×

Signal processing apparatus

  • US 20060217609A1
  • Filed: 05/11/2006
  • Published: 09/28/2006
  • Est. Priority Date: 03/07/1991
  • Status: Active Grant
First Claim
Patent Images

1. A method of determining blood oxygen saturation of pulsing blood, the method comprising:

  • receiving a plurality of intensity signals from light-sensitive detector over a period of time, wherein the light-sensitive detector detects light of a plurality of wavelengths attenuated by body tissue carrying pulsing blood; and

    calculating a representative value of blood oxygen saturation based on an assumption that oxygen saturation of pulsing blood remains relatively constant over a predetermined portion of the period of time.

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