James R Weigand

US Patent:

43407820, Jul 20, 1982

Filed:

Jun 13, 1980

Appl. No.:

6/159357

Inventors:

James R. Weigand - Fort Wayne IN
Robert D. Streeter - Fort Wayne IN

Assignee:

Magnavox Consumer Electronics Co. - Fort Wayne IN

International Classification:

H04H 500

US Classification:

179 1GS

Abstract:

A superheterodyne receiver is described for demodulating signals containing both amplitude and angle modulation components. An intermediate frequency signal is produced which is simultaneously amplitude detected as well as angle demodulated. Detector means are provided for detecting the occurrence of high negative amplitude modulation peaks of the broadcast signal. During high negative amplitude modulation peaks, the angle demodulator output is held at a fixed level until the amplitude of an input signal is restored to a predetermined minimum level.