Method for a start and access system for a motor vehicle
US7705710B2 · kind B2 · utility
22Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Feb 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for start and access verification of a motor vehicle by means of a mobile identification transmitter (3) with an evaluation unit arranged in the identification transmitter (3). At least two antennas (1, 2) arranged in different places on the vehicle in any order: each emit time independently an electromagnetic signal which is measured by a measuring device in the identification transmitter (3), and each simultaneously emit an electromagnetic signal which is measured by the measuring device in the identification transmitter (3). Thus, the security of start and access systems of motor vehicles is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.