发明申请
US20060067530A1 Recording/playback system for medium compliant to copy control
有权
录音/播放系统,适合中档兼容复制控制
- 专利标题: Recording/playback system for medium compliant to copy control
- 专利标题(中): 录音/播放系统,适合中档兼容复制控制
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申请号: US11236725申请日: 2005-09-28
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公开(公告)号: US20060067530A1公开(公告)日: 2006-03-30
- 发明人: Takaharu Noguchi , Akira Shibata , Hitoaki Owashi
- 申请人: Takaharu Noguchi , Akira Shibata , Hitoaki Owashi
- 优先权: JP2004-285636 20040930
- 主分类号: H04N7/167
- IPC分类号: H04N7/167
摘要:
By introducing a new copy control system into video signals subjected to picture quality restriction satisfactory only in small-sized PMP displays, a new business model in which copyrighters, consumers and makers can have mutual prosperity is created. “A new copy control rule of prohibiting a video signal output with a picture quality equivalent to that at time of recording from being copied, but permitting a video signal sufficiently degraded in picture quality as compared with time of recording to be copied” is added to the copy-never, copy-one-generation, and copy-free states belonging to the conventional copy control rule. The quality for which the copyrighter can permit copying corresponds to half the current number of DVD pixels. If a quality restricting scheme of thinning out pixels to half compared with time of recording is used, therefore, needs of consumers desiring to enjoy PMPs are satisfied while protecting rights of copyrighters.