Liquid crystal disc memory system

Details Liquid crystal disc memory system Liquid crystal disc memory system

1981-01-02

1983-09-20

Stellar, George G.

Static information storage and retrieval

Radiant energy

Liquid crystal

369109, 369275, 369284, 369288, G11B 700, G11B 724

Patent

active

044059930

ABSTRACT:
An optical erasable liquid crystal disc memory system is provided which includes a rotating liquid crystal information storage medium confined by two surfaces. Various thin films on the surfaces are used to establish the proper conditions within the liquid crystal medium which, in combination with incident radition and applied voltages, accomplish the read, write, and erase functions.
The resulting system provides a locally erasable optical disc memory with high density storage, long-term information stability under a wide range of temperature, and read, write, and erase times compatible with modern high speed computers.

REFERENCES:
patent: 3592526 (1971-07-01), Dreyer
patent: 3657928 (1972-04-01), Melamed
patent: 3768886 (1973-10-01), Sharpless
patent: 3796999 (1974-03-01), Kahn
patent: 4037929 (1977-07-01), Brkot et al.
patent: 4190330 (1980-02-01), Berreman
patent: 4279152 (1981-07-01), Crossland
IEEE Spectrum, Feb. 1979, pp. 33-38, "An Optical Disk Replaces 25 Mag Tapes", Kenney et al.
IEEE Spectrum, Aug. 1978, pp. 20, 22, 24, 26 & 28, "Optical Disk Systems Emerge", R. A. Bartolini et al.
SID 77 Digest, pp. 108-109, "9.3: A 2000-Character Thermally-Addressed Liquid Crystal Projection Display", A. G. Dewey et al.
Physical Review Letters, vol. 32, No. 25, June 24, 1974, pp. 1406-1409, "Volumetric Study of the Nematic-Smectic-A Transition of N--p--Cyanobenzylidene--p--Octyloxyaniline", S. Torza et al.
Le Journal De Physique, Tome 38, Sep. 1977, pp. 1105-1115, less p. 1113, No. 9, "The Parabolic Focal Conic : A New Smectic A Defect", C. S. Rosenblatt et al.
Physical Review A, vol. 14, No. 4, Oct. 1976, pp. 1551-1554, "Pretransitional Mechanical Effects in a Smectic-A Liquid Crystal", N. A. Clark.

Affiliated with

Also associated with

Rating

Liquid crystal disc memory system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystal disc memory system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal disc memory system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-591119