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Variable strength wireless communication system

  • US 8,659,388 B2
  • Filed: 07/10/2008
  • Issued: 02/25/2014
  • Est. Priority Date: 07/10/2008
  • Status: Expired due to Fees
First Claim
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1. A method of transmitting a wireless key fob signal comprising:

  • transmitting a first key fob signal at a first transmission field strength, the first key fob signal having a first transmission duration, and the first key fob signal transmitted from a key fob device;

    transmitting a plurality of successive key fob signals from the key fob device after transmitting the first key fob signal, each of the plurality of successive key fob signals having a second transmission field strength and a second transmission duration, wherein the first transmission field strength is less than the second transmission field strength and the first transmission duration is longer than the second transmission duration;

    wherein the plurality of successive key fob signals are transmitted at a frequency that defines a transmission interval between the plurality of successive key fob signals, and the first transmission duration is longer than the transmission interval.

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