Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1995-10-18
1999-09-21
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345 63, G09G 328
Patent
active
059560142
ABSTRACT:
In a plasma display panel, an analogue brightness value given by a variable resistor is periodically converted into a digital brightness value and stored in a memory. A digital brightness value of a current period is compared with the digital brightness value of the next preceding period stored in the memory, to produce a difference brightness value which is compared with a predetermined brightness value and, if larger than the predetermined value, the brightness value stored in the memory is updated. Alternatively, power consumption of a display device is detected and, when the power consumption is larger than a set point, a brightness value is gradually decreased and, when the power consumption is smaller than the set point, the brightness value is gradually adjusted to a brightness set value.
REFERENCES:
patent: 4044375 (1977-08-01), Norman
patent: 4394689 (1983-07-01), Wallace et al.
patent: 4547797 (1985-10-01), Mick
patent: 5347294 (1994-09-01), Usui et al.
patent: 5583527 (1996-12-01), Fujisaki et al.
Kawada et al., "Plasma Display Device," Patent Abstracts of Japan (Fujitsu Ltd) & JP 03282582 A, Dec. 12, 1991.
Toyama et al., "Color Plasma Display," Patent Abstracts of Japan (Oki Electric Ind Co Ltd) & JP 04051285 A, Feb. 19, 1992.
Kameyama Shigeki
Kaneko Keiichi
Kishi Tomokatsu
Kuriyama Hirohito
Tajima Masaya
Brier Jeffery
Fujitsu Limited
LandOfFree
Brightness control and power control of display device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Brightness control and power control of display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brightness control and power control of display device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-84618