×

Signal processing apparatus

  • US 20040210146A1
  • Filed: 05/04/2004
  • Published: 10/21/2004
  • Est. Priority Date: 03/07/1991
  • Status: Active Grant
First Claim
Patent Images

1. A method of determining a pulse rate of a patient using a patient monitoring device that includes a non-invasive optical probe and signal processing components capable of processing signals received from the non-invasive optical probe and capable of determining the pulse rate, the method comprising:

  • receiving physiological signals representative of attenuation of light of at least first and second wavelengths by body tissue carrying pulsing blood;

    determining at least two values corresponding to pulse rate based upon at least two alternative methods of processing the physiological signals; and

    determining a resulting value for pulse rate from the at least two values corresponding to pulse rate.

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