Wireless link between vehicles and a stationary installation
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United States of America Patent
Stats
-
Jan 26, 1982
Grant Date -
N/A
app pub date -
Jan 23, 1980
filing date -
Jan 23, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A communications link between land vehicles and a stationary vehicle service installation is formed by a modulated optical link between transmitters mounted on the vehicles and receivers at the installation, the radiation and reception patterns of said transmitters and receivers being restricted so that communication is only possible between a particular receiver and the transmitter on a vehicle when that vehicle is within a restricted range of locations. To prevent interference between different receiver/transmitter pairs, the receivers are mounted at a different level from the transmitters, and the transmitters and receivers have asymmetric fields of radiation and reception.
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