Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-12-22
1998-05-26
Tung, Kee M.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 87, G09G 336
Patent
active
057573484
ABSTRACT:
A system and method for producing spatially modulated monochrome or color light having gray scale during a given period of time includes a spatial light modulator having a light modulating arrangement switchable between different states so as to act on light in different ways. A switching arrangement switches the modulating arrangement between different states in a controlled way during the period. The system also includes an illumination arrangement for selectively and alternately directing light of constant intensity and varying intensity into the modulating arrangement during predetermined subperiods of the period. In a color version of the system, the illumination arrangement directs light of different colors into the modulating arrangement during predetermined subperiods of the period, thereby providing a system for producing modulated colored light having color gray scale during a given period. In one embodiment of the present invention, the predetermined subperiods include a first plurality of subperiods of unequal lengths of time which, if arranged in order timewise, increase in duration by a factor of two. The predetermined subperiods further include a second plurality of subperiods and the illumination arrangement directs light of variable intensities into the modulator arrangement during each of the second plurality of subperiods which are of equal durations. Each of the different intensities of light double from subperiod to subperiod when the subperiods of equal length are arranged in a particular order.
REFERENCES:
patent: 4090219 (1978-05-01), Ernstoff
patent: 4709995 (1987-12-01), Kuribayashi et al.
patent: 4864290 (1989-09-01), Waters
patent: 4921334 (1990-05-01), Akodes
patent: 4969119 (1990-11-01), Stewart
patent: 4978952 (1990-12-01), Irwin
patent: 5061049 (1991-10-01), Hornbeck
patent: 5083857 (1992-01-01), Hornbeck
patent: 5093652 (1992-03-01), Bull et al.
patent: 5096279 (1992-03-01), Hornbeck
patent: 5122791 (1992-06-01), Gibbons et al.
patent: 5128782 (1992-07-01), Wood
patent: 5170156 (1992-12-01), DeMond et al.
patent: 5189406 (1993-02-01), Humphries et al.
patent: 5192946 (1993-03-01), Thompson et al.
patent: 5206629 (1993-04-01), DeMond et al.
patent: 5214420 (1993-05-01), Thompson et al.
patent: 5233447 (1993-08-01), Kuribayashi et al.
patent: 5239227 (1993-08-01), Kikinis
patent: 5254980 (1993-10-01), Hendrix et al.
patent: 5255100 (1993-10-01), Urbanus
patent: 5278652 (1994-01-01), Urbanus et al.
patent: 5280277 (1994-01-01), Hornbeck
patent: 5303055 (1994-04-01), Hendrix et al.
patent: 5337068 (1994-08-01), Stewart et al.
patent: 5339090 (1994-08-01), Crossland et al.
patent: 5339116 (1994-08-01), Urbanus et al.
patent: 5349366 (1994-09-01), Yamazaki et al.
patent: 5359345 (1994-10-01), Hunter
patent: 5365283 (1994-11-01), Doherty et al.
patent: 5420602 (1995-05-01), Kanazawa
patent: 5444557 (1995-08-01), Spitzer et al.
patent: 5461397 (1995-10-01), Zhang et al.
patent: 5483307 (1996-01-01), Anderson
patent: 5497172 (1996-03-01), Doherty et al.
patent: 5499062 (1996-03-01), Urbanus
patent: 5506597 (1996-04-01), Thompson et al.
patent: 5519520 (1996-05-01), Stoller
patent: 5523803 (1996-06-01), Urbanus et al.
patent: 5589852 (1996-12-01), Thompson et al.
L.K. Cotter, T.J. Drabik, R.J. Dillon and M.A. Handschy; "Ferroelectric-Liquid-Crystal Silicon-Integrated-Circuit Spatial Light Modulator"; Mar. 1, 1990; Opt. Lett. 15,191.
I. Underwood, et. al.; "A High Performance Spatial Light Modulator"; Jul. 21, 1991; SPIE vol. 1562, 107.
W.A. Crossland, M.J. Birch, A.B. Davey and D.G. Vass; "Active Backplane Spatial Light Modulators Using Chiral Smectic Liquid Crystals"; Feb. 9, 1992; SPIE vol. 1665, 114.
Ian Underwood, David G. Vass, Antony O'Hara, Dwayne C. Burns, Peter W. McOwan and James Gourlay; "Improving the Performance of Liquid-Crystal-Over-Silicon Spatial Light Modulators: Issues and Achievements"; May 10, 1994; Applied Optics 33,2768.
E.V. Stine and M. Chmielowski; "High-Refresh-Rate Color Sequenced LCD"; Jun. 14, 1994; SID Digest of Technical Papers 25,544.
J.B. Sampsell; "An Overview of the Performance Envelope of Digital-Micromirror-Device-Based Projection Display Systems"; Jun. 14, 1994; SID Digest of Technical Papers 25,669.
J. C. White, "Colour LCD TV", May 1988, Physics in Technology, vol. 19, No. 3, pp. 91-100.
Handschy Mark A.
Meadows Michael R.
Morrison Bryan T.
Beyer Jay
Displaytech, Inc.
Shear Stephen C.
Suraci John
Tung Kee M.
LandOfFree
Active matrix liquid crystal image generator with hybrid writing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active matrix liquid crystal image generator with hybrid writing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active matrix liquid crystal image generator with hybrid writing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1967158