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Angle distribution technique for analyzing a physiological sensor signal

  • US 9,370,308 B2
  • Filed: 05/01/2012
  • Issued: 06/21/2016
  • Est. Priority Date: 05/01/2012
  • Status: Active Grant
First Claim
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1. A method for determining a physiological parameter, comprising:

  • using a processor;

    receiving a signal from a sensor, wherein the signal comprises at least two components;

    determining a plurality of angles formed by a respective plurality of individual points of a Lissajous plot derived from the at least two components and wherein the angles comprise angles formed between a first line passing through an initial point selected from the plurality of individual points of the Lissajous plot and a second line passing through an individual point selected from another of the plurality of individual points of the Lissajous plot and the initial point;

    determining a distribution of the angles; and

    determining a physiological parameter based at least in part on the distribution of the angles.

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