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Efficient RKE energy monitoring strategy

  • US 7,262,684 B2
  • Filed: 10/29/2004
  • Issued: 08/28/2007
  • Est. Priority Date: 10/29/2004
  • Status: Expired due to Fees
First Claim
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1. A method for selectively providing power to at least one component of a vehicle-based receiver module for determining the presence and validity of a transmitted RF signal, said RF signal is a request signal for activating a respective vehicle accessory function, said method comprising the steps of:

  • providing said power to a receiver for a first period of time;

    operating said receiver to receive any RF signal that may be present from a remote transmitting device;

    determining a received signal strength indicator (RSSI) associated with a received RF signal; and

    if said RSSI is between a first predetermined threshold and a second predetermined threshold, then determining a noise characterization parameter;

    if said RSSI is greater than said first predetermined threshold then automatically providing said power to said receiver for an extended period of time; and

    if said RSSI is less than said second predetermined Threshold ten automatically terminating said power to said receiver.

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