Accession Number : ADD014340

Title :   Optical Arithmetic Logic Using the Modified Signed-Digit Redundant Number Representation.

Descriptive Note : Patent, Filed 16 Jun 88, patented 5 Sep 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lasher, Mark E ; Bocker, Richard P ; Drake, Barry L ; Henderson, Thomas B

Report Date : 16 Jun 1988

Pagination or Media Count : 25

Abstract : Optical architectures are presented for performing fully parallel, carry-free computation with a trinary, modified signed-digit number representation to allow addition, subtraction and multiplication. Two different optical schemes involving position and polarization encoding enable the fabrication of modular trinary numbers of different magnitudes. The optical systems made up of redundant three-dimensional modules provide a designer with latitude to simultaneously carry out addition, subtraction or multiplication optically and with reduced complexity. Patents. (jhd)

Descriptors :   *COMPUTER ARCHITECTURE, *OPTICAL PROCESSING, *PATENTS, ARITHMETIC, CODING, PARALLEL PROCESSING, MATHEMATICAL LOGIC, OPTICAL EQUIPMENT, POLARIZATION

Subject Categories : Electrooptical and Optoelectronic Devices
      Cybernetics
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE