Computer graphics processing and selective visual display system – Display driving control circuitry – Waveform generator coupled to display elements
Reexamination Certificate
2011-08-30
2011-08-30
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Waveform generator coupled to display elements
Reexamination Certificate
active
08009159
ABSTRACT:
A semiconductor display device capable of performing clear display of a high definition image, in which flicker, vertical stripes, horizontal stripes, and diagonal stripes are unlikely to be seen by an observer, is provided. An image signal input from the outside to a RAM of a frame conversion portion in a semiconductor display device is written in, and the written in image signal is read out two times, in order. A period for reading out the image signal input to the RAM one time is shorter than a period for writing in the image signal to the RAM. The electric potentials of display signals input to each pixel in two consecutive frame periods are inverted, with the electric potential of opposing electrodes (opposing electric potential) as a reference, whereby the same image is displayed in a pixel portion in the two consecutive frame periods.
REFERENCES:
patent: 4630034 (1986-12-01), Takahashi
patent: 5365284 (1994-11-01), Matsumoto et al.
patent: 5643826 (1997-07-01), Ohtani et al.
patent: 5790092 (1998-08-01), Moriyama
patent: 5844538 (1998-12-01), Shiraki et al.
patent: 5847688 (1998-12-01), Ohi et al.
patent: 5923962 (1999-07-01), Ohtani et al.
patent: 5942856 (1999-08-01), Koyama
patent: 6014126 (2000-01-01), Nishihara
patent: 6049321 (2000-04-01), Sasaki
patent: 6166725 (2000-12-01), Isami et al.
patent: 6243064 (2001-06-01), Hirakata
patent: 6285042 (2001-09-01), Ohtani et al.
patent: 6295043 (2001-09-01), Hashimoto et al.
patent: 6335541 (2002-01-01), Ohtani et al.
patent: 6340970 (2002-01-01), Furuhashi et al.
patent: 6628253 (2003-09-01), Hiroki
patent: 6650311 (2003-11-01), Mori
patent: 6998639 (2006-02-01), Ohtani et al.
patent: 61-069283 (1986-04-01), None
patent: 1-188181 (1989-07-01), None
patent: 07-130652 (1995-05-01), None
patent: 8-166775 (1996-06-01), None
patent: 9-204159 (1997-08-01), None
Rabeler, U. et al, “Frame-Rate Converter and High Speed SDRAM Memory Controller for Digital Multi-Media Projectors,” EuroDisplay '99: Proceedings of the 19th International Display Research Conference, Sep. 6-9, 1999, Berlin, Germany, SID '99 Digest, pp. 347-350.
Hiroki Masaaki
Inoue Noboru
Onoya Shigeru
Sato Eiji
Edwards Carolyn R
Hjerpe Richard
Husch & Blackwell LLP
Semiconductor Energy Laboratory Co,. Ltd.
LandOfFree
Semiconductor display device and method of driving a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductor display device and method of driving a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor display device and method of driving a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2734404