Accession Number : ADD015962

Title :   System for Solving Boolean Equations Using Optical Lookup Tables.

Descriptive Note : Patent, Filed 2 Sep 92, patented 5 Oct 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Reyes, Roy M ; Spence, Scott E

Report Date : 05 Oct 1993

Pagination or Media Count : 8

Abstract : A reconfigurable digital optical lookup table for solving Boolean equations using in array of bistable optical devices is provided. A single light source is divided into a matrix of light beams using binary phase gratings and a lens system. This matrix of beams is modulated by a spatial light modulator symmetric self electro-optic effect device (S-SEED) according to the desired lookup table. The modulated light beams are used to set an S-SEED array with the lookup table. The rows and columns of the S-SEED array are then reset according to the inputs to the Boolean equation. Once all of the inputs have been processed, the S-SEED array will have only one member whose state has not been affected by the inputs, and the value of this S-SEED corresponds to the solution to the Boolean equation. The final result is output by using a matrix of equal intensity light beams and a mask to read out the state of one side of the S-SEEDs, and focusing the result onto a detector.

Descriptors :   *DIGITAL COMPUTERS, *ELECTROOPTICS, *OPTICAL PROCESSING, *PATENTS, *DATA DISPLAYS, ARRAYS, DETECTORS, INPUT, INTENSITY, LIGHT MODULATORS, LIGHT SOURCES, MASKS, OPTICS, OUTPUT, PHASE, OPTICAL DATA

Subject Categories : Electrooptical and Optoelectronic Devices
      Computer Systems Management and Standards

Distribution Statement : APPROVED FOR PUBLIC RELEASE