Smart key and method of controlling the same
US9875587B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2016 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | May 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/63
- WIPO fieldControl
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.