fujiwara Yoichi
Katata Hiroyuki
Kusao Hiroshi
Miyake Toshiyuki
Chin Tommy P.
Rao Anand S.
Sharp Kabushiki Kaisha
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