Liquid crystal driving device
    3.
    发明授权
    Liquid crystal driving device 失效
    液晶驱动装置

    公开(公告)号:US06346936B2

    公开(公告)日:2002-02-12

    申请号:US09107219

    申请日:1998-06-29

    IPC分类号: G09G500

    摘要: In order to remove high-frequency components contained in video signals and high-frequency components occurring in a processing stage of the video signals, a method of filtering the video signals has a problem that it has a strong side reaction that sharpness is greatly deteriorated and it is liable to suffer an effect of dispersion of elements when the filter comprises an analog circuit, and thus the problem of the present invention to be solved is to effectively remove the high-frequency components. In the liquid crystal driving device of the present invention, a timing circuit 4 for generating a sampling pulse is constructed by an PLL circuit 41, a phase shifter 47 for periodically shifting the clock phase to vary the sampling phase and periodically varying the phase relationship between signals and pixels, and input means for alternating signals which comprise periodical waveform and modulated by a pulse wave every line or every field, the fixed pixels being restructured by periodically varying the phase relationship between the signals and the pixels, thereby bringing a visual filtering effect.

    摘要翻译: 为了去除在视频信号的处理阶段中发生的视频信号和高频分量中包含的高频分量,对视频信号进行滤波的方法具有如下问题:其具有强烈的副反应,锐度大大降低, 当滤波器包括模拟电路时,容易受到元件分散的影响,因此要解决的本发明的问题是有效地去除高频分量。 在本发明的液晶驱动装置中,用于产生采样脉冲的定时电路4由PLL电路41,移相器47构成,用于周期性地移位时钟相位以改变采样相位并周期性地改变采样脉冲之间的相位关系 信号和像素,以及用于交替信号的输入装置,其包括周期波形,并且每一行或每一场由脉冲波调制,固定像素通过周期性地改变信号和像素之间的相位关系而重构,从而产生视觉滤波效果 。