Method for controlling access to a vehicle
US7928829B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2007 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Jan 29, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/63
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a method for controlling access to a vehicle (FZ), first an authentication signal is sent from the vehicle to an authorized mobile ID transmitter (IDG), with which authentication signal the ID transmitter is authorized to unlock the vehicle. Subsequently, the distance from the valid authorized mobile ID transmitter to the vehicle is determined. Finally, an unlock signal (ES) is transmitted from the valid authorized mobile ID transmitter to the vehicle, if the distance from the ID transmitter to the vehicle is less than a predetermined first proximity distance (ANRE). In this way an efficient control of access to a vehicle is achieved, wherein the mobile ID transmitter automatically unlocks the vehicle when a certain proximity to the vehicle is identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.