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Wireless data transmission over quasi-static electric potential fields

  • US 6,336,031 B1
  • Filed: 12/22/1998
  • Issued: 01/01/2002
  • Est. Priority Date: 12/22/1998
  • Status: Expired due to Term
First Claim
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1. A method of data transmission comprising:

  • varying a voltage difference applied across a plurality of transmit electrodes at such a rate that the resulting electric potential field varies in a quasi-static manner, wherein the variation in said voltage difference depends on the data to be transmitted; and

    producing a receive output signal which varies with a signal induced between a plurality of receive electrodes by said quasi-static variations in said electric potential field;

    wherein said step of producing a receive output signal comprises;

    varying a current applied to said receive electrodes in order to keep the potential difference between said receive electrodes constant; and

    producing an output signal which varies with said varying current in order to recover the transmitted data.

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