发明申请
- 专利标题： De-ring system and method for reducing the overshooting and undershooting of video signal in a scaler
- 专利标题（中）： 去环系统和减少定标器中视频信号过冲和下冲的方法
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申请号： US12654981申请日： 2010-01-12
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公开(公告)号： US20110037898A1公开(公告)日： 2011-02-17
- 发明人: Chian-Wen Chen
- 申请人： Chian-Wen Chen
- 申请人地址： TW Hsinchu
- 专利权人： Sunplus Technology Co., Ltd.
- 当前专利权人： Sunplus Technology Co., Ltd.
- 当前专利权人地址： TW Hsinchu
- 优先权： TW098127355 20090814
- 主分类号： H04N5/217
- IPC分类号： H04N5/217
摘要：
In a de-ring system for reducing the overshooting and undershooting of a video signal after scaling on the horizontal and the vertical direction in a scaler, a region judgment device receives the video signal and detects the attributes of the region in the video signal. When the region in the video signal is an edge and flat area, the de-ring system adjusts the weighting coefficient to increase the low frequency components for reducing the overshooting and undershooting of the video signal. When the region in the video signal is neither an edge nor an edge and flat area, the de-ring system adjusts the weighting coefficient to increase the high frequency components for preserving the high frequency components of the video signal, so as to dramatically reduce the overshooting and undershooting of a video signal.
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