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Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method

  • US 6,748,359 B1
  • Filed: 05/05/2000
  • Issued: 06/08/2004
  • Est. Priority Date: 11/05/1997
  • Status: Expired due to Term
First Claim
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1. A method of emitting acoustic waves from a memory card or a smart card, said card comprising a plurality of precut plastic sheets stacked and affixed so as to hold at least an electro-acoustic transducer having an excitation device, the method comprising the steps of:

  • producing mechanical vibration using the excitation device; and

    transmitting the mechanical vibration directly to the card, thereby causing the card to vibrate and emit the acoustic waves.

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