Instantaneous gain changing analog to digital converter

Details Instantaneous gain changing analog to digital converter Instantaneous gain changing analog to digital converter

Filed on

1985-06-17

Date issued

1986-05-13

Examiner

Sloyan, T. J.

Patent Class

Communications: electrical

SubClass

Audible indication

SubSubClass

Percussion-type sound producer

Other Related Categories

324 99D, 340347AD, 340347M, 340347CC, H03K 1302

Type

Patent

Status

active

Patent number

045889830

Description

ABSTRACT:
In a dual slope analog to digital converter, the input amplifier has an input selectively connectable to an unknown analog source or a known opposite polarity analog source. The output of the amplifier is directly or indirectly connectable to its other input to change the gain of the output. A microprocessor controls the converter to sequentially connect the unknown analog source, instantaneously change the output connection to change gain where appropriate, and connect the known analog source.

REFERENCES:
patent: 3448446 (1969-06-01), James et al.
patent: 3582777 (1971-06-01), Wunderman
patent: 3895376 (1975-07-01), Uchida
patent: 3906486 (1975-09-01), Phillips
patent: 4337517 (1982-06-01), Nickel et al.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. I-2 & I-3; III-1 to III-5.

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