发明名称 |
MOTION VIDEO COMPRESSION SYSTEM WITH INVERSE DISCRETE COSINE TRANSFORM MISMATCH CONTROL |
摘要 |
A novel method and apparatus is disclosed for controlling inverse discrete cosine transform ("IDCT") mismatch between an encoder and decoder using different IDCT implementations under all coding conditions. Synchronization between the encoder and decoder is forced by selectively setting certain small DCT coefficients, which are prone to mismatch, to zero at the encoder. Advantageously, the invention may be implemented solely in the encoder to minimize system complexity and cost, and allow for IDCTmismatch control utilizing conventional decoders. |
申请公布号 |
CA2145105(A1) |
申请公布日期 |
1995.09.22 |
申请号 |
CA19952145105 |
申请日期 |
1995.03.21 |
申请人 |
AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
发明人 |
HASKELL, BARIN G.;YAN, LI |
分类号 |
G06F17/14;G06T9/00;H03M7/30;H04N1/41;H04N7/26;H04N7/30;H04N7/50;(IPC1-7):H04N7/50 |
主分类号 |
G06F17/14 |
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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