Matrix-vector multiplication apparatus

Details Matrix-vector multiplication apparatus Matrix-vector multiplication apparatus

1989-06-28

1992-03-24

Smith, Jerry

Boots, shoes, and leggings

364837, 364713, G06G 716, G06E 300

Patent

active

050994484

ABSTRACT:
A matrix-vector multiplication apparatus for performing a matrix operation at high speed and in a wide dynamic range, i.e., high precision, wherein an input vector is displayed with radiance of pixels, a display image is replicated into many images through an optical system. Component multiplications and partial summing between rows or columns of the matrix and the input vector are simultaneously performed by a light transmissive mask having transmitance proportional to one digit value of multi-scale (three or more) matrix component and a photosensor. Parallel channels each assigned to a different digit of the matrix component calculates the partial sums and a power-of-m (m is the number of scales) scaling summer connected to the parallel channels electrically produces components of an output vector.

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Goodman, J. W. et al., "Parallel Incoherent Optical Matrix Multipliers", Workshop on Future Directions for Optical Information Processing, Final Report, (1981).
Psaltis, D., "Computational Power and Accuracy Trade-Offs in Optical Numerical Processors"; SPIE vol. 614 (1986).
Rhodes, W. T., "Optical Matrix-Vector Processors: Basic Concepts"; SPIE vol. 614 (1986).

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