发明名称 |
PICTURE CODING APPARATUS |
摘要 |
In the invention, a coding controller takes a buffer occupancy at present from a transmission buffer, and first normalized value evaluating means outputs a first normalized value being independent of a video rate and a frame rate for the number of bits per n x QB and second normalized value evaluating means outputs a second normalized value for the number of bits per one frame. When the number of bits is relatively small, a second quantization characteristics control table is selected in a selector and the coding control every frame is performed. When the number of bits is large, a first quantization characteristics control table is selected in the selector and the control every n x QB is performed instead of the control every frame and the quantization characteristics control signal is outputted. |
申请公布号 |
EP0427108(A3) |
申请公布日期 |
1993.03.03 |
申请号 |
EP19900120901 |
申请日期 |
1990.10.31 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
MURAKAMI, TOKUMICHI, C/O MITSUBISHI DENKI K. K.;MATSUZAKI, KAZUHIRO, C/O MITSUBISHI DENKI K. K. |
分类号 |
G06T9/00;H04N7/36;H04N7/46 |
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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