Remote keyless entry transmitter fob with RF analyzer

Details Remote keyless entry transmitter fob with RF analyzer Remote keyless entry transmitter fob with RF analyzer

2006-05-09

2006-05-09

Pope, Daryl C (Department: 2632)

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

C340S426130, C340S426150, C340S426350

Reexamination Certificate

active

07042342

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.

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