Patent Document ID: 7474907
Application ID: 11701173
Patent Flag: 1

Claim One:
1. A method of calculating oxygen saturation, comprising: receiving, via a sensor, first and second electromagnetic radiation signals from a blood perfused tissue portion, the first and second electromagnetic radiation signals corresponding to two different wavelengths of light; and using an oximeter, conditioning signals correlative to the first and second electromagnetic signals to generate first and second conditioned signals; obtaining an assessment of signal quality of the conditioned signals; calculating weights for an ensemble averager from a continuous weighting function using the assessment of signal quality; normalizing the first and second conditioned signals to generate first and second normalized signals; ensemble averaging the normalized signals using the ensemble averager to generate first and second averaged signals; performing a ratio-of-ratios calculation using averaged signals to generate an averaged ratio-of-ratios calculation; and calculating oxygen saturation based on the averaged ratio-of-ratios calculation and calibration coefficients.