公开(公告)号：US20230341991A1

公开(公告)日：2023-10-26

申请号：US18215694

申请日：2023-06-28

Applicant: Apple Inc.

Inventor： Ravi K. Shaga ,  Paul D. Mannheimer ,  Theodore Yu

IPC: G06F3/04815 ,  G06T19/00 ,  G06T19/20 ,  G06T7/55 ,  G06T7/62 ,  G06T7/13 ,  G06F3/03 ,  G06F3/0484 ,  G06T11/20 ,  G06T13/00 ,  G06V20/20

CPC classification number: G06F3/04815 ,  G06T19/006 ,  G06T19/20 ,  G06T7/55 ,  G06T7/62 ,  G06T7/13 ,  G06F3/0304 ,  G06F3/0484 ,  G06T11/203 ,  G06T13/00 ,  G06V20/20 ,  G06F3/0482

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.

公开(公告)号：US12197694B2

公开(公告)日：2025-01-14

申请号：US18215694

申请日：2023-06-28

Applicant: Apple Inc.

Inventor： Ravi K. Shaga ,  Paul D. Mannheimer ,  Theodore Yu

IPC: G06F3/04815 ,  G06F3/03 ,  G06F3/048 ,  G06F3/0482 ,  G06F3/0484 ,  G06T7/13 ,  G06T7/55 ,  G06T7/62 ,  G06T11/20 ,  G06T13/00 ,  G06T19/00 ,  G06T19/20 ,  G06V20/20

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.

公开(公告)号：US11723563B1

公开(公告)日：2023-08-15

申请号：US17018985

申请日：2020-09-11

Applicant: Apple Inc.

Inventor： Ravi K. Shaga ,  Paul D. Mannheimer ,  Theodore Yu

IPC: A61B5/1455 ,  G01K13/00 ,  A61B5/1495 ,  A61B5/00

CPC classification number: A61B5/14552 ,  A61B5/1455 ,  A61B5/1495 ,  A61B5/681 ,  A61B5/7203 ,  G01K13/00 ,  A61B2562/0238 ,  A61B2562/0271 ,  A61B2562/043 ,  A61B2562/046

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.