Method of and remote control apparatus for remotely controlling

Details Method of and remote control apparatus for remotely controlling Method of and remote control apparatus for remotely controlling

1978-08-23

1980-07-08

Yusko, Donald J.

Communications: electrical

Digital comparator systems

340148, H04B 700, H04Q 912

Patent

active

042119987

ABSTRACT:
In a method of remotely controlling a medical appliance frequency signal impulses and group frequency impulses are transmitted alternately from a transmitter to a receiver.
In order to improve freedom from interference, the group frequency impulses are amplified in the transmitter and/or receiver by at least 3 dB less than the frequency signal impulses corresponding to command signals.
For the same purpose, in a remote control arrangement for performing the method, the amplifier provided in the receiver exhibits at the group frequency a gain factor lower by at least 3 dB than at the frequencies of the frequency signal impulses.

REFERENCES:
patent: 3472965 (1969-10-01), Blossom
patent: 3801918 (1974-04-01), Milne et al.
patent: 4024502 (1977-05-01), Eberwein et al.

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