Vehicular remote locking/unlocking system
US6980082B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Apr 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/63
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a vehicular remote locking/unlocking system, when a locking or unlocking switch outputs a trigger signal, a second transmission device transmits identification information transmission disable signal, before a first transmission device transmits identification information request signal. When a portable device of the vehicular remote system receives the transmission disable signal, even if the portable device receives a subsequent request signal, transmission of identification information from the portable device is disabled for a predetermined period of time, thereby disabling operation of a door lock actuator. Since the second transmission device transmits a transmission disable signal a plurality of times in succession, the influence of noise is eliminated, thereby reliably preventing the portable transceiver within the vehicle from outputting an ID signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.