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公开(公告)号:US20220151560A1
公开(公告)日:2022-05-19
申请号:US17592917
申请日:2022-02-04
Applicant: Apple Inc.
Inventor: Sorin V. Dusan , Daniel J. Culbert , Todd K. Whitehurst
IPC: A61B5/00 , A61B5/024 , A61B5/0533 , A61B5/318
Abstract: A wearable device that attaches to a body part of a user via an attachment member operates in at least a connected and a disconnected state. One or more sensors located in the wearable device and/or the attachment member detect the user's body part when present. Such detection may only be performed when the attachment member is in a connected configuration and may be used to switch the wearable device between the connected and disconnected states. In this way, the wearable device operates in the connected state when worn by a user and in the disconnected state when not worn by the user.
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公开(公告)号:US09668676B2
公开(公告)日:2017-06-06
申请号:US15038419
申请日:2013-12-30
Applicant: Apple Inc.
Inventor: Daniel J. Culbert
IPC: A61B5/117 , A61B5/00 , A61B5/0205 , A61B5/024 , A61B5/1455 , G06F21/32 , G06F3/01 , G06K9/00
CPC classification number: A61B5/1171 , A61B5/0205 , A61B5/02416 , A61B5/02438 , A61B5/117 , A61B5/14551 , A61B5/6824 , A61B5/6898 , A61B5/7246 , G06F3/017 , G06F21/32 , G06K9/00355 , G06K9/00885 , G06K2009/00939
Abstract: A light emitter and light sensor pair can be used to determine one or more characteristics of a user's vasculature. For example, a pulse oximeter employs a light emitter and a light sensor to measure the percentage of oxygenated blood in a subject. In examples of the present disclosure, light emitters and light sensors can be used to perform biometric identification of a user based on identifying characteristics of the user's vasculature. For example, light information can be obtained at one or more light sensors, and the information can be compared to stored information associated with a user identity. Based on the comparison, the user of the device can be identified as having the user identity.
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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.
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公开(公告)号:US10145980B2
公开(公告)日:2018-12-04
申请号:US15703889
申请日:2017-09-13
Applicant: Apple Inc.
Inventor: Robert T. Aloe , Sankalita Saha , Stephen J. Waydo , Daniel J. Culbert
Abstract: Algorithms for detecting whether a device is properly secured to a user's skin are described. The operation of a device, such as a wearable device, can be adjusted based on whether the device is properly secured to a user's skin (e.g., on-wrist) or not properly secured to the user's skin (e.g., off-wrist). For example, certain functions can be disabled for power-saving, security or other purposes if the device is off-wrist. In order to avoid falsely identifying the device as off-wrist or on-wrist, algorithms for detecting whether the device is on-wrist or off-wrist can calculate one or more variances based on signals measured by a light sensor and compare the one or more variances with one or more thresholds. Comparing the one or more variances to the one or more threshold can improve the accuracy of wrist-detection algorithms.
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公开(公告)号:US20180110469A1
公开(公告)日:2018-04-26
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 , A61B5/024 , A61B5/11 , A61B5/0205
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.
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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
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.
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7.
公开(公告)号:US20140089694A1
公开(公告)日:2014-03-27
申请号:US13629365
申请日:2012-09-27
Applicant: APPLE INC.
Inventor: Daniel J. Culbert
CPC classification number: G06F1/329 , G06F9/4893 , Y02D10/24
Abstract: The present embodiments provide a system that dynamically controls power consumption in a computing device. During operation, the system measures the performance of the computing device while executing a work-loop. Next, the system determines a derived completion time for the work-loop based on the measured performance. (For example, the derived completion time can be an expected completion time, a maximum completion time, or more generally a completion time distribution.) The system then determines a deadline-proximity for the work-loop based on a comparison between the derived completion time and a deadline for the work-loop. (For example, the deadline-proximity can be an expected deadline-proximity, a minimum deadline-proximity, or more generally a deadline-proximity distribution.) Finally, the system controls the power consumption of the computing device based on the determined deadline-proximity for the work-loop.
Abstract translation: 本实施例提供了一种动态地控制计算设备中的功率消耗的系统。 在操作期间,系统在执行工作循环时测量计算设备的性能。 接下来,系统基于测量的性能确定工作循环的导出完成时间。 (例如,导出的完成时间可以是预期的完成时间,最大完成时间,或更通常的完成时间分布。)然后,系统基于导出的完成之间的比较来确定工作循环的最后期限 - 接近度 时间和工作循环的最后期限。 (例如,最后期限 - 接近度可以是期望的截止日期 - 接近度,最小期限 - 接近度,或更通常的截止日期 - 邻近分布)。最后,系统基于确定的截止时间来控制计算设备的功耗, 接近工作循环。
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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.
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公开(公告)号:US20200060617A1
公开(公告)日:2020-02-27
申请号:US16669333
申请日:2019-10-30
Applicant: Apple Inc.
Inventor: Sorin V. Dusan , Daniel J. Culbert , Todd K. Whitehurst
IPC: A61B5/00 , A61B5/024 , A61B5/0402 , A61B5/053
Abstract: A wearable device that attaches to a body part of a user via an attachment member operates in at least a connected and a disconnected state. One or more sensors located in the wearable device and/or the attachment member detect the user's body part when present. Such detection may only be performed when the attachment member is in a connected configuration and may be used to switch the wearable device between the connected and disconnected states. In this way, the wearable device operates in the connected state when worn by a user and in the disconnected state when not worn by the user.
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公开(公告)号:US09766370B2
公开(公告)日:2017-09-19
申请号:US14845156
申请日:2015-09-03
Applicant: Apple Inc.
Inventor: Robert T. Aloe , Sankalita Saha , Stephen J. Waydo , Daniel J. Culbert
CPC classification number: G01V8/12 , A61B5/0059 , A61B5/11 , A61B5/681 , A61B5/6844 , A61B2562/0219
Abstract: Algorithms for detecting whether a device is properly secured to a user's skin are described. The operation of a device, such as a wearable device, can be adjusted based on whether the device is properly secured to a user's skin (e.g., on-wrist) or not properly secured to the user's skin (e.g., off-wrist). For example, certain functions can be disabled for power-saving, security or other purposes if the device is off-wrist. In order to avoid falsely identifying the device as off-wrist or on-wrist, algorithms for detecting whether the device is on-wrist or off-wrist can calculate one or more variances based on signals measured by a light sensor and compare the one or more variances with one or more thresholds. Comparing the one or more variances to the one or more threshold can improve the accuracy of wrist-detection algorithms.
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