System for controlling operations of GPS receiver unit and radio

Details System for controlling operations of GPS receiver unit and radio System for controlling operations of GPS receiver unit and radio

1990-10-26

1994-04-05

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455133, 455140, 379 58, 342419, H04B 1702

Patent

active

053013689

ABSTRACT:
An operation control system includes a GPS receiver unit and a radio telephone unit. The GPS receiver unit includes a GPS antenna and a GPS signal receiver circuit connected thereto. The radio telephone unit includes a telephone antenna and a transmitter circuit connected thereto. The transmitter circuit transmits a call channel signal through the telephone antenna during the radio telephone unit being in an ON-CALL MODE and a control channel signal during an OFF-CALL MODE. The system is designed to set the transmitter circuit operative and the GPS signal receiver circuit inoperative during the ON-CALL MODE. On the other hand, the system allows alternate operations of the transmitter circuit and the GPS signal receiver circuit during the OFF-CALL MODE.

REFERENCES:
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patent: 5056153 (1991-10-01), Taniguchi
Toshiyuki Itoh, et al., "Navigation Systems Using GPS for Vehicles", Society of Automotive Engineers, Inc., Passenger Car Meeting & Exposition, Sep. 22-25, 1986, pp. 1-13.
Civil GPS from a Future Perspective, T. A. Stansell, Jr., IEEE, vol. 71, No. 10, Oct. 1983.

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