Patents by Inventor Theodore Yu

Theodore Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Correcting for emitted light wavelength variation in blood-oxygen saturation measurements at wearable electronic device
    Patent number: 12197694
    Abstract: 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.
    Type: Grant
    Filed: June 28, 2023
    Date of Patent: January 14, 2025
    Assignee: Apple Inc.
    Inventors: Ravi K. Shaga, Paul D. Mannheimer, Theodore Yu
  • Correcting for Emitted Light Wavelength Variation in Blood-Oxygen Saturation Measurements at Wearable Electronic Device
    Publication number: 20230341991
    Abstract: 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.
    Type: Application
    Filed: June 28, 2023
    Publication date: October 26, 2023
    Inventors: Ravi K. Shaga, Paul D. Mannheimer, Theodore Yu
  • Correcting for emitted light wavelength variation in blood-oxygen saturation measurements at wearable electronic device
    Patent number: 11723563
    Abstract: 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.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: August 15, 2023
    Assignee: Apple Inc.
    Inventors: Ravi K. Shaga, Paul D. Mannheimer, Theodore Yu