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Wrist watch containing internal tag, radio watch, and antenna for wrist watch

  • US 6,992,952 B2
  • Filed: 11/13/2002
  • Issued: 01/31/2006
  • Est. Priority Date: 11/13/2002
  • Status: Expired due to Fees
First Claim
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1. A wrist watch with internal tag, comprising:

  • a watch case comprising a ring shaped case, a glass lid configured to seal a front side of said ring shaped case, and a rear lid configured to seal a rear side of said ring shaped case;

    a drive section housed in said watch case;

    a display section housed in said watch case, the display section being configured to be driven by said drive section and to display a time instant; and

    an RFID tag housed in said watch case and comprises an antenna and an IC chip;

    wherein said antenna comprises a rod shaped magnetic core member provided between said ring shaped case and said drive section and along the inner surface of said rear lid, and a coil is wound in a helical shape around said magnetic core member.

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