Remote keyless entry transmitter fob with RF analyzer
US7042342B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2004 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Dec 16, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/305
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A portable remote keyless entry fob has a plurality of control elements disposed on the fob for manual activation by a user. A display is provided for displaying information to the user. An RKE transmitter wirelessly transmits RKE messages from the fob to a vehicle-mounted receiver. A wideband receiver receives RF signals broadcast by wireless devices nearby the fob and generates a received signal strength indicator (RSSI) signal in proportion to the RF signals. A controller is coupled to the plurality of control elements, the display, the RKE transmitter, and the wideband receiver wherein the controller has an RKE mode for providing a plurality of remote entry command functions. The controller has a detector mode for detecting presence of a wireless device using a comparison responsive to predetermined signal patterns and the RSSI signal. The controller generates an indication on the display when the wireless device is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.