Computer graphics processing and selective visual display system – Plural display systems – Diverse systems
Reexamination Certificate
2005-04-05
2005-04-05
Nguyen, Chanh (Department: 2675)
Computer graphics processing and selective visual display system
Plural display systems
Diverse systems
C345S003200, C345S099000
Reexamination Certificate
active
06876339
ABSTRACT:
The object is to realize format conversion in inputting an image signal corresponding to conventional low resolution (hereafter referred to as a video signal) to an active matrix semiconductor display device or to a passive matrix semiconductor display device corresponding to recent high resolution, and at the same time to provide a novel method of driving capable of improving the resolution in an outline portion of an image. With the driving method of the present invention, conversion of a screen size which is not capable of being completely performed by only lowering a clock frequency, can be completely performed by artificially reducing the number of scans of gate signal lines in accordance with outputting a gate selection pulse at a timing for simultaneously selecting a plurality of gate signal lines using a modulated clock signal in which a clock signal has been modulated at a constant period. Simultaneously, by creating shading information in the outline portion in accordance with using a modulated clock in a source signal line driver circuit and a gate signal line driver circuit, the apparent resolution is improved utilizing the Mach phenomenon and the Craik-O'Brien phenomenon.
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Inventor: Masaaki Hiroki, Specification and Drawings for U.S. patent application Ser. No.: 09/382,677, Filed: Aug. 25, 1999, 113 pages, “Display Device and Method of Driving the Same”.
Office Action dated Jun. 7, 2004 for U.S. Appl. No. 09/382,677 filed Aug. 25, 1999.
Anyaso Uchendu O.
Nguyen Chanh
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
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