Display device
AssigneeNEC-Mitsubishi Electric Visual Systems Corporation
InventorsKazuo Yoshioka, Tomohiro Nakagawa, Yoshiyuki Shirasaki, Takashi Katagiri
Life of this patent
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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.
Claims6
A display device used with connection to a computer device, said display device being operative in a power saving mode requiring lower power consumption during operation than a normal mode, said display device comprising:
- an illuminance sensor for detecting the illuminance of an environment in which said display device is placed and outputting an illuminance value indicating the detected illuminance;
- and
- a controller for changing an operating mode to said power saving mode independently of an input signal from said computer device when said illuminance value is lower than a predetermined illuminance value.
Dependencies are inferred from the claim text.