Communication method for locating a parked vehicle
US8004400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2008 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Oct 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/14
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of locating a parked vehicle that is equipped with a RKE system including a vehicle-installed RF communication module and a driver-borne wireless RF nomadic device such as a key fob involves installing a RFID tag in the nomadic device and a RFID interrogator in the vehicle. The driver depresses a button on the nomadic device to transmit a location request to the vehicle's communication module, and the RFID interrogator in turn emits a RF interrogation signal to identify the RFID tag and determine its location relative to the vehicle. The communication module then transmits a compass bearing to the nomadic device, and an indicator of the nomadic device is activated to provide the driver with a bearing for locating the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.