Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Patent
1996-06-20
1997-08-05
Chow, Dennis
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
345112, 348473, G09G 500
Patent
active
056547439
ABSTRACT:
In a picture display arrangement, for example, a personal computer and a monitor coupled thereto, the PC generates control signals for adjusting monitor settings (brightness, contrast, picture position, picture dimensions). The control signals are transmitted to the monitor by modulating the synchronizing signal (preferably by pulse-width modulation). The monitor includes a demodulator for deriving the control signals. This enables manual controls on the monitor to be dispensed with. For this, the interface between PC and monitor is not modified. Pulse-width modulation of the synchronizing signals is possible by means of a utility program loaded into the PC.
REFERENCES:
patent: 4991023 (1991-02-01), Nicols
patent: 5031118 (1991-07-01), Morizot
patent: 5185603 (1993-02-01), Medin
patent: 5400086 (1995-03-01), Sano et al.
"Ubertragung Eines Zweiten Tonkanals Beim Fernsehen", Rundfunktechnische Mitteilungen, vol. 11, No. 2, 1967, Norderstedt De pp. 108-113 by S. Dinsel.
Hu Shih-Hsien
Maloney Martin E.
Shy Cheng-I (Jack)
Yu Shih-Che
Chow Dennis
Goodman Edward W.
U.S. Philips Corporation
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