Vehicular remote control system
US7142090B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 3, 2003 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Dec 26, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/61
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vehicular remote control system includes, on a portable device side, a portable device side first receiver, a portable device side transmitter, and a portable device side second receiver and, on a vehicle side, a vehicle side first transmitter, a vehicle side second transmitter, and a vehicle side receiver. Transmitting and receiving a request signal requesting an identification signal, the identification signal, an interrogation signal, and a response signal between the portable device and the vehicle allows a door lock actuator to be operated if the portable device is legitimate. When the vehicle side second transmitter or the portable device side second receiver breaks down, transmission and reception of a second request signal and the interrogation signal is carried out using the vehicle side first transmitter and the portable device side first receiver, thereby making the door lock actuator operate unhindered without the need for providing special alternative means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.