发明授权
US06429899B1 Video display apparatus with scan conversion and reversion and a video display method using scan conversion and reversion
失效
具有扫描转换和反转的视频显示装置和使用扫描转换和反转的视频显示方法
- 专利标题： Video display apparatus with scan conversion and reversion and a video display method using scan conversion and reversion
- 专利标题（中）： 具有扫描转换和反转的视频显示装置和使用扫描转换和反转的视频显示方法
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申请号： US09351847申请日： 1999-07-13
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公开(公告)号： US06429899B1公开(公告)日： 2002-08-06
- 发明人: Yutaka Nio , Naoji Okumura , Katsumi Terai , Kazuto Tanaka , Satoshi Okamoto , Masaaki Fujita , Minoru Miyata
- 申请人： Yutaka Nio , Naoji Okumura , Katsumi Terai , Kazuto Tanaka , Satoshi Okamoto , Masaaki Fujita , Minoru Miyata
- 优先权： JP10-201591 19980716
- 主分类号： H04N1100
- IPC分类号： H04N1100
摘要：
A video signal of an interlaced scanning system having 525 scanning lines and a vertical scanning frequency of 60 Hz is converted to a video signal having 1050 scanning lines and a vertical scanning frequency of 120 Hz, for displaying an image by bidirectional scanning. A vertical synchronizing signal is subjected to offset processing by a ¼ horizontal scanning period when an odd field is started, thereby keeping interlaced relation between odd and even fields. The vertical synchronizing signal is subjected to offset processing by a ½ horizontal scanning period every frame, so that the scanning direction for each scanning line is reversed every frame.
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