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公开(公告)号：US20190305141A1
公开(公告)日：2019-10-03
申请号：US15936903
申请日：2018-03-27
Inventor： Siu Wai Wong , Shu Kin Yau
IPC: H01L29/872 , H01L29/16 , H01L29/45 , H01L29/417 , H01L21/04 , H01L29/66 , H01L23/31 , H01L21/02 , H01L29/06 , H01L27/08
Abstract: A silicon carbide chip array containing a silicon carbide substrate; a silicon carbide layer on top of the silicon carbide substrate; a first metal contact connected to the silicon carbide substrate; and two second metal contacts connected to the first portion and the second portion respectively. The silicon carbide layer is thinner and having lower doping than the silicon carbide layer. The silicon carbide layer includes a first portion and a second portion which are separate from each other. Each one of the second metal contacts forms a semiconductor device with the first metal contact. At least one of the first and second portions contains a side face which is inclined with respect to the silicon carbide substrate. Such a configuration enhances the breakdown voltage and reduces leakage current of the resultant silicon carbide diode array.
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公开(公告)号：US10367594B2
公开(公告)日：2019-07-30
申请号：US15616002
申请日：2017-06-07
Inventor： Ho Yin Chan , Chang Li , Man Wai Kwan , Yuxian Zhang , Kong Chau Tsang
Abstract: Provided is a method of determining timing of arrival of a signal on a path to a receiver in a mobile wireless communications system. The method comprises obtaining a channel impulse response (CIR) of a signal received at the receiver and deriving a power characteristic of the CIR. The method includes producing a first derivative of the power characteristic with respect to time, selecting some or all extrema from the first derivative of the power characteristic as indicative of candidate signal paths, and selecting one or more of said candidate signal paths. The method preferably includes determining timing of arrival of a signal on a first path of arrival at the receiver by assessing an energy value of each of said candidate signal paths against a threshold value.
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公开(公告)号：US20190188856A1
公开(公告)日：2019-06-20
申请号：US15845846
申请日：2017-12-18
Inventor： Tian Qiu
Abstract: Methods and systems which provide object edge image representation generation using block based edgel techniques implementing post edgel detection processing to eliminate false edges are described. Embodiments subdivide image data (e.g., image point clouds) to facilitate separate edgel detection processing of a plurality of sub-blocks of the image data. A false edge elimination algorithm of embodiments is applied in recombining the object edge image representation sub-blocks resulting from the sub-block edgel detection processing to eliminate false edge artifacts associated with use of block based edgel detection.
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公开(公告)号：US10250076B2
公开(公告)日：2019-04-02
申请号：US15458971
申请日：2017-03-15
Abstract: A wireless power transmitter that supplies power to a load. The wireless power transmitter includes an inverter, a voltage phase detector, a current phase detector, a phase difference counter, a controller and an impedance tuning circuit. The phase difference counter counts a phase difference between the voltage phase and the current phase at the output port of the inverter. The controller receives the phase difference from the phase difference counter and generates a control signal that changes an output impedance of the inverter in response to changes of a varying impedance of the load that is coupled with the output port of the inverter wirelessly. The impedance tuning circuit receives the control signal from the controller and tunes an imaginary part of the output impedance of the inverter to zero in order to maximize a power transfer efficiency from the wireless power transmitter to the load.
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公开(公告)号：US10244495B1
公开(公告)日：2019-03-26
申请号：US15718492
申请日：2017-09-28
Inventor： Wilson Wang Kit Thong , Victor Man Wai Kwan , Elaine Jihui Zhang , Jie Chuai , Ching Hong Leung , Yan Lam Lee , Eric Kong Chau Tsang
Abstract: Methods and systems which provide for synchronization target selection by configuring a network device to reselect a synchronization signal transmission timeslot for synchronization target searching by the network device are described. Synchronization signal timeslot reselection may provide for downgrading a current stratum index to an artificial stratum index that does not accurately indicate a number of hops between the network device and a global synchronization source to allow for selection of available synchronization targets with stratum indices that are higher than or equal to the network device's stratum index without causing a synchronization loop. A synchronization signal pattern cycle structure having synchronization signal timeslots organized into multiple subcycles for accommodating synchronization signal timeslot reselection is utilized according to embodiments.
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Patent Agency Ranking
公开(公告)号：US20190053173A1
公开(公告)日：2019-02-14
申请号：US15673105
申请日：2017-08-09
Inventor： Wilson Wang Kit Thong , Elaine Jihui Zhang , Victor Man Wai Kwan , Vincent Zizhou Wang , Eric Kong Chau Tsang , Wei Han
IPC: H04W56/00
Abstract: The present disclosure relates to methods and systems for selection of synchronization targets. Embodiments of the present disclosure provide for selecting a synchronization target for a network device, within operational network constraints, when the network device loses its current synchronization target. When a network device loses its current synchronization target, the stratum index of the network device is downgraded to an artificial stratum index before a selection of a new synchronization target is made. The artificial stratum index is broadcast to children network devices. Downgrading the stratum index to an artificial stratum index allows for selection of available synchronization target network devices with stratum indices higher than or equal to the network device's stratum index. After selection of a new synchronization target, the network device's stratum index is updated, and the new updated stratum index of the network device is broadcast to the children network devices of the network device.
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公开(公告)号：US10105089B2
公开(公告)日：2018-10-23
申请号：US14933647
申请日：2015-11-05
Inventor： Lap Wai Lydia Leung , Wenbo Gu
Abstract: Techniques for effectively and accurately measuring psychological influencing factors, such as the white coat effect and mental stress, that may affect or otherwise influence biometric measurements, such as blood pressure measurements, are described. Embodiments of a measurement validation system herein may utilize a method for determining an artery location on a living subject's skin and positioning a tonometry pressure sensor on the artery location for tonometric blood pressure measurement to obtain pressure pulse data for a subject. In operation according to embodiments, measurement logic of a measurement validation system may utilize the pressure pulse data to extract blood pressure data, heart rate data, blood pressure variability data, and heart rate variability data. The foregoing data may be utilized in identifying whether the blood pressure measurement properly and accurately reflects the situation of the subject.
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公开(公告)号：US10058255B2
公开(公告)日：2018-08-28
申请号：US14289649
申请日：2014-05-29
Inventor： Chi Kit Cheng
IPC: A61B5/0255 , A61B5/021 , A61B5/00
CPC classification number: A61B5/0255 , A61B5/02007 , A61B5/02116 , A61B5/7246 , A61B5/7282
Abstract: A method of determining stiffness index of an arterial network is disclosed. The method comprises the steps of: obtaining a pulse waveform related to the arterial network; estimating a source pulse based on at least one predetermined feature of the pulse waveform; determining a plurality of characteristics of the pulse waveform based on a relationship between the pulse waveform and the source pulse; and calculating the stiffness index of the arterial network based on the plurality of characteristics of the pulse waveform. An arterial stiffness index measuring device employing the above methodology is also disclosed therein.
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公开(公告)号：US10037231B1
公开(公告)日：2018-07-31
申请号：US15615988
申请日：2017-06-07
Inventor： Vinit Jakhetiya , Lu Wang , Fei Yu
CPC classification number: G06F9/5072 , G06F2209/509 , H04L67/10 , H04L67/2847 , H04W4/50
Abstract: Provided is a method and system in a mobile wireless communication network for jointly determining computational offloading and data prefetching for a plurality of user equipments (UEs) in the mobile network. The method includes using a decision module in the mobile wireless communication network to process data indicative of mobile wireless communication network status including statuses of one or more UEs attached to the network. The decision module is configured to determine if the status of the mobile wireless communication network including said one or more UEs is sufficient to support joint computational offloading and data prefetching by at least one of the UEs. In the case that a positive determination is made, the decision module transmits a message to a UE to enable it to offload part of its computational load to one of a network edge computing node, a mobile wireless communication network server, and server in a network connected to the mobile wireless communication network; and to prefetch data to one of the network edge computing node, the mobile wireless communication network server, and a mobile wireless communication network data cache.
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公开(公告)号：US20180211404A1
公开(公告)日：2018-07-26
申请号：US15412948
申请日：2017-01-23
Inventor： Xinghua Zhu , Jingjie Li , Felix Chow
CPC classification number: G06T7/70 , G06T7/246 , G06T7/579 , G06T17/00 , G06T17/10 , G06T19/006 , G06T2207/10016 , G06T2207/10024 , G06T2207/30204
Abstract: Systems, methods, and computer-readable storage media for constructing and using a model for tracking an object are disclosed. The model may be constructed from a plurality of images and a coordinate system defined with respect to the pedestal upon which the object is placed, where the plurality of images correspond to images of the object while the object is placed on a pedestal, and where the pedestal includes a plurality of markers. The model for tracking the object may be configured to provide information representative of a camera position during tracking of the object using a camera. Tracking the object using the model may include obtaining one or more images of the object using a camera, and determining a position of the camera relative to the object based on the model.
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