发明授权
- 专利标题： Video/audio compressing device and reproducing device capable of preventing deterioration of video with synchronization between video and audio
- 专利标题（中）： 视频/音频压缩装置和再现装置，能够防止视频与视频同步的视频恶化
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申请号： US289586申请日： 1994-08-15
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公开(公告)号： US5565996A公开(公告)日： 1996-10-15
- 发明人: Hiroaki Ueda
- 申请人： Hiroaki Ueda
- 申请人地址： JPX Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX5-201541 19930813
- 主分类号： H04N5/781
- IPC分类号： H04N5/781 ; H04N7/46 ; H04N7/52 ; H04N9/804 ; H04N9/79
摘要：
In video/audio compression, a video signal is separated into luminance and a color difference. The color difference is partially subsampled. An interframe difference is compression-coded by an encoding unit. At that time, particular subsampling information corresponding to a designated reproducing rate is extracted from subsampling information. The particular subsampling information is inserted into compressed video data. On the other hand, in video/audio reproduction, the color difference of the video, which has partially been subsampled, are interpolated by a decoding unit with reference to the subsampling information inserted into the compressed video data.