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SIGNAL PROCESSING APPARATUS

  • US 20130345523A1
  • Filed: 06/10/2013
  • Published: 12/26/2013
  • Est. Priority Date: 10/07/1994
  • Status: Abandoned Application
First Claim
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1. A patient monitoring system configured to determine one or more physiological characteristics of a patient, the system comprising:

  • a plurality of light emitters configured to emit light of at least two different wavelengths into tissue of a patient;

    a detector configured to detect the emitted light after attenuation by the tissue and output a signal indicative of the detected light; and

    a processing system configured to receive and process the detected light and determine information indicative of oxygen saturation, pulse rate and respiration rate, the processing system configured to reduce an effect of motion noise by using at least a frequency domain calculation.

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