Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2005-03-22
2005-03-22
Eisen, Alexander (Department: 2674)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
C345S589000, C345S600000
Reexamination Certificate
active
06870552
ABSTRACT:
A former stage signal adjustment module included in a signal adjustment device has a signal conversion sub-module, a first lookup table, and an interpolation sub-module. The signal conversion sub-module outputs an upper q-bit color video signal, where q is an integer of not less than 1 and not greater than (p−1), in response to input of a p-bit color video signal, where p is an integer of not less than 2. The first lookup table stores information representing a mapping of a tone value expressed by the upper q-bit color video signal to an r-bit tone value set according to first adjustment information regarding a predetermined characteristic, where r is an integer of not less than p. The first lookup table outputs, in response to input of the upper q-bit color video signal from the signal conversion sub-module, an r-bit first reference signal, which represents a lower tone value than a tone value corresponding to the p-bit color video signal, and an r-bit second reference signal, which represents a higher tone value than the tone value corresponding to the p-bit color video signal. The interpolation sub-module interpolates and generates an r-bit former stage-adjusted video signal corresponding to the p-bit color video signal, based on the first reference signal and the second reference signal. This arrangement of the present invention desirably ensures a high-quality resulting image without lengthening a processing time required for modifying the lookup tables of the respective colors.
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Eisen Alexander
Oliff & Berridg,e PLC
LandOfFree
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