发明名称 |
Video coding and decoding apparatus including corresponding nonlinear compression and expansion of a motion compensation error signal |
摘要 |
A video coding apparatus includes a motion compensation circuit for motion-compensating a picture signal in a frame previous to a frame of video signals input for each frame, and generating a motion compensation picture signal, a nonlinear processing circuit for compressing a motion compensation error signal representing an error between each of the input video signal and the motion compensation picture signal at a compression rate which rises as the error increases, and outputting a motion compensation error signal, and a coding circuit for orthogonally transforming the motion compensation error signal output from the nonlinear difference circuit, quantizing the orthogonally-transformed signal, and coding the quantized signal.
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申请公布号 |
US5734431(A) |
申请公布日期 |
1998.03.31 |
申请号 |
US19960633695 |
申请日期 |
1996.04.19 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
DACHIKU, KENSHI;YAMAGUCHI, NOBORU;WATANABE, TOSHIAKI |
分类号 |
H04N7/32;H03M7/36;H04N7/26;H04N7/36;H04N7/50;(IPC1-7):H04N7/12;H04N11/02;H04N11/04 |
主分类号 |
H04N7/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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