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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US2020191924A1
LIGHT DETECTION AND RANGING (LIDAR) WITH PULSE EQUALIZER
Publication/Patent Number: US2020191924A1 Publication Date: 2020-06-18 Application Number: 16/221,424 Filing Date: 2018-12-14 Inventor: Lu, Yue   Zhu, Zhenghan   Chu, Tao   Wu, John   Assignee: DiDi Research America, LLC   IPC: G01S7/486 Abstract: Embodiments of the disclosure provide receivers for a light detection and ranging (LiDAR) scanner. The receiver includes a photodetector configured to receive a laser beam, and convert the received laser beam to an electrical signal including a plurality of pulses. The receiver also includes an amplifier configured to amplify the electrical signal. The receiver further includes a pulse equalizer configured to sharpen the plurality of pulses in the amplified electrical signal. Each pulse is sharpened to have a narrower width and an increased amplitude.
2 US2020088853A1
DISTANCE MEASURING DEVICE AND DISTANCE MEASURING METHOD
Publication/Patent Number: US2020088853A1 Publication Date: 2020-03-19 Application Number: 16/297,783 Filing Date: 2019-03-11 Inventor: Kubota, Hiroshi   Matsumoto, Nobu   Assignee: KABUSHIKI KAISHA TOSHIBA   TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION   IPC: G01S7/486 Abstract: A distance measuring device according to an embodiment includes a time acquisition circuit and a distance measurement circuit. The time acquisition circuit acquires a rising time in which a measurement signal obtained by converting reflected light of a laser beam from an object into a signal reaches a first threshold and a falling time in which the measurement signal reaches a second threshold after reaching the first threshold. The distance measurement circuit measures the distance to a target object on the basis of a time difference between timing based on the rising time and the falling time and irradiation timing of the laser beam.
3 WO2020032996A2
LIDAR BASED DISTANCE MEASUREMENTS WITH TIERED POWER CONTROL
Publication/Patent Number: WO2020032996A2 Publication Date: 2020-02-13 Application Number: 2019013094 Filing Date: 2019-01-10 Inventor: Gunnam, Kiran K.   Assignee: VELODYNE LIDAR, INC.   IPC: G01S7/486 Abstract: Methods and systems for controlling illumination power of a LIDAR based, three dimensional imaging system based on discrete illumination power tiers are described herein. In one aspect, the illumination intensity of a pulsed beam of illumination light emitted from a LIDAR system is varied in accordance with a set of illumination power tiers based on the difference between a desired and a measured return pulse. In a further aspect, the illumination power tier is selected based on whether an intensity difference exceeds one of a sequence of predetermined, tiered threshold values. In this manner, the intensity of measured return pulses is maintained within a linear range of the analog to digital converter for objects detected over a wide range of distances from the LIDAR system and a wide range of environmental conditions in the optical path between the LIDAR system and the detected object.
4 EP3361282B1
OPTICAL SENSOR WITH LIMITER CIRCUIT
Publication/Patent Number: EP3361282B1 Publication Date: 2020-03-18 Application Number: 17155771.3 Filing Date: 2017-02-13 Inventor: Kappeler, Franz   Auer, Robert   Assignee: Leuze electronic GmbH + Co. KG   IPC: G01S7/486
5 US2020088851A1
Multi-Channel LIDAR Illumination Driver
Publication/Patent Number: US2020088851A1 Publication Date: 2020-03-19 Application Number: 16/134,068 Filing Date: 2018-09-18 Inventor: Hall, David S.   Liou, Raymond   Milgrome, Oren   Venkatesan, Pravin Kumar   Assignee: Velodyne Lidar, Inc.   IPC: G01S7/486 Abstract: LIDAR measurement systems employing a multiple channel, GaN based illumination driver integrated circuit (IC) are described herein. In one aspect, the multiple channel, GaN based illumination driver IC selectively couples each illumination source associated with each measurement channel to a source of electrical power to generate a measurement pulse of illumination light. In one aspect, each pulse trigger signal associated with each measurement channel is received on a separate node of the IC. In another aspect, additional control signals are received on separate nodes of the IC and communicated to all of the measurement channels. In another aspect, the multiple channel, GaN based illumination driver IC includes a power regulation module that supplies regulated voltage to various elements of each measurement channel only when any pulse trigger signal is in a state that triggers the firing of an illumination pulse.
6 EP3594715A1
LIGHT DETECTION AND RANGING SENSOR UNIT
Publication/Patent Number: EP3594715A1 Publication Date: 2020-01-15 Application Number: 18182862.5 Filing Date: 2018-07-11 Inventor: Wagner, Horst   Bojarski, Bernard J.   Assignee: Conti Temic microelectronic GmbH   Continental Automotive GmbH   IPC: G01S7/486 Abstract: A light detection and ranging (Lidar) sensor unit, comprising a light signal source, a two dimensional array of a number of N light sensitive detectors converting impinging light into an electronic signal, a readout integrated circuit and a processing unit, wherein the readout integrated circuit comprises a number of N memory units, each memory unit has an input connected to an output of one of said light sensitive detectors for receiving the electronic signal of the light sensitive detector, each memory unit comprises at least one array with I columns and J rows of analog memory cells, one column select line per column and one row select line per row for sampling the electronic signal received, each analog memory cell comprises an AND-gate a first input of the AND-gate being connected to the corresponding column select line and a second input of the AND-gate being connected to the corresponding row select line to select the analog memory cell for write and read.
7 CN110736975A
接收模组以及包括其的激光雷达
Under Examination
Title (English): The receiving module and its lida
Publication/Patent Number: CN110736975A Publication Date: 2020-01-31 Application Number: 201911079332.2 Filing Date: 2019-11-07 Inventor: 闫凯民   向少卿   Assignee: 上海禾赛光电科技有限公司   IPC: G01S7/486 Abstract: 本发明涉及一种可用于激光雷达的接收模组,包括:PCB基板,所述PCB基板具有第一侧和第二侧;光电传感器阵列,包括多个光电传感器,所述光电传感器阵列设置在所述PCB基板的第一侧;和读出芯片,所述读出芯片设置在所述PCB基板的第二侧,并耦接到所述光电传感器阵列,配置成可接收并读取所述光电传感器阵列中的光电传感器的输出。
8 US2020150249A1
LIDAR SENSOR WITH ATTENUATING ELEMENT
Publication/Patent Number: US2020150249A1 Publication Date: 2020-05-14 Application Number: 16/185,760 Filing Date: 2018-11-09 Inventor: Leppin, Heiko   Terefe, Nehemia   Assignee: Continental Automotive Systems, Inc.   IPC: G01S7/486 Abstract: A lidar sensor assembly includes a light source to generate light. An optic is in optical communication with the light source to generate a field of illumination of the light. A focal plane array is configured to receive light reflected off one or more objects. The lidar sensor assembly also includes an attenuating element configured to selectively attenuate at least a portion of the light.
9 US2020057150A1
APPARATUS AND METHOD FOR TDC SHARING IN RUN TIME-BASED DISTANCE MEASUREMENTS
Publication/Patent Number: US2020057150A1 Publication Date: 2020-02-20 Application Number: 16/540,731 Filing Date: 2019-08-14 Inventor: Beer, Maik   Schrey, Olaf   Nitta, Christian   Assignee: Fraunhofer- Gesellschaft Zur Foerderung der angewandten Forschung e.V.   IPC: G01S7/486 Abstract: An apparatus for distance measurement, having one or several optical detector modules and a readout module is provided. The optical detector modules each have a plurality of optical detector elements having one or several optical detectors and a counter indicating a count value, the optical detector elements each being in an active state or an inactive state. Each optical detector module has a timer element configured to determine a current time value and configured to continuously update the current time value, and a memory element for storing a plurality of time values stored. The readout module is configured to determine and output, for each detector module of the one or several optical detector modules, at least for each optical detector element of the optical detector elements of this optical detector module, which is in an inactive state, a time value for this optical detector element in dependence on the count value of the counter of this optical detector element and on the plurality of time values stored.
10 EP3599485A1
METHOD AND DEVICE FOR OPTICALLY MEASURING DISTANCES
Publication/Patent Number: EP3599485A1 Publication Date: 2020-01-29 Application Number: 18184937.3 Filing Date: 2018-07-23 Inventor: Birnbacher, Wolfgang   RÜhaak, Jan   Assignee: Ibeo Automotive Systems GmbH   IPC: G01S17/10 Abstract: Es wird ein Verfahren (100) zur optischen Distanzmessung vorgeschlagen, das das Aussenden (101) einer Vielzahl von Messpulsen (13), die Reflektion (103) von ausgesandten Messpulsen an mindestens einem Objekt (20) in einem Messbereich (17) mit einer Länge (17a) und das Empfangen (104) von reflektierten Messpulsen (13) umfasst. Es werden N Untergruppen von Messpulsen (13) ausgesandt (102), wobei jede Untergruppe einen konstanten Pulsabstand aufweist. Der konstante Pulsabstand verschiedener Untergruppen unterscheidet sich, wobei das kleinste gemeinsame Vielfache der konstanten Pulsabstände der N Untergruppen mindestens der zweifachen Länge (17a) des Messbereichs (17) entspricht.
11 EP3586160A1
LIDAR SCANNING SYSTEM
Publication/Patent Number: EP3586160A1 Publication Date: 2020-01-01 Application Number: 18756855.5 Filing Date: 2018-02-21 Inventor: Akselrod, Gleb M.   Weidman, Mark C.   Josberger, Erik Edward   Assignee: ELWHA LLC   IPC: G01S7/481
12 US2020018830A1
LIGHT DETECTION AND RANGING SENSOR UNIT
Publication/Patent Number: US2020018830A1 Publication Date: 2020-01-16 Application Number: 16/411,791 Filing Date: 2019-05-14 Inventor: Wagner, Horst   Bojarski, Bernard J.   Assignee: Conti Temic microelectronic GmbH   Continental Automotive GmbH   IPC: G01S7/486 Abstract: A light detection and ranging (“Lidar”) sensor unit having a light signal source, a two dimensional array of a plurality of light sensitive detectors converting impinging light into an electronic signal, a readout integrated circuit, and a processing unit. The readout integrated circuit including a plurality of memory units, each memory unit having an input connected to an output of one of said light sensitive detectors for receiving the electronic signal of the light sensitive detector. Each memory unit also including at least one array with I columns and J rows of analog memory cells, one column select line per column and one row select line per row. Each analog memory cell including an AND-gate with a first input being connected to the corresponding column select line and a second input being connected to the corresponding row select line to select the analog memory cell for write and read.
13 US2020096619A1
TIME OF FLIGHT SENSOR
Publication/Patent Number: US2020096619A1 Publication Date: 2020-03-26 Application Number: 16/495,830 Filing Date: 2018-03-21 Inventor: Morcom, Christopher John   Assignee: Photonic Vision Limited   IPC: G01S7/486 Abstract: A time of flight sensor has an image region (8) and a storage region (10) on a device which may be a CCD. A pulse of light illuminates an object, and an image illumination stripe is recorded on the image region. In a distance determining step, the image region is clocked after emitting the pulse of light and the row in which the image illumination stripe is illuminated gives a measure of the distance to the object. The apparatus can self calibrate by emitting a pulse of light without clocking the image region.
14 EP3676632A1
COMBINATION PHOTODETECTOR ARRAYS FOR EXTENDED DYNAMIC RANGE
Publication/Patent Number: EP3676632A1 Publication Date: 2020-07-08 Application Number: 18786530.8 Filing Date: 2018-09-24 Inventor: Onal, Caner   Gassend, Blaise   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S7/486
15 CN111164452A
用于扩展的动态范围的组合光电检测器阵列
Under Examination
Publication/Patent Number: CN111164452A Publication Date: 2020-05-15 Application Number: 201880062259.5 Filing Date: 2018-09-24 Inventor: C.奥纳尔   B.加森德   P-y.德罗兹   Assignee: 伟摩有限责任公司   IPC: G01S7/486 Abstract: 本公开涉及改进LIDAR系统的动态范围的方法和系统。示例系统100包括单片集成在共享衬底102上的多个单光子光电检测器110和至少一个附加的光电检测器120。多个单光子光电检测器110和至少一个附加的光电检测器120被配置为检测来自共享视场的光。系统还包括被配置为执行操作的控制器150。操作包括:从多个单光子光电检测器110和至少一个附加的光电检测器120接收相应的光电检测器信号;从以下至少两个中选择光电检测器信号:两个接收的光电检测器信号和通过组合两个接收的光电检测器信号形成的组合光电检测器信号;以及基于所选择的光电检测器信号来确定视场中的光的强度。实施例涉及具有不同的相应光敏性、频谱响应性和/或动态范围属性的不同的光电检测器(例如,硅光电倍增管SiPM和线性模式雪崩光电二极管LmAPD)的组合。这种检测器组合可以在高光水平下提供弱光检测以及高动态范围(例如,具有回射、近范围物体的场景等)。示例实施例包括以单片方式集成的雪崩二极管APD和SiPM的组合。作为示例实施例,可以使用一个或两个附加的光刻掩模制造步骤在与SiPM检测器阵列相同的衬底上制造APD设备。在弱光情况下,逻辑单元130可以选择SiPM信号代表实际光强度,并且忽略有噪声的或非线性的APD信号。在强光情况下,逻辑单元130可以选择APD信号代表实际光强度,并且忽略饱和的SiPM信号。在其他光水平情况下,来自APD和SiPM的相应信号可以以不同的比例混合或加权,以提供相对于检测到的光子的基本线性的信号强度。
16 CN110780282A
一种具有同步并行扫描功能的多线激光雷达和控制方法
Under Examination
Title (English): A Multi-line Lidar and Control Method with Synchronous Parallel Scanning Function
Publication/Patent Number: CN110780282A Publication Date: 2020-02-11 Application Number: 201911022173.2 Filing Date: 2019-10-25 Inventor: 张石   李亚锋   鲁佶   Assignee: 深圳煜炜光学科技有限公司   IPC: G01S7/484 Abstract: 本发明涉及激光雷达技术领域,提供了一种具有同步并行扫描功能的多线激光雷达和控制方法。激光雷达包括宽谱波长激光器,用于在空间上产生指定波长范围的激光信号;输出阵列滤波器与所述宽谱波长激光器耦合,同时在空间上过滤所述宽谱波长激光器发射的激光信号,产生并发的至少两个激光信号,每个激光信号对应一指定中心波长;探测器阵列用于在空间上同时接收并处理经过所述输入阵列滤波器滤波后形成的由不同中心波长表征的激光信号。本发明有效提高了多线激光雷达的扫描频率,降低了控制难度。
17 US2020103507A1
LIDAR 2D RECEIVER ARRAY ARCHITECTURE
Publication/Patent Number: US2020103507A1 Publication Date: 2020-04-02 Application Number: 16/148,550 Filing Date: 2018-10-01 Inventor: Kirillov, Boris   Gigl, Thomas   Hennecke, Marcus Edward   Assignee: Infineon Technologies AG   IPC: G01S7/486 Abstract: A LIDAR system includes a receiver configured to receive a reflected light beam from a receiving direction, the reflected light beam having an oblong shape that extends in a lengthwise direction. The LIDAR receiver includes a two-dimensional (2D) photodetector array including a plurality of pixel rows and a plurality of pixel columns, wherein the reflected light beam, incident on the 2D photodetector array, extends in the lengthwise direction along at least one receiving pixel column of the plurality of pixel columns according to the receiving direction; an analog readout circuit including a plurality of output channels configured to read out electrical signals; and a multiplexer configured to, for each reading cycle, selectively couple receiving pixels of the at least one receiving column to the plurality of output channels based on the receiving direction, while decoupling non-receiving pixels from the plurality of output channels based on the receiving direction.
18 US2020158871A1
COMBINING LASER PULSE TRANSMISSIONS IN LIDAR
Publication/Patent Number: US2020158871A1 Publication Date: 2020-05-21 Application Number: 16/751,686 Filing Date: 2020-01-24 Inventor: Rezk, Mina A.   Bussat, Jean-marie   Assignee: Apple Inc.   IPC: G01S17/10 Abstract: A light ranging and detection (LiDAR) device may combine the transmission of laser pulses. Different trains of pulses from different transmitters may be combined and transmitted to an environment via a common optical path. The laser pulses transmitted from one train of pulses may be in a polarization state that is orthogonal to a polarization state for the laser pulses of the other train of pulses. Reflections for the different trains of pulses may be received via the common optical path and separated according to polarization state. Reflections of the train of pulses may be directed to one receiver and reflections of the other train of pulses may be directed to a different receiver. The transmission delta between the different trains of pulses may be dynamically configured. The pulse repetition rate of each train of pulses may also be configured.
19 CN111190165A
一种串行波束合成实现方法
Under Examination
Publication/Patent Number: CN111190165A Publication Date: 2020-05-22 Application Number: 202010018349.3 Filing Date: 2020-01-08 Inventor: 王冬华   夏东方   沈洋   Assignee: 中国船舶重工集团公司第七二四研究所   IPC: G01S7/486 Abstract: 本发明涉及一种串行波束合成实现方法,属于雷达信号处理技术领域。M根光纤发送N组DBF前I/Q数据,则每根光纤由N/M组I/Q数据组成,本发明首先根据光纤报文格式组合生成与之相匹配的子DBF系数,在不解析N组DBF前I/Q数据情况下,M根光纤的串行I/Q数据分别与对应的子DBF系数相乘,最后再进行求和,从而合成多通道DBF后I/Q数据。本发明避免了繁琐的并行N组DBF前I/Q数据解析过程;在改变光纤数量M的情况下,仅需要更新子DBF系数即可,FPGA软件模块可以复用,有效增强软件架构的可扩展性。
20 EP3602109A1
SYSTEMS AND METHODS FOR MODULATED IMAGE CAPTURE
Publication/Patent Number: EP3602109A1 Publication Date: 2020-02-05 Application Number: 18715056.0 Filing Date: 2018-03-16 Inventor: Poikonen, Jonne   Paasio, Ari   Laiho, Mika   Assignee: Kovilta Oy   IPC: G01S7/486