Secure system for controlling the unlocking of at least one openable panel of a motor vehicle
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United States of America Patent
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Jul 23, 2002
Grant Date -
N/A
app pub date -
May 11, 2000
filing date -
May 11, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for locking/unlocking at least one motor vehicle openable panel comprising transmission/reception devices which are intended for transmitting, from the vehicle, a radio-frequency interrogation signal, which transmission/reception devices are intended to be carried by a user and which, on receipt of the interrogation signal, are intended for transmitting a radio-frequency identification signal so as to actuate the unlocking of the openable panel, which system comprises detection unit which are linked to the transmission/reception devices on the vehicle and which are able to detect, on an identification signal received on the transmission/reception devices, a modification of a parameter of the transmission, between the transmission/reception means of the vehicle and of the user, which may be due to the interposition, between the vehicle and the user, of intermediate transmission/reception devices.
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