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1. 发明公开

US20240385298A1 NOISE REMOVAL APPARATUS, OBJECT DETECTION APPARATUS, AND NOISE REMOVAL METHOD 审中-公开
公开(公告)号：US20240385298A1
公开(公告)日：2024-11-21
申请号：US18787242
申请日：2024-07-29
申请人： DENSO CORPORATION
发明人： Keiko AKIYAMA
IPC分类号： G01S7/487 , G01S7/48 , G01S7/497 , G01S17/42 , G01S17/931
CPC分类号： G01S7/4876 , G01S7/4802 , G01S7/497 , G01S17/42 , G01S17/931
摘要： A noise removal apparatus removes noise generated when a detection target is recognized using reflection of light. The noise removal apparatus includes a measurement unit, a determination unit, and a removal unit. The measurement unit measures an intensity of arrival light, which arrives in a direction corresponding to an emission direction of light emitted toward a predetermined range, in an elapsed time from emission of the light. The determination unit determines, when an echo having an intensity equal to or larger than a predetermined intensity arises in the measured arrival light, whether the echo is reflected by the detection target located in the predetermined range, using the intensity of the echo and a detection distance corresponding to the elapsed time. The removal unit removes, as noise, the echo determined not to be reflected by the detection target.

2. 发明公开

US20240385297A1 AVALANCHE DIODE BASED DETECTION DEVICE FOR CALCULATING TIME-OF-FLIGHT 审中-公开
公开(公告)号：US20240385297A1
公开(公告)日：2024-11-21
申请号：US18787398
申请日：2024-07-29
申请人： PixArt Imaging Inc.
发明人： TSO-SHENG TSAI
IPC分类号： G01S7/487 , G01S7/4865 , G01S17/04
CPC分类号： G01S7/487 , G01S7/4865 , G01S17/04
摘要： There is provided a detection device including a light source, an avalanche diode, a first counter, a second counter and a processor. The light source emits light within a first interval, and is turned off within a second interval, a third interval and a fourth interval. The avalanche diode detects photons corresponding to the first interval, second, third and fourth intervals to trigger avalanche events. The first counter performs up-counting on the avalanche events in the first interval and performs down-counting on the avalanche events in the third interval to generate a first count value. The second counter performs up-counting on the avalanche events in the second interval and performs down-counting on the avalanche events in the fourth interval to generate a second count value. The processor calculates a time-of-flight according to the first count value and the second count value.

3. 发明授权

US12105188B2 Radar power control method and apparatus 有权
公开(公告)号：US12105188B2
公开(公告)日：2024-10-01
申请号：US17484462
申请日：2021-09-24
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Pengfei Luo , Tong Jiang
IPC分类号： G01S13/86 , G01S7/292 , G01S7/40 , G01S7/487 , G01S13/931 , G01S17/931
CPC分类号： G01S13/865 , G01S7/292 , G01S7/40 , G01S7/487 , G01S13/931 , G01S17/931
摘要： A radar power control method and an apparatus are provided. The method includes: emitting a first detection signal at a target emission angle; obtaining a reflectivity of a first detection point of the first detection signal if signal power of an echo signal of the first detection signal is less than a preset power threshold, where the first detection point is a point on a surface of a detected object in a direction of the target emission angle; and increasing emission power corresponding to the target emission angle if the reflectivity of the first detection point is greater than a preset first threshold. The solution helps consider both power consumption and a detection distance of a radar.

4. 发明公开

US20240264313A1 LIDAR SYSTEM WITH VARIABLE RESOLUTION MULTI-BEAM SCANNING 审中-公开
公开(公告)号：US20240264313A1
公开(公告)日：2024-08-08
申请号：US18624247
申请日：2024-04-02
申请人： INNOVIZ TECHNOLOGIES LTD.
发明人： Ronen ESHEL , Nir GOREN
IPC分类号： G01S17/931 , G01S7/481 , G01S7/4865 , G01S7/487 , G01S17/42 , G01S17/894
CPC分类号： G01S17/931 , G01S7/4812 , G01S7/4814 , G01S7/4815 , G01S7/4817 , G01S7/4865 , G01S7/4873 , G01S17/42 , G01S17/894
摘要： A LIDAR system may include a laser emission unit configured to generate a plurality of laser beams. The LIDAR system may also include an optical system configured to transmit the plurality of laser beams from the laser emission unit to a scanning unit. The scanning unit may be configured to project the plurality of laser beams toward a field of view of the LIDAR system to simultaneously scan the field of view along a plurality of scan lines traversing the field of view.

5. 发明公开

US20240255629A1 LIGHT COVER STAIN DETECTION METHOD FOR LIDAR AND LIGHT COVER STAIN DETECTION SYSTEM FOR LIDAR 审中-公开
公开(公告)号：US20240255629A1
公开(公告)日：2024-08-01
申请号：US18607992
申请日：2024-03-18
申请人： HESAI TECHNOLOGY CO., LTD.
发明人： Qingguo YU , Lei WANG , Xin ZHAO , Shaoqing XIANG
IPC分类号： G01S7/497 , G01S7/487
CPC分类号： G01S7/497 , G01S7/4873 , G01S2007/4975
摘要： Systems, devices, and methods for light cover stain detection for LiDARs are provided. In one aspect, a method for stain detection on a light cover of a LiDAR includes: transmitting a laser pulse to the light cover of the LiDAR, receiving a stray light pulse generated by the laser pulse incident on the light cover of the LiDAR, and determining, based on a characteristic of the stray light pulse, whether a stain is on the light cover of the LiDAR.

6. 发明公开

US20240248182A1 METHOD OF DETECTING AND CORRECTING MULTI-PATH INTERFERENCE COMPONENT IN TOF CAMERA 审中-公开
公开(公告)号：US20240248182A1
公开(公告)日：2024-07-25
申请号：US18532875
申请日：2023-12-07
申请人： SK hynix Inc. , KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
发明人： Min Hyuk KIM , Daniel S. Jeon
IPC分类号： G01S7/487 , G01S7/4865 , G01S17/894
CPC分类号： G01S7/487 , G01S7/4866 , G01S17/894
摘要： Detecting a multi-path interference component in a time-of-flight (ToF) camera may be performed by generating a confidence map in which a distortion area attributable to a multi-path interference component included in a reflection modulation signals is specified, where the reflection modulation signals is generated when two modulation signals emitted from a light source to a subject return to the ToF camera after being reflected by the subject. Correcting the multi-path interference component corrects distortion attributable to a multi-path interference component, which may include correcting only the distortion area specified in the confidence map. Detecting the multi-path interference component in a ToF camera includes collecting the reflection modulation signal at a plurality of different times, calculating amplitudes and offsets of the collected reflection modulation signals, determining whether a multi-path interference component is included in the reflection modulation signal, and generating the confidence map.

7. 发明公开

US20240230858A1 SIGNAL PROCESSING METHOD, SIGNAL TRANSMISSION METHOD, AND APPARATUS 审中-公开
公开(公告)号：US20240230858A1
公开(公告)日：2024-07-11
申请号：US18612751
申请日：2024-03-21
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Zhiwei Dai , Shuai Wang , Anliang Yu , Guoliang Cao , Wei Wang
IPC分类号： G01S7/4863 , G01S7/48 , G01S7/487 , G01S17/894 , G06T5/50 , G06T5/70 , G06T7/60
CPC分类号： G01S7/4863 , G01S7/4802 , G01S7/4876 , G01S17/894 , G06T5/50 , G06T5/70 , G06T7/60 , G06T2207/10028
摘要： Embodiments of this application provide a signal processing method, a signal transmission method, and an apparatus, which relate to detection technologies, are applied to the field of sensor technologies, and may be applied to intelligent driving, intelligent transportation, surveying and mapping, and intelligent manufacturing. In embodiments of this application, a processing apparatus obtains an echo signal of a detector to obtain a detection result. The detection result may include an image of a detection region and point cloud data of the detection region, or the detection result may be obtained with reference to an image of a detection region and point cloud data of the detection region.

8. 发明授权

US12025748B2 Signal processing apparatus, distance measuring apparatus, and distance measuring method 有权
公开(公告)号：US12025748B2
公开(公告)日：2024-07-02
申请号：US16288337
申请日：2019-02-28
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Takashi Ida , Kenzo Isogawa , Atsushi Matsumura
IPC分类号： G01S7/487 , G01S17/10 , G01S17/89 , G06T5/70
CPC分类号： G01S7/4876 , G01S17/10 , G01S17/89 , G06T5/70 , G06T2207/10028 , G06T2207/20081 , G06T2207/20084
摘要： According to one embodiment, a signal processing apparatus includes a memory and a processing circuit. The memory stores a learned model for generating restoration data by restoring deterioration of a signal based on data of the signal and data related to a position of a sample of the signal. The processing circuit inputs data of the signal and data related to the position to the learned model. The processing circuit generates the restoration data by using the learned model.

9. 发明授权

US12025700B2 System and method for determining ranges to a target behind a transparent surface 有权
公开(公告)号：US12025700B2
公开(公告)日：2024-07-02
申请号：US17007049
申请日：2020-08-31
申请人： Aeva, Inc.
发明人： Humayun Chaudhry , Christopher Thompson
IPC分类号： G01C3/08 , G01S7/487 , G01S17/08
CPC分类号： G01S17/08 , G01S7/487
摘要： Systems and methods for determining ranges to a target disposed behind a transparent surface are described. A target acquisition system receives a plurality of lidar returns, at least some of which are from a target and at least some of which are from a transparent surface. The lidar returns correspond to a portion of a lidar signal generated by a lidar, directed toward the target, and reflected back to the lidar from either the target or the transparent surface. A range measurement for each of the plurality of lidar returns is determined. The target acquisition system generates a histogram of the range measurements. The histogram includes an array including a plurality of range bins. Each range bin defines a unique portion of a predetermined distance out from the lidar. The histogram further includes a count associated with each respective range bin. The count corresponds to a number of range measurements falling within the unique portion of the predetermined distance corresponding to that respective range bin. In some implementations of the invention, the target acquisition system determines which of the range measurements correspond to the target based on the histogram. In some implementations of the invention, the target acquisition system determines which of the range measurements correspond to the transparent surface based on the histogram.

10. 发明授权

US12019191B2 Method for identifying a change of a range of a lidar sensor 有权
公开(公告)号：US12019191B2
公开(公告)日：2024-06-25
申请号：US18034962
申请日：2021-07-28
申请人： MERCEDES-BENZ GROUP AG
发明人： Philipp Schindler , Andreas Scharf
IPC分类号： G01C3/08 , G01S7/487 , G01S7/497 , G01S17/931
CPC分类号： G01S7/487 , G01S7/497 , G01S17/931
摘要： A method for identifying a change of a range of a lidar sensor involves a lidar sensor receiving a reference noise level of infrared radiation. A signal-to-noise ratio of infrared radiation reflected on the reference target and received by the lidar sensor are identified in a reference measurement having a reference target located at a predetermined distance to the lidar sensor. In a driving operation measurement, a current noise level of received infrared radiation is identified and a theoretical distance to a position where the reference target ought to be if, at the current noise level, the same signal-to-noise ratio applies as in the reference measurement is identified from the current noise level. A change in range calculation identifies a difference between the predetermined distance and the theoretical distance. The difference corresponds to the change of the range of the lidar sensor compared to its range during the reference measurement.

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