公开(公告)号：US20210400419A1

公开(公告)日：2021-12-23

申请号：US17351183

申请日：2021-06-17

Applicant: Apple Inc.

Inventor： Ozhan Turgut ,  Halil Ibrahim Basturk ,  Alexander Singh Alvarado ,  Adam S. Howell ,  Hung A. Pham

IPC: H04S7/00 ,  G06F3/01 ,  G01P15/18

Abstract: Embodiments are disclosed for head dimension estimation for spatial audio applications. In an embodiment, a method comprises: obtaining, using one or more processors of an audio headset worn on a user's head, acceleration samples and rotation rate samples over a specified time window while the user rotates their head, the acceleration samples and rotation rate samples measured using motion sensors in the headset; determining a function that relates the acceleration samples to the rotation rate samples; comparing the function to a plurality of reference functions, where each reference function corresponds to a different head dimension in a nominal range of head dimensions; and estimating a dimension of the user's head based on the comparing.

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.

公开(公告)号：US20240402279A1

公开(公告)日：2024-12-05

申请号：US18679998

申请日：2024-05-31

Applicant: Apple Inc.

Inventor： Benjamin A. Werner ,  Anup Dhital ,  Alexander Singh Alvarado ,  Brian G. Kilberg ,  Kenneth M. Pesyna, JR. ,  Tunc Ertan ,  Mohamed Youssef ,  Ranjini Narayan ,  Shreya Dilip Date ,  Jonathan M. Beard ,  Lucie A. Huet ,  Xiaoyuan Tu ,  Ryan K. Burns ,  Ozhan Turgut

IPC: G01S5/00 ,  G01S19/51

Abstract: A mobile device may determine a set of range values between the first mobile device and the second mobile device based on a difference between the first time and the second time for ranging wireless signals. The mobile device can determine first odometry information using a first sensor on the first mobile device, the first odometry information indicating a first motion of the first mobile device during a time period. The mobile device can receive, via a data channel, second odometry information determined from second measurements captured using a second sensor on the second mobile device. The mobile device can solve an angle between a first reference frame for the first device and a second reference frame for the second device using the set of range values, and the first and second odometry information to display a directional arrow pointing to a current position of the second mobile device.

公开(公告)号：US12069469B2

公开(公告)日：2024-08-20

申请号：US17351183

申请日：2021-06-17

Applicant: Apple Inc.

Inventor： Ozhan Turgut ,  Halil Ibrahim Basturk ,  Alexander Singh Alvarado ,  Adam S. Howell ,  Hung A. Pham

IPC: H04S7/00 ,  G01P15/18 ,  G06F3/01

CPC classification number: H04S7/304 ,  G01P15/18 ,  G06F3/012

Abstract: Embodiments are disclosed for head dimension estimation for spatial audio applications. In an embodiment, a method comprises: obtaining, using one or more processors of an audio headset worn on a user's head, acceleration samples and rotation rate samples over a specified time window while the user rotates their head, the acceleration samples and rotation rate samples measured using motion sensors in the headset; determining a function that relates the acceleration samples to the rotation rate samples; comparing the function to a plurality of reference functions, where each reference function corresponds to a different head dimension in a nominal range of head dimensions; and estimating a dimension of the user's head based on the comparing.