Accession Number : ADD012854

Title :   Electrooptical Matrix Multiplication Using the Twos Complement Arithmetic for Improved Accuracy.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bocker,Richard P ; Clayton,Stanley R ; Bromley,Keith

Report Date : 27 May 1986

Pagination or Media Count : 11

Abstract : The improved electrooptic signal processing relies upon matrix-matrix multiplication using twos complement arithemtic. A source of pulse collimated light illuminates two two-dimension spatial light modulators that operate in a reflective mode through a polarizing beamsplitter. Each of the spatial light modulators has a matrix of optically encoded information of numbers in the twos complement binary representation so that a mixed binary representation of signals is generated within the two-dimensioned photodetector array. The mixed binary representation signals are decoded to a twos complement binary representation or a decimal representation to be useful for more conventional processing techniques. The twos complement arithmetic when incorporated with the electrooptic architecture provides for a convenient means for handling bipolar numbers, avoids the need for matrix partitioning when the matrices are real and offers a means to improve accuracy over conventional optical analog techniques. (Patents)

Descriptors :   *PATENTS, *BIPOLAR SYSTEMS, *BEAM SPLITTING, *SIGNAL PROCESSING, *ARCHITECTURE, *ELECTROOPTICS, HANDLING, METHODOLOGY, MIXING, NUMBERS, OPTICS, POLARIZATION, PROCESSING, PULSES, REFLECTION, ACCURACY, ANALOGS, SIGNALS, SOURCES, SPATIAL DISTRIBUTION

Subject Categories : Optics
      Numerical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE