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System monitoring programmable implantable transponder

  • US 5,252,962 A
  • Filed: 08/03/1990
  • Issued: 10/12/1993
  • Est. Priority Date: 08/03/1990
  • Status: Expired due to Term
First Claim
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1. A passive transponder comprising encapsulation means including therein receive antenna means for receiving an input signal, transmit antenna means for transmitting an output signal to said signal source, programmable memory means for storing data received by said transponder from said signal source, said programmable memory means being programmed in response to said input signal after completion of manufacture of said transponder, said output signal including said data stored by said programmable memory means, and said output signal being generated in response to said input signal, said transponder transmitting the output signal at either one of a first baud rate allowing programming of said programmable memory means or a second baud rate preventing further programming of the programmable memory means dependent upon the status of said programmable memory means.

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