Secure vehicle access system, key, vehicle and method therefor
US10239494B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Dec 13, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/69
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A secure vehicle access system comprises a vehicle and a key associated with the vehicle. The key comprises: a radio frequency, RF, key transceiver configured to: broadcast at least one signal; and listen for an acknowledgement message from the vehicle. The vehicle comprises: a radio frequency, RF, vehicle transceiver configured to: listen for the at least one broadcast signal from the key; and in response thereto, transmit an acknowledgement message back to the key to establish a communication link between the vehicle and the key. The key further comprises a ranging circuit configured to perform a distance determination between the vehicle and the key, following the establishment of the communication link, to determine whether to allow access to the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.