Solutions for relay attacks on passive keyless entry and go
US9349236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2012 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Dec 23, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C5/008
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A passive entry system, in particular for a motor vehicle, comprising: a mobile device to be carried by a user, said mobile device comprising a low-frequency transceiver for short range communication, an ultra-high-frequency transceiver for long range communication and information concerning access, such as an access code, which is transmittable by said transceivers; and a locking device which is to be unlocked by the mobile device, said locking device comprising a low-frequency transceiver for short-range communication and an ultra-high frequency transceiver for long range communication to receive said information concerning access, such the access code. The transceivers of the mobile device communicates with the transceiver of the locking device and exchange information concerning access, such as said access code, to the locking system via the respective transceivers, wherein the communication range of the ultra-high-frequency transceiver of the mobile device is limited to a short range in a normal operating mode of the mobile device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.