发明授权
- 专利标题： Television signal digitizing method dividing progressive-scanned signal into two complementary interlace signals
- 专利标题（中）： 电视信号数字化方法将逐行扫描信号分为两个互补交错信号
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申请号： US184230申请日： 1994-01-19
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公开(公告)号： US5457498A公开(公告)日： 1995-10-10
- 发明人: Akihiro Hori , Tadao Kurosaki , Masakatsu Tanaka
- 申请人： Akihiro Hori , Tadao Kurosaki , Masakatsu Tanaka
- 申请人地址： JPX Tokyo
- 专利权人： Nippon Television Network Corporation
- 当前专利权人： Nippon Television Network Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX5-181091 19930722
- 主分类号： H04N9/77
- IPC分类号： H04N9/77 ; H04N9/804 ; H04N9/808 ; H04N11/02 ; H04N11/04 ; H04N7/01
摘要：
A television signal digitizing method reduces the quantity of information without deterioration of image quality when digitizing progressive-scanned signals. The method uses a step of dividing a progressive-scanned information into two complementary interlaces, that is, an interlace 1 and an interlace 2; a step of converting luminance information in the interlace 1 to digital information whose sampling frequency is X; a step of converting chrominance information in the interlace 1 to digital information whose sampling frequency is Y; and a step of generating supplementary information.