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公开(公告)号：US20230137710A1
公开(公告)日：2023-05-04
申请号：US17979536
申请日：2022-11-02
发明人： Ankur TRISAL , Vijay Narayan TIWARI
摘要： Methods and apparatuses for managing objects are provided. A method performed by an electronic device includes monitoring, using an ultra-wide band (UWB) sensor of the electronic device, at least one object over a time period; based on the monitoring of the at least one object, extracting a variation in at least one of a material property parameter of the at least one object and a motion parameter of the at least one object; generating a pattern based on the variation in the at least one of the material property parameter and the motion parameter; and identifying, based on the generated pattern, an anomaly of the at least one object.
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公开(公告)号：US11592909B2
公开(公告)日：2023-02-28
申请号：US17506605
申请日：2021-10-20
申请人： Google LLC
发明人： Ivan Poupyrev , Patrick M. Amihood
IPC分类号： G06F3/01 , G06F21/32 , G06F3/0481 , G06F16/245 , G06F21/62 , G01S7/41 , G01S13/56 , G01S13/86 , H04Q9/00 , G06K9/62 , G01S13/88 , G06F3/04815 , G01S7/40 , H04W4/80 , G06N20/00 , H04W16/28 , G01S13/90 , G06V20/64 , G06V40/20 , A63F13/21 , A63F13/24 , G01S13/66 , G08C17/02 , G06T7/73 , G01S13/931 , G06F1/16 , G06F3/0484 , G01S19/42 , G06F3/0346 , G06F3/16
摘要： This document describes techniques for fine-motion virtual-reality or augmented-reality control using radar. These techniques enable small motions and displacements to be tracked, even in the millimeter or sub-millimeter scale, for user control actions even when those actions are small, fast, or obscured due to darkness or varying light. Further, these techniques enable fine resolution and real-time control, unlike conventional RF-tracking or optical-tracking techniques.
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公开(公告)号：US20230057975A1
公开(公告)日：2023-02-23
申请号：US17751933
申请日：2022-05-24
发明人： Roy Law , Jianen Wu , Ziqin Chen
摘要： A vehicle mounted liveness detection system, liveness detection method, apparatus, computer device and storage medium are disclosed. The system includes a Doppler microwave sensor, a camera and an alarm controller. The Doppler microwave sensor is configured to perform a liveness search on an in-vehicle space, obtain a liveness search data, and transmit the liveness search data to the alarm controller. The camera is configured to capture an in-vehicle image of the in-vehicle space and transmit the in-vehicle image to the alarm controller. The alarm controller is configured to perform a liveness detection on the liveness search data, perform a liveness detection on the in-vehicle image and perform an in-vehicle liveness alarm operation when a presence of liveness in the in-vehicle space is detected based on at least one of the liveness search data and the in-vehicle image.
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公开(公告)号：US11585913B2
公开(公告)日：2023-02-21
申请号：US16295110
申请日：2019-03-07
发明人： Kin Keung Lee , Edward James Jackson , Ka Lun Fan
摘要： An ultra-wideband-based system and method for detecting properties associated with a movable object in an environment such as an indoor environment. The method includes transmitting ultra-wideband radar signals to an environment, using an ultra-wideband transmitter, and receiving signals reflected from the environment as a result of the transmission of the first ultra-wideband radar signals using an ultra-wideband receiver. The method also includes processing the reflected signals and determining properties associated with a movable object in an environment based on the processed reflected signals, using the processor.
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公开(公告)号：US20230045562A1
公开(公告)日：2023-02-09
申请号：US17906561
申请日：2021-03-11
申请人： DATA SOLUTIONS, INC.
发明人： Tomoaki OTSUKI , Chen YE
摘要： An object is to accurately determine the presence or absence of a living body. A living body detection device comprises: a signal acquirer that acquires a first signal including a first frequency component that is a frequency component of heartbeat and a second frequency component that is a frequency component of breathing; a filter that attenuates a frequency component higher than the first frequency component based on the first signal to generate a second signal; a frequency analyzer that analyzes a frequency component of the second signal; a variance value calculator that calculates a first variance value of energy of at least one of the first frequency component and the second frequency component based on a result of analysis by the frequency analyzer; a first statistical quantity calculator that calculates a first statistical quantity of the first variance value for a predetermined period; and a determiner that determines presence or absence of a living body based on the first statistical quantity.
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公开(公告)号：US11513207B2
公开(公告)日：2022-11-29
申请号：US16589537
申请日：2019-10-01
发明人： Youn Joo Kim , Abhiram Chakraborty
摘要： Display control devices and methods are provided. Vital functions of a person are detected using a radar circuit, and power consumption of a display is controlled based on the detected vital functions.
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公开(公告)号：US11500058B2
公开(公告)日：2022-11-15
申请号：US17214841
申请日：2021-03-27
申请人： Yuqian Hu , Beibei Wang , Muhammed Zahid Ozturk , Feng Zhang , K. J. Ray Liu , Oscar Chi-Lim Au , Xiaolu Zeng , Chenshu Wu , Fengyu Wang
发明人： Yuqian Hu , Beibei Wang , Muhammed Zahid Ozturk , Feng Zhang , K. J. Ray Liu , Oscar Chi-Lim Au , Xiaolu Zeng , Chenshu Wu , Fengyu Wang
摘要： Methods, apparatus and systems for wireless proximity sensing are described. In one example, a described system comprises: a transmitter configured for transmitting a first wireless signal through a wireless multipath channel of a venue; a receiver configured for receiving a second wireless signal through the wireless multipath channel; and a processor. The second wireless signal differs from the first wireless signal due to the wireless multipath channel that is impacted by a movement of an object in the venue. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, wherein each channel information (CI) of the TSCI comprises a plurality of CI components, each of which is associated with an index; computing an inter-component statistics based on the plurality of CI components; computing, based on the inter-component statistics, a proximity information of the object with respect to a reference location in the venue; and performing a task based on the proximity information of the object.
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公开(公告)号：US20220357959A1
公开(公告)日：2022-11-10
申请号：US17307104
申请日：2021-05-04
申请人： Tricklestar Limited
IPC分类号： G06F9/4401 , G06F3/02 , G06F1/3206 , G06F1/3234 , G01S13/56
摘要： A system for putting a computer device into sleep mode, the system being configured to: (a) activate a timer to count for a predetermined amount of time; (b) generate motion data with a radar module; (c) if motion data received from the radar module indicates that movement of a user of the computer device has been detected, then repeat steps (a) & (b); (d) if the timer has not expired, then repeat step (b); and (e) send a sleep mode instruction to the computer device.
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公开(公告)号：US11460537B2
公开(公告)日：2022-10-04
申请号：US16992107
申请日：2020-08-13
申请人： Gaodi Zou
摘要： A microstrip mixer of a microwave-doppler detecting module has a shared port, a local oscillator signal input port and a mixing output port and includes two mixer tubes. The local oscillator signal input port is electrically connected with the shared port and is electrically connected with an end of one of the mixer tubes through the shared port. The local oscillator signal input port is also electrically connected with the mixing output port and is electrically connected with an end of the other mixer tube through the mixing output port. The other ends of the two mixer tubes are respectively grounded. Accordingly, the microstrip mixer is configured to have an open structure having three ports, which is more flexible and enhances the applicability thereof while reducing the size of the microwave-doppler detecting module utilizing the microstrip mixer.
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公开(公告)号：US20220308195A1
公开(公告)日：2022-09-29
申请号：US17838228
申请日：2022-06-12
申请人： Xiaolu Zeng , Beibei Wang , Chenshu Wu , Sai Deepika Regani , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Xiaolu Zeng , Beibei Wang , Chenshu Wu , Sai Deepika Regani , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： Methods, apparatus and systems for wireless sensing based on channel information are described. In one example, a described system comprises: a transmitter configured to transmit a wireless signal through a wireless multipath channel of a venue, wherein the wireless multipath channel is impacted by a motion of an object in the venue; a receiver configured to receive the wireless signal through the wireless multipath channel, wherein the received wireless signal differs from the transmitted wireless signal due to the wireless multipath channel and the motion of the object; and a processor. The processor is configured for: obtaining N1 time series of channel information (TSCI) of the wireless multipath channel based on the received wireless signal, computing N4 selected projections based on the N1 TSCI, and performing a sensing task associated with the motion of the object based on the N4 selected projections. N4 is a positive integer. N1=N2*N3. N2 is a quantity of transmit antennas on the transmitter. N3 is a quantity of receive antennas on the receiver. Each TSCI is associated with a respective transmit antenna of the transmitter and a respective receive antenna of the receiver.
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