Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-11-13
1997-07-01
Wu, Xiao
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345100, 345 98, G09G 336
Patent
active
056443293
ABSTRACT:
A display apparatus wherein the light transmittance of a pixel selected by a scanning electrode and a data electrode is changed in response to the difference of voltages applied to the scanning electrode and the data electrode, which comprises a display panel having a plurality of scanning electrodes and a plurality of data electrodes, a scanning voltage generator for applying a scanning voltage to the scanning electrodes of the display panel by receiving a scanning signal, a data voltage generator for applying a data voltage to the data electrodes of the display panel by receiving a data signal, an orthogonal function generator for generating an orthogonal function signal having substantially orthogonality, and a data signal forming circuit for operating the data signal based on a predetermined video signal and the orthogonal function signal generated from the orthogonal function generator, wherein the data signal forming circuit includes a field video signal converter for distributing signals for a single picture to those for a plurality of sub-pictures, and an orthogonal conversion signal generator for effecting orthogonal conversion of an input signal by the orthogonal function signal generated from the orthogonal function generator, the field video signal converter and the orthogonal conversion signal generator being connected in series, and a correction signal generator for generating a correction signal to be included in the data signal so that an effective voltage applied to a pixel in a non-selection time is substantially constant to any pixel.
REFERENCES:
patent: 4910683 (1990-03-01), Bishop
"Some New Addressing Techniques for RMS Responding Matrix LCD's" by T.N. Ruckmongathan. Thesis Submitted for the Degree of Doctor of Philosophy, Dept. of Electrical Communication Engineering Indian Institute of Science, Feb. 1988.
"New Addressing Techniques for Multiplexed Liquid Crystal Displays", by T.N. Ruckmongathan and N.V. Madhusudana, Proceedings of the SID, V. 24/3, 1983.
1988 Int'l Display Research Conference, "A Generalized Addressing Technique for RMS Responding Matrix LCDS", by T.N. Ruckmongathan, pp. 80-85.
Proceedings of the Twelfth Intern. Display Research Conference, Oct. 1992, T.N. Ruckmongathan, et al., pp. 65-68, "A New Addressing Technique for Fast Responding STN LCDs".
A. Kmetz, J. Nehring. "Ultimate Limits for RMS Matrix Addressing" Symp. Phys & Chem Liquid Crystal Dev. 7-8 Feb., 1979. Plenum 1980.
Asari Goro
Kuwata Takeshi
Nakagawa Yutaka
Ruckmongathan Temkar N.
Asahi Glass Company Ltd.
Wu Xiao
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