Accession Number : ADD012897

Title :   Matrix-Matrix Multiplication Using an Electrooptical Systolic/Engagement Array Processing Architecture.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bocker,Richard P ; Caulfield,Henry J ; Bromley,Keith

Report Date : 29 Jul 1986

Pagination or Media Count : 14

Abstract : A electrooptic systolic array architecture performs matrix-matrix multiplication using incoherent light. The incoherent light is collimated and passed through a polarizing beamsplitter and onto a pair of optically reflecting light valves. Each of the valves has a number of cells which are continuously being updated in a clocked sequence to vary their reflectivity in accordance with the data sequence. As the collimated incoherent light source is pulsed the reflectivity of the cells of the two light valves is reflected back through the polarizing beamsplitter and onto a photodetector array. The photodetector array senses the multiplied signals from the two valves and provides a representative output in the same time frame as the pulsed collimated light source. Another polarizing beamsplitter can be disposed to receive the multiplied signals from the first two valves and combined or multiplied with the input from yet another light valve which is, in turn, received by an additional photodetector array. This sequence can be repeated depending on the number of stages desired. A feedback capability is also provided for when iterative processing is desired. (Patents)

Descriptors :   *PATENTS, *ARRAYS, *CELLS, *PHOTODETECTORS, *ITERATIONS, *PROCESSING, *REFLECTIVITY, *VALVES, INCOHERENT SCATTERING, KERR CELLS, LIGHT SOURCES, PATENTS, BEAM SPLITTING, FEEDBACK, POLARIZATION, REFLECTION, SENSES(PHYSIOLOGY), SEQUENCES, TIME, LIGHT

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE