System monitoring programmable implantable transponder
First Claim
1. A passive encapsulated transponder comprising therein a receive antenna for receiving an input signal from a signal source outside of said encapsulation, and a transmit antenna for transmitting an output signal to said signal source, programmable memory for storing data received by said transponder from said signal source, said programmable memory being programmed in response to said input signal after completion of manufacture of said transponder, said programmable memory having a plurality of memory addresses and said programmable memory outputting an inhibit signal to prevent said input signal from reprogramming said programmable memory once each of said addresses has been accessed during programming;
- said output signal including said data stored by said programmable memory, and said output signal being generated in response to said input signal.
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Accused Products
Abstract
A passive transponder includes a receive antenna for receiving an input signal. A frequency generator and modulator receives the input signal and outputs a data carrier signal having a frequency independent of the input signal frequency. A programmable memory and thermistor are provided to produce user ID data and temperature data which is combined with the output signal.
56 Citations
18 Claims
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1. A passive encapsulated transponder comprising therein a receive antenna for receiving an input signal from a signal source outside of said encapsulation, and a transmit antenna for transmitting an output signal to said signal source, programmable memory for storing data received by said transponder from said signal source, said programmable memory being programmed in response to said input signal after completion of manufacture of said transponder, said programmable memory having a plurality of memory addresses and said programmable memory outputting an inhibit signal to prevent said input signal from reprogramming said programmable memory once each of said addresses has been accessed during programming;
- said output signal including said data stored by said programmable memory, and said output signal being generated in response to said input signal.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- 13. A passive transponder adapted to be implanted in a host comprising receiving antenna means for receiving an input signal, monitoring means for monitoring characteristics of said host and outputting characteristic data in accordance therewith, monitoring means includes thermistor for detecting the temperature of the host and outputting a resistance in response thereto, temperature to frequency converter means for converting the resistance to a frequency, and a data sequencer for gating the frequency value at predetermined time intervals, the frequency being output by the transmission means, transmitting antenna means for transmitting an output signal, said output signal including said characteristic data.
Specification