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1.发明公开
公开(公告)号：EP1304869A1
公开(公告)日：2003-04-23
申请号：EP01950036.2
申请日：2001-07-23
CPC分类号： H04N3/2335
摘要： A write PLL circuit generates a write clock signal for writing a video signal into a line memory. A readout PLL circuit generates a read clock signal for reading out the video signal stored in the line memory. An inner pincushion distortion correction voltage generation circuit modulates a correction waveform in the horizontal scanning period of time by a correction waveform in the vertical scanning period of time, to generate an inner pincushion distortion correction waveform, and adds a DC correction pulse to the inner pincushion distortion correction waveform and outputs the inner pincushion distortion correction waveform as an inner pincushion distortion correction voltage. A capacitive coupling circuit superimposes the inner pincushion distortion correction voltage on an output voltage of a loop filter of the readout PLL circuit, and feeds the inner pincushion distortion correction voltage to a VCO as a control voltage.
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2.发明授权VIDEO DISPLAY APPARATUS WITH VERTICAL SCAN VELOCITY MODULATION AND VIDEO DISPLAY METHOD THEREFOR 有权与垂直扫描速度调制和视频显示方法视频显示单元
公开(公告)号：EP1088445B1
公开(公告)日：2003-04-23
申请号：EP99923940.3
申请日：1999-06-07
发明人： UWABATA, Hideyo , TERAI, Katsumi , MIYATA, Minoru , KITAHARA, Toshiaki , OKUMURA, Naoji , TANAKA, Kazuto
摘要： A parallel scanning circuit outputs a parallel scanning signal for making forward and backward scanning lines parallel. A vertical correlation detection circuit detects a portion where the change in luminance in the vertical direction exceeds a predetermined value on the basis of a luminance signal, and outputs a movement control signal representing the distance of movement on the screen of the scanning line. A retrace period reversion circuit reverses the time axis of the movement control signal in a retrace period. A clamping circuit clamps the movement control signal to a predetermined DC voltage at the timing of horizontal synchronizing signal. A synthesizing circuit synthesizes the parallel scanning signal and the movement control signal, and feeds a synthesized signal as a vertical velocity modulation signal to a vertical velocity modulation coil.
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3.发明公开VIDEO DISPLAY APPARATUS WITH VERTICAL SCAN VELOCITY MODULATION AND VIDEO DISPLAY METHOD THEREFOR 有权与垂直扫描速度调制和视频显示方法视频显示单元
公开(公告)号：EP1088445A1
公开(公告)日：2001-04-04
申请号：EP99923940.3
申请日：1999-06-07
发明人： UWABATA, Hideyo , TERAI, Katsumi , MIYATA, Minoru , KITAHARA, Toshiaki , OKUMURA, Naoji , TANAKA, Kazuto
摘要： A parallel scanning circuit outputs a parallel scanning signal for making forward and backward scanning lines parallel. A vertical correlation detection circuit detects a portion where the change in luminance in the vertical direction exceeds a predetermined value on the basis of a luminance signal, and outputs a movement control signal representing the distance of movement on the screen of the scanning line. A retrace period reversion circuit reverses the time axis of the movement control signal in a retrace period. A clamping circuit clamps the movement control signal to a predetermined DC voltage at the timing of horizontal synchronizing signal. A synthesizing circuit synthesizes the parallel scanning signal and the movement control signal, and feeds a synthesized signal as a vertical velocity modulation signal to a vertical velocity modulation coil.
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公开(公告)号：EP1073271A1
公开(公告)日：2001-01-31
申请号：EP99913693.0
申请日：1999-04-16
发明人： OKUMURA, Naoji , MONTA, Hiroki , UWABATA, Hideyo , NIO, Yutaka , TANAKA, Kazuto , NISHIKAWA, Yutaka
CPC分类号： H04N5/44504 , H04N3/30 , H04N21/42653
摘要： A video signal processing circuit synthesizes a video signal and a graphic signal on the basis of a display switching control signal, inverts a synthesized signal on the time axis for each of a forward scanning period and a backward scanning period, and output a display signal. A speed modulating signal control circuit inverts the binarized display switching control signal on the time axis for each of the forward scanning period and the backward scanning period, expands the pulse width thereof, and feeds the display switching control signal to a speed modulating signal generating circuit. The speed modulating signal generating circuit subjects a display signal to first-order differentiation, inverts the polarity of a differentiated signal in the backward scanning signal, sets a portion, corresponding to the graphic signal, in the differentiated signal on the basis of the display switching control signal at a zero level, and generates a speed modulating signal.
摘要翻译： 视频信号处理电路基于显示切换控制信号来合成视频信号和图形信号，在正向扫描时段和反向扫描时段中的每一个时间轴上反转时间轴上的合成信号，并且输出显示信号。 速度调制信号控制电路在正向扫描期间和反向扫描期间中的每一个时间轴上反转时间轴上的二值化显示切换控制信号，扩展其脉冲宽度，并且将显示切换控制信号馈送到速度调制信号产生电路 。 速度调制信号发生电路使显示信号进行一阶微分，使反向扫描信号中的微分信号的极性反转，根据显示切换在微分信号中设定与图形信号对应的部分 控制信号为零电平，并产生速度调制信号。
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