Vehicle security system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Aug 30, 2007
app pub date -
Feb 27, 2006
filing date -
Feb 24, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A vehicle security system for use in a predefined area such as a car park includes an array of sensors (9) for receiving a vehicle alarm signal transmitted by radio frequency from a system-subscribing vehicle fitted with a transceiver (22) in the event of attempted vehicle tampering or removal. A control centre (12) receives alarm signals and communicates them to a user as an alarm message. Detection of radio frequency signal jamming or attempted jamming is achieved in one embodiment with noise detectors (39, 139) actively detecting jamming noise or alternatively an arrangement of transmitters and receivers using test transmissions therebetween, whereby transmission failure indicates jamming.
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