Title :
An Ultrasonic Remote Control for Home Receivers
Author :
Adler, R. ; Desmares, P. ; Spracklen, J.
Author_Institution :
Zenith Radio Corp., Chicago, Ill.
fDate :
6/1/1957 12:00:00 AM
Abstract :
A remote control system for tv receivers is described which employs ultrasound in the vicinity of 40 kc. Slowly decaying single-frequency signals are produced by striking aluminum rods with a hammer. The receiver employs limiting followed by frequency selection and integration to discriminate against acoustic interference.
Keywords :
Absorption; Acoustic devices; Aluminum; Communication system signaling; Control systems; Optical receivers; Optical transmitters; Resonant frequency; TV receivers; Temperature;
Journal_Title :
Broadcast and Television Receivers, IRE Transactions on
DOI :
10.1109/TBTR2.1957.4502960
