Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2005-03-30
2009-02-10
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S300000, C713S340000, C345S087000
Reexamination Certificate
active
07490253
ABSTRACT:
An illuminance sensor detects an illuminance value for an environment in which a display device is placed and provides the illuminance value to a controller. The controller determines whether to cause the display device to make a transition to a power saving mode or not in accordance with the illuminance value inputted thereto. For the transition to the power saving mode, the controller stops the operation of a backlight drive signal generator to turn off a backlight unit, and stops the supply of power and a display signal to a liquid crystal panel.
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VESA Video Electronics Standards Association, “Display Power Management (DPM) Standard”, Release A, Mar. 3, 2003, pp. 1-10.
Katagiri Takashi
Nakagawa Tomohiro
Shirasaki Yoshiyuki
Yoshioka Kazuo
Bae Ji H
Birch & Stewart Kolasch & Birch, LLP
Lee Thomas
NEC - Mitsubishi Electric Visual Systems Corp.
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