Duration and frequency programmable electronic pulse generator

Details Duration and frequency programmable electronic pulse generator Duration and frequency programmable electronic pulse generator

1997-07-03

1999-03-02

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Frequency or repetition rate conversion or control

327175, 327176, 711108, H03B 1900

Patent

active

058776397

ABSTRACT:
A duration and frequency programmable electronic integrated pulse generator comprises an initialization circuit driven by a reference clock signal and an initialization/comparison signal and producing m initialization values, and a periodic count value coded on n bits. An address decoder module produces write-control bits, while a bits comparison matrix including n.times.m comparison cells each including a RAM and CAM memory cell write-addressable by the write-control bits. Each CAM cell stores a bit CAM.sub.ij of an initialization value and produces a complemented value CAM.sub.ij .sym.BL.sub.i , each RAM memory cell of address i, j produces a masking value M.sub.ij, and each comparison cell produces a value HIT.sub.ij =(CAM.sub.ij .sym.BL.sub.i)+M.sub.ij. All the cells of the same line of rank j are coupled by an OR function and produce, each output S.sub.j, a programmed pulse represented by the equation: ##EQU1## according to a harmonic periodic signal of the periodic count value.

REFERENCES:
patent: 4255790 (1981-03-01), Hondeghem
patent: 5226009 (1993-07-01), Arimoto
patent: 5383146 (1995-01-01), Threewitt
Elektor Electronics; Author: A. Rigby; Title: Test Pattern Generator; First page under heading Patterns for Testing.

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