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Method and apparatus for battery power conservation in tags

  • US 20070013481A1
  • Filed: 11/03/2005
  • Published: 01/18/2007
  • Est. Priority Date: 06/23/2005
  • Status: Abandoned Application
First Claim
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1. An apparatus comprising:

  • a tag having a battery and having first and second operational modes that are different, said tag using substantially less power from said battery in said first operational mode than in said second operational mode;

    wherein in said first operational mode said tag is responsive to receipt of a first wireless signal originating from a remote location and having a first transmission range for shifting from said first operational mode to said second operational mode; and

    wherein in said second operational mode said tag transmits a second wireless signal that is different from said first wireless signal and that has a second transmission range greater than or equal to said first transmission range.

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