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公开(公告)号：US20250133363A1
公开(公告)日：2025-04-24
申请号：US18902618
申请日：2024-09-30
Applicant: Apple Inc.
Inventor： Xiaoyuan Tu , Margaret H. Tam , Halil Ibrahim Basturk , Alexander Singh Alvarado , Adam S. Howell
IPC: H04S7/00
Abstract: Embodiments are disclosed for head tracking state detection based on correlated motion of a source device and a headset communicatively coupled to the source device. In an embodiment, a method comprises: obtaining, using one or more processors of a source device, source device motion data from a source device and headset motion data from a headset; determining, using the one or more processors, correlation measures using the source device motion data and the headset motion data; updating, using the one or more processors, a motion tracking state based on the determined correlation measures; and initiating head pose tracking in accordance with the updated motion tracking state.
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公开(公告)号：US20250046172A1
公开(公告)日：2025-02-06
申请号：US18920833
申请日：2024-10-18
Applicant: Apple Inc.
Inventor： Xing Tan , Huayu Ding , Parisa Dehleh Hossein Zadeh , Harshavardhan Mylapilli , Hung A. Pham , Karthik Jayaraman Raghuram , Yann Jerome Julien Renard , Sheena Sharma , Alexander Singh Alvarado , Umamahesh Srinivas , Xiaoyuan Tu , Hengliang Zhang , Geoffrey Louis Chi-Johnston , Vivek Garg
IPC: G08B21/04 , A61B5/00 , A61B5/0205 , A61B5/024 , A61B5/11 , G01C5/06 , G01C21/12 , G01S19/13 , G06F3/01 , G08B13/24
Abstract: In an example method, a mobile device obtains a signal indicating an acceleration measured by a sensor over a time period. The mobile device determines an impact experienced by the user based on the signal. The mobile device also determines, based on the signal, one or more first motion characteristics of the user during a time prior to the impact, and one or more second motion characteristics of the user during a time after the impact. The mobile device determines that the user has fallen based on the impact, the one or more first motion characteristics of the user, and the one or more second motion characteristics of the user, and in response, generates a notification indicating that the user has fallen.
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公开(公告)号：US20240401954A1
公开(公告)日：2024-12-05
申请号：US18731060
申请日：2024-05-31
Applicant: Apple Inc.
Inventor： Xiaoyuan Tu , Alexander Singh Alvarado , Jonathan Michel Beard , Lucie A. Huet , Ozhan Turgut , Ryan K. Burns
IPC: G01C21/16
Abstract: Embodiments are disclosed for PDR for different device placements. In some embodiments, a method comprises: obtaining motion data from a motion sensor of a mobile device; determining pedestrian or non-pedestrian class based on the device motion data; determining a placement of the device based on the device motion data; estimating a first direction of travel based on multiple direction of travel sources and the device placement; estimating a first velocity based on the pedestrian or non-pedestrian classification, the first estimate of direction of travel and a first estimate of speed; estimating a second velocity based on a kinematic model and the device motion data; selecting the first estimated velocity or the second estimated velocity based on selection logic; and determining a relative position of the device based on the selected estimated velocity.
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公开(公告)号：US11589183B2
公开(公告)日：2023-02-21
申请号：US17351199
申请日：2021-06-17
Applicant: Apple Inc.
Inventor： Xiaoyuan Tu , Margaret H. Tam , Alexander Singh Alvarado , Johahn Leung , Simon Woollard
Abstract: During an initialization of a head pose tracker for a spatial audio system, a spatial audio ambience bed is rotated about a boresight vector to align the boresight vector with a center channel of the ambience bed. The boresight is computed using source device motion data and headset motion data. The ambience bed includes the center channel and one or more other channels. An ambience bed reference frame is aligned with a horizontal plane of a headset reference frame, such that the ambience bed is horizontally level with a user's ears. A first estimated gravity direction is fixed (made constant) in the ambience bed reference frame. During head pose tracking, the ambience bed reference frame is rolled about the boresight vector to align a second estimated gravity direction in the headset reference frame with the first estimated gravity direction fixed in the ambience bed reference frame.
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公开(公告)号：US11276290B2
公开(公告)日：2022-03-15
申请号：US16852370
申请日：2020-04-17
Applicant: Apple Inc.
Inventor： Xing Tan , Huayu Ding , Parisa Dehleh Hossein Zadeh , Harshavardhan Mylapilli , Hung A. Pham , Karthik Jayaraman Raghuram , Yann Jerome Julien Renard , Sheena Sharma , Alexander Singh Alvarado , Umamahesh Srinivas , Xiaoyuan Tu , Hengliang Zhang , Geoffrey Louis Chi-Johnston , Vivek Garg
IPC: G08B1/08 , G08B21/04 , A61B5/024 , A61B5/0205 , A61B5/11 , A61B5/00 , G01C5/06 , G01C21/12 , G01S19/13 , G06F3/01 , G08B13/24
Abstract: In an example method, a mobile device obtains a signal indicating an acceleration measured by a sensor over a time period. The mobile device determines an impact experienced by the user based on the signal. The mobile device also determines, based on the signal, one or more first motion characteristics of the user during a time prior to the impact, and one or more second motion characteristics of the user during a time after the impact. The mobile device determines that the user has fallen based on the impact, the one or more first motion characteristics of the user, and the one or more second motion characteristics of the user, and in response, generates a notification indicating that the user has fallen.
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Patent Agency Ranking
56.发明申请公开(公告)号：US20210400418A1
公开(公告)日：2021-12-23
申请号：US17349907
申请日：2021-06-16
Applicant: Apple Inc.
Inventor： Margaret H. Tam , Xiaoyuan Tu , Alexander Singh Alvarado , Adam S. Howell
Abstract: In an embodiment, a method comprises: estimating a first gravity direction in a source device reference frame for a source device; estimating a second gravity direction in a headset reference frame for a headset; estimating a rotation transform from the headset frame into a face reference frame using the first and second estimated gravity directions, a rotation transform from a camera reference frame to the source device reference frame, and a rotation transform from the face reference frame to the camera reference frame; estimating a relative position and attitude using source device motion data, headset motion data and the rotation transform from the headset frame to the face reference frame; using the relative position and attitude to estimate a head pose; and using the estimated head pose to render spatial audio for playback on the headset.
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公开(公告)号：US20210397250A1
公开(公告)日：2021-12-23
申请号：US17351195
申请日：2021-06-17
Applicant: Apple Inc.
Inventor： Mehmet Akgul , Alexander Singh Alvarado , Xiaoyuan Tu , Margaret H. Tam
Abstract: Embodiments are disclosed for user posture change detection for triggering re-centering of spatial audio. In an embodiment, a method comprises: obtaining source device motion data from a source device and headset motion data from a headset worn by a user; estimating a gravity vector from one of the source device or headset motion data; splitting the source device and headset motion data into vertical and horizontal planes, the vertical plane in the direction of the estimated gravity vector and the horizontal plane perpendicular to the estimated gravity vector; calculating similarity measures based on the source device motion data and headset motion data in the vertical and horizontal planes over a time window; detecting a posture change event based on the calculated similarity measures; and resetting a head tracker error after the detected user posture change event.
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公开(公告)号：US10670735B2
公开(公告)日：2020-06-02
申请号：US15700400
申请日：2017-09-11
Applicant: Apple Inc.
Inventor： Xiaoyuan Tu , Alexander Singh Alvarado , Adam Howell , Anil Kandangath
Abstract: A system and method for improving the accuracy of a user device when generating map/navigation information for display to a user, comprising: obtaining compass heading from a magnetometer of the user device located within a vehicle; adjusting the compass heading based on a mount angle of the user device within the vehicle; obtaining location data from a location sensor of the user device; determining if a course of the vehicle can be reliably determined from the location data; if the course of the vehicle cannot be reliably determined from the location data, determining the orientation of the vehicle using the compass heading but not the course; if the course of the vehicle can be reliably determined from the location data, calculating a course of the vehicle based on the location data and determining the orientation of the vehicle using the course; generating, by a processor, first map/navigation information using the orientation of the vehicle; and displaying, by a processor, the first map/navigation information to the user.
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公开(公告)号：US10182316B1
公开(公告)日：2019-01-15
申请号：US15650711
申请日：2017-07-14
Applicant: Apple Inc.
Inventor： Xiaoyuan Tu , Anil K. Kandangath
Abstract: Methods and devices for detecting a change in a motion state of a user of a mobile device are provided. The method includes determining, based on one or more sensors of the mobile device, that the motion state of the user is a driving state, the driving state indicating that the user is inside a vehicle that is moving, monitoring, with the mobile device, the one or more sensors, determining that a new motion state is a non-driving state. The method further includes identifying a location where the user exited the vehicle using one or more of the measurements from the one or more sensors before the determining that the new motion state is the non-driving state, and identifying the location where the user exited the vehicle as corresponding to a parked location of the vehicle.
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公开(公告)号：US09933833B2
公开(公告)日：2018-04-03
申请号：US14796718
申请日：2015-07-10
Applicant: Apple Inc.
Inventor： Xiaoyuan Tu , Anil K. Kandangath
CPC classification number: G06F1/3234 , G06F1/163 , G06F1/3206 , G06F1/3218 , G06F1/3265 , G06F1/3287 , G06F1/3296 , G06F3/014 , G06F3/017
Abstract: A wearable computing device can detect device-raising gestures. For example, onboard motion sensors of the device can detect movement of the device in real time and infer information about the spatial orientation of the device. Based on analysis of signals from the motion sensors, the device can detect a raise gesture, which can be a motion pattern consistent with the user moving the device's display into his line of sight. In response to detecting a raise gesture, the device can activate its display and/or other components. Detection of a raise gesture can occur in stages, and activation of different components can occur at different stages.
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