Implantable inductively programmed temperature sensing transponder
First Claim
1. A method for determining temperature from a transponder utilizing a thermistor and a running counter comprising the steps of:
- providing a running count which varies as a function of temperature;
latching the count at predetermined time intervals;
determining the difference between the values of successive latched counts;
aggregating the differences;
determining the total elapsed time between a first latched count and a last latched count;
dividing the aggregate by the total time to obtain a frequency; and
converting the frequency to a temperature based upon the temperature frequency characteristics of the thermistor.
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Accused Products
Abstract
A method for determining temperature from a transponder utilizing a thermistor and a running counter comprises providing a running count which varies as a function of temperature; latching the count at predetermined time intervals; determining the difference between the values of successive latched counts; aggregating the differences; determining the total elapsed time between a first latched count and a last latched count; dividing the aggregate by the total time to obtain a frequency; and converting the frequency to a temperature based upon the temperature frequency characteristics of the thermistor.
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Citations
3 Claims
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1. A method for determining temperature from a transponder utilizing a thermistor and a running counter comprising the steps of:
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providing a running count which varies as a function of temperature;
latching the count at predetermined time intervals;
determining the difference between the values of successive latched counts;
aggregating the differences;
determining the total elapsed time between a first latched count and a last latched count;
dividing the aggregate by the total time to obtain a frequency; and
converting the frequency to a temperature based upon the temperature frequency characteristics of the thermistor. - View Dependent Claims (2, 3)
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Specification