Selection of ensemble averaging weights for a pulse oximeter based on signal quality metrics
First Claim
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1. A method of ensemble averaging signals in a pulse oximeter, comprising:
- receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to two different wavelengths of light;
obtaining an assessment of the signal quality of said electromagnetic signals;
selecting weights for an ensemble averager using said assessment of signal quality; and
ensemble averaging said electromagnetic signals using said ensemble averager.
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Abstract
A method and a system for ensemble averaging signals in a pulse oximeter, including receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to two different wavelengths of light, obtaining an assessment of the signal quality of the electromagnetic signals, selecting weights for an ensemble averager using the assessment of signal quality, and ensemble averaging the electromagnetic signals using the ensemble averager.
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Citations
18 Claims
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1. A method of ensemble averaging signals in a pulse oximeter, comprising:
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receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to two different wavelengths of light;
obtaining an assessment of the signal quality of said electromagnetic signals;
selecting weights for an ensemble averager using said assessment of signal quality; and
ensemble averaging said electromagnetic signals using said ensemble averager. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for ensemble averaging signals in a pulse oximeter, comprising:
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means for receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to two different wavelengths of light;
means for obtaining an assessment of the signal quality of said electromagnetic signals;
means for selecting weights for an ensemble averager using said assessment of signal quality; and
an ensemble averager for ensemble averaging said electromagnetic signals using said weights. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification