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    • 8. 发明授权
    • Liquid crystal display control apparatus and liquid crystal display apparatus
    • 液晶显示控制装置和液晶显示装置
    • US06353435B2
    • 2002-03-05
    • US09059363
    • 1998-04-14
    • Yasuyuki KudoTsutomu FuruhashiHiroyuki ManoShinji UchidaTatsuhiro InuzukaTakeshi MaedaSatoshi Konuma
    • Yasuyuki KudoTsutomu FuruhashiHiroyuki ManoShinji UchidaTatsuhiro InuzukaTakeshi MaedaSatoshi Konuma
    • G09G500
    • G09G3/3644G09G3/2025G09G3/3622
    • A liquid crystal display control apparatus includes a display on/off data generation circuit for generating plural display on/off data per pixel corresponding to M (M>N, M and N being integers) frame periods of a video output signal in N frame periods of a video input signal on a unit pixel basis in response to gray-scale data of pixel units included in the video input signal, a write control circuit for writing display on/off data per pixel corresponding to M frames of the video output signal generated by the display on/off data generation circuit into a frame memory during N frame periods of the video input signal, and a read control circuit for sequentially reading out, from the frame memory, display on/off data corresponding to M frames of the video output signal written in the frame memory in synchronism with one display scan period of the video output signal, thereby the data written in the frame memory is not gray-scale data but display on/off data of one bit, therefore, a data bus width at a time of accessing the frame memory can be reduced.
    • 液晶显示控制装置包括:显示器开/关数据生成电路,用于产生与N帧中的视频输出信号的M(M> N,M和N为整数)对应的像素的多个显示开/关数据 响应于包括在视频输入信号中的像素单元的灰度数据,以单位像素为基础的视频输入信号的写控制电路,用于写入对应于所生成的视频输出信号的M帧的每像素的显示开/关数据的写控制电路 通过在视频输入信号的N帧周期期间通过显示器的开/关数据产生电路进入帧存储器,以及读取控制电路,用于从帧存储器顺序地读出对应于视频的M个帧的开/关数据 输出信号与视频输出信号的一个显示扫描周期同步写入帧存储器,由此写入帧存储器的数据不是灰度数据,而是显示一位的开/关数据,因此数据 可以减少访问帧存储器时的总线宽度。