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Inductive coupling system for power and data transfer

  • US 5,455,466 A
  • Filed: 07/29/1993
  • Issued: 10/03/1995
  • Est. Priority Date: 07/29/1993
  • Status: Expired due to Term
First Claim
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1. Apparatus for inductively coupling power and data to a portable electronic device, comprising:

  • a first circuit connected to a data source for receiving data signals and connected to a power source for receiving power to amplify said received data signals;

    a second circuit connected to said portable electronic device, said first circuit inducing in said second circuit said received data signals when said second circuit is placed in proximity to said first circuit;

    a circuit connected to said second circuit for demodulating said induced signals, thereby providing data to said device;

    a circuit connected to said second circuit for rectifying said induced signals, thereby providing power to said device and;

    a battery charging circuit connected to said rectifier circuit for charging batteries used to power said device.

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