Apparatus for controlling transmitter-receiver

Details Apparatus for controlling transmitter-receiver Apparatus for controlling transmitter-receiver

1984-07-16

1987-12-29

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 8, 455 31, 455 79, H04B 140

Patent

active

047165766

ABSTRACT:
An apparatus for controlling a transmitter-receiver which can transmit and receive an aural signal and a data signal. In the transmission mode, the control apparatus detects a data transmission instruction of the transmitter-receiver and changes to the mode in that the data signal is supplied to the transmission unit of the transmitter, thereby executing the data transmission. On the other hand, in the reception mode, the control apparatus discriminates that the signal received is the transmission data to the transmitter-receiver and reduces the output volume of the receiving unit, thereby allowing the transmitter-receiver to receive the reception signal as the data signal.

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patent: 3823375 (1974-07-01), Wycoff
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patent: 4131849 (1978-12-01), Freeburg et al.
patent: 4271499 (1981-06-01), Leveque
patent: 4352201 (1982-09-01), Miller
patent: 4384356 (1983-05-01), Beerbaum
patent: 4430742 (1984-02-01), Milleker et al.
patent: 4431991 (1984-02-01), Bailey et al.

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