Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Patent
1993-04-19
1995-08-29
Weldon, Ulysses
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
348686, 348687, G09G 300
Patent
active
054464838
ABSTRACT:
An electronic display and electronic display controller is provided for quickly and precisely adjusting visibility parameters of an object being displayed. The electronic display controller includes a clocking circuit capable of producing varying frequency clocking pulses which can be received by a potentiometer to incrementally adjust the visibility of a displayed object. Activation of one or more buttons on the external housing of the display will cause low frequency clocking signals to be sent to the potentiometer and, after a set period of time, higher frequency clocking signals can be sent provided the button remains active. Initial low frequency and subsequent high frequency clocking signals ensure higher precision initial tuning and, if needed, rapid course tuning of the object visibility.
REFERENCES:
patent: 4065681 (1977-12-01), Beyers, Jr.
patent: 4800433 (1989-01-01), Kamemoto
patent: 4982287 (1991-01-01), Lagoni
patent: 5264934 (1993-11-01), Nakagawa
Hortensius, et al., "Digital Contrast and Brightness Controls for a Liquid Crystal Display", IBM Technical Disclosure Bulletin, vol. 36, No. 10 (Oct. 1993), pp. 395-397.
Advanced Micro Devices , Inc.
Luu Matthew
Weldon Ulysses
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