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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US10551486B2
Method for measuring a time of flight
Publication/Patent Number: US10551486B2 Publication Date: 2020-02-04 Application Number: 15/815,362 Filing Date: 2017-11-16 Inventor: Mellot, Pascal   Assignee: STMICROELECTRONICS (GRENOBLE 2) SAS   IPC: G01S7/486 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. 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 ...More ...Less
2 US10591299B2
Information processing device, information processing method, and program
Publication/Patent Number: US10591299B2 Publication Date: 2020-03-17 Application Number: 16/101,527 Filing Date: 2018-08-13 Inventor: Masuda, Tomonori   Assignee: FUJIFILM CORPORATION   IPC: G01S7/4865 Abstract: An information processing device includes an acquisition unit that acquires measurement success/failure information indicating whether or not measurement of a measurement unit has been successful, in a case where the measurement unit measures a distance to a subject by emitting directional light, which is light having directivity, toward the subject within a designated imaging range and receiving reflected light of the directional light, and an execution unit that causes the measurement unit to remeasure the distance to the subject in a state where a position of the designated imaging range has been changed within an allowable range in which the panoramic imaging is executable, in a case where the measurement success/failure information acquired by the acquisition unit indicates that the measurement of the measurement unit has not been successful. An information processing device includes an acquisition unit that acquires measurement success/failure information indicating whether or not measurement of a measurement unit has been successful, in a case where the measurement unit measures a distance to a subject by emitting ...More ...Less
3 US10578741B2
Distance detection device and distance detection method
Publication/Patent Number: US10578741B2 Publication Date: 2020-03-03 Application Number: 15/518,807 Filing Date: 2015-10-29 Inventor: Matsuo, Tomohiro   Kouno, Yoshinobu   Tabuchi, Shin   Assignee: Panasonic Intellectual Property Management Co., Ltd.   IPC: G01S17/89 Abstract: A distance detection device generates a distance image indicating a distance to an object positioned within a distance range targeted for measurement using a TOF system. The distance detection device includes a light source that illuminates the object with light, a light sensor that generates a detection signal by receiving a reflection light which is the illumination light reflected from the object, a controller that controls an exposure timing of the light sensor with respect to an illumination timing of the light from the light source in each of measurement ranges of a plurality of measurement ranges obtained by dividing the distance range, and a processor. The processor generates distance information by calculating distances to objects within the measurement ranges based on the detection signal in each of the measurement ranges, and generates the distance image indicating the distance to the object within the distance range targeted for measurement using the generated plural distance information items. A distance detection device generates a distance image indicating a distance to an object positioned within a distance range targeted for measurement using a TOF system. The distance detection device includes a light source that illuminates the object with light, a light sensor ...More ...Less
4 US10557925B2
Time-of-flight (TOF) image sensor using amplitude modulation for range measurement
Publication/Patent Number: US10557925B2 Publication Date: 2020-02-11 Application Number: 15/340,972 Filing Date: 2016-11-01 Inventor: Wang, Yibing Michelle   Lee, Tae-yon   Ovsiannikov, Ilia   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: G01C3/08 Abstract: The Time-of-Flight (TOF) technique is combined with analog amplitude modulation within each pixel in an image sensor. The pixel may be a two-tap pixel or a one-tap pixel. Two photoelectron receiver circuits in the pixel receive respective analog modulating signals. The distribution of the received photoelectron charge between these two circuits is controlled by the difference (or ratio) of the two analog modulating voltages. The differential signals generated in this manner within the pixel are modulated in time domain for TOF measurement. Thus, the TOF information is added to the received light signal by the analog domain-based single-ended to differential converter inside the pixel itself. The TOF-based measurement of range and its resolution are controllable by changing the duration of modulation. An autonomous navigation system with these features may provide improved vision for drivers under difficult driving conditions like low light, fog, bad weather, or strong ambient light. The Time-of-Flight (TOF) technique is combined with analog amplitude modulation within each pixel in an image sensor. The pixel may be a two-tap pixel or a one-tap pixel. Two photoelectron receiver circuits in the pixel receive respective analog modulating signals. The ...More ...Less
5 US10616510B2
Methods and apparatus for superpixel modulation
Publication/Patent Number: US10616510B2 Publication Date: 2020-04-07 Application Number: 16/417,543 Filing Date: 2019-05-20 Inventor: Kovacovsky, Tomas   Maly, Michal   Zizka, Jan   Assignee: Photoneo s. r. o.   IPC: G01S17/89 Abstract: In illustrative implementations, a set of separate modulation signals simultaneously modulates a plurality of pixels in a superpixel by a set of separate modulation signals, such that each pixel in the superpixel is modulated by a modulation signal that causes sensitivity of the pixel to vary over time. Each superpixel comprises multiple pixels. In some implementations, the sensitivity of a pixel to incident light is controlled by storage modulation or by light modulation. In some implementations, this invention is used for 3D scanning, i.e., for detection of the 3D position of points in a scene. In illustrative implementations, a set of separate modulation signals simultaneously modulates a plurality of pixels in a superpixel by a set of separate modulation signals, such that each pixel in the superpixel is modulated by a modulation signal that causes sensitivity of the ...More ...Less
6 US10612972B2
Light receiver and method for reading out avalanche photodiodes in Geiger mode
Publication/Patent Number: US10612972B2 Publication Date: 2020-04-07 Application Number: 15/846,296 Filing Date: 2017-12-19 Inventor: Clemens, Klaus   Hug, Gottfried   Seitz, Stefan   Assignee: SICK AG   IPC: G01J1/44 Abstract: A light receiver (100), comprising: a plurality of avalanche photodiode elements (10) each being biased with a bias voltage above a breakdown voltage and thus operated in a Geiger mode in order to trigger a Geiger current upon light reception and a plurality of readout circuits (42, 44, 46) associated with individual avalanche photodiode elements (10) or a group of avalanche photodiode elements (10) for reading out a Geiger current generated upon light reception, wherein the readout circuits (42, 44, 46) each comprise a measurement path (42) and a blanking path (46) as well as a switching element (44) for selectively supplying the Geiger current, or a measurement current corresponding to the Geiger current, to the measurement path (42) or the blanking path (46). A light receiver (100), comprising: a plurality of avalanche photodiode elements (10) each being biased with a bias voltage above a breakdown voltage and thus operated in a Geiger mode in order to trigger a Geiger current upon light reception and a plurality of readout ...More ...Less
7 US10641872B2
Ladar receiver with advanced optics
Publication/Patent Number: US10641872B2 Publication Date: 2020-05-05 Application Number: 15/430,200 Filing Date: 2017-02-10 Inventor: Dussan, Luis Carlos   Steinhardt, Allan   Cook, David   Assignee: AEYE, INC.   IPC: G01S7/481 Abstract: Disclosed herein are various embodiment of an adaptive ladar receiver and associated method whereby the active pixels in a photodetector array used for reception of ladar pulse returns can be adaptively controlled based at least in part on where the ladar pulses were targeted. Additional embodiments disclose improved imaging optics for use by the receiver and further adaptive control techniques for selecting which pixels of the photodetector array are used for sensing incident light. Disclosed herein are various embodiment of an adaptive ladar receiver and associated method whereby the active pixels in a photodetector array used for reception of ladar pulse returns can be adaptively controlled based at least in part on where the ladar pulses were targeted ...More ...Less
8 US10627494B2
Interference handling in time-of-flight depth sensing
Publication/Patent Number: US10627494B2 Publication Date: 2020-04-21 Application Number: 15/705,095 Filing Date: 2017-09-14 Inventor: Demirtas, Sefa   Yu, Tao   Yellepeddi, Atulya   Le, Dortz Nicolas   Assignee: Analog Devices, Inc.   IPC: G01S7/486 Abstract: Aspects of the embodiments are directed to methods and imaging systems. The imaging systems can be configured to sense, by an light sensor of the imaging system, light received during a time period, process the light received by the light sensor, identify an available measurement period for the imaging system within the time period based on the processed light, and transmit and receive light during a corresponding measurement period in one or more subsequent time periods. Aspects of the embodiments are directed to methods and imaging systems. The imaging systems can be configured to sense, by an light sensor of the imaging system, light received during a time period, process the light received by the light sensor, identify an available ...More ...Less
9 EP3652556A1
AGGREGATING NON-IMAGING SPAD ARCHITECTURE FOR FULL DIGITAL MONOLITHIC, FRAME AVERAGING RECEIVERS
Publication/Patent Number: EP3652556A1 Publication Date: 2020-05-20 Application Number: 18844650.4 Filing Date: 2018-08-02 Inventor: Onal, Caner   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S7/486
10 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
11 EP2803184B1
METHOD OF OPERATING A TIME-OF-FLIGHT PIXEL
Publication/Patent Number: EP2803184B1 Publication Date: 2020-02-12 Application Number: 12864741.9 Filing Date: 2012-12-28 Inventor: Bikumandla, Manoj   Saladi, Sasidhar   Assignee: OmniVision Technologies, Inc.   IPC: H04N5/341
12 EP3614174A1
DISTANCE MEASURING DEVICE AND DISTANCE MEASURING METHOD
Publication/Patent Number: EP3614174A1 Publication Date: 2020-02-26 Application Number: 18425071.0 Filing Date: 2018-08-21 Inventor: Matsui, Yuki   Nakamuro, Ken   Zappa, Franco   Villa, Federica   Lussana, Rudi   Assignee: OMRON CORPORATION   Politecnico di Milano   IPC: G01S17/89 Abstract: A distance measuring device includes a light emission portion configured to emit light; a light receiving portion configured to receive measurement light that is emitted by the light emission portion and reflected by a measurement object, the light receiving portion comprising a plurality of pixels, each pixel having at least one light receiving portion and being configured to output a light reception signal that depends on the measurement light incident on the pixel; a discrimination portion configured to discriminate whether the pixel receives measurement light; a pixel output control portion configured to selectively output the light reception signal of each pixel individually, depending on the determination result of the discrimination portion; and an evaluation portion configured to receive the light reception signals output by the pixel output control portion and to output a distance signal that is indicative of a distance between the measuring device and the measurement object based on these light reception signals. A distance measuring device includes a light emission portion configured to emit light; a light receiving portion configured to receive measurement light that is emitted by the light emission portion and reflected by a measurement object, the light receiving portion comprising a ...More ...Less
13 EP3627178A1
SENSOR DEVICE, SENSOR MODULE, IMAGING SYSTEM AND METHOD TO OPERATE A SENSOR DEVICE
Publication/Patent Number: EP3627178A1 Publication Date: 2020-03-25 Application Number: 18195544.4 Filing Date: 2018-09-19 Inventor: