×

Method of analyzing and processing signals

  • US 9,220,459 B2
  • Filed: 08/20/2012
  • Issued: 12/29/2015
  • Est. Priority Date: 02/27/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method for determining physiological information, comprising:

  • obtaining, using a signal processor, a photoplethysmographic (PPG) biosignal from a subject at least in part using a signal acquisition unit;

    decomposing, using the signal processor, the PPG biosignal at least in part using a first wavelet transform analysis to generate first transform data;

    decomposing, using the signal processor, the PPG biosignal at least in part using a second wavelet transform analysis to generate second transform data;

    analyzing, using the signal processor, the first transform data and the second transform data; and

    selecting, using the signal processor, features of at least one of the first transform data and the second transform data based at least in part on the analysis to determine physiological information of the subject wherein the physiological information comprises at least one of heart rate of the subject, breathing rate of the subject, and blood oxygen saturation of the subject.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×