Signal processing circuit including a variable gain input stage

Details Signal processing circuit including a variable gain input stage Signal processing circuit including a variable gain input stage

1994-06-23

1996-07-30

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

H03M 118

Patent

active

055416004

ABSTRACT:
The invention concerns a processing circuit (2, 120) for producing a variable output signal in response to a variable quantity picked up or received as input. The processing circuit is associated with a stage or has an input sensor (4, 100) furnishing a signal with a variable amplification/attenuation factor, and further exhibits response characteristics which depend in particular from state variables. The processing circuit includes a suppression circuit (FIG. 5, FIG. 6) for suppressing transients normally produced by modification of the amplification/attenuation factor, this suppression circuit functioning by modifying the value of the state variables in direct proportion to the modification of the amplification/attenuation factor.

REFERENCES:
patent: 3921012 (1975-11-01), Marshall, III
patent: 4075701 (1978-02-01), Hofmann
patent: 4185246 (1980-01-01), Schroeder
patent: 4851841 (1989-07-01), Sooch
patent: 5134401 (1992-07-01), McCartney et al.
patent: 5144311 (1992-09-01), Buhler et al.
patent: 5187482 (1993-02-01), Tiemann et al.

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