Telecommunications – Transmitter and receiver at separate stations – Short range rf communication
Patent
1979-05-21
1980-11-25
Safourek, Benedict V.
Telecommunications
Transmitter and receiver at separate stations
Short range rf communication
340147SC, H04B 702
Patent
active
042362504
ABSTRACT:
The present invention is directed to a system which accomplishes forwarding or retransmission of signals requiring preemphasis and signals not requiring preemphasis while using a single spare channel for forwarding either type of signal upon failure of a primary channel. This is accomplished by designing each channel to have passive and selectable circuits through which the signal is passed for preemphasis or attenuation depending upon the type of signal used in the primary portion of that communication channel before being applied to the selection switches of the spare channel.
REFERENCES:
patent: 2733296 (1956-01-01), Maggio
patent: 3035169 (1962-05-01), Griffith
patent: 3072748 (1963-01-01), Abraham
patent: 3111624 (1963-11-01), Farkas
patent: 3588700 (1971-06-01), Shiki et al.
Greenberg Howard R.
Hamann H. Fredrick
Lutz Bruce C.
Rockwell International Corporation
Safourek Benedict V.
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