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公开(公告)号:US5574478A
公开(公告)日:1996-11-12
申请号:US874038
申请日:1992-04-27
申请人: Vlad Bril , Boyd G. Pett
发明人: Vlad Bril , Boyd G. Pett
摘要: Modifications to a prior art system known as video graphics adapter (VGA) for displaying color images on a monitor attached to a personal computer. The modifications provide the following four enhancements to a standard VGA system: (i) user definable border color; (ii) automatic powering down of the digital analog converter (DAC) component of the VGA RAMDAC and monitor sense comparator for LCD monitors when the RAMDAC is not in use; (iii) stopping of the RAMDAC clock for LCD monitors when the RAMDAC is not in use; and (iv) true color support.
摘要翻译: 称为视频图形适配器(VGA)的现有技术系统的修改,用于在连接到个人计算机的监视器上显示彩色图像。 这些修改对标准VGA系统提供以下四个增强功能:(i)用户可定义的边框颜色; (ii)当RAMDAC不使用时,自动断开VGA RAMDAC的数字模拟转换器(DAC)组件和LCD监视器的监视器检测比较器; (iii)当RAMDAC不使用时,停止LCD监视器的RAMDAC时钟; 和(iv)真正的颜色支持。