Motor vehicle equipped with a so-called “hands-free” access system
US6522241B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2000 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Apr 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00531
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An identification device for controlling locking of the opening leaves of the vehicle. The identification device is capable of remotely exchanging data with an identifier carried by a user, so as to allow access to the vehicle. The identification device is connected to a number of external antennas so as to allow dialog between identification device and the identifier. At least one pair of the external antennas have a common area of overlap, so that the identification device is able to detect the presence of an identifier in the common area of overlap when the pair of antennas receives a signal from the same identifier. Each antennas of the pair also has its own area of coverage without any mutual overlap, so that the identification device is capable of detecting the presence of an identifier in one of the two aforementioned areas of coverage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.