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公开(公告)号：US20250085411A1
公开(公告)日：2025-03-13
申请号：US18796144
申请日：2024-08-06
Applicant: APPLE INC.
Inventor： Gabrielle A. Belzberg , Alexander J. Wiens , Halil I. Basturk , Stephen Jackson
IPC: G01S13/76
Abstract: In some implementations, the techniques may include at a first time: performing, using a first sensor, a first ranging measurement with a second device to obtain a first distance; and performing, using a second sensor, a first altitude measurement to obtain a first altitude. In addition, the techniques may include at a second time: performing, using the first sensor, a second ranging measurement with the second device to obtain a second distance; and performing, using the second sensor, a second altitude measurement to obtain a second altitude. The techniques may include determining a ranging difference between the first distance and the second distance. Moreover, the techniques may include determining an altitude difference between the first altitude and the second altitude. Also, the techniques may include determining whether the second device is on a different floor of a building than the first device.
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公开(公告)号：US20250089016A1
公开(公告)日：2025-03-13
申请号：US18806172
申请日：2024-08-15
Applicant: Apple Inc.
Inventor： Gabrielle A. Belzberg , Alexander J. Wiens , Halil Ibrahim Basturk , Benjamin A. Werner , Adam S. Howell , Hui Lin , Jun Kyu Lee , Jack D. Reilly , Behrooz Shahsavari , Hojjat Seyed Mousavi
IPC: H04W64/00
Abstract: In some implementations, techniques may include at a plurality of times while a user of the first portable device is moving with the first portable device: performing ranging at a respective position with a second device to determine a respective distance, thereby determining a plurality of respective distances, where the second device is stationary; obtaining raw measurements from a motion sensor of the first portable device. In addition, the device may include using the raw measurements at the plurality of times to determine relative positions at the plurality of times, the relative position from an initial position. The techniques may include estimating a second position of the second device that optimizes a loss function that includes differences of the respective distances at the relative positions and the actual distance between the relative positions and the second position.
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公开(公告)号：US11313935B2
公开(公告)日：2022-04-26
申请号：US16793994
申请日：2020-02-18
Applicant: Apple Inc.
Inventor： Gunes Dervisoglu , Christopher D. Guichet , Adam S. Howell , Alexander J. Wiens , Christopher E. Balcells , Erik L. Wang , Jonathan M. Beard , Tang Y. Tan , Theodore Lao , Tyler S. Bushnell , Hung A. Pham
Abstract: A method for calibrating a magnetometer of an electronic device can include detecting a change in a magnetism of the electronic device, collecting a first magnetic field data from the magnetometer at sampling frequency of at least 1 hertz, generating an elliptical calibration model based at least partially on the collected first magnetic field data, collecting a second magnetic field data from the magnetometer, and fitting the collected second magnetic field data to a sphere using the elliptical calibration model.
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公开(公告)号：US20210072335A1
公开(公告)日：2021-03-11
申请号：US16793994
申请日：2020-02-18
Applicant: Apple Inc.
Inventor： Gunes Dervisoglu , Christopher D. Guichet , Adam S. Howell , Alexander J. Wiens , Christopher E. Balcells , Erik L. Wang , Jonathan M. Beard , Tang Y. Tan , Theodore Lao , Tyler S. Bushnell , Hung A. Pham
Abstract: A method for calibrating a magnetometer of an electronic device can include detecting a change in a magnetism of the electronic device, collecting a first magnetic field data from the magnetometer at sampling frequency of at least 1 hertz, generating an elliptical calibration model based at least partially on the collected first magnetic field data, collecting a second magnetic field data from the magnetometer, and fitting the collected second magnetic field data to a sphere using the elliptical calibration model.
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