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Contact-free chip card for remote transmission

  • US 5,376,778 A
  • Filed: 02/22/1993
  • Issued: 12/27/1994
  • Est. Priority Date: 02/26/1992
  • Status: Expired due to Fees
First Claim
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1. In a contact-free chip card of the type having electronic component means including a microprocessor, a memory, and having at least one coil for the short distance transmission of energy and data" the improvement comprising:

  • an oscillator means for storing electrical energy for contact-free, remote transmission of data; and

    enabling means accessible to a user for selectively connecting said energy storage means to said electronic component means to energize said oscillator and said at least one coil for said remote transmission, said enabling means being responsive to an input.

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