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公开(公告)号：US20210143919A1
公开(公告)日：2021-05-13
申请号：US15930834
申请日：2020-05-13
发明人： Jong-Sok KIM , Byung Kwan KIM , Sungdo CHOI
IPC分类号： H04B17/21 , H04B17/318 , H04B7/08 , H04W16/28 , H04W52/24 , H04W68/00 , H01Q3/24 , H01Q1/24 , H01Q21/28
摘要： Disclosed are obstacle detecting methods and apparatuses, the method of detecting an obstacle near a device includes, determining whether to detect an obstacle, detecting the obstacle using communication modules, in response to determining to detect the obstacle, determining whether a result of detecting the obstacle meets a threshold, detecting the obstacle using antennas of a communication module corresponding to a direction of the obstacle from among the communication modules, in response to the result of determining the obstacle meeting the threshold, and outputting a warning signal based on the result of detecting the obstacle using the communication modules or a result of detecting the obstacle using the antennas.
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公开(公告)号：US20240361768A1
公开(公告)日：2024-10-31
申请号：US18765723
申请日：2024-07-08
发明人： Hyunwoong CHO , Woosuk KIM , Jong-Sok KIM
CPC分类号： G05D1/0257 , B60W10/04 , B60W10/20 , B60W2420/408 , B60W2710/20 , B60W2720/10 , B60W2720/106 , B60W2720/12 , B60W2720/125
摘要： A processor-implemented method of performing an operation using a complex-valued attention network includes: extracting a complex-valued attention weight from complex-valued input data; and determining complex-valued attention data by applying the extracted complex-valued attention weight to the complex-valued input data.
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公开(公告)号：US20210181305A1
公开(公告)日：2021-06-17
申请号：US16924544
申请日：2020-07-09
发明人： Seungju HAN , Byung Kwan KIM , Jong-Sok KIM , Sungdo CHOI
摘要： Disclosed is a liveness test method and liveness test apparatus. The liveness test method includes determining a presence of a subject using a radar sensor, performing a first liveness test on the subject based on radar data obtained by the radar sensor, in response to the subject being present, acquiring image data of the subject using an image sensor, in response to a result of the first liveness test satisfying a first condition, and performing a second liveness test on the subject based on the image data.
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公开(公告)号：US20240125925A1
公开(公告)日：2024-04-18
申请号：US18321351
申请日：2023-05-22
发明人： Sungdo CHOI , Seung Tae KHANG , Jong-Sok KIM , Jinyong JEON , Young Rae CHO
IPC分类号： G01S13/931 , G01S7/35 , G01S13/42 , G01S13/58
CPC分类号： G01S13/931 , G01S7/356 , G01S13/42 , G01S13/584
摘要： A method of predicting a movement of a cut-in object, including separating a Doppler velocity corresponding to at least one wheel of the cut-in object from radar data based on a velocity of the cut-in object, determining a position of the at least one wheel of the cut-in object based on the Doppler velocity, generating at least one of first movement information related to a horizontal movement of the cut-in object or second movement information related to a moving direction of the cut-in object based on the position of the at least one wheel, and determining a position of the cut-in object based on at least one of the first movement information or the second movement information.
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公开(公告)号：US20220155411A1
公开(公告)日：2022-05-19
申请号：US17331074
申请日：2021-05-26
发明人： Sungdo CHOI , Jong-Sok KIM , Young Rae CHO
IPC分类号： G01S7/35 , G01S13/58 , G01S13/931 , G01S13/536
摘要： A radar signal processing method includes: extracting a first chirp sequence signal of a first carrier frequency and a second chirp sequence signal of a second carrier frequency from a radar signal received through an array antenna in a radar sensor; generating a first range-Doppler map by performing frequency conversion on the first chirp sequence signal; detecting a first target cell corresponding to a first target in the first range-Doppler map; determining a first ambiguous Doppler velocity of the first target based on first frequency information of the first target cell; determining a first range of an unambiguously measurable Doppler velocity through the first chirp sequence signal; estimating second ambiguous Doppler velocities based on the first ambiguous Doppler velocity and the first range; and determining a Doppler velocity of the first target by performing partial frequency conversion on the second chirp sequence signal based on the second ambiguous Doppler velocities.
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公开(公告)号：US20210086754A1
公开(公告)日：2021-03-25
申请号：US16990206
申请日：2020-08-11
发明人： Jong-Sok KIM , Byung Kwan KIM , Woosuk KIM , Min Sung EO , Hyunwoong CHO , Sungdo CHOI
摘要： A control apparatus includes a Wi-Fi communication module, a processor, a controller that controls a component of a vehicle, and a memory, wherein the memory stores at least one piece of position information corresponding to a position in the vehicle, and at least one registered pattern of a gesture, face, or shape, the Wi-Fi communication module transmits a transmission signal to the position corresponding to the at least one piece of position information by a Wi-Fi communication method at a preset frequency and receives a reflection signal reflected from an object in response to the transmission signal, the processor acquires an input pattern of a gesture, face, or shape of the object by analyzing the reflection signal, and retrieves a registered pattern matching the input pattern from the at least one registered pattern, and the controller controls the component according to an instruction corresponding to the retrieved registered pattern.
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公开(公告)号：US20240192350A1
公开(公告)日：2024-06-13
申请号：US18329814
申请日：2023-06-06
发明人： Seung Tae KHANG , Jinyong JEON , Sungdo CHOI , Jong-Sok KIM , Young Rae CHO
CPC分类号： G01S13/46 , G01S7/032 , G01S7/295 , G01S7/4008 , G01C9/00 , G01S2013/468
摘要： A processor implement method may include determining a target azimuth angle of the target object based on an initial radar signal received through an array antenna of a radar sensor, generating a correction radar signal by correcting a phase of the initial radar signal based on the target azimuth angle, and determining an elevation angle of the target object based on the correction radar signal.
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公开(公告)号：US20240142575A1
公开(公告)日：2024-05-02
申请号：US18297767
申请日：2023-04-10
发明人： Sungdo CHOI , Jong-Sok KIM , Seung Tae KHANG , Jinyong JEON , Young Rae CHO
CPC分类号： G01S7/417 , G01S7/356 , G01S7/412 , G01S13/584 , G01S13/723 , G01S13/89
摘要： A method including clustering second point clouds comprised in second point cloud data of a second timepoint, obtaining output data corresponding to one or more second clusters generated as a result of the clustering by applying the second point clouds to a pretrained neural network, determining whether at least one of the one or more second clusters is a target object based on a reliability factor, tracking first clusters corresponding to the target object in first point cloud data of one or more first timepoints prior to the second timepoint, and training of the pretrained neural network based on the output data corresponding to the first clusters and the first point clouds for each first cluster determined according to a result of the tracking.
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公开(公告)号：US20230401823A1
公开(公告)日：2023-12-14
申请号：US18456713
申请日：2023-08-28
发明人： Seungju HAN , Byung Kwan KIM , Jong-Sok KIM , Sungdo CHOI
IPC分类号： G06V10/764 , G01S7/02 , G01S7/41 , G01S13/04 , G01S13/86 , G06V40/16 , G06V10/82 , G06V40/40
CPC分类号： G06V10/764 , G01S7/024 , G01S7/412 , G01S13/04 , G01S13/867 , G06V40/166 , G06V40/168 , G06V10/82 , G06V40/161 , G06V40/40
摘要： Disclosed is a liveness test method and liveness test apparatus. The liveness test method includes determining a presence of a subject using a radar sensor, performing a first liveness test on the subject based on radar data obtained by the radar sensor, in response to the subject being present, acquiring image data of the subject using an image sensor, in response to a result of the first liveness test satisfying a first condition, and performing a second liveness test on the subject based on the image data.
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公开(公告)号：US20230280461A1
公开(公告)日：2023-09-07
申请号：US17948373
申请日：2022-09-20
申请人： Samsung Electronics Co., Ltd. , The Industry & Academic Cooperation in Chungnam National University (IAC)
发明人： Jong-Sok KIM , Byungkwan KIM , Sungdo CHOI
IPC分类号： G01S13/931 , G01S13/89
CPC分类号： G01S13/931 , G01S13/89
摘要： An operating method of a radar sensor includes: performing object classification on a detected target; comparing a confidence score of a result of the object classification with a threshold value; determining whether high-resolution information on the detected target is to be generated based on a result of the comparison; in response to a determination that the high-resolution information is to be generated, selecting one or more of a plurality of analog-to-digital converters (ADCs) of the radar sensor, and determining control information for changing a setting of the selected one or more ADCs; changing the setting of the selected one or more ADCs based on the determined control information; generating first intermediate frequency signals based on respective first reception signals and a frequency modulated signal, the first reception signals being signals received through reception antennas after a first transmission signal output by the radar sensor is reflected by the detected target, and the first transmission signal being generated based on the frequency modulated signal; generating first radar data by processing a portion of the generated first intermediate frequency signals through the selected one or more ADCs; generating second radar data by processing remaining signals among the generated first intermediate frequency signals through remaining ADCs of the plurality of ADCs; generating the high-resolution information on the detected target based on the generated first radar data; and generating high-resolution information on a predetermined range based on the generated second radar data
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