Liquid crystal device, control circuit therefor, and...

Details Liquid crystal device, control circuit therefor, and... Liquid crystal device, control circuit therefor, and...

2007-04-10

2010-12-21

Nguyen, Kevin M (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S098000

Reexamination Certificate

active

07855704

ABSTRACT:
A liquid-crystal-device control circuit includes pixels corresponding to intersections between scanning lines in rows and data lines in columns, a counter that counts the number of horizontal lines included in a video signal supplied correspondingly to a region broader than pixels corresponding to the scanning lines in the rows, a determination circuit that determines which is greater between the number of horizontal lines counted by the counter and a value stored in a predetermined register, an addition/subtraction circuit that, depending on a result of determination by the determination circuit, adds a predetermined number to or subtracts the predetermined number from the value stored in the register, and a scanning control circuit which stores the value obtained by the addition/subtraction circuit in the register, and which defines start timing of the second field on the basis of the value stored in the register.

REFERENCES:
patent: 5448260 (1995-09-01), Zenda et al.
patent: 2004/0183769 (2004-09-01), Schreyer et al.
patent: 2005/0062733 (2005-03-01), Morita
patent: 2005/0099379 (2005-05-01), Iisaka
patent: A-2004-177930 (2004-06-01), None

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