Analog-to digital converter and method

Details Analog-to digital converter and method Analog-to digital converter and method

1983-08-01

1986-02-25

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

324 99D, 328135, 340347CC, 340347AD, 340347M, 377 42, H03K 1302

Patent

active

045730377

ABSTRACT:
A system and method is provided for producing digital signals proportional to selected parameters of an input signal supplied to a modulator. The modulated output of the modulator is supplied to a delaying bistable circuit, and both the original output and the delayed output are then supplied to a gate, together with a clocking signal. The output of the gate includes pulses only when the modulated signal and the delayed modulated signal are simultaneously at the same level. As such, the digital output of the gate is a representation of the amount by which one level of the modulated signal exceeds the other, and is directly proportional to the magnitude of one polarity of the signal input to the modulator. Techniques are described for extracting digital signals proportional to the magnitudes of both the positive and negative half waves of the input signal, full waveform magnitude, and waveform offset and polarity.

REFERENCES:
patent: 4009475 (1977-02-01), DeFreitas
patent: 4031532 (1977-06-01), First
patent: 4083043 (1978-04-01), Breuer
patent: 4291300 (1981-09-01), Bader

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