Tracking analog-to-digital converter for AC signals

Details Tracking analog-to-digital converter for AC signals Tracking analog-to-digital converter for AC signals

1979-11-01

1981-09-22

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

332 11D, 340347M, 375 28, H03K 1302

Patent

active

042913004

ABSTRACT:
An electronic circuit is described for providing an analog-to-digital conversion system having an output "delta" format in which a pulse is produced for each defined change in the amplitude of the input signal. The circuit is characterized by minimal hardware complexity and low current drain. In performing its conversion function, the circuit advantageously employs a single capacitor for coupling the input signal into the system as well as for storing precisely controlled voltage increments for effecting the equality of the input signal and a reference potential. The AC coupling afforded by this configuration eliminates the problems attendant with the digitization of a small AC signal superimposed on a large DC component. Additionally, the circuit of the present invention lends itself to the multiplexing of input signals.

REFERENCES:
patent: 3322942 (1967-05-01), Gerard et al.
patent: 3461406 (1969-08-01), Kroll
patent: 3487204 (1969-12-01), Emmerich
patent: 3855555 (1974-12-01), Burkhard et al.
patent: 3956700 (1976-05-01), Condon
patent: 4196419 (1980-04-01), Brown

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