Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2005-12-13
2005-12-13
Liang, Regina (Department: 2674)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
C345S077000, C345S089000, C345S094000, C345S642000, C345S694000
Reexamination Certificate
active
06975336
ABSTRACT:
The invention relates to a device and methods to reduce the number of voltage levels of a data signal and to simplify a generation process therefor when gray-scale display is performed using an MLS driving method. The device can include a scanning-electrode driving circuit that selects three scanning electrodes n times every vertical scanning period. At each selection, selection voltages in accordance with three column elements, corresponding to the selection, of a 3-row n-column scanning pattern can be applied to the scanning electrodes. In each selection period in which three scanning electrodes are selected, a signal-electrode driving circuit can compare a bit string in accordance with the column elements corresponding to the selection of the scanning pattern with each of bit strings, which consists of a bit in each position of pieces of gray-scale data D for three pixels at the intersections of a signal electrode and the three scanning electrodes, and conversion data Dt is generated in accordance with the comparison results. In each selection period, the voltage +Vx is applied to the signal electrode for a period in accordance with the conversion data Dt, and the voltage −Vx is applied to the signal electrode for the remaining period.
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DInh Duc Q
Liang Regina
Seiko Epson Corporation
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