公开(公告)号：US5648791A

公开(公告)日：1997-07-15

申请号：US455348

申请日：1995-05-31

申请人： Yoshito Date ,  Shoichi Takeshita ,  Tetsuro Ohmori ,  Junji Nakatsuka ,  Yoshio Imamura

发明人： Yoshito Date ,  Shoichi Takeshita ,  Tetsuro Ohmori ,  Junji Nakatsuka ,  Yoshio Imamura

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  H03M1/66 ,  H03M1/80

CPC分类号： G09G3/2011 ,  G09G3/3648 ,  G09G3/3688 ,  H03M1/804 ,  G09G2310/027 ,  G09G3/3614

摘要： A liquid crystal display control system comprises a liquid crystal panel, a plurality of data latches for storing digital gray scale data, and a plurality of D/A converters for converting the outputs of the data latches into analog signals to be applied to the liquid crystal panel. The display data is digital signals, and the digital signals are processed up to the D/A converters just before the liquid crystal panel. Afterwards, the digital signals are converted into analog signals in the horizontal display period of relatively slow operating speed, and therefore analog circuits having many adjusting points may be reduced. Accordingly, the adjusting positions are reduced, and the adjusting process in mass production is simplified. In the case of a large screen display, in particular, although the data transfer speed is high, since the display data are digital signals, a high display quality is obtained by transferring the signals without deteriorating the display data. Moreover, the constitution is composed of digital circuits up to the D/A converters just before the liquid crystal panel, and therefore, the power consumption is small, and the economy and portability are excellent, while the mounting area is reduced, thereby realizing a liquid crystal display control system of small size and light weight.

摘要翻译： 一种液晶显示控制系统，包括液晶面板，用于存储数字灰度数据的多个数据锁存器和用于将数据锁存器的输出转换成要施加到液晶的模拟信号的多个D / A转换器 面板。 显示数据是数字信号，数字信号在液晶面板之前被处理到D / A转换器。 之后，数字信号在相对较慢的运行速度的水平显示周期中被转换为模拟信号，因此可以减少具有许多调整点的模拟电路。 因此，调整位置减少，并且大规模生产中的调整过程被简化。 在大屏幕显示的情况下，特别是尽管数据传送速度较高，由于显示数据是数字信号，通过传送信号而不会使显示数据恶化，可以获得高显示质量。 另外，在液晶面板之前由D / A转换器构成数字电路，因此功耗小，经济性和便携性优异，同时安装面积减小，从而实现 液晶显示控制系统体积小，重量轻。

公开(公告)号：US5453757A

公开(公告)日：1995-09-26

申请号：US391616

申请日：1995-02-21

申请人： Yoshito Date ,  Shoichi Takeshita ,  Tetsuro Ohmori ,  Junji Nakatsuka ,  Yoshio Imamura

发明人： Yoshito Date ,  Shoichi Takeshita ,  Tetsuro Ohmori ,  Junji Nakatsuka ,  Yoshio Imamura

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  H03M1/66 ,  H03M1/80

CPC分类号： G09G3/2011 ,  G09G3/3648 ,  G09G3/3688 ,  H03M1/804 ,  G09G2310/027 ,  G09G3/3614

摘要： A liquid crystal display control system comprises a liquid crystal panel, a plurality of data latches for storing digital gray scale data, and a plurality of D/A converters for converting the outputs of the data latches into analog signals to be applied to the liquid crystal panel. The display data is digital signals, and the digital signals are processed up to the D/A converters just before the liquid crystal panel. Afterwards, the digital signals are converted into analog signals in the horizontal display period of relatively slow operating speed, and therefore analog circuits having many adjusting points may be reduced. Accordingly, the adjusting positions are reduced, and the adjusting process in mass production is simplified. In the case of a large screen display, in particular, although the data transfer speed is high, since the display data are digital signals, a high display quality is obtained by transferring the signals without deteriorating the display data. Moreover, the constitution is composed of digital circuits up to the D/A converters just before the liquid crystal panel, and therefore, the power consumption is small, and the economy and portability are excellent, while the mounting area is reduced, thereby realizing a liquid crystal display control system of small size and light weight.

摘要翻译： 一种液晶显示控制系统，包括液晶面板，用于存储数字灰度数据的多个数据锁存器和用于将数据锁存器的输出转换成要施加到液晶的模拟信号的多个D / A转换器 面板。 显示数据是数字信号，数字信号在液晶面板之前被处理到D / A转换器。 之后，数字信号在相对较慢的运行速度的水平显示周期中被转换为模拟信号，因此可以减少具有许多调整点的模拟电路。 因此，调整位置减少，并且大规模生产中的调整过程被简化。 在大屏幕显示的情况下，特别是尽管数据传送速度较高，由于显示数据是数字信号，通过传送信号而不会使显示数据恶化，可以获得高显示质量。 另外，在液晶面板之前由D / A转换器构成数字电路，因此功耗小，经济性和便携性优异，同时安装面积减小，从而实现 液晶显示控制系统体积小，重量轻。