发明授权
US6005975A Circuit for compensating pattern recognition type edge of video signal
processor
失效
用于补偿视频信号处理器的图案识别类型边缘的电路
- 专利标题: Circuit for compensating pattern recognition type edge of video signal processor
- 专利标题(中): 用于补偿视频信号处理器的图案识别类型边缘的电路
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申请号: US635754申请日: 1996-04-22
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公开(公告)号: US6005975A公开(公告)日: 1999-12-21
- 发明人: Sung Ryoul Cheon
- 申请人: Sung Ryoul Cheon
- 申请人地址: KRX
- 专利权人: LG Electronics Inc.
- 当前专利权人: LG Electronics Inc.
- 当前专利权人地址: KRX
- 优先权: KRX95-9750 19950425
- 主分类号: H04N5/205
- IPC分类号: H04N5/205 ; G06T7/60 ; H04N5/208 ; H04N1/409
摘要:
An improved circuit for compensating a pattern recognition type edge for a video signal processor which is capable of preventing a undershooting and an overshooting by recognizing a pattern of a luminance signal which is converted into a digital form when compensating an edge of a luminance signal, by substituting a sample value at incline start or end portions and at decline start or end portions of a pattern with the previous sample value or the next sample value, by generating a plurality of luminance signals having a different delay time by sequentially delaying a luminance signal which is converted into a digital form as many as the number of samples, by subtracting a luminance signal which is delayed by the previous process from the luminance signal which is delayed by each process, by recognizing a pattern of an edge of luminance signal by logically operating a difference signal and a reference signal after computing a plurality of difference signals, and by selecting a signal among luminance signals having a different delay time in accordance with the recognized pattern.
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