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公开(公告)号：US20200292675A1
公开(公告)日：2020-09-17
申请号：US16563595
申请日：2019-09-06
发明人： Hiroshi KUBOTA , Nobu MATSUMOTO
IPC分类号： G01S7/486 , G01S7/487 , G01S17/10 , G01J1/44 , H01L31/107
摘要： According to one embodiment, a light detector includes: a first set of light detection elements and a second set of light detection elements each being disposed in a first region on a substrate; and a first selection and integration circuit and a second selection and integration circuit each being disposed in a second region outside of the first region on the substrate. The first selection and integration circuit is configured to select a first subset of light detection elements in the first set, and integrate outputs from the light detection elements in the first subset. The second selection and integration circuit is configured to select a second subset of light detection elements in the second set, and integrate outputs from the light detection elements in the second subset.
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公开(公告)号：US20200271787A1
公开(公告)日：2020-08-27
申请号：US16644118
申请日：2017-10-03
申请人： Intel Corporation
发明人： Ganmei You , Zhigang Wang , Dawei Wang , Hu Chen
IPC分类号： G01S17/89 , G01S17/931 , G01S7/487 , G01S7/4913
摘要： A technology is described for mapping a physical environment. An example method may include receiving laser point data for laser light reflected from the physical environment and detected by a laser sensor. Points included in the laser point data can be correlated to grid cells in an environment map that represents the physical environment. Error ranges for the points correlated to the grid cells can be determined based in part on an error distribution. Occupation probabilities can then be calculated for the grid cells in the environment map using an interpolation technique and grid cell occupation probabilities for adjacent error grid cells selected based in part on the error ranges of the points, and the grid cells in the environment map can be updated with the occupation probabilities.
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公开(公告)号：US10746849B2
公开(公告)日：2020-08-18
申请号：US15482674
申请日：2017-04-07
申请人： General Radar Corp.
发明人： Dmitry Turbiner , Jon Williams
IPC分类号： G01S7/32 , G01S17/26 , G01S7/285 , G01S15/931 , G01S13/42 , G01S7/487 , G01S7/486 , G01S13/931 , G01S13/00
摘要： Aspects of the invention provide improvements to electromagnetic and other wave-based ranging systems, e.g., RADAR or LIDAR systems, of the type having transmit logic that transmits a pulse based on an applied analog signal. The improvements are characterized, in part, by a SERDES having a serializer (a/k/a a “transmit side”) that is coupled to the transmit logic. The serializer has (i) an input to which a pattern on which the pulse is based is applied and (ii) an output from which a serialization of the pattern is applied to the transmit logic. The improvements are further characterized in that the SERDES has deserializer logic (a/k/a a “receive side”) that is coupled to receive logic and that deserialize a received “analog” signal containing possible reflections of the pulse. According to various aspects of the invention, the transmit and/or receive logic can include circuitry for directionally steering pulses transmitted into the environment and/or the directional sensitivity of the system to possible reflects of those pulses.
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公开(公告)号：US10690756B2
公开(公告)日：2020-06-23
申请号：US15484975
申请日：2017-04-11
发明人： Nirmal C. Warke , David P. Magee , Baher S. Haroun
摘要： Described examples include an integrated circuit that includes an encoder configured to modulate a driving signal for an optical transmitter with a plurality of encoded pulses corresponding to a code, in which the driving signal is transmitted to the optical transmitter periodically. The integrated circuit also includes a demodulator configured to receive a received signal from an optical receiver that is configured to receive a reflection of light transmitted by the optical transmitter off an object, the demodulator configured to discriminate the plurality of encoded pulses in the received signal and estimate a distance of the object.
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公开(公告)号：US10686412B2
公开(公告)日：2020-06-16
申请号：US15473533
申请日：2017-03-29
发明人： Joseph Adut
摘要： A high-speed low-noise trans-impedance amplifier (TIA) with fast overdrive recovery is suitable for use in light detection and ranging (LIDAR) receivers.
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公开(公告)号：US20200166612A1
公开(公告)日：2020-05-28
申请号：US16694386
申请日：2019-11-25
摘要： A method can be used for controlling pixel scanning within a range detector. A spatially controllable point light source generates a first series of light source pulses associated with a first spatial direction. The first series of light source pulses are generated during a first time period. The spatially controllable point light source generates a second series of light source pulses associated with a second spatial direction. The second series of light source pulses are generated during a second time period that overlaps with the first time period so that the second series of light source pulses are started during the first series of light source pulses.
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公开(公告)号：US20200150236A1
公开(公告)日：2020-05-14
申请号：US16627120
申请日：2018-06-25
申请人： PIONEER CORPORATION
发明人： Yukio HAYASHI , Yoshinori ABE
IPC分类号： G01S7/489 , G01S7/487 , G01S7/4865 , G01S17/89 , G01R19/00
摘要： A lidar 1 is provided with an APD 41 and a DSP 16. The APD 41 receives a return light Lr that is an outgoing light Lo radiated by a scanner 55 and thereafter reflected by an object. The DSP 16 includes a shot noise estimation unit 77 and a voltage control unit 78. The shot noise estimation unit 77 estimates, on the basis of the output signal from the APD 41, information associated with background light amount that is the sun light reflected by the object and thereafter received by the APD 41. The voltage control unit 78 determines, on the basis of the information associated with the estimated background light amount, the voltage to be applied to the APD 41 in order to control the gain M of the APD 41.
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公开(公告)号：US10648795B2
公开(公告)日：2020-05-12
申请号：US15700346
申请日：2017-09-11
申请人： FUJITSU LIMITED
发明人： Satoru Ushijima
摘要： A distance measuring apparatus measures a distance to a target based on reflected light in response to launched laser beam. A distance measuring process includes generating a difference binary image from first and second range images that are respectively generated in states without and with the target in front of a background and represent distances to each of range measurement points, extracting a first region greater than a first threshold from a non-background region of the difference binary image made up of non-background points, grouping adjacent points on the second range image into groups of adjacent points having close distance values, for each point within the first region, to extract second regions corresponding to the groups, and extracting a third region smaller than a second threshold from the second regions, to judge that each point within the third region is edge noise.
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99.发明申请公开(公告)号：US20200096621A1
公开(公告)日：2020-03-26
申请号：US16137484
申请日：2018-09-20
发明人： Jonathan Geske , Andrew Hood
摘要： A modulated light receiver includes a photo-sensitive element, an electromagnetic interference (EMI) detection circuit, and a decision-making controller. The photo-sensitive element is configured to generate an electrical signal in response to modulated light. The electromagnetic interference (EMI) detection circuit is configured to generate an electrical signal in response to EMI. The decision-making controller is electrically coupled to the photo-sensitive element and the EMI detection circuit, wherein the decision-making controller generates an output based on the inputs received from the photo-sensitive element and the EMI detection circuit.
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公开(公告)号：US20200088843A1
公开(公告)日：2020-03-19
申请号：US16129804
申请日：2018-09-13
申请人： PixArt Imaging Inc.
发明人： Tso-Sheng TSAI
摘要： There is provided an object 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.
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