Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2007-03-13
2007-03-13
Tran, Henry N. (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S099000, C345S103000, C345S690000
Reexamination Certificate
active
09382677
ABSTRACT:
The present invention is intended to achieve an improvement in the horizontal resolution of an active matrix semiconductor display device. In accordance with the present invention, by supplying a modulated clock signal obtained by frequency modulating a reference clock signal at a constant period to a driving circuit of an active matrix semiconductor display device or to a driving circuit of a passive matrix semiconductor display device, signal information (the presence or absence of an edge, the extent of nearness) relative to the vicinity of the sampling of video signals (image signals) sampled on the basis of this modulated clock signal can be written to the corresponding pixels of the semiconductor display device as shading information. The driving method of the present invention makes use of a phenomenon which apparently makes the resolution of an image display higher owing to the shading information (visual Mach phenomenon and Craik-O'Brien phenomenon).
REFERENCES:
patent: 4713688 (1987-12-01), Guttner
patent: 5025400 (1991-06-01), Cook et al.
patent: 5115189 (1992-05-01), Holcomb
patent: 5334996 (1994-08-01), Tanigaki et al.
patent: 5359342 (1994-10-01), Nakai et al.
patent: 5420645 (1995-05-01), Traa et al.
patent: 5448259 (1995-09-01), Hidaka
patent: 5568163 (1996-10-01), Okumura
patent: 5594569 (1997-01-01), Konuma et al.
patent: 5600347 (1997-02-01), Thompson et al.
patent: 5643826 (1997-07-01), Ohtani et al.
patent: 5703621 (1997-12-01), Martin et al.
patent: 5736893 (1998-04-01), Puckette et al.
patent: 5737033 (1998-04-01), Musuda
patent: 5757338 (1998-05-01), Bassetti et al.
patent: 5801672 (1998-09-01), Masuda et al.
patent: 5818412 (1998-10-01), Maekawa
patent: 5818413 (1998-10-01), Hayashi et al.
patent: 5818870 (1998-10-01), Yaguchi
patent: 5821913 (1998-10-01), Mamiya
patent: 5883609 (1999-03-01), Asada et al.
patent: 5909144 (1999-06-01), Puckette et al.
patent: 5923962 (1999-07-01), Ohtani et al.
patent: 5940061 (1999-08-01), Sato
patent: 6020872 (2000-02-01), Mizukata et al.
patent: 6046735 (2000-04-01), Bassetti et al.
patent: 6088014 (2000-07-01), Furuhashi et al.
patent: 6104863 (2000-08-01), Strolle et al.
patent: 6115020 (2000-09-01), Taguchi et al.
patent: 6147668 (2000-11-01), Eglit
patent: 6271822 (2001-08-01), Chiang
patent: 6281873 (2001-08-01), Oakley
patent: 6320574 (2001-11-01), Eglit
patent: 6657640 (2003-03-01), Shigeta
patent: 02-135421 (1990-05-01), None
patent: 08-065609 (1996-03-01), None
patent: 09-149344 (1997-06-01), None
patent: 0 786 867 (1997-07-01), None
patent: 10-268842 (1998-10-01), None
patent: 02-135421 (1990-05-01), None
patent: 07-130652 (1995-05-01), None
patent: 07-135318 (1995-05-01), None
patent: 08-065609 (1996-03-01), None
patent: 08-078329 (1996-03-01), None
patent: 09-149344 (1997-06-01), None
patent: 09-289527 (1997-11-01), None
patent: 10-268842 (1998-10-01), None
Hoekstra, “Frequency Modulation of System Clocks for EMI Reduction”, Aug. 1997, pp. 101-106, Hewlett-Packard Journal.
Search Report, European Patent Office, Jul. 27, 2000, 4 pages.
W42C31-09, “Spread Spectrum Frequency Generator”, Jul. 1998, pp. 1-9, IC Works.
Application Note 201, “EMI Suppression Techniques with Spread Spectrum Clock Gereator (SSCG) ICs”, Feb. 1998, pp. 1-2, IC Works.
Related U.S. Appl. No. 09/740,944, filed Dec. 21, 2000; Hiroki Masaaki; “Display Device and Method of Driving the Same”.
H. Furue et al., p. -78:Characteristics and Driving Scheme of Polymer-Stabilized Monostable FLCD Exhibiting Fast Response Time and High Contrast Ratio with Gray-Scale Capability,SID Digest, SID International Symposium Digest of Technical Papers, 1998, pp. 782-785.
T. Yoshida et al., 33.2:A Full-Color Thresholdless Antiferroelectric LCD Exhibiting Wide Viewing Angle with Fast Response Time,SID Digest, SID International Symposium Digest of Technical Papers, vol. 33, No. 2, 1997, pp. 841-844.
S. Inui et al.,Thresholdless Antiferroelectricity in Liquid Crystals and its Application to Displays,Journal of Materials Chemistry, 1996, pp. 671-673.
Application Note 201,EMI Suppresion Techniques with Spread Spectrum Clock Generator (SSCG) ICs,IC Works, Feb., 1998, pp. 1-2.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Tran Henry N.
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