公开(公告)号：US20180209846A1

公开(公告)日：2018-07-26

申请号：US15879365

申请日：2018-01-24

Applicant: Apple Inc.

Inventor： Shingo Mandai ,  Andrew Kenneth John McMahon ,  Cristiano L. Niclass ,  Thierry Oggier ,  Tal Kaitz ,  Moshe Laifenfeld

IPC: G01J1/44 ,  G01J1/42

Abstract: The sensitivity of one or more single-photon avalanche diodes (SPAD) in a SPAD detector is modulated over time. The sensitivity of all of the SPADs may be modulated, or the sensitivity of one section of the SPADs can be modulated differently from another section of the SPADs. Various techniques for modulating the sensitivity are disclosed.

公开(公告)号：US12028611B1

公开(公告)日：2024-07-02

申请号：US17664355

申请日：2022-05-20

Applicant: Apple Inc.

Inventor： Mark N Gamadia ,  Zhongmin Wang ,  Moshe Laifenfeld ,  Yingjun Bai

IPC: H04N23/67

CPC classification number: H04N23/671 ,  H04N23/673

Abstract: Various embodiments disclosed herein include techniques for determining autofocus for a camera on a mobile device. In various instances, a depth imaging system (e.g., a time-of-flight autofocus system (ToF-AF system)) is used to determine distance of a subject in order to determine autofocus for a camera. In some instances, however, the ToF-AF system may be unable to detect a subject that is very close to the camera when the objects are below a minimum detectable distance of the ToF-AF system. In such instances, an existing IR detector outside of the ToF-AF system may be implemented to measure reflected signals from the ToF-AF system. A power ratio may be determined from the reflected signals and used to determine information about the distance of the subject from the camera.

公开(公告)号：US11868455B2

公开(公告)日：2024-01-09

申请号：US17182076

申请日：2021-02-22

Applicant: Apple Inc.

Inventor： Deepti S. Prakash ,  Lucia E. Ballard ,  Jerrold V. Hauck ,  Feng Tang ,  Etai Littwin ,  Pavan Kumar Anasosalu Vasu ,  Gideon Littwin ,  Thorsten Gernoth ,  Lucie Kucerova ,  Petr Kostka ,  Steven P. Hotelling ,  Eitan Hirsh ,  Tal Kaitz ,  Jonathan Pokrass ,  Andrei Kolin ,  Moshe Laifenfeld ,  Matthew C. Waldon ,  Thomas P. Mensch ,  Lynn R. Youngs ,  Christopher G. Zeleznik ,  Michael R. Malone ,  Ziv Hendel ,  Ivan Krstic ,  Anup K. Sharma

IPC: G06F21/32 ,  H04L9/32 ,  H04W12/06 ,  H04L9/40 ,  G06F21/83 ,  G06V40/40 ,  G06V40/16 ,  H04L9/08

CPC classification number: G06F21/32 ,  G06F21/83 ,  G06V40/166 ,  G06V40/172 ,  G06V40/40 ,  H04L9/085 ,  H04L9/0844 ,  H04L9/3228 ,  H04L9/3231 ,  H04L9/3234 ,  H04L9/3247 ,  H04L63/0861 ,  H04W12/06

Abstract: Techniques are disclosed relating to biometric authentication, e.g., facial recognition. In some embodiments, a device is configured to verify that image data from a camera unit exhibits a pseudo-random sequence of image capture modes and/or a probing pattern of illumination points (e.g., from lasers in a depth capture mode) before authenticating a user based on recognizing a face in the image data. In some embodiments, a secure circuit may control verification of the sequence and/or the probing pattern. In some embodiments, the secure circuit may verify frame numbers, signatures, and/or nonce values for captured image information. In some embodiments, a device may implement one or more lockout procedures in response to biometric authentication failures. The disclosed techniques may reduce or eliminate the effectiveness of spoofing and/or replay attacks, in some embodiments.

公开(公告)号：US20230094971A1

公开(公告)日：2023-03-30

申请号：US18061395

申请日：2022-12-02

Applicant: Apple Inc.

Inventor： Mark N. Gamadia ,  Abhishek Dhanda ,  Gregory Guyomarc'h ,  Andrew D. Fernandez ,  Moshe Laifenfeld

IPC: H04N5/232

Abstract: Various embodiments disclosed herein include techniques for determining autofocus for a camera on a mobile device. In some instances, depth imaging is used to assist in determining a focus position for the camera through an autofocus process. For example, a determination of depth may be used to determine a focus position for the camera. In another example, the determination of depth may be used to assist another autofocus process.

公开(公告)号：US11523043B2

公开(公告)日：2022-12-06

申请号：US17485258

申请日：2021-09-24

Applicant: Apple Inc.

Inventor： Mark N. Gamadia ,  Abhishek Dhanda ,  Gregory Guyomarc'h ,  Andrew D. Fernandez ,  Moshe Laifenfeld

IPC: H04N5/232

Abstract: Various embodiments disclosed herein include techniques for determining autofocus for a camera on a mobile device. In some instances, depth imaging is used to assist in determining a focus position for the camera through an autofocus process. For example, a determination of depth may be used to determine a focus position for the camera. In another example, the determination of depth may be used to assist another autofocus process.

公开(公告)号：US20220350026A1

公开(公告)日：2022-11-03

申请号：US17863412

申请日：2022-07-13

Applicant: Apple Inc.

Inventor： Moshe Laifenfeld ,  Harish Venkataraman ,  Cristiano L Niclass ,  Doron Shinbox ,  Shingo Mandai ,  Susan A. Thompson

IPC: G01S17/894 ,  G01S17/10 ,  G01S7/481 ,  G01S7/4865 ,  G01S7/4863 ,  G01S7/484

Abstract: Sensing apparatus includes a radiation source, which emits pulses of optical radiation toward multiple points in a target scene. A receiver receives the optical radiation that is reflected from the target scene and outputs signals that are indicative of respective times of flight of the pulses to and from the points in the target scene. Processing and control circuitry selects a first pulse repetition interval (PRI), a second PRI, greater than the first PRI, and a third PRI, greater than the second PRI, from a permitted range of PRIs, drives the radiation source to emit sequences of the pulses at the first PRI, the second PRI, and the third PRI, and processes the signals output by the receiver in response to the first, second, and third sequences of the pulses in order to compute respective depth coordinates of the points in the target scene.

公开(公告)号：US20210270969A1

公开(公告)日：2021-09-02

申请号：US17268961

申请日：2019-09-02

Applicant: APPLE INC.

Inventor： David Silver ,  Eitan Hirsh ,  Moshe Laifenfeld ,  Tal Kaitz

IPC: G01S17/89 ,  G01S17/58 ,  G01S17/86 ,  G01S17/10 ,  G01S7/4863

Abstract: Imaging apparatus (22) includes a radiation source (40), which emits pulsed beams (42) of optical radiation toward a target scene (24). An array (52) of sensing elements outputs signals indicative of respective times of incidence of photons on the sensing elements. Objective optics (54) form a first image of the target scene on the array of sensing elements. An image sensor (64) captures e a second image of the target scene. Processing and control circuitry (56, 58) is configured to process the second image so as to detect a relative motion between at least one object in the target scene and the apparatus, and which is configured to construct, responsively to the signals from the array, histograms of the times of incidence of the photons on the sensing elements and to adjust the histograms responsively to the detected relative motion, and to generate a depth map of the target scene based on the adjusted histograms.

公开(公告)号：US10929515B2

公开(公告)日：2021-02-23

申请号：US16049933

申请日：2018-07-31

Applicant: Apple Inc.

Inventor： Deepti S. Prakash ,  Lucia E. Ballard ,  Jerrold V. Hauck ,  Feng Tang ,  Etai Littwin ,  Pavan Kumar Ansosalu Vasu ,  Gideon Littwin ,  Thorsten Gernoth ,  Lucie Kucerova ,  Petr Kostka ,  Steven P. Hotelling ,  Eitan Hirsh ,  Tal Kaitz ,  Jonathan Pokrass ,  Andrei Kolin ,  Moshe Laifenfeld ,  Matthew C. Waldon ,  Thomas P. Mensch ,  Lynn R. Youngs ,  Christopher G. Zeleznik ,  Michael R. Malone ,  Ziv Hendel ,  Ivan Krstic ,  Anup K. Sharma

IPC: G06F21/00 ,  G06F21/32 ,  G06K9/00 ,  H04L9/32 ,  H04W12/06 ,  H04L29/06 ,  G06F21/83 ,  H04L9/08

Abstract: Techniques are disclosed relating to biometric authentication, e.g., facial recognition. In some embodiments, a device is configured to verify that image data from a camera unit exhibits a pseudo-random sequence of image capture modes and/or a probing pattern of illumination points (e.g., from lasers in a depth capture mode) before authenticating a user based on recognizing a face in the image data. In some embodiments, a secure circuit may control verification of the sequence and/or the probing pattern. In some embodiments, the secure circuit may verify frame numbers, signatures, and/or nonce values for captured image information. In some embodiments, a device may implement one or more lockout procedures in response to biometric authentication failures. The disclosed techniques may reduce or eliminate the effectiveness of spoofing and/or replay attacks, in some embodiments.

公开(公告)号：US20190044723A1

公开(公告)日：2019-02-07

申请号：US16049933

申请日：2018-07-31

Applicant: Apple Inc.

Inventor： Deepti S. Prakash ,  Lucia E. Ballard ,  Jerrold V. Hauck ,  Feng Tang ,  Etai Littwin ,  Pavan Kumar Ansosalu Vasu ,  Gideon Littwin ,  Thorsten Gernoth ,  Lucie Kucerova ,  Petr Kostka ,  Steven P. Hotelling ,  Eitan Hirsh ,  Tal Kaitz ,  Jonathan Pokrass ,  Andrei Kolin ,  Moshe Laifenfeld ,  Matthew C. Waldon ,  Thomas P. Mensch ,  Lynn R. Youngs ,  Christopher G. Zeleznik ,  Michael R. Malone ,  Ziv Hendel ,  Ivan Krstic ,  Anup K. Sharma

IPC: H04L9/32 ,  G06F21/32 ,  H04L9/08 ,  G06K9/00

Abstract: Techniques are disclosed relating to biometric authentication, e.g., facial recognition. In some embodiments, a device is configured to verify that image data from a camera unit exhibits a pseudo-random sequence of image capture modes and/or a probing pattern of illumination points (e.g., from lasers in a depth capture mode) before authenticating a user based on recognizing a face in the image data. In some embodiments, a secure circuit may control verification of the sequence and/or the probing pattern. In some embodiments, the secure circuit may verify frame numbers, signatures, and/or nonce values for captured image information. In some embodiments, a device may implement one or more lockout procedures in response to biometric authentication failures. The disclosed techniques may reduce or eliminate the effectiveness of spoofing and/or replay attacks, in some embodiments.

公开(公告)号：US20180081061A1

公开(公告)日：2018-03-22

申请号：US15673428

申请日：2017-08-10

Applicant: Apple Inc.

Inventor： Shingo Mandai ,  Cristiano L. Niclass ,  Richard E. Bills ,  Moshe Laifenfeld ,  Mina A. Rezk ,  Alexander Shpunt ,  Ron Sokolovsky ,  Tal Kaitz ,  Ronen Akerman ,  Jason D. Mudge ,  Andrew J. Sutton

IPC: G01S17/89 ,  G01S7/481 ,  G01B11/02 ,  G02F1/29

CPC classification number: G01S17/89 ,  G01B11/026 ,  G01S7/4814 ,  G01S7/4817 ,  G01S7/484 ,  G01S7/4863 ,  G01S7/4865 ,  G01S7/4868 ,  G01S17/10 ,  G02F1/292

Abstract: An electro-optical device includes a laser, which is configured to emit toward a scene pulses of optical radiation. An array of detectors are configured to receive the optical radiation that is reflected from points in the scene and to output signals indicative of respective times of arrival of the received radiation. A controller is coupled to drive the laser to emit a sequence of pulses of the optical radiation toward each of a plurality of points in the scene and to find respective times of flight for the points responsively to the output signals, while controlling a power of the pulses emitted by the laser by counting a number of the detectors outputting the signals in response to each pulse, and reducing the power of a subsequent pulse in the sequence when the number is greater than a predefined threshold.