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METHOD AND SYSTEM FOR CARRYING OUT PHOTOPLETHYSMOGRAPHY

  • US 20120197137A1
  • Filed: 10/04/2010
  • Published: 08/02/2012
  • Est. Priority Date: 10/06/2009
  • Status: Active Grant
First Claim
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1. Method of photoplethysmography, including:

  • processing a signal (46;

    56) based on at least one signal (35;

    50) from at least one sensor (5;

    18-20;

    26;

    63) arranged to capture light from a living subject to extract information on a characteristic of a periodic biological phenomenon,wherein at least one of the signals (35;

    50) from at least one sensor (5;

    18-20;

    26;

    63) is obtained by using at least one of a light source (1;

    11-13) and a filter (6;

    17;

    64) placed before the at least one sensor (5;

    18,19,20;

    26;

    63) tuned to a peak in an absorption spectrum of water.

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