发明授权
US4916542A Picture quality adjusting circuit with fir filter for digital processing
失效
图像质量调整电路，具有数字处理的冷杉滤波器
- 专利标题： Picture quality adjusting circuit with fir filter for digital processing
- 专利标题（中）： 图像质量调整电路，具有数字处理的冷杉滤波器
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申请号： US313899申请日： 1989-02-23
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公开(公告)号： US4916542A公开(公告)日： 1990-04-10
- 发明人: Minoru Yoneda , Akihiko Enomoto , Takashi Koga , Hiroshi Kobata
- 申请人： Minoru Yoneda , Akihiko Enomoto , Takashi Koga , Hiroshi Kobata
- 申请人地址： JPX Kawasaki
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JPX Kawasaki
- 优先权： JPX63-44261 19880229
- 主分类号： H04N5/208
- IPC分类号： H04N5/208 ; H04N5/14 ; H04N5/21
摘要：
A circuit for adjusting a picture quality by processing a digital video signal. A digital filter receives the digital video signal and extracts a high-frequency component therefrom. A first waveform-shaping element wave-shapes the high-frequency component to provide a noise cancel signal for canceling the noise. A second waveform-shaping element wave-shapes the high-frequency component to provide a contour compensation signal for compensating a contour of a picture. An adder adds the digital video signal, the noise cancel signal and the contour compensation signal to provide a signal with adjusted picture quality.
公开/授权文献
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