Device and a method for detecting motor vehicles and their approach angles
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United States of America Patent
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Sep 10, 2013
Grant Date -
Jul 14, 2011
app pub date -
Jul 18, 2008
filing date -
Aug 29, 2007
priority date (Note) -
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Abstract
A device and a method for detecting motor vehicles and their approach angles by passive or active transponders which are provided on the motor vehicles is described, which can be triggered by a transceiver device to transfer information stored in the transponders. It is recommended that on a motor vehicle at least two transponders are arranged with a restricted emission angle range and a different emission direction, and that information suitable for identifying the motor vehicle is stored in the transponders.
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