Multi-channel passive entry system for vehicles
US8354915B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2009 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | May 16, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/2072
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and system for determining whether or not passive entry of a vehicle is permitted, includes allocating separate channels for each authorized key FOB for the vehicle. An indication of manual entry of the vehicle is detected. Upon such detection, a challenge from a transmitter of a passive entry system is output. The challenge is received by more than one key FOB in a vicinity of the vehicle, and outputting a respective remote keyless entry response at an assigned frequency channel for each respective key FOB. The remote keyless entry responses are received at a receiver of the passive entry system, at each respective channel allocated for the respective key FOBs. A determination is then made as to whether or not any of the respective key FOBs are assigned to authorized users of the vehicle, and if so, a vehicle door is set in an unlocked state to allow entry into the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.