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公开(公告)号：US10530258B1
公开(公告)日：2020-01-07
申请号：US16392664
申请日：2019-04-24
Inventor： Zekun Zhou , Yunkun Wang , Yandong Yuan , Shilei Li , Zhuo Wang , Bo Zhang
Abstract: A predictive dead time generating circuit includes a dead time detecting module configured to detect a dead time between the switching off of the upper power transistor and the switching on of the lower power transistor, and a dead time between the switching off of the lower power transistor and the switching on of the upper power transistor, and to generate a first detecting signal and a second detecting signal according to the condition of whether the detected dead time reaches an optimal value. The logic control module changes the output of the delay module according to the judgment result of the dead time detecting module, so as to change the dead time between the driving signal of the upper power transistor and the driving signal of the lower power transistor.
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公开(公告)号：US20190392551A1
公开(公告)日：2019-12-26
申请号：US16435465
申请日：2019-06-08
Inventor： Wuhuang HUANG , Pan WANG , Jun JIANG , Peng YE , Kuojun YANG , Lianping GUO , Hao ZENG , Shuo WANG , Jian GAO
Abstract: The present invention provides a method for 3D waveform mapping of full-parallel structure, first, a 3D waveform mapping database is created according to the size of a 3D waveform image, the number of bits of probability value and the ADC's resolution of data acquisition module, then the 3D waveform mapping database is divided into Mt×Ma independent mapping storage areas along the time axis and the amplitude axis, and each independent mapping storage area is assigned a RAM, then RAMs are selected and addresses are calculated based on the sampling values and the structure of created 3D waveform mapping database, finally, parallel mappings are performed simultaneously on the time axis and the amplitude axis according to the selected RAMs and calculated addresses. Thus, the mapping time are shorten, especially in vector mapping mode, several RAMs are used for mapping, so the WCR of DSO is improved.
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公开(公告)号：US10475996B2
公开(公告)日：2019-11-12
申请号：US15989188
申请日：2018-05-25
Inventor： Wei Li , Yicheng Chen , Dongyang Li , Hao Zhong , Deen Gu , Yadong Jiang
Abstract: An optical-readout synaptic device based on SiOxNy and a preparation method thereof are provided. The device includes a surface plasmonic waveguide and a memristor; the surface plasmonic waveguide has a vertical three-layer structure that a second metal layer, a SiNx dielectric layer and a first metal layer are successively arranged from top to bottom; the memristor has a vertical four-layer structure that a second electrode layer, a second resistive layer, a first resistive layer and a first electrode layer are successively arranged from top to bottom; the memristor is embedded in the surface plasmonic waveguide; and, the first resistive layer and the second resistive layer of the memristor serve as an optical signal transmission channel that is horizontally connected with the SiNx dielectric layer of the surface plasmonic waveguide. The present invention realizes an optical-readout of synaptic weight and has incomparable advantages over a conventional electrical-readout synaptic device.
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174.发明申请公开(公告)号：US20190339381A1
公开(公告)日：2019-11-07
申请号：US16169053
申请日：2018-10-24
Inventor： YAN CHEN , YUNPING CHEN , JING CHEN
Abstract: A method, a device and a storage medium for extracting height and deformation information of a high voltage transmission tower by using SAR tomography are disclosed. A Spaceborne satellite is used to obtain a plurality of high resolution SAR images of a region having a high voltage transmission tower. The images are then pre-processed via registration, dechirp and phase compensation to obtain observation data. The observation data is then discretized. Then the discretized observation data is resampled by using singular value decomposition, and Akaike information criterion is used to estimate the number of scattering points in the resampled observation data. The obtained number of the scattering points is used to eliminate the singular values in the reconstructed signal. Finally, the sparsity of the observation data is used together with compression sensing to realize signal reconstruction, thereby extracting the height and deformation rate at a position on the high voltage transmission tower.
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公开(公告)号：US10466797B2
公开(公告)日：2019-11-05
申请号：US15284273
申请日：2016-10-03
Inventor： Xingguang Song , Hong Cheng , Yanli Ji , Yang Zhao , Guo Ye
Abstract: Embodiments of the present invention provide a pointing interaction method, apparatus, and system. The method includes: obtaining a hand image and an arm image; determining spatial coordinates of a fingertip according to the hand image, and determining spatial coordinates of an arm key portion according to the arm image; and performing converged calculation on the spatial coordinates of the fingertip and the spatial coordinates of the arm key portion, to determine two-dimensional coordinates, on a display screen, of an intersection point between fingertip pointing and the display screen. Therefore, the pointing interaction apparatus can implement high-precision pointing only by using the spatial coordinates of the fingertip and the spatial coordinates of the arm key portion, and the pointing has good realtimeness.
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Patent Agency Ranking
公开(公告)号：US20190317122A1
公开(公告)日：2019-10-17
申请号：US16451917
申请日：2019-06-25
Inventor： Wei ZHANG , Yanjun LI , Zhenghua GU , Yibing SHI , Fan WANG , Wenqing ZHANG , Zhipeng LI , Jian ZHOU , Zhipeng ZHAN
Abstract: The present invention provides a wind measurement apparatus based on 3D (three dimensional) non-orthogonal ultrasonic sensor array, the ultrasonic sensor array is composed of two group of ultrasonic sensors, which are centrosymmetrically located at opposite sides, and the angle formed by connecting any two ultrasonic sensors at a side to the symmetry point O is less than 90°, the arrangement of 3D non-orthogonal ultrasonic sensor array reduces the generation of turbulence, thus, the accurate wind speed and wind direction is obtained. In the mean time, the central channel is employed to obtain a reference wind speed vref. Comparing the speed component vcentral along central channel of the wind under measurement with the reference wind speed vref, if the difference is less than a present threshold, then computing module outputs the measurement results, or discards them, thus the wind measurement accuracy is further improved.
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公开(公告)号：US20190305080A1
公开(公告)日：2019-10-03
申请号：US15737523
申请日：2016-08-17
Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA , CHONGQING PINGWEI ENTERPRISE CO., LTD.
Inventor： JIANGFENG DU , ZHENCHAO LI , DONG LIU , ZHIYUAN BAI , QI YU , SHUZHOU LI
IPC: H01L29/06 , H01L29/861
Abstract: A semiconductor structure, a semiconductor assembly and a power semiconductor device. The semiconductor structure includes: a P-type semiconductor material layer; an N-type semiconductor material layer adjacent to the P-type semiconductor material layer, wherein the N-type semiconductor material layer and the P-type semiconductor material layer together from a PN junction; and a plurality of insulating material layers located outside the PN junction and distributed along the superposition direction of the P-type semiconductor material layer and the N-type semiconductor material layer, wherein the relative dielectric constants of the adjacent insulating material layers are different. The semiconductor structure in the present invention significantly optimizes the distribution of an electric field during the off-state high voltage operation of a device, greatly improves the breakdown voltage of the device, avoids the premature breakdown of the device caused by the concentration effect of the electric field at the edge of the junction.
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公开(公告)号：US10367451B2
公开(公告)日：2019-07-30
申请号：US15696533
申请日：2017-09-06
Inventor： Peng Ye , Feng Tan , Xingqi Liu , Duyu Qiu , Lianping Guo , Kuojun Yang , Qinchuan Zhang , Huiqing Pan
Abstract: The present invention provides a temperature-compensated crystal oscillator based on digital circuit, a closed-loop compensation architecture is employed to realize the high precision compensation of the crystal oscillator. The output frequency f(T) of the TCXO to be compensated is directly connected with the compensation voltage Vc(T) in real time, and the compensation voltage is fed back to the voltage control terminal of the VCXO to be compensated to compensate, so that the output frequency after compensation is equal to the target frequency signal, thus avoiding the frequency shift of output signal caused by temperature hysteresis, i.e. the discrepancy between the temperature acquired by a temperature sensor and the real temperature of the resonant wafer in the prior art.
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179.发明申请公开(公告)号：US20190228517A1
公开(公告)日：2019-07-25
申请号：US16370136
申请日：2019-03-29
Inventor： Yuhua CHENG , Chun YIN , Haonan ZHANG , Xuegang HUANG , Ting XUE , Kai CHEN , Yi LI
Abstract: The present invention provides a method for separating out a defect image from a thermogram sequence based on feature extraction and multi-objective optimization, we find that different kinds of TTRs have big differences in some physical quantities, such as the energy, temperature change rate during endothermic process, temperature change rate during endothermic process, average temperature, maximum temperature. The present invention extract these features (physical quantities) and cluster the selected TTRs into L clusters based on their feature vectors, which deeply digs the physical meanings contained in each TTR, makes the clustering more rational, and improves the accuracy of defect separation. Meanwhile, the present invention creates a multi-objective function to select a RTTR for each cluster based on multi-objective optimization. The multi-objective function does not only fully consider the similarities between the RTTR and other TTRs in the same cluster, but also considers the dissimilarities between the RTTR and the TTRs in other clusters, the RTTR is more representative, which guarantees the accuracy of describing the defect outline.
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公开(公告)号：US20190228221A1
公开(公告)日：2019-07-25
申请号：US16370202
申请日：2019-03-29
Inventor： Chun YIN , Yuhua CHENG , Ting XUE , Xuegang HUANG , Haonan ZHANG , Kai CHEN , Anhua SHI
Abstract: A method for separating out a defect image from a thermogram sequence based on weighted naive Bayesian classifier and dynamic multi-objective optimization. A method extracts these features and classifies the selected TTRs into K categories based on their feature vectors through a weighted naive Bayesian classifier, which deeply digs the physical meanings contained in each TTR, makes the classification of TTRs more rational, and improves the accuracy of defect image's separation. Meanwhile, the multi-objective function does not only fully consider the similarities between the RTTR and other TTRs in the same category, but also considers the dissimilarities between the RTTR and the TTRs in other categories, thus the RTTR selected is more representative, which guarantees the accuracy of describing the defect outline. The initial TTR population approximate solution for multi-objective optimization is chosen according to the previous TTR populations, which makes the multi-objective optimization dynamic and reduces its time consumption.
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