Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1990-10-19
1993-04-13
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
455 14, H04B 726
Patent
active
052030172
ABSTRACT:
A wireless communication system is adapted to be used as an intercom system in a multiple customer station configuration. A customer service representative portable transceiver communicates wirelessly with a stationary base station to enable the representative to move freely about, and thus be able to perform other tasks. The base station is connected electrically to a group of substantially similar physically spaced apart remote customer drive up stations. Each of the remote stations includes a call initiating device for enabling a customer at a drive up station to request communications with the representative. The base station includes a signal generator, which responds to a call initiating device requesting a communication link. A transmitter responds to the generator to send an attention attracting signal to the representative's transceiver, so that the representative can cause the establishment of an audio communication link to a selected customer station.
REFERENCES:
patent: 4866732 (1989-09-01), Carey et al.
Eisenzopf Reinhard J.
H. M. Electronics, Inc.
Kleinke Bernard L.
Pham Chi H.
Potts Jerry R.
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