Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1994-06-29
1998-06-09
Powell, Mark R.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
348674, H04N 521
Patent
active
057642168
ABSTRACT:
The present gamma correction circuit is provided with a memory for supplying correction data for the gamma correction of the luminance of a display means, and a selector for selecting either from N-bit uncorrected digital display data and corrected data for outputting as driving data for the display means. A liquid crystal driver is provided with gamma correction means for gamma-correcting the luminance of a liquid crystal panel inputting the N-bit digital display data for liquid crystal displaying and means for converting the N-bit digital display data into analog data, the gamma correction means comprises a gamma correction circuit of the invention. A liquid crystal display device is provided with a liquid crystal display panel inputting the N-bit digital display data for liquid crystal displaying, and gamma correction means or a liquid crystal driver for gamma-correcting the luminance of the liquid crystal display panel. The gamma correction means or the liquid crystal driver comprises a gamma correction means or a liquid crystal driver of the present invention.
REFERENCES:
patent: 4388621 (1983-06-01), Komotsu et al.
patent: 5151689 (1992-09-01), Kabuto et al.
patent: 5325195 (1994-06-01), Ellis et al.
patent: 5408267 (1995-04-01), Main
Kishida Katsuhiko
Miyahara Masaki
Onodera Tosiya
Oshiro Mikio
Tanaka Katsunori
Fujitsu Limited
Powell Mark R.
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