Of Pulse Transit Time Patents (Class 356/5.01)
  • Patent number: 12248100
    Abstract: A computing system may operate a LIDAR device to emit and detect light pulses in accordance with a time sequence including standard detection period(s) that establish a nominal detection range for the LIDAR device and extended detection period(s) having durations longer than those of the standard detection period(s). The system may then make a determination that the LIDAR detected return light pulse(s) during extended detection period(s) that correspond to particular emitted light pulse(s). Responsively, the computing system may determine that the detected return light pulse(s) have detection times relative to corresponding emission times of particular emitted light pulse(s) that are indicative of one or more ranges. Given this, the computing system may make a further determination of whether or not the one or more ranges indicate that an object is positioned outside of the nominal detection range, and may then engage in object detection in accordance with the further determination.
    Type: Grant
    Filed: January 15, 2024
    Date of Patent: March 11, 2025
    Assignee: Waymo LLC
    Inventor: Mark Alexander Shand
  • Patent number: 12248104
    Abstract: The invention relates to an optical sensor according to the time-of-flight principle for detecting objects in a monitored region, having a first transmitter for transmitting first light pulses into the monitored region, a first receiver for detecting first light pulses radiated back by a first object to be detected in the monitored region, a second transmitter for transmitting second light pulses into the monitored region, a second receiver for detecting second light pulses radiated back by the first object or by a further object in the monitored region, a control and evaluation unit which is designed to control the first transmitter and to evaluate the first light pulses detected by the first receiver and to control the second transmitter and to evaluate the second light pulses detected by the second receiver, characterised in that between the first transmitter and the second receiver a first optical reference path is formed, between the second transmitter and the first receiver a second optical reference pa
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: March 11, 2025
    Assignee: Pepperl+Fuchs SE
    Inventors: Lutz Lohmann, Hinrik Weber
  • Patent number: 12242001
    Abstract: A LiDAR sensor includes a first lens, a first laser source configured to emit a plurality of first light pulses to be collimated by the first lens, a flood illumination source configured to emit a plurality of second light pulses as diverging light rays, a second lens configured to receive and focus (i) a portion of any one of the plurality of first light pulses and (ii) a portion of any one of the plurality of second light pulses that are reflected off of the one or more objects, a detector configured to detect (i) the portion of any one of the plurality of first light pulses and (ii) the portion of any one of the plurality of second light pulses, and a processor configured to construct a three-dimensional image of the one or more objects based on the detected portions of first light pulses and second light pulses.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: March 4, 2025
    Assignee: Cepton Technologies, Inc.
    Inventor: Mark Armstrong McCord
  • Patent number: 12242002
    Abstract: A laser radar, comprising: a laser (10): used for emitting a laser light beam; a probe (20): used for receiving the reflected laser light beam; and a set of transceiver structures (30): used for receiving the laser light beam emitted along a preset direction and conveying the laser light beam to the probe (20), the transceiver structures (30) being arranged coaxially with the laser (10), the transceiver structures (30) comprising a vertical field of view adjustment unit, and the vertical field of view adjustment unit making the laser light beam have a non-uniform distribution in the vertical field of view range and/or adjusting the vertical field of view range of the laser.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: March 4, 2025
    Assignee: Velodyne Lidar USA, Inc.
    Inventor: Shaoqing Xiang
  • Patent number: 12228653
    Abstract: An example system includes an infrared emitter to output infrared light towards a target, where the infrared light reflects from the target to produce reflected infrared light, and a detector to receive the reflected infrared light and to provide a signal based on the reflected infrared light. The system also includes a lighting system that includes a light emitter to output visible light, a mirror configured (i) to allow the visible light to pass through the mirror and to reflect the reflected infrared light onto the detector, or (ii) to allow the reflected infrared light to pass through the mirror and onto the detector and to reflect the visible light, and one or more optical elements configured to affect the visible light and the reflected infrared light.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: February 18, 2025
    Assignee: Magna Electronics, LLC
    Inventors: Bernard de Mersseman, Peter Hansson
  • Patent number: 12222453
    Abstract: The invention concerns a TOF vision camera and proposes an electronic control circuit comprising a modulation circuit MOD for modulating the carrier clock signal, applying a camera-specific pulse position modulation function k(t) in order to output a modulation clock signal fe which is applied in the camera as a camera light source modulation signal S-LED, in order to control the emission of a series of light pulses SE and in order to synchronously control the N capture phases ST0, ST1, ST2, ST3 of the matrix image sensor CI of the camera. This modulation clock signal fe is such that the clock pulses fe have a constant pulse duration Tp, fixed by the carrier frequency fp, where Tp=½fp, and with a variable time interval Toff between two successive pulses, modulated by said modulation function k(t), said time interval being at least equal to the pulse duration, defining a modulation clock cycle ratio fe that is variable but less than or equal to 50%.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: February 11, 2025
    Assignee: TELEDYNE E2V SEMICONDUCTORS SAS
    Inventors: Pierre Fereyre, Christophe Mailland, Pierre-Emmanuel Ville
  • Patent number: 12222424
    Abstract: Devices, systems, and methods are provided for reducing interference of light detection and ranging (LIDAR) emissions. A vehicle may identify location information associated with a location of the vehicle. The vehicle may select, based on the location information, a modulation code associated with a LIDAR photodiode of the vehicle. The vehicle may emit, using the LIDAR photodiode, one or more LIDAR pulses based on the modulation code.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: February 11, 2025
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Yahia Tachwali
  • Patent number: 12216270
    Abstract: An optical distance measuring system includes a first transmitter, a first solid state device, and a receiver. The first transmitter is configured to generate a first optical waveform. The first solid state device is configured to receive the first optical waveform and steer the first optical waveform toward a target object. The receiver is configured to receive the first optical waveform reflected off of the first target object and determine a distance to the first target object based on a time of flight from the transmitter to the first target object and back to the receiver.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: February 4, 2025
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: David P. Magee, Nirmal C. Warke, Stephen Aldridge Shaw, Terry Alan Bartlett, Rick Oden
  • Patent number: 12219267
    Abstract: A light source module includes an array of illumination elements and an optional projecting lens. The light source module is configured to receive or generate a control signal for adjusting different ones of the illumination elements to control a light field emitted from the light source module. In some embodiments, the light source module is also configured to adjust the projecting lens responsive to objects in an illuminated scene and a field of view of an imaging device. A controller for a light source module may determine a light field pattern based on various parameters including a field of view of an imaging device, an illumination sensitivity model of the imaging device, depth, ambient illumination and reflectivity of objects, configured illumination priorities including ambient preservation, background illumination and direct/indirect lighting balance, and so forth.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: February 4, 2025
    Assignee: Apple Inc.
    Inventors: Bosheng Zhang, Angelo M Alaimo, Bryan Dang
  • Patent number: 12208790
    Abstract: The present disclosure introduces a vehicle safety control system and a vehicle safety control method, which recognize, in advance, an obstacle approaching the vehicle around the vehicle, and, when the vehicle and the obstacle come near each other in distance, operate SVM to determine the possibility of collision between the vehicle and the obstacle in advance, and prevent a collision accident by controlling the vehicle on the basis of the possibility of collision between the vehicle and the obstacle.
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: January 28, 2025
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventors: Min Seok Kim, Tae Min Kwon
  • Patent number: 12204027
    Abstract: A distance measuring device is disclosed that includes a controller operably coupled with a receiver to receive different amplification channels. The controller includes a time of flight core configured to determine time of flight information for the light pulse; and a decider block configured to determine a measurement correction value for the device based on a determination of a presence of a reflective background that is different than a measurement correction value selected for the device when there exists a diffuse background or an absence of a background into a reading field.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: January 21, 2025
    Assignee: Datalogic IP Tech S.r.l.
    Inventors: Salvatore Valerio Cani, Enrico Lorenzoni, Lorenzo Girotti
  • Patent number: 12196854
    Abstract: Doppler correction of phase-encoded LIDAR includes a code indicating a sequence of phases for a phase-encoded signal, and determining a first Fourier transform of the signal. A laser optical signal is used as a reference and modulated based on the code to produce a transmitted phase-encoded optical signal. A returned optical signal is received in response. The returned optical signal is mixed with the reference. The mixed optical signals are detected to produce an electrical signal. A cross spectrum is determined between in-phase and quadrature components of the electrical signal. A Doppler shift is based on a peak in the cross spectrum. A device is operated based on the Doppler shift. Sometimes a second Fourier transform of the electrical signal and the Doppler frequency shift produce a corrected Fourier transform and then a cross correlation. A range is determined based on a peak in the cross correlation.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: January 14, 2025
    Assignee: AURORA OPERATIONS, INC.
    Inventors: Stephen C. Crouch, Randy R. Reibel, James Curry, Michelle Milvich, Krishna Rupavatharam
  • Patent number: 12198424
    Abstract: Systems, methods, and software of inspecting growth areas for plants. In one embodiment, an inspection system captures a plurality of digital images of the growth area from different angles in relation to the growth area, and processes the digital images to identify a boundary of the growth area in the digital images. The inspection system combines the digital images based on the boundary identified in the digital images to generate a composite image of the growth area, and performs image processing on the composite image to detect one or more deficient growth regions in the growth area. The inspection system highlights the deficient growth regions in the composite image, and displays the composite image with the deficient growth regions highlighted.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: January 14, 2025
    Assignee: Nokia Technologies Oy
    Inventor: Jacquilene Jacob
  • Patent number: 12187187
    Abstract: The present disclosure relates to determining a first illumination level corresponding to an area based at least on a first illumination detection obtained using a first illumination detector corresponding to a machine. A second illumination level corresponding to the area may be determined based at least on a second illumination detection obtained using a second illumination detector corresponding to the machine. Based at least on the first illumination level and the second illumination level, a scene illumination state of the area may be determined. Based at least on the scene illumination state, one or more lights of the machine may be controlled.
    Type: Grant
    Filed: August 16, 2023
    Date of Patent: January 7, 2025
    Assignee: NVIDIA CORPORATION
    Inventors: Keerthi Raj Nagaraja, Arjun Gupta, Abhishek Bajpayee, Kivanc Temel, Dylan Doblar, Sai Krishnan Chandrasekar, Yu Wang
  • Patent number: 12181611
    Abstract: Methods for detecting a time-of-flight include: emitting a light pulse toward a target; detecting a presence of light received at a light detector; obtaining a delay time between emitting the light pulse and detecting the presence of the light at the light detector; responsive to obtaining the delay time, (a) updating an overall intensity counter that counts a total number of delay times that have been obtained and (b) updating a delay time counter out of a plurality of different delay time counters, wherein each delay time counter counts a total number of delay times obtained that have a corresponding delay time value; and monitoring a threshold of each delay time counter to determine whether a threshold value is exceeded.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 31, 2024
    Assignee: AMS INTERNATIONAL AG
    Inventors: Thomas Jessenig, Robert Kappel, Manfred Lueger, Christian Mautner
  • Patent number: 12181285
    Abstract: An electronic apparatus and a method of controlling thereof are provided. The method of controlling the electronic apparatus includes obtaining a light detection and ranging (LiDAR) map for estimating a location of the electronic apparatus, based on an event for obtaining the location of the electronic apparatus occurring, obtaining geomagnetic information around the electronic apparatus using a geomagnetic sensor, identifying a direction of the electronic apparatus based on the obtained geomagnetic information, and obtaining the location of the electronic apparatus on the LiDAR map based on the identified direction and the LiDAR sensor.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: December 31, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yosub Park, Hyunki Hong, Jewoong Ryu, Sejin Kwak
  • Patent number: 12169254
    Abstract: A Lidar system is provided. The Lidar system comprise: a light source configured to emit a multi-pulse sequence to measure a distance between the Lidar system and a location in a three-dimensional environment, and the multi-pulse sequence comprises multiple pulses having a temporal profile; a photosensitive detector configured to detect light pulses from the three-dimensional environment; and one or more processors configured to: determine a coding scheme comprising the temporal profile, wherein the coding scheme is determined dynamically based on one or more real-time conditions including an environment condition, a condition of the Lidar system or a signal environment condition; and calculate the distance based on a time of flight of a sequence of detected light pulses, wherein the time of flight is determined by determining a match between the sequence of detected light pulses and the temporal profile.
    Type: Grant
    Filed: May 28, 2024
    Date of Patent: December 17, 2024
    Assignee: HESAI TECHNOLOGY CO., LTD.
    Inventors: Xuezhou Zhu, Shaoqing Xiang
  • Patent number: 12163827
    Abstract: By a control device, a control method, or a non-transitory tangible storage medium storing a control program for controlling an optical sensor that includes a plurality of single photon avalanche diodes for each light reception pixel and receives light from a sensing area, a light reception signal waveform is acquired. The light reception signal waveform includes: a reflection light output component; and an external light output component, and a reflection intensity of the reflection light is estimated based on a correlation between a reflection light response number and an external light response number.
    Type: Grant
    Filed: February 15, 2024
    Date of Patent: December 10, 2024
    Assignee: DENSO CORPORATION
    Inventor: Kenta Azuma
  • Patent number: 12153134
    Abstract: A light ranging system can include a laser device and an imaging device having photosensors. The laser device illuminates a scene with laser pulse radiation that reflects off of objects in the scene. The reflections can vary greatly depending on the reflecting surface shape and reflectivity. The signal measured by photosensors can be filtered with a number of matched filter designed according to profiles of different reflected signals. A best matched filter can be identified, and hence information about the reflecting surface and accurate ranging information can be obtained. The laser pulse radiation can be emitted in coded pulses by allowing weights to different detection intervals. Other enhancements include staggering laser pulses and changing an operational status of photodetectors of a pixel sensor, as well as efficient signal processing using a sensor chip that includes processing circuits and photosensors.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: November 26, 2024
    Assignee: Ouster, Inc.
    Inventors: Angus Pacala, Mark Frichtl
  • Patent number: 12153140
    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 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.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: November 26, 2024
    Assignee: APPLE INC.
    Inventors: David Silver, Eitan Hirsh, Moshe Laifenfeld, Tal Kaitz
  • Patent number: 12146954
    Abstract: Embodiments describe a solid state electronic scanning LIDAR system that includes a scanning focal plane transmitting element and a scanning focal plane receiving element whose operations are synchronized so that the firing sequence of an emitter array in the transmitting element corresponds to a capturing sequence of a photosensor array in the receiving element. During operation, the emitter array can sequentially fire one or more light emitters into a scene and the reflected light can be received by a corresponding set of one or more photosensors through an aperture layer positioned in front of the photosensors. Each light emitter can correspond with an aperture in the aperture layer, and each aperture can correspond to a photosensor in the receiving element such that each light emitter corresponds with a specific photosensor in the receiving element.
    Type: Grant
    Filed: July 6, 2023
    Date of Patent: November 19, 2024
    Assignee: Ouster, Inc.
    Inventors: Angus Pacala, Mark Frichtl
  • Patent number: 12145214
    Abstract: A laser processing head includes: a housing; an entrance portion; an adjustment portion; and a condensing portion. A distance between a third wall portion and a fourth wall portion facing each other in a second direction is shorter than a distance between a first wall portion and a second wall portion facing each other in a first direction. The housing is configured to be attached to an attachment portion of a laser processing apparatus, with at least one of the first wall portion, the second wall portion, the third wall portion, and a fifth wall portion disposed on the side of the attachment portion. The condensing portion is disposed on a sixth wall portion, and is offset toward the fourth wall portion in the second direction.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: November 19, 2024
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Takeshi Sakamoto, Junji Okuma
  • Patent number: 12140680
    Abstract: An apparatus comprising a housing, a mount configured to be coupled to a motor to horizontally move the apparatus, a wide-angle lens coupled to the housing, the wide-angle lens being positioned above the mount thereby being along an axis of rotation, the axis of rotation being the axis along which the apparatus rotates, an image capture device within the housing, the image capture device configured to receive two-dimensional images through the wide-angle lens of environment, and a LiDAR device within the housing, the LiDAR device configured to generate depth data based on the environment.
    Type: Grant
    Filed: March 28, 2024
    Date of Patent: November 12, 2024
    Assignee: Matterport, Inc.
    Inventors: David Alan Gausebeck, Kirk Stromberg, Louis D. Marzano, David Proctor, Naoto Sakakibara, Simeon Trieu, Kevin Kane, Simon Wynn
  • Patent number: 12140752
    Abstract: A micro-electromechanical system (MEMS) apparatus has an array of micro-mirrors and a control circuit for rotating the micro-mirrors synchronously at a resonant frequency. The MEMS apparatus includes elements with different Coefficients of Thermal Expansion (CTE) for a die substrate coupled to the array of micro-mirrors, a die attach layer, a chip package coupled to the die substrate and a printed circuit board coupled to the chip package. The apparatus provides mechanisms for reducing changes in the resonant frequency due to changes in temperature causing stresses due to a mismatch between the CTE of the different elements. A thermoelectric cooler is used, along with the optional addition of heating resistors, additional pins to distribute stress, and the widened vias allowing room for the pins to bend and relieve stress on the chip package.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: November 12, 2024
    Assignee: Beijing Voyager Technology Co., Ltd.
    Inventors: Sae Won Lee, Youmin Wang, Anan Pan
  • Patent number: 12140679
    Abstract: An apparatus comprising a housing, a mount configured to be coupled to a motor to horizontally move the apparatus, a wide-angle lens coupled to the housing, the wide-angle lens being positioned above the mount thereby being along an axis of rotation, the axis of rotation being the axis along which the apparatus rotates, an image capture device within the housing, the image capture device configured to receive two-dimensional images through the wide-angle lens of environment, and a LiDAR device within the housing, the LiDAR device configured to generate depth data based on the environment.
    Type: Grant
    Filed: March 28, 2024
    Date of Patent: November 12, 2024
    Assignee: Matterport, Inc.
    Inventors: David Alan Gausebeck, Kirk Stromberg, Louis D. Marzano, David Proctor, Naoto Sakakibara, Simeon Trieu, Kevin Kane, Simon Wynn
  • Patent number: 12136276
    Abstract: Disclosed are methods, devices, and computer-readable media for detecting lanes and objects in image frames of a monocular camera. In one embodiment, a method is disclosed comprising receiving a plurality of images; identifying a horizon in the plurality of images by inputting the plurality of images into a deep learning (DL) model (either stored on a local device or via a network call); determining one or more camera parameters based on the horizon; and storing or using the camera parameters to initialize a camera.
    Type: Grant
    Filed: December 1, 2023
    Date of Patent: November 5, 2024
    Assignee: MOTIVE TECHNOLOGIES, INC.
    Inventors: Ali Hassan, Ahmed Ali, Syed Wajahat Ali Shah Kazmi
  • Patent number: 12130382
    Abstract: The present application is applicable to the technical field of a LiDAR, and provides a LiDAR control method, a terminal apparatus, and a computer-readable storage medium. The LiDAR control method includes the following steps: acquiring first echo data; when an oversaturated region is determined to exist according to the first echo data, controlling LiDAR to measure a scanning region according to a second preset scanning mode to obtain second echo data; performing data fusion processing based on the first echo data and the second echo data to obtain target data. The LiDAR is controlled to measure according to the first preset scanning mode and a second preset scanning mode, and then fusion is performed based on the measured first echo data and second echo data, thereby effectively eliminating a problem of signal crosstalk caused by too high reflection energy of an object with high reflectivity, and effectively improving measurement accuracy.
    Type: Grant
    Filed: December 26, 2022
    Date of Patent: October 29, 2024
    Assignee: SUTENG INNOVATION TECHNOLOGY CO., LTD.
    Inventor: Changsheng Gong
  • Patent number: 12123953
    Abstract: A three-dimensional depth capture system based on active light projection. The system includes a light projector, a camera, and a data processing system. The light projector can project a spatial-temporal light pattern over a two-dimensional field-of-view configured to measure three-dimensional depth of objects illuminated by the light pattern. The light pattern can be projected as a finite sequence of discrete frames. A propagating light field of each of discrete frame can have a spatial intensity pattern. The projected discrete frames can be mathematically described as a product of separated spatial and temporal functions, where the camera functions to image objects illuminated by the projector. The camera can be positioned at a finite baseline distance from the projector, following geometrical guidance of structured light triangulation depth sensing. The camera can have a time-of-flight (TOF) sensor, where the sensor is temporally synchronized with the projector.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: October 22, 2024
    Assignee: Focal Length LLC
    Inventors: Robert John Collier, Trevor Shay Strickler
  • Patent number: 12117531
    Abstract: A light emitting element emits detecting light toward an outside area of a vehicle. A light receiving element outputs a light receiving signal corresponding to reflected light. A processor detects information of the outside area on the basis of the light receiving signal. A translucent cover forms a part of an outer surface of the vehicle, and has a plurality of flat portions allowing passage of the detecting light. The processor excludes, from the information to be detected, a position corresponding a boundary portion between adjacent ones of the flat portions.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: October 15, 2024
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Misako Kamiya
  • Patent number: 12117569
    Abstract: A method of calibrating a LiDAR sensor mounted on a vehicle includes storing a reference three-dimensional image acquired by the LiDAR sensor while the LiDAR sensor is in an expected alignment with respect to the vehicle. The reference three-dimensional image includes a first image of a fixed feature on the vehicle. The method further includes, acquiring, using the LiDAR sensor, a three-dimensional image including a second image of the fixed feature, and determining a deviation from the expected alignment of the LiDAR sensor with respect to the vehicle by comparing the second image of the fixed feature in the three-dimensional image to the first image of the fixed feature in the reference three-dimensional image.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: October 15, 2024
    Assignee: Cepton Technologies, Inc.
    Inventors: Dongyi Liao, Zukai Wang, Mark A. McCord, Chao Gu
  • Patent number: 12111426
    Abstract: There is provided a time of flight sensor including a light source, a first pixel, a second pixel and a processor. The first pixel generates a first output signal without receiving reflected light from an external object illuminated by the light source. The second pixel generates a second output signal by receiving the reflected light from the external object illuminated by the light source. The processor calculates deviation compensation and deviation correction associated with temperature variation according to the first output signal to accordingly calibrate a distance calculated according to the second output signal.
    Type: Grant
    Filed: March 31, 2023
    Date of Patent: October 8, 2024
    Inventors: Tso-Sheng Tsai, Yueh-Lin Chung, Shin-Lin Wang
  • Patent number: 12111423
    Abstract: An electronic apparatus capable of determining a distance to an object based on reflected light provided by a reflection of a pulsed light on the object includes an input terminal configured to receive a signal of intensity of reception light. Processing circuitry determines a measurement range capable of specifying a peak of the reception light based on the intensity of the reception light, detects the reflected light by specifying the peak of the reception light within the measurement range, determines, based on the measurement range, a duration from when the pulsed light is emitted until when the reflected light is received, and determines a distance from the electronic apparatus to the object according to the duration.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: October 8, 2024
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidenori Okuni, Tuan Thanh Ta, Satoshi Kondo, Akihide Sai
  • Patent number: 12105224
    Abstract: Disclosed is a single pass light detection and ranging (LiDAR) laser method, including building a coarse histogram, detecting a first peak of laser pulses in the coarse histogram, determining whether the first peak height is greater than a first threshold and a location of the first peak is less than or equal to a second threshold, when determining that the first peak height is greater than the first threshold and the location of the first peak is less than or equal to the second threshold, building a fine histogram, and detecting a peak of laser pulses in the fine histogram, and when determining that the first peak height is less than or equal to the first threshold and the location of the first peak is greater than the second threshold, continuing the building of the coarse histogram, and detecting a second peak of the laser pulses in the coarse histogram.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: October 1, 2024
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yibing Michelle Wang, Chunji Wang
  • Patent number: 12098924
    Abstract: A function control method can be applied to a first device configured with a smart space semantic map and include: determining a first location of the first device in the smart space semantic map; determining, based on the first location, a second device in the smart space semantic map, the second device having the capability of executing a first function; and performing a predetermined action, to cause the second device to execute the first function.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: September 24, 2024
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Jinping Qu, Juejia Zhou, Dian Fan
  • Patent number: 12099143
    Abstract: An electromagnetic wave irradiated by an irradiator (10) is incident on and reflected by a movable reflection unit (20). The control unit (30) controls the irradiator (10) and the movable reflection unit (20). A sensor (40) is disposed at a position through which the electromagnetic wave when an irradiation direction of the electromagnetic wave is moved in a first direction. Then, the control unit (30) executes the following processing in setting a movement range of the movable reflection unit (20). First, a detection value (first detection value) of the sensor (40) when light is irradiated at a first position Sa positioned ahead of the sensor (40) in the first direction is recognized. Next, a detection value (second detection value) of the sensor (40) when light is irradiated at a second position Sb positioned behind the sensor (40) in the first direction is recognized. Then, the movement range of the movable reflection unit (20) is set using the first detection value and the second detection value.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: September 24, 2024
    Assignee: PIONEER CORPORATION
    Inventors: Koji Yamamoto, Shogo Miyanabe
  • Patent number: 12092766
    Abstract: Various technologies described herein pertain to injection locking on-chip laser(s) and external on-chip resonator(s). A system includes a first integrated circuit chip and a second integrated circuit chip. The first integrated circuit chip and the second integrated circuit chip are separate integrated circuit chips and can be optically coupled to each other. The first integrated circuit chip includes a laser configured to emit light via a first path and a second path. The second integrated circuit chip includes a resonator formed of an electrooptic material. The resonator can receive the light emitted by the laser of the first integrated circuit chip via the first path and return feedback light to the laser of the first integrated circuit chip via the first path. The feedback light can cause injection locking of the laser to the resonator to control the light emitted by the laser (e.g., via the first and second paths).
    Type: Grant
    Filed: October 10, 2022
    Date of Patent: September 17, 2024
    Assignee: GM Cruise Holdings LLC
    Inventors: Jacob Levy, Ayan Chakrabarty, Vala Fathipour, Karim El Amili
  • Patent number: 12092767
    Abstract: A method of a sensing device, comprising steps of emitting, by a light source of the sensing device, a light pulse in each of n cycles; measuring, by a single photon avalanche diodes array of the sensing device, a time-of-flight value with a resolution of m in each of the n cycles to generate n raw data frames based on a reflected light of the light pulse; performing, by a pre-processing circuit of the sensing device, a pre-processing operation to n raw data frames to generate k pre-processed data frames, wherein m, n and k are natural numbers, and k is smaller than n; and generating, by post-processor of the sensing device, a histogram according to the k pre-processed data frames and analyzing the histogram to output a depth result.
    Type: Grant
    Filed: April 11, 2023
    Date of Patent: September 17, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chin Yin, Shang-Fu Yeh, Calvin Yi-Ping Chao, Chih-Lin Lee, Meng-Hsiu Wu
  • Patent number: 12092762
    Abstract: A LiDAR sensing device including: a sensing light source unit configured to radiate sensing light; a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source unit; a scanner unit configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target; a light receiving lens configured to pass the incident light reflected from the scanner unit, and integrated with the light transmitting reflector; a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and an optical detecting unit into which the incident light reflected from the light receiving reflector is incident.
    Type: Grant
    Filed: July 11, 2021
    Date of Patent: September 17, 2024
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventors: Won Gyum Kim, Young Shin Kim, Kyung Rin Kim, Sung Eun Jo
  • Patent number: 12085671
    Abstract: A distance detector 10 includes a light projecting unit 100 which projects light toward a target body, a light receiving unit 200 which receives a reflected light from the target body, a time detection unit 310 which detects a light receiving time from the projecting of measuring light by the light projecting unit 100 to the receiving of the reflected light by the light receiving unit 200, a calculation unit 320 which calculates the distance to the target body based on a detection result of the light receiving time by the time detection unit 310, and an evaluation unit 340 which evaluates the reliability of a calculation result of the distance to the target body by the calculation unit 320 based on a deviation of the distance corresponding to the calculation result from a reference value regarding the distance to the target body.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: September 10, 2024
    Assignees: NIKON VISION CO., LTD., NIKON CORPORATION
    Inventors: Takehito Nonomura, Takeshi Inoue
  • Patent number: 12078722
    Abstract: A distance measurement device includes: an emission and exposure controller which controls emission timing and an emission period of irradiation light for an emitter and controls exposure timing and an exposure period of reflected light for a solid-state image sensor; and a data processor which includes a calculator that calculates distance data and light intensity data based on signals of pixels outputted by a light receiver. The emission and exposure controller controls the exposure timing to perform exposure to reflected light from a first distance and not to perform exposure to reflected light from a second distance longer than the first distance in a distance measurement range. The data processor includes a determination unit which determines reliability of the distance data in accordance with a signal amount of the light intensity data for each of the pixels.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: September 3, 2024
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventor: Seiji Nakamura
  • Patent number: 12074636
    Abstract: A method by which a transmission terminal transmits a signal in an optical wireless communication system can comprise: transmitting a first optical signal including a reference signal to a reception terminal having established a communication link with the transmission terminal; receiving feedback information about the first optical signal from the reception terminal; and transmitting a second optical signal to the reception terminal on the basis of the feedback information, wherein an orbital angular momentum (OAM) mode of the second optical signal can be selected on the basis of the feedback information.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: August 27, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Hojae Lee, Sangrim Lee, Kijun Jeon
  • Patent number: 12072419
    Abstract: The disclosed technology provides solutions for generating synthetic 3D environments, In some aspects, the disclosed technology includes a process of synthetic environment generation that includes steps for collecting sensor data corresponding with a three-dimensional (3D) space, generating a 3D mesh based on the sensor data, and generating one or more synthetic 3D objects based on the 3D mesh and the sensor data. In some aspects, the process can further include steps for generating a 3D synthetic environment comprising the one or more synthetic 3D objects, wherein the 3D synthetic environment is generated based on the 3D mesh. Systems and machine-readable media are also provided.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: August 27, 2024
    Assignee: GM Cruise Holdings LLC
    Inventors: Benjamin Goldstein, Gen Nishida, Eileen Bai
  • Patent number: 12066573
    Abstract: An optoelectronic sensor for detecting an object in a monitored zone having at least one light source for transmitting transmitted light, a light receiver having a reception optics arranged upstream for generating received signals from light beams remitted at the object, and a control and evaluation unit for acquiring information on the object from the received signals has a beam splitter arrangement arranged downstream of the light source for splitting the transmitted light into a plurality of transmitted light beams separated from one another, wherein the beam splitter arrangement includes a plurality of switchable beam splitters for splitting the transmitted light.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: August 20, 2024
    Assignee: SICK AG
    Inventor: Siegfried Ringwald
  • Patent number: 12066575
    Abstract: In one embodiment, a lidar system includes a light source configured to emit pulses of light. The emitted pulses of light include one or more series of standard-resolution pulses alternating with one or more series of high-resolution pulses. Each series of the standard-resolution pulses includes multiple pulses having a standard pulse period, and each series of the high-resolution pulses includes multiple pulses having a high-resolution pulse period. The standard pulse period is greater than or equal to a round-trip time associated with a maximum range of the lidar system, and the high-resolution pulse period is less than the standard pulse period. The lidar system also includes a scanner configured to scan at least a portion of the emitted pulses of light across a field of regard.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: August 20, 2024
    Assignee: Luminar Technologies, Inc.
    Inventors: Austin K. Russell, Matthew D. Weed, Liam J. McGregor, Jason M. Eichenholz
  • Patent number: 12061291
    Abstract: Embodiments of the disclosure provide a system for controlling laser pulses emitted by an optical sensing device. The system may include a laser emitter configured to emit a plurality of laser pulses, a power source configured to deliver electrical currents to the laser emitter, and a control circuit configured to deliver electrical currents from the power source to the laser emitter. The control circuit may include a first control path configured to deliver a first electrical current rising at a first rate from the power source to the laser emitter to emit a first laser pulse. The control circuit may also include a second control path configured to deliver a second electrical current rising at a second rate from the power source to the laser emitter to emit a second laser pulse following the first laser pulse. The second rate may be higher than the first rate.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: August 13, 2024
    Assignee: BEIJING VOYAGER TECHNOLOGY CO., LTD.
    Inventors: Yu-Ching Yeh, Yue Lu, Jihua Li, Youmin Wang
  • Patent number: 12050288
    Abstract: In accordance with some embodiments, a light detection and ranging (LiDAR) scanning system includes a light source. The light source is configured to transmit a pulse of light. The LiDAR scanning system also includes a beam steering apparatus configured to steer the pulse of light in at least one of vertically and horizontally along an optical path. The beam steering apparatus is further configured to concurrently collect scattered light generated based on the light pulse illuminating an object in the optical path. The scattered light is coaxial or substantially coaxial with the optical path. The LiDAR scanning system further includes a light converging apparatus configured to direct the collected scattered light to a focal point. The LiDAR scanning system further includes a light detector, which is situated substantially at the focal point. In some embodiments, the light detector can include an array of detectors or detector elements.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: July 30, 2024
    Assignee: Seyond, Inc.
    Inventors: Yimin Li, Junwei Bao
  • Patent number: 12050269
    Abstract: A dual lens assembly positioned along an optical receive path within a LiDAR system is provided. The dual lens assembly is constructed to reduce a numerical aperture of a returned light pulse and reduce a walk-off error associated with one or more mirrors of the LiDAR system.
    Type: Grant
    Filed: January 10, 2023
    Date of Patent: July 30, 2024
    Assignee: Seyond, Inc.
    Inventor: Jim Li
  • Patent number: 12033357
    Abstract: A method comprising receiving, from a first infrared image capture device, three images including gas equipment including a first image captured at a first time period, a second image captured at a second time period, and a third image captured at a third time period, the three images capturing an infrared spectrum, interpreting one of the three images in a red color channel of an RGB image where pixels are red-tonal in coloring, interpreting an other of the three images in a green color channel of the RGB image where pixels are green-tonal in coloring, interpreting a remaining of the three images in a blue color channel of the RGB image where pixels are blue-tonal in coloring, and providing the RGB image for display, the RGB image indicating movement as at least one color that is different from color of at least some of the gas equipment.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: July 9, 2024
    Assignee: Plainsight Technologies Inc.
    Inventors: Logan Spears, Carlos Anchia, Corey Staten, Wei Xu
  • Patent number: 12025743
    Abstract: In one embodiment, a lidar system includes a light source configured to emit pulses of light. The lidar system also includes a scanner configured to scan at least a portion of the emitted pulses of light along an interlaced scan pattern, including: (i) scanning the portion of the emitted pulses of light substantially parallel to a first scan axis to produce multiple scan lines of the interlaced scan pattern; and (ii) distributing the scan lines along a second scan axis in an interlaced manner, where the interlaced scan pattern is an n-fold interlaced scan pattern that includes n sub-scans, where: n is an integer greater than or equal to 2, each sub-scan includes two or more of the scan lines of the interlaced scan pattern, and the n sub-scans are scanned sequentially where a first sub-scan of the n sub-scans is scanned prior to a second sub-scan.
    Type: Grant
    Filed: August 12, 2022
    Date of Patent: July 2, 2024
    Assignee: Luminar Technologies, Inc.
    Inventor: Eric C. Danziger
  • Patent number: 12019183
    Abstract: A LiDAR sensing device may include: a sensing light source unit configured to radiate sensing light; a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source unit; a scanner unit configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target; a light receiving lens configured to pass the incident light reflected from the scanner unit, and integrated with the light transmitting reflector; a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and an optical detecting unit into which the incident light reflected from the light receiving reflector is incident.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: June 25, 2024
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Won Gyum Kim, Young Shin Kim, Kyung Rin Kim, Sung Eun Jo