公开(公告)号：US11986322B2

公开(公告)日：2024-05-21

申请号：US15848602

申请日：2017-12-20

Applicant: Apple Inc.

Inventor： Ehsan Maani ,  Daniel J. Culbert ,  Ian R. Shapiro

IPC: A61B5/00 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/11

CPC classification number: A61B5/721 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/11 ,  A61B5/725 ,  A61B5/7257 ,  A61B5/7278 ,  A61B5/02416 ,  A61B2560/0493 ,  A61B2562/0219

Abstract: A device for determining a heart rate of a user has a PPG sensor and an accelerometer to compensate for acceleration artifacts within the PPG signal. The device transforms time domain PPG and accelerometer signals into the frequency domain using a Fourier transformation and utilizes the Fourier coefficient magnitudes as indicative of the probability of candidate heart rate values. Candidate heart rate values are determined at sampling times over a time interval and a most probable heart rate path during the time interval is determined using a reward/penalty algorithm.

公开(公告)号：US11422635B2

公开(公告)日：2022-08-23

申请号：US17169048

申请日：2021-02-05

Applicant: Apple Inc.

Inventor： Ehsan Maani

IPC: G06F3/01 ,  G06F1/16 ,  G06F3/00

Abstract: A wearable device with an optical sensor is disclosed that can be used to recognize gestures of a user wearing the device. Light sources can be positioned on the back or skin-facing side of a wearable device, and an optical sensor can be positioned near the light sources. During operation, light can be emitted from the light sources and sensed using the optical sensor. Changes in the sensed light can be used to recognize user gestures. For example, light emitted from a light source can reflect off a wearer's skin, and the reflected light can be sensed using the optical sensor. When the wearer gestures in a particular way, the reflected light can change perceptibly due to muscle contraction, device shifting, skin stretching, or the distance changing between the optical sensor and the wearer's skin. Recognized gestures can be interpreted as commands for interacting with the wearable device.

公开(公告)号：US20240423546A1

公开(公告)日：2024-12-26

申请号：US18667858

申请日：2024-05-17

Applicant: Apple Inc.

Inventor： Ehsan Maani ,  Daniel J. Culbert ,  Ian R. Shapiro

IPC: A61B5/00 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/11

Abstract: A device for determining a heart rate of a user has a PPG sensor and an accelerometer to compensate for acceleration artifacts within the PPG signal. The device transforms time domain PPG and accelerometer signals into the frequency domain using a Fourier transformation and utilizes the Fourier coefficient magnitudes as indicative of the probability of candidate heart rate values. Candidate heart rate values are determined at sampling times over a time interval and a most probable heart rate path during the time interval is determined using a reward/penalty algorithm.

公开(公告)号：US20210157414A1

公开(公告)日：2021-05-27

申请号：US17169048

申请日：2021-02-05

Applicant: Apple Inc.

Inventor： Ehsan Maani

IPC: G06F3/01 ,  G06F1/16 ,  G06F3/00

Abstract: A wearable device with an optical sensor is disclosed that can be used to recognize gestures of a user wearing the device. Light sources can be positioned on the back or skin-facing side of a wearable device, and an optical sensor can be positioned near the light sources. During operation, light can be emitted from the light sources and sensed using the optical sensor. Changes in the sensed light can be used to recognize user gestures. For example, light emitted from a light source can reflect off a wearer's skin, and the reflected light can be sensed using the optical sensor. When the wearer gestures in a particular way, the reflected light can change perceptibly due to muscle contraction, device shifting, skin stretching, or the distance changing between the optical sensor and the wearer's skin. Recognized gestures can be interpreted as commands for interacting with the wearable device.

公开(公告)号：US09867575B2

公开(公告)日：2018-01-16

申请号：US14466890

申请日：2014-08-22

Applicant: Apple Inc.

Inventor： Ehsan Maani ,  Daniel J. Culbert ,  Ian R. Shapiro

IPC: G01N33/48 ,  A61B5/00 ,  A61B5/024 ,  A61B5/0205 ,  A61B5/11 ,  G06G7/58

CPC classification number: A61B5/721 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/02416 ,  A61B5/11 ,  A61B5/725 ,  A61B5/7257 ,  A61B5/7278 ,  A61B2560/0493 ,  A61B2562/0219

Abstract: A device for determining a heart rate of a user has a PPG sensor and an accelerometer to compensate for acceleration artifacts within the PPG signal. The device transforms time domain PPG and accelerometer signals into the frequency domain using a Fourier transformation and utilizes the Fourier coefficient magnitudes as indicative of the probability of candidate heart rate values. Candidate heart rate values are determined at sampling times over a time interval and a most probable heart rate path during the time interval is determined using a reward/penalty algorithm.