Display device

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United States of America Patent

PATENT NO 5406305
SERIAL NO

08182569

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A display device includes an ambient light sensor positioned adjacent a display screen so as to confront an occupant in front of the display device, and a luminance level setting unit for inputting a desired luminance level. An output from the ambient light sensor is fed to a screen luminance calculating unit for calculating the adjustable range of screen luminance to be adjusted on the basis of an output signal from the ambient light sensor. A luminance determining unit determines a proper screen luminance based on an output signal from the screen luminance calculating unit and an output signal from the luminance level setting unit. A screen luminance control unit operates in response to an output signal from the luminance determining unit to adjust the screen luminance to the proper screen luminance.

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Patent Owner(s)

Patent OwnerAddress
MATSUSHITA ELECTRIC INDUSTRIAL CO LTDOSAKA JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shigeta, Teruaki Neyagawa, JP 27 675
Shimomura, Youko Moriguchi, JP 1 362
Takeuchi, Tetsuji Tsuzuki, JP 6 456

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