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    EARLY-LATE PULSE COUNTING FOR LIGHT EMITTING DEPTH SENSORS
    23.
    发明申请
    EARLY-LATE PULSE COUNTING FOR LIGHT EMITTING DEPTH SENSORS 审中-公开

    公开(公告)号：US20190018119A1

    公开(公告)日：2019-01-17

    申请号：US16034250

    申请日：2018-07-12

    Applicant: Apple Inc.

    Inventor： Moshe Laifenfeld ,  Cristiano L. Niclass ,  Shingo Mandai ,  Tal Kaitz

    IPC: G01S7/486 ,  G01S17/10 ,  G01S7/481

    Abstract: Disclosed herein are methods and devices for light emitting depth sensors such as scanning depth sensors and LIDARS. Methods, devices and systems disclose tracking a beam of reflected light pulses on an array of light sensing pixels. The tracking can dynamically update a location of the beam or an expected on-center time of the reflected light pulses at a pixel of the array. Counts of detected reflected pulses in time periods before and after the expected on-center time at a pixel are used to detect offsets in initial estimates of the beam location or timing.

    Integrated transceiver array
    25.
    发明申请
    Integrated transceiver array 有权

    公开(公告)号：US20250054930A1

    公开(公告)日：2025-02-13

    申请号：US18778986

    申请日：2024-07-21

    Applicant: Apple Inc.

    Inventor： Shingo Mandai ,  Cristiano L. Niclass ,  Pengfei Sun ,  Vyshakh Sanjeev

    IPC: H01L25/16 ,  G01S17/34 ,  G02B6/12 ,  G02B6/42 ,  G02B6/43 ,  H01L23/00 ,  H01L27/144 ,  H01L31/02 ,  H01L31/0232 ,  H01L31/107 ,  H01S5/026 ,  H01S5/183

    Abstract: An optoelectronic device includes a first semiconductor die, having first and second surfaces and including a first array of transceiver elements. Each transceiver element includes an optical transducer, which directs outgoing coherent optical radiation through the first surface toward a target and to receive incoming optical radiation that has been reflected from the target. A single-photon optical detector outputs electrical pulses in response to photons of the incoming optical radiation. A waveguide conveys the incoming optical radiation from the optical transducer to the single-photon optical detector. A second semiconductor die is bonded to the second surface of the first semiconductor die and includes a second array of logic circuits, which are coupled to receive and process the electrical pulses output by the single-photon optical detectors in corresponding ones of the transceiver elements.

    SPAD-based photon detectors with multi-phase sampling TDCs
    26.
    发明授权
    SPAD-based photon detectors with multi-phase sampling TDCs 有权

    公开(公告)号：US12199197B2

    公开(公告)日：2025-01-14

    申请号：US17944738

    申请日：2022-09-14

    Applicant: Apple Inc.

    Inventor： Shingo Mandai ,  Cristiano L. Niclass ,  Moshe Laifenfeld ,  Or Nahir ,  Vyshakh Sanjeev

    IPC: H01L31/02 ,  H01L27/146 ,  H01L31/107 ,  H04N25/705 ,  H04N25/75 ,  H04N25/772

    Abstract: A method of building a moving average histogram of photon times of arrival includes, for each time interval in first and second subsets of time intervals, latching a time reference corresponding to a time of receipt of an avalanche timing output signal of a single-photon avalanche diode (SPAD), and advancing a count stored at a memory address corresponding to the latched time reference. The memory address corresponds to a range of time references. The method further includes reading and clearing a first set of counts after the first subset of time intervals; phase-shifting the sequence of time references with respect to a set of memory addresses after the first subset of time intervals; reading and clearing a second set of counts after the second subset of time intervals; and building the moving average histogram using at least the first and second sets of counts.

    Reconfigurable Time of Flight Proximity Sensor with Near-Field and Far-Field Measurement Capabilities
    27.
    发明公开
    Reconfigurable Time of Flight Proximity Sensor with Near-Field and Far-Field Measurement Capabilities 审中-公开

    公开(公告)号：US20230258785A1

    公开(公告)日：2023-08-17

    申请号：US18163063

    申请日：2023-02-01

    Applicant: Apple Inc.

    Inventor： Shingo Mandai ,  Dong Zheng ,  Tong Chen ,  Cristiano L Niclass

    IPC: G01S7/487 ,  G01S7/4863 ,  G01S17/88

    CPC classification number: G01S7/4876 ,  G01S7/4863 ,  G01S7/4873 ,  G01S17/88

    Abstract: An electronic device may include a proximity sensor under a cover layer. The proximity sensor may include a light-emitter, such as an infrared light source, and a light-detector, such as an array of single-photon avalanche diodes (SPADs). The SPADs may measure light that has reflected from an external object. However, some of the light may be reflected by the cover layer, creating cross-talk. To distinguish between the cross-talk and signals from the external object, processing circuitry may histogram measurements from the SPADs. In particular, the processing circuitry may histogram near-field and/or far-field measurements into different histograms. The measurements may be weighted and/or gated prior to histogramming. In this way, cross-talk may be distinguished from the near-field and far-field signals.

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