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    Methods and devices for peak signal detection
    11.
    发明授权
    Methods and devices for peak signal detection 有权

    公开(公告)号：US11971505B2

    公开(公告)日：2024-04-30

    申请号：US17107313

    申请日：2020-11-30

    Applicant: STMicroelectronics (Grenoble 2) SAS

    Inventor： Pascal Mellot

    IPC: G01S7/4865 ,  G01S7/487 ,  G01S17/10

    CPC classification number: G01S7/4865 ,  G01S7/487 ,  G01S17/10

    Abstract: A method includes counting a first set of photons having times of flight that falls within a first time range and being detected during a first time period, determining a second time range based on the first set of photons, the second time range being smaller than the first time range, counting a second set of photons having times of flight that fall within the second time range and being detected during a second time period, and determining a third time range based on the second set of photons, the third time range being smaller than the second time range.

    Ambient luminosity level detection
    12.
    发明授权
    Ambient luminosity level detection 有权

    公开(公告)号：US11029200B2

    公开(公告)日：2021-06-08

    申请号：US15890533

    申请日：2018-02-07

    Applicant: STMicroelectronics (Grenoble 2) SAS

    Inventor： Pascal Mellot

    IPC: G01J1/42 ,  G01J1/18 ,  G01J1/44 ,  H04N1/00

    Abstract: The following steps are performed in connection with a photodiode circuit: a) resetting the photodiode circuit; b) determining when a photodiode voltage changes in response to illumination to reach a threshold; and c) updating a counter in response to the determination in step b). The steps a) to c) are repeated until an end of a measurement period is reached. The value of the counter at the end of the measurement period is then output to indicate an intensity of the illumination.

    DEPTH MAP SENSOR WITH BIN ROTATION
    13.
    发明申请
    DEPTH MAP SENSOR WITH BIN ROTATION 有权

    公开(公告)号：US20210133992A1

    公开(公告)日：2021-05-06

    申请号：US17074238

    申请日：2020-10-19

    Applicant: STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED ,  STMicroelectronics (Grenoble 2) SAS

    Inventor： Ivelina Hristova ,  Pascal Mellot ,  Neale Dutton

    IPC: G06T7/50 ,  G06F1/10 ,  G06T15/08 ,  G06T15/00

    Abstract: A depth map sensor includes a first array of first pixels, each first pixel having a first photodetector associated with a pixel circuit that comprises a plurality of first bins for accumulating events. A clock source is configured to generate a plurality of phase-shifted clock signals. A first circuit has a plurality of first output lines coupled to the first array of first pixels. The first circuit is configured to receive the plurality of phase-shifted clock signals. The first circuit includes a first block and a second block. The first block is configured to propagate the plurality of phase-shifted clock signals to the second block during a first period determined by a first enable signal and the second block configured to select to which of the plurality of first output lines each of the plurality of phase-shifted clock signals is applied.

    DEPTH MAP SENSOR BASED ON DTOF AND ITOF
    14.
    发明申请
    DEPTH MAP SENSOR BASED ON DTOF AND ITOF 有权

    公开(公告)号：US20210063240A1

    公开(公告)日：2021-03-04

    申请号：US17006436

    申请日：2020-08-28

    Applicant: STMicroelectronics (Grenoble 2) SAS

    Inventor： Pascal Mellot ,  Laurent Plaza ,  Jeannie Chinal

    IPC: G01J1/44 ,  G06T7/50 ,  G06K9/62

    Abstract: The present disclosure relates to a depth map sensor including a light source for transmitting light pulses into an image scene; an array of pixel circuits, where each pixel circuit has a photodetector and three asynchronous counters; and a control circuit to control each of a plurality of groups of the pixel circuits of the array to generate a histogram of detection events by accumulating events during eight distinct time intervals between consecutive light pulses transmitted by the light source, such that the histogram comprises eight or more histogram bins.

    Method for measuring a time of flight
    15.
    发明授权
    Method for measuring a time of flight 有权

    公开(公告)号：US10551486B2

    公开(公告)日：2020-02-04

    申请号：US15815362

    申请日：2017-11-16

    Applicant: STMicroelectronics (Grenoble 2) SAS

    Inventor： Pascal Mellot

    IPC: G01S7/486 ,  G01S7/484 ,  G01S13/22 ,  G01S17/10

    Abstract: A method of measuring the phase of a response signal relative to a periodic excitation signal, comprises the steps of producing for each cycle of the response signal two transitions synchronized to a clock and framing a reference point of the cycle; swapping the two transitions to confront them in turns to the cycles of the response signal; measuring the offsets of the confronted transitions relative to the respective reference points of the cycles; performing a delta-sigma modulation of the swapping rate of the two transitions based on the successive offsets; and producing a phase measurement based on the duty cycle of the swapping rate.

    Multiple-sensor image acquisition system
    19.
    发明授权
    Multiple-sensor image acquisition system 有权
    多传感器图像采集系统

    公开(公告)号：US08976294B2

    公开(公告)日：2015-03-10

    申请号：US14268010

    申请日：2014-05-02

    Applicant: STMicroelectronics (Grenoble 2) SAS

    Inventor： Pascal Mellot

    IPC: H04N5/04 ,  H04N5/12

    CPC classification number: H04N5/12 ,  H04N5/232

    Abstract: Each of a first and second image acquisition device includes: a circuit for providing a primary clock signal and a frequency synthesizing circuit capable of generating at least one secondary clock signal from said primary clock signal. The frequency synthesizing circuit in each image acquisition device has a fractional phase-locked loop configuration. A synchronization comparison circuit in each image acquisition device functions to compare sync between an external sync signal and an internal sync signal. An adjustment of the fraction phase lock loop operation is made in response to the sync comparison.

    Abstract translation: 第一和第二图像采集装置中的每一个包括：用于提供主时钟信号的电路和能够从所述主时钟信号产生至少一个辅助时钟信号的频率合成电路。 每个图像采集装置中的频率合成电路具有分数锁相环配置。 每个图像采集装置中的同步比较电路用于比较外部同步信号和内部同步信号之间的同步。 响应于同步比较进行分数锁相环操作的调整。

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