US Patent Application 18215694. Correcting for Emitted Light Wavelength Variation in Blood-Oxygen Saturation Measurements at Wearable Electronic Device simplified abstract
Correcting for Emitted Light Wavelength Variation in Blood-Oxygen Saturation Measurements at Wearable Electronic Device
Organization Name
Inventor(s)
Ravi K. Shaga of Sunnyvale CA (US)
Paul D. Mannheimer of Los Altos CA (US)
Theodore Yu of San Jose CA (US)
Correcting for Emitted Light Wavelength Variation in Blood-Oxygen Saturation Measurements at Wearable Electronic Device - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 18215694 Titled 'Correcting for Emitted Light Wavelength Variation in Blood-Oxygen Saturation Measurements at Wearable Electronic Device'
Simplified Explanation
The abstract describes a measurement engine in a wearable electronic device that can compensate for variations in the wavelength of light used to measure blood-oxygen saturation. This compensation is achieved by taking into account temperature data, drive current data, and calibration information. The measurement engine uses this data in different ways, such as using lookup tables or calibration curves, to determine estimated blood-oxygen saturation values.
Original Abstract Submitted
A measurement engine of a wearable electronic device may compensate for wavelength variations of light emitted as part of blood-oxygen saturation measurements. In some cases, determining an estimated blood-oxygen saturation value is based at least partially on temperature data that may be used to compensate for temperature-based wavelength variations of the emitted light, drive current data that may be used to compensate for drive-current-based wavelength variations of the emitted light, and/or calibration information that may be used to compensate for manufacturing variability across different light emitters. In various embodiments, the measurement engine may use temperature data, the drive current data, and/or calibration information in a variety of ways to determine estimated blood-oxygen saturation values, including using lookup tables or calibration curves, applying functions, and the like.
