A-D Converter with fine resolution

Details A-D Converter with fine resolution A-D Converter with fine resolution

1980-08-14

1982-10-12

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347M, 340347CC, H03K 1302, H03K 1320

Patent

active

043541763

ABSTRACT:
An analog input signal to be converted is subjected to first integration by an integrator and a reference signal opposite in polarity to the input analog signal is subjected to second integration by the integrator. After the integrator output has passed a predetermined level, a reference signal opposite in polarity to the abovesaid reference signal is subjected to third integration by the integrator for a predetermined period of time and then a reference signal of the same polarity as that in the second integration is subjected to fourth integration by the integrator at a rate of an integral fraction of the integration rate in the second integration. In the second integration, clock pulses are counted by a counter but the counting is interrupted for a period of time substantially twice as long as the third integration period and, in the fourth integration, the counting is performed at a counting stage of one lower order.

REFERENCES:
patent: Re28706 (1976-02-01), Dorey
patent: 3577140 (1971-04-01), Aasnaes

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