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Apparatus for detecting theft by a radio wave

  • US 6,304,182 B1
  • Filed: 12/24/1998
  • Issued: 10/16/2001
  • Est. Priority Date: 12/25/1997
  • Status: Expired due to Fees
First Claim
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1. A burglar detection apparatus for detecting theft of an object contained in a box having a drawer, the apparatus comprising:

  • a tag including a resonance circuit, adapted to be associated with the object;

    a tag detection sensor configured to detect whether the tag is in the drawer, and to provide a tag detection output;

    a drawer sensor configured to detect whether the drawer is open, and to provide a drawer sensor output; and

    a control circuit configured to control an alarm based on the tag detection output and the drawer sensor output.

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