Digitalized amplitude detection circuit for analog input signal

Details Digitalized amplitude detection circuit for analog input signal Digitalized amplitude detection circuit for analog input signal

1986-12-04

1988-09-06

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

328149, H03D 100

Patent

active

047696133

ABSTRACT:
A digitalized detection circuit as an envelope detector of an analog input signal is disclosed. This circuit includes an analog-to-digital converter converting the analog input signal into first digital data, storing means for storing second digital data to be outputted, and a comparator comparing the first and second digital data. When the first digital data is equal to or larger (smaller) than the second data, the first digital data is supplied to the storing means, and when the former is smaller (larger) than the latter, the storing means receives cyclically third data that is the second data minus (plus) a predetermined value. A digitalized peak or bottom envelope detector is thereby obtained.

REFERENCES:
patent: 4370620 (1983-01-01), Tin
patent: 4463431 (1984-07-01), Schumaker

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