Remote control for radiotelephones

Details Remote control for radiotelephones Remote control for radiotelephones

1979-05-03

1981-09-22

Ng, Jin F.

Telecommunications

Transmitter and receiver at same station

Transceiver controlling a separate transceiver or receiver

455151, 455352, 455603, 340694, H04B 140, H04B 900, H04B 1100

Patent

active

042914116

ABSTRACT:
A radiotelephone system having a control transmitter unit which includes a control unit having operating keys, a channel indicator device, a function indicator device and a loudspeaker/microphone device, the control transmitter unit including an ultrasonic or infrared transmitter for the transmission of the function signals required for operation of the radiotelephone system, the radiotelephone system further having a receiver unit provided with an ultrasonic or infrared receiver for actuating function and indicator devices.

REFERENCES:
patent: 3699443 (1972-10-01), Weger
patent: 3745462 (1973-07-01), Trimble
patent: 3906366 (1975-09-01), Minami et al.
patent: 4032844 (1977-06-01), Imazeki
patent: 4081747 (1978-03-01), Meyerle
patent: 4107611 (1978-08-01), Holcomb et al.
patent: 4147984 (1979-04-01), Caudel et al.
patent: 4153877 (1979-05-01), Fathauer et al.

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