Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2006-07-31
2010-06-01
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S204000, C345S690000, C345S691000
Reexamination Certificate
active
07728832
ABSTRACT:
A display control/drive device (a liquid crystal controller driver and a semiconductor integrated circuit for driving liquid crystals) which can serve to reduce peak currents and thereby restrain the occurrence of EMI is to be provided. In a liquid crystal display control/drive device in which image signals to be applied to signal lines of a color liquid crystal panel are generated in response to display image data that are received, image signals for pixels of the same color are divided into a plurality of groups. And during a period in which the substantial frame frequency can be reduced, the period of a line clock matching one horizontal period is extended to slightly stagger the output timing of image signals from one to another of the groups and the sequence of outputs from the different groups is periodically varied.
REFERENCES:
patent: 6611000 (2003-08-01), Tamura et al.
patent: 7187393 (2007-03-01), Tokimoto et al.
patent: 7432903 (2008-10-01), Kato
patent: 2003-233358 (2003-08-01), None
patent: 2004-029540 (2004-01-01), None
Hjerpe Richard
Miles & Stockbridge P.C.
Renesas Technology Corp.
Shapiro Leonid
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