Multiple channel analog-to-digital converter with automatic cali

Details Multiple channel analog-to-digital converter with automatic cali Multiple channel analog-to-digital converter with automatic cali

1974-07-15

1976-06-01

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, H03K 1320

Patent

active

039613259

ABSTRACT:
An analog-to-digital converter for converting simultaneously a plurality of analog signals into their digital equivalence. The analog-to-digital converter is comprised of a ramp generator, a digital counter, control means, a plurality of output buffers and a plurality of analog comparators. The control unit maintains the digital counter and ramp generator in a fixed relationship such that the analog-to-digital converter automatically compensates for variations in the counter and/or ramp generator operations. The control means maintains the time correspondence of a full scale digital count within the digital counter with a full scale analog value of the ramp output generated by the ramp generator. The control unit resets the digital counter to zero upon the occurrence of a designated zero analog value of the ramp output such that the time between the analog zero value and the analog full scale value will correspond to a constant number of counts of the counter.

REFERENCES:
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patent: 3665305 (1972-05-01), Petrohilos
patent: 3678505 (1972-07-01), Mostyn
patent: 3750142 (1973-07-01), Barnes

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