Smart key and method of controlling the same
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United States of America Patent
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Jan 23, 2018
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N/A
app pub date -
May 2, 2016
filing date -
Jan 4, 2016
priority date (Note) -
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Abstract
A smart key for a vehicle includes: a communication unit including a low frequency (LF) antenna which receives an LF signal; and a control unit determining a strength and a direction vector of the LF signal. The control unit estimates a first location of the smart key based on the strength of the LF signal, estimates a second location of the smart key based on the direction vector of the LF signal, and determines a presence of a relay attack by analyzing the first location and the second location and comparing the first location with the second location.
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