Automatic screen brightness compensating device and method there

Details Automatic screen brightness compensating device and method there Automatic screen brightness compensating device and method there

1997-10-09

2000-07-18

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345 20, 345 22, G09G 510

Patent

active

060913975

ABSTRACT:
Provided is a cathode ray tube video display device, including: a micro computer for receiving data of factors affecting the brightness of a screen with time, computing a decreased amount of the brightness of the screen to compensate for the decreased amount and outputting a screen brightness compensation signal; and cathode ray tube controlling means for receiving the screen brightness compensation signal output from the micro computer, controlling a brightness level of a chrominance signal applied externally according to a level of the screen brightness compensation signal, and compensating the brightness of the screen which is decreased with time.

REFERENCES:
patent: 3930120 (1975-12-01), Keller et al.
patent: 5077502 (1991-12-01), Shaklee et al.
patent: 5400086 (1995-03-01), Sano et al.

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