Oxygen saturation measurements
AssigneeMeta Platforms Technologies, LLC
InventorsAashna Hemkumar, Xiyu Duan
Life of this patent
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Abstract
A wearable device includes a light source, a light sensor, and processing logic. The light source is configured to emit illumination light. The light sensor configured to generate light measurements of returning light. The processing logic is configured to generate the light measurements with the light sensor to produce oxygen saturation measurements. The processing logic is also configured to, when the light measurements are below a light threshold, increase a sampling rate of subsequent light measurements by the light sensor and reduce an analog offset of the subsequent light measurements.
Claims20
A wearable device comprising:
- a light source configured to emit illumination light;
- a light sensor configured to generate light measurements of returning light, wherein the returning light is a portion of the illumination light;
- and
- processing logic configured to:
- generating the light measurements with the light sensor to produce oxygen saturation measurements;
- and
- when the light measurements are below a light threshold:
- (1) increasing a sampling rate of subsequent light measurements by the light sensor;
- and (2) reducing an analog offset of the subsequent light measurements.
A method comprising:
- generating light measurements with a light sensor of a wearable to produce oxygen saturation measurements;
- and
- when the light measurements are below a light threshold:
- increasing a sampling rate of subsequent light measurements for generating subsequent oxygen saturation measurements;
- and
- reducing an analog offset of the subsequent light measurements.
A method comprising:
- receiving a skin perfusion value;
- generating first light measurements with a light sensor of a wearable at a first sampling rate when the skin perfusion value is within a pre-determined value range;
- and
- generating second light measurements with the light sensor of the wearable at a second sampling rate when the skin perfusion value is outside the pre-determined value range.
Dependencies are inferred from the claim text.