Remote control system for locking and unlocking doors and other openings in a passenger space, in particular in a motor vehicle
US5499022A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1993 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Nov 4, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/63
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A remote control system for locking and unlocking a passenger space in a motor vehicle has an on-board unit that includes an emitter of signals S.sub.E of a first type and receiver of signals S.sub.P of a second type. There also is a portable device that has a receiver of first type signals S.sub.E and an emitter of second type signals S.sub.P. The apparatus also detects that the portable device has been forgotten inside the passenger space by determining the relative position of the portable device in relation to the interior of the passenger space. The apparatus for determining the position of the portable device in relation to the interior of the passenger space is integrated into the portable device with the portable device emitter of the second type signal S.sub.pforgotten in the event of detection of the portable device having been forgotten inside the passenger space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.