Compatible am stereophonic transmission system

Details Compatible am stereophonic transmission system Compatible am stereophonic transmission system

H - Electricity

04

H

325/37

H04H 5/00 (2006.01)

Patent

CA 1038933

COMPATIBLE AM STEREOPHONIC TRANSMISSION SYSTEM ABSTRACT OF THE DISCLOSURE Amplitude modulation (AM) stereophonic transmission system characterized by the modulation of a radiant energy carrier wave with two stereo related signals, each appearing as a first order single-sideband, the carrier wave being preferably also modulated with an infrasonic frequency (e.g. 15 Hz) signal indicating stereo signal presence (with such infrasonic frequency modulation being either amplitude modulated or phase modulated). In the preferred embodiment the frequency doublers are of the constant gain type and the level of the second harmonic phase modulation is determined by a level squarer type circuit. Reception of the transmitted stereo modulated carrier wave can be by two spaced, conventional envelope detector type AM re- ceivers, each slightly off-tuned respectively above and below the carrier frequency (which made of reception renders the stereo transmission technique compatible with existing AM receivers). Alternatively, improved reception of the stereo modulated carrier wave can be by special receiver circuitry of various types as set forth in related concurrently filed applications.

230618

Affiliated with

Also associated with

Rating

Compatible am stereophonic transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compatible am stereophonic transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compatible am stereophonic transmission system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-961706