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Sine saturation transform

  • US 7,467,002 B2
  • Filed: 08/20/2007
  • Issued: 12/16/2008
  • Est. Priority Date: 06/29/2001
  • Status: Active Grant
First Claim
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1. A method for filtering a physiological signal to improve a calculation of a pulse rate, the method comprising:

  • obtaining within a patient monitor a signal indicative of pulse rate information of a patient being monitored;

    obtaining an initial frequency estimate of a pulse rate of the patient with a processor;

    combining at least one sinusoidal waveform with said signal to produce a predetermined response; and

    signal component processing the combined signal with the processor to determine said pulse rate.

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