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System for monitoring physiological characteristics

  • US 7,022,072 B2
  • Filed: 12/27/2001
  • Issued: 04/04/2006
  • Est. Priority Date: 12/27/2001
  • Status: Expired due to Term
First Claim
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1. A physiological characteristic monitor, comprising:

  • an input device capable of receiving a signal from a sensor, the signal being based on a sensed physiological characteristic value of a user; and

    a processor for analyzing the received signal;

    wherein the processor determines a dynamic behavior of the physiological characteristic value;

    wherein the processor provides an observable indicator based upon the dynamic behavior of the physiological characteristic value so determined;

    wherein analyzing the received signal and determining a dynamic behavior includes repeatedly measuring the physiological characteristic value to obtain a series of physiological characteristic values and analyzing a rate of change of the physiological characteristic value over time from the series of physiological characteristic values;

    wherein analyzing the received signal comprises determining whether a most recent of the series of physiological characteristic values is within a qualifying range; and

    wherein a slope of a line fit to the series of physiological characteristic values is calculated if the most recent of the series of physiological characteristic values is within the qualifying range.

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