发明公开
- 专利标题： METHOD AND DEVICE FOR TRANSCODING VIDEO SIGNALS
- 专利标题（中）： 用于转换视频信号的方法和设备
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申请号： EP96900398.0申请日： 1996-01-25
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公开(公告)号： EP0755610A1公开(公告)日： 1997-01-29
- 发明人: KEESMAN, Gerrit, Johan , VAN OTTERLOO, Petrus, Johannes
- 申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
- 申请人地址： Groenewoudseweg 1 5621 BA Eindhoven NL
- 专利权人： PHILIPS ELECTRONICS N.V.,PHILIPS NORDEN AB
- 当前专利权人： PHILIPS ELECTRONICS N.V.,PHILIPS NORDEN AB
- 当前专利权人地址： Groenewoudseweg 1 5621 BA Eindhoven NL
- 代理机构： Landousy, Christian, et al
- 优先权： EP19950400325 19950215
- 国际公布： WO1996025823 19960822
- 主分类号： H03M7
- IPC分类号： H03M7 ; H04N7
摘要：
A method of transcoding coded video signals and a corresponding device for implementing this method are described. The device comprises a decoding and encoding sub-assemblies (201, 202) and, within said encoding sub-assembly, quantizing means (23) and bitrate control means. This bitrate control means comprises, before said quantizing means (23), means for computing a local target value for encoding each sub-picture of the images to which video signals correspond and means for controlling the step size during the quantizing step.
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