发明授权
US5103219A Picture signal processing circuit for improving high-frequency picture
resolution upon picture signal display
失效
图像信号处理电路,用于改善图像信号显示的高频图像分辨率
- 专利标题: Picture signal processing circuit for improving high-frequency picture resolution upon picture signal display
- 专利标题(中): 图像信号处理电路,用于改善图像信号显示的高频图像分辨率
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申请号: US414808申请日: 1989-09-29
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公开(公告)号: US5103219A公开(公告)日: 1992-04-07
- 发明人: Rudolf Kemner , Johannes J. Stouten
- 申请人: Rudolf Kemner , Johannes J. Stouten
- 申请人地址: NY New York
- 专利权人: U.S. Philips Corporation
- 当前专利权人: U.S. Philips Corporation
- 当前专利权人地址: NY New York
- 优先权: NLX8802426 19881004
- 主分类号: H04N5/205
- IPC分类号: H04N5/205 ; G06T3/40 ; H04N5/208 ; H04N5/74
摘要:
The circuit has an input terminal (1) for supplying a picture signal (CS) formed line and field-sequentially with line and field or frame periods (TV) and an output terminal (2) for supplying a processed picture signal (CS') to be applied to a picture display device (5) comprising a picture display tube operating by way of electron beam scanning (e) of a display screen (8). In the circuit the input terminal (1) is coupled to a filter circuit (10) which has a first output (11) and a second output (12) for supplying a low-frequency (CS.sub.L) or high-frequency (CS.sub.H) picture signal component, respectively. The first output (11) is coupled via an amplifier circuit (16) to a first input (21) of a time-division multiplex circuit (20) having a second input (22) to which the first output (11) and the second output (12) of the filter circuit (10) are coupled each via an amplifier circuit (17, 18) and an adder circuit (19). The time-division multiplex circuit (20) has a switching input (23) which is coupled to an output (29) of a switching signal generator (28) for supplying a periodical switching signal (VS) of the double field or frame period (2TV). An output (24) of the time-division multiplex circuit (20) is coupled to the output terminal (2) of the picture signal processing circuit. The resultant spatial time-division multiplex display yields the improved high-frequency picture resolution.
公开/授权文献
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