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2. 发明授权

US5548765A Power saving display subsystem for portable computers 失效
标题翻译：便携式电脑节能显示子系统
公开(公告)号：US5548765A
公开(公告)日：1996-08-20
申请号：US205336
申请日：1994-03-02
申请人： Takeo Tsunoda , Hitomi Aizawa , Yuji Hama
发明人： Takeo Tsunoda , Hitomi Aizawa , Yuji Hama
IPC分类号： G06F1/32 , G06F1/04 , G06F3/147 , G06F1/00
CPC分类号： G06F1/3218 , G06F1/3265 , G06F3/1475 , G09G2320/103 , G09G2330/021 , Y02B60/1242
摘要： A computer system, according to an embodiment of the present invention comprises a host CPU, an image rendering device, a CRT image memory, a video subsystem, an alternative display converter, an alternative display memory, an LCD controller, a change-of-status (COS) detector, a power up/down controller, and a computer display screen. The COS detector monitors the host CPU, image rendering device, CRT image memory, looking for updates that would require a change in the image displayed on the computer display screen. The COS detector signals the power up/down controller to power-off and/or slow system clocks to the CRT image memory, the video subsystem, the alternative display converter, the alternative display memory, and the LCD controller when there is no change to be made in the image on the computer display screen. And conversely, the COS detector signals the power up/down controller to power-up and/or restore system clocks to full-speed for the CRT image memory, the video subsystem, the alternative display converter, the alternative display memory, and the LCD controller when a change (update) is to be made in the image on the computer display screen.
摘要翻译：根据本发明的实施例的计算机系统包括主机CPU，图像渲染设备，CRT图像存储器，视频子系统，替代显示转换器，替代显示存储器，LCD控制器，状态（COS）检测器，上电/下电控制器和计算机显示屏。 COS检测器监视主机CPU，图像渲染设备，CRT图像存储器，寻找需要更改显示在计算机显示屏幕上的图像的更新。 COS检测器向上升/下降控制器发出信号，以便在CRT图像存储器，视频子系统，替代显示转换器，替代显示存储器和LCD控制器上将系统时钟关闭和/ 在计算机显示屏上的图像中进行制作。相反，COS检测器发出信号上电/下电控制器为CRT图像存储器，视频子系统，替代显示转换器，替代显示存储器和LCD的上电和/或恢复系统时钟全速当在计算机显示屏幕上的图像中进行更改（更新）时，控制器。

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