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公开(公告)号：US20200081120A1
公开(公告)日：2020-03-12
申请号：US16563068
申请日：2019-09-06
Applicant: Apple Inc.
Inventor： Nicholas C. Soldner , Arthur Y. Zhang , Tushar Gupta
Abstract: Object detection may include transmitting, by a first device, a first pulse into an environment using a wide field configuration of an ultrasonic sensor array, detecting a presence of an object in the environment based on a detected echo based on the first pulse. In response to detecting the presence of the object, a targeted configuration of the ultrasonic sensor array is determined, and a second pulse is transmitted into the environment based on the second pulse, wherein a characteristic of the object is determined based on a detected echo from the second pulse.
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公开(公告)号：US20250076672A1
公开(公告)日：2025-03-06
申请号：US18952845
申请日：2024-11-19
Applicant: Apple Inc.
Inventor： Tushar Gupta , Aleksandr M. Movshovich , Arthur Y. Zhang , Ray L. Chang , Fletcher R. Rothkopf
Abstract: Fiducial patterns that produce 2D Barker code-like diffraction patterns at a camera sensor are etched or otherwise provided on a cover glass in front of a camera. 2D Barker code kernels, when cross-correlated with the diffraction patterns captured in images by the camera, provide sharp cross-correlation peaks. Misalignment of the cover glass with respect to the camera can be derived by detecting shifts in the location of the detected peaks with respect to calibrated locations. Devices that include multiple cameras behind a cover glass with one or more fiducials on the cover glass in front of each camera are also described. The diffraction patterns caused by the fiducials at the various cameras may be analyzed to detect movement or distortion of the cover glass in multiple degrees of freedom.
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公开(公告)号：US20230314828A1
公开(公告)日：2023-10-05
申请号：US18331045
申请日：2023-06-07
Applicant: Apple Inc.
Inventor： Tushar Gupta , Aleksandr M. Movshovich , Arthur Y. Zhang , Ray L. Chang , Fletcher R. Rothkopf
CPC classification number: G02B27/36 , G02B27/4227 , G02B27/0172 , G02B7/14 , H04N23/55 , H04N23/663 , G02B2027/0138
Abstract: Fiducial patterns that produce 2D Barker code-like diffraction patterns at a camera sensor are etched or otherwise provided on a cover glass in front of a camera. 2D Barker code kernels, when cross-correlated with the diffraction patterns captured in images by the camera, provide sharp cross-correlation peaks. Misalignment of the cover glass with respect to the camera can be derived by detecting shifts in the location of the detected peaks with respect to calibrated locations. Devices that include multiple cameras behind a cover glass with one or more fiducials on the cover glass in front of each camera are also described. The diffraction patterns caused by the fiducials at the various cameras may be analyzed to detect movement or distortion of the cover glass in multiple degrees of freedom.
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Patent Agency Ranking
公开(公告)号：US11709372B2
公开(公告)日：2023-07-25
申请号：US17021943
申请日：2020-09-15
Applicant: Apple Inc.
Inventor： Tushar Gupta , Aleksandr M. Movshovich , Arthur Y. Zhang , Ray L. Chang , Fletcher R. Rothkopf
CPC classification number: G02B27/36 , G02B7/14 , G02B27/0172 , G02B27/4227 , H04N23/55 , H04N23/663 , G02B2027/0138
Abstract: Fiducial patterns that produce 2D Barker code-like diffraction patterns at a camera sensor are etched or otherwise provided on a cover glass in front of a camera. 2D Barker code kernels, when cross-correlated with the diffraction patterns captured in images by the camera, provide sharp cross-correlation peaks. Misalignment of the cover glass with respect to the camera can be derived by detecting shifts in the location of the detected peaks with respect to calibrated locations. Devices that include multiple cameras behind a cover glass with one or more fiducials on the cover glass in front of each camera are also described. The diffraction patterns caused by the fiducials at the various cameras may be analyzed to detect movement or distortion of the cover glass in multiple degrees of freedom.
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公开(公告)号：US12174396B2
公开(公告)日：2024-12-24
申请号：US18331045
申请日：2023-06-07
Applicant: Apple Inc.
Inventor： Tushar Gupta , Aleksandr M. Movshovich , Arthur Y. Zhang , Ray L. Chang , Fletcher R. Rothkopf
Abstract: Fiducial patterns that produce 2D Barker code-like diffraction patterns at a camera sensor are etched or otherwise provided on a cover glass in front of a camera. 2D Barker code kernels, when cross-correlated with the diffraction patterns captured in images by the camera, provide sharp cross-correlation peaks. Misalignment of the cover glass with respect to the camera can be derived by detecting shifts in the location of the detected peaks with respect to calibrated locations. Devices that include multiple cameras behind a cover glass with one or more fiducials on the cover glass in front of each camera are also described. The diffraction patterns caused by the fiducials at the various cameras may be analyzed to detect movement or distortion of the cover glass in multiple degrees of freedom.
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公开(公告)号：US20240394921A1
公开(公告)日：2024-11-28
申请号：US18691427
申请日：2022-09-22
Applicant: Apple Inc.
Inventor： Tushar Gupta , Arthur Y Zhang , Aleksandr M Movshovich , Ray L Chang , Fletcher R Rothkopf
Abstract: Fiducial patterns that include sub-patterns of dot-like markers are generated or applied on or in transparent glass or plastic material, for example an optical element such as a cover glass or lens attachment. A camera may capture multiple images through the glass or plastic element that include diffraction patterns caused by the fiducial patterns. The diffraction patterns from multiple images may be processed and analyzed to extract information including but not limited to centroids of the sub-patterns of the fiducial patterns. This information may, for example, be used to estimate location of the fiducial 10 patterns with respect to the camera, and thus to estimate pose of the glass or lens element with respect to the camera. Information such as serial numbers and prescriptions can also be encoded in the fiducial patterns and extracted from the respective diffraction patterns.
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公开(公告)号：US20210302572A1
公开(公告)日：2021-09-30
申请号：US17316125
申请日：2021-05-10
Applicant: Apple Inc.
Inventor： Nicholas C. Soldner , Arthur Y. Zhang , Tushar Gupta
Abstract: Object detection may include transmitting, by a first device, a first pulse into an environment using a wide field configuration of an ultrasonic sensor array, detecting a presence of an object in the environment based on a detected echo based on the first pulse. In response to detecting the presence of the object, a targeted configuration of the ultrasonic sensor array is determined, and a second pulse is transmitted into the environment based on the second pulse, wherein a characteristic of the object is determined based on a detected echo from the second pulse.
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公开(公告)号：US20210096385A1
公开(公告)日：2021-04-01
申请号：US17021943
申请日：2020-09-15
Applicant: Apple Inc.
Inventor： Tushar Gupta , Aleksandr M. Movshovich , Arthur Y. Zhang , Ray L. Chang , Fletcher R. Rothkopf
Abstract: Fiducial patterns that produce 2D Barker code-like diffraction patterns at a camera sensor are etched or otherwise provided on a cover glass in front of a camera. 2D Barker code kernels, when cross-correlated with the diffraction patterns captured in images by the camera, provide sharp cross-correlation peaks. Misalignment of the cover glass with respect to the camera can be derived by detecting shifts in the location of the detected peaks with respect to calibrated locations. Devices that include multiple cameras behind a cover glass with one or more fiducials on the cover glass in front of each camera are also described. The diffraction patterns caused by the fiducials at the various cameras may be analyzed to detect movement or distortion of the cover glass in multiple degrees of freedom.
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