×

Card for interaction with a computer

  • US 7,334,735 B1
  • Filed: 10/04/1999
  • Issued: 02/26/2008
  • Est. Priority Date: 10/02/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A smart card comprising:

  • a memory for storing information;

    at least one transmitting or receiving antenna, suitable for transmitting or receiving acoustic signals; and

    a low frequency circuit, adapted to handle transmission of information from the memory, or reception of information for storage in the memory, via said antenna on an acoustic carrier, wherein said information is modulated on the acoustic carrier at a frequency of between 5 kHz and 100 kHz.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×