发明名称 |
Picture signal encoding and decoding apparatus. |
摘要 |
<p>A picture signal encoding and decoding apparatus which transmits a digital picture signal by encoding, and receives and decodes an incoming encoded signal comprises a configuration in which a condition not to make a receiving buffer overflow can be controlled on the transmitting side, and a plurality of quantizers are prepared and a proper quantizing characteristic is selected and used according to the sequence of transformed coefficients and the size of a motion vector. Therefore, it is not necessary to prepare a receiving buffer of a large capacity or a high speed decoding circuit, so that the apparatus can be manufactured at a low cost and the stability of operation is improved and also a signal can be compressed efficiently owing to the realization of quantization corresponding to a statistical characteristic of an input signal.</p> |
申请公布号 |
EP0382892(A1) |
申请公布日期 |
1990.08.22 |
申请号 |
EP19890118509 |
申请日期 |
1989.10.05 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
ASAI, KOHTARO C/O MITSUBISHI DENKI K.K.;MURAKAMI, TOKUMICHI C/O MITSUBISHI DENKI K.K.;MATSUZAKI, KAZUHIRO C/O MITSUBISHI DENKI K.K. |
分类号 |
G06T9/00;H04N7/24;H04N7/26;H04N7/30;H04N7/32;H04N7/50 |
主分类号 |
G06T9/00 |
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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