Patent · US Expired

Signal processing circuit for multiplication

US5034912A · kind A · utility

0Cited by
7References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 9, 1990
Grant dateJul 23, 1991
Priority date
Expiry dateJan 9, 2010

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06J1/00
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

A multiplication processing circuit requiring no digital-analog converter includes a circuit for multiplying a digital multiplication coefficient by a digital multiplicand and outputting the result of multiplication as an analog current signal. The multiplication processing circuit includes a circuit for decoding the digital multiplication coefficient to generate one or a plurality of control signals, a circuit responsive to the digital multiplicand and to the generated control signal for generating a signal indicating, in decimal notation, the result of multiplication of the digital multiplication coefficient by the digital multiplicand, and a circuit for converting the signal indicating the result of multiplication into an analog current signal of a corresponding magnitude. Each of the control signals indicates at least one digital multiplication coefficient in decimal notation. The circuit for generating the signal indicative of the result of multiplication includes a circuit for logically processing, by logic gates, the control signal and the digital multiplicand. The logic gate circuit includes a circuit for detecting coincidence/non-coincidence between a pattern of the genera…

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.