Patents Assigned to University of Electronic Science and Technology
-
Patent number: 11234615Abstract: A three-dimensional folding self-driving flexible respiration monitoring sensor and the preparing method thereof is disclosed. In the present invention a first friction unit and a second friction unit are set on a bottom of the box, which comprise a substrate, a conductive electrode layer and a friction layer respectively; the second friction unit is fixed on the bottom of the box; a friction layer of the first friction unit faces a friction layer of the second friction unit; a back plate is set on a substrate of the first friction unit; a balloon is between the box and the back plate; an inlet tube connects the balloon and the box, which is on a side wall of the box; the conductive electrode layer of the first friction layer and the second friction layer are connected to the electrometer respectively. Micro-energy of the respiration is adopted to monitor the breathing.Type: GrantFiled: August 5, 2019Date of Patent: February 1, 2022Assignee: University of Electronic Science and Technology of ChinaInventors: Huiling Tai, Yadong Jiang, Si Wang, Bohao Liu, Zhen Yuan, Qi Huang, Guangzhong Xie
-
Patent number: 11237451Abstract: An optical device includes a first electrode layer, a first alignment layer, a liquid crystal layer, a second alignment layer, and a second electrode layer being arranged in turn along a light transmission direction; wherein the first electrode layer comprises a first electrode, a second electrode, and a first impedance membrane arranged between the first electrode and the second electrode, and the first electrode and the second electrode are respectively arranged on opposite ends of the first impedance membrane; the second electrode layer has a structure similar to that of the first electrode layer. The four electrodes form a light transmission hole being shaped as a parallelogram. The present invention solves the problem that the focal length of the liquid crystal lens cannot be accurately adjusted due to the instability of the impedance of the impedance membrane of the present liquid crystal lens.Type: GrantFiled: August 8, 2020Date of Patent: February 1, 2022Assignee: University of Electronic Science and Technology of ChinaInventors: Mao Ye, Xiaoxi Chen, Guangyong Li, Yalei Zhang
-
TEMPORAL DOMAIN RATE DISTORTION OPTIMIZATION CONSIDERING CODING-MODE ADAPTIVE DISTORTION PROPAGATION
Publication number: 20220007031Abstract: A temporal domain rate distortion optimization considering a coding-mode adaptive distortion propagation is provided. A problem of dependency rate distortion optimization based on a temporal domain distortion propagation is induced again according to a temporal domain dependency relationship under an LD structure and a distortion propagation analysis under a skip mode and an inter mode; and an aggregation distortion of a current coding unit and an affected future coding unit are estimated and a propagation factor of a coding unit in a temporal domain distortion propagation model is calculated by constructing a time propagation chain, wherein a Lagrange multiplier is adjusted through an accurate propagation factor to realize a temporal domain dependency rate distortion optimization, and an I frame is subjected to a secondary coding technology to realize the temporal domain dependency rate distortion optimization of the I frame.Type: ApplicationFiled: August 26, 2021Publication date: January 6, 2022Applicant: University of Electronic Science and Technology of ChinaInventors: Ce ZHU, Lingling DENG, Ni JIANG, Qiuyue WANG, Keke DING -
Patent number: 11215515Abstract: A preparation method of a three-layer self-healing flexible strain sensor includes steps of: preparing an encapsulating layer composite, so as to obtain a concentrated solution; preparing a strain sensitive layer composite, so as to obtain a thick liquid; dropping the thick liquid on a glass substrate, and statically curing at a room temperature; dropping the concentrated solution on a cured film obtained in the S3, and statically curing at the room temperature; striping a cured filmed obtained in the S4 from the glass substrate, and drawing out two wires as electrodes; and dropping the concentrated solution on the other surface of the cured film obtained in the S3 with a same amount of S4, and statically curing at the room temperature for obtaining the three-layer self-healing flexible strain sensor. The three-layer self-healing structure strain sensor can be prepared without using a repair agent, but can achieve rapid self-repair.Type: GrantFiled: August 28, 2020Date of Patent: January 4, 2022Assignee: University of Electronic Science and Technology of ChinaInventors: Yadong Jiang, Huiling Tai, Dongsheng Wang, Zhen Yuan, Mingjun Zhou, Jing Yang
-
Publication number: 20210392382Abstract: A loop filtering method based on an adaptive self-guided filtering is mainly an adaptive self-guided filtering technology considering local structure information of an image, wherein a regularization coefficient is adjusted by calculating a weight coefficient of the regularization coefficient to realize the adaptive self-guide filtering, and then a region-level subspace mapping iterative optimization implemented on each region enables a mapping result of the each region to be optimal, wherein the mapping result of a whole image is closer to an original image. Beneficial effects of the loop filtering method are as follows: a filtering effect of a loop filtering is improved, a distortion effect of a reconstruction image is reduced and a reconstruction quality of a video frame is improved, wherein the reconstruction image is more favorable for a subsequent reference and a subjective and objective quality of the video is further improved.Type: ApplicationFiled: August 27, 2021Publication date: December 16, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Ce ZHU, Lingling DENG, Ni JIANG, Qiuyue WANG, Keke DING
-
Publication number: 20210385081Abstract: A key generation method based on a deep learning generative adversarial network includes: preparing a training set image; construction of a key generation network: constructing the key generation network according to a generator network and a discriminator network, and inputting the training set image to the key generation network; and training of the key generation network: training the key generation network by a deep learning method to generate a key.Type: ApplicationFiled: June 2, 2021Publication date: December 9, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Yi DING, Zhen QIN, Fuyuan TAN, Fuhu DENG, Zhiguang QIN
-
Patent number: 11177426Abstract: A low-temperature high-performance thermoelectric material possesses a chemical formula of (AgyCu2?y)1?xTe1?zSez, wherein ?0.025?x?0.075, 0.6?y?1.4, 0<z?0.25, diffraction peaks of a main phase of the thermoelectric material are indexed as a cubic structure at room temperature of 300 K, a highest ZT value between 300 K and 673 K is in range of 0.4 to 1.6, an average ZT value (ZT)avg is in range of 0.2 to 1.4. The highest ZT value of this material at the room temperature is comparable to that of Bi2Te3, which is an excellent complement to existing low-temperature thermoelectric materials. At the same time, the present invention also indicates a new strategy to improve the low-temperature thermoelectric performance of Cu2X-based (here, X is S, Se, Te) materials, and lays a foundation for the application of Cu2X-based materials in the field of low-temperature thermoelectricity.Type: GrantFiled: May 22, 2019Date of Patent: November 16, 2021Assignee: University of Electronic Science and Technology of ChinaInventors: Jing Jiang, Yan Pan, Yi Niu, Ting Zhou, Rui Zhang, Xinrui He, Chao Wang
-
Publication number: 20210347943Abstract: A process for producing polyarylene ether nitrile, in which an N-methylpyrrolidone solvent can be efficiently recovered. The process includes the following steps: mixing N-methylpyrrolidone, potassium carbonate, 2,6-dichlorobenzonitrile, dihydric phenol and toluene, and carrying out a dehydration reaction and a polymerization reaction in sequence to obtain a high-viscosity polyarylene ether nitrile solution; then pelletizing and conveying polyarylene ether nitrile particles together with methanol to a primary vibrating screen to complete a primary replacement of N-methylpyrrolidone; then using a secondary vibrating screen to complete a secondary replacement of the solvent; subsequently, grinding the polyarylene ether nitrile particles and carrying out an extraction with methanol, and then centrifuging, washing with water and drying to obtain purified polyarylene ether nitrile powder; and finally distilling replacement liquid and centrifugation liquid to separate methanol from N-methylpyrrolidone.Type: ApplicationFiled: August 13, 2020Publication date: November 11, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Xiaobo LIU, Mingzhen XU, Kun JIA, Lifen TONG
-
Publication number: 20210336052Abstract: A power MOS device with low gate charge and a method for manufacturing the same. The device includes an M-shaped gate structure, which reduces the overlapped area between control gate electrode and split gate electrode. A low-k material is introduced to reduce dielectric constant of the isolation medium material. The combination of the M-shaped gate structure and low-k material can reduce parasitic capacitance Cgs of the device, thereby increasing switching speed and reducing switching losses.Type: ApplicationFiled: August 28, 2020Publication date: October 28, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Ming QIAO, Zhengkang WANG, Shida DONG, Bo ZHANG
-
Publication number: 20210305051Abstract: A metal wiring method for reducing gate resistance of a narrow control gate structure, wherein the gate structure is etched with first gate electrodes and second gate electrodes at regular intervals and kept with complete gate electrodes at regular intervals, thereby constituting a structure in which the first and second gate electrodes and the complete gate electrodes are spaced apart. A first contact hole is etched on the complete gate electrode to draw out metal as a first metal layer. A second contact hole is etched on a source region and a split gate to draw out metal as a second metal layer. These two metal layers are separated by a dielectric layer. A multi-point contact of the first layer of metal with the gate electrode in a Y direction reduces the gate resistance caused by an excessively long path in the Y direction of a control gate electrode.Type: ApplicationFiled: August 27, 2020Publication date: September 30, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Ming QIAO, Shida DONG, Zhengkang WANG, Dong FANG, Zhuo WANG, Bo ZHANG
-
Publication number: 20210288698Abstract: A design method for an intelligent reflecting surface (IRS) aided terahertz secure communication system is provided. The IRS aided terahertz multi-input single-output (MISO) system includes a base station (BS) equipped with NBS antennas, an IRS equipped with NIRS reflecting elements, a single-antenna user and a single-antenna eavesdropper. The BS transmits signals by the active hybrid beamforming to the relay of the IRS, and the IRS adjusts the signals and reflects the signals to the mobile user, which suppresses the received signal of the eavesdropper. The present invention maximizes the downlink secrecy rate by establishing a joint optimization function and maximizes the system data transmission rate by a cross-entropy based search method.Type: ApplicationFiled: October 29, 2020Publication date: September 16, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Zhi CHEN, Xinying MA, Wenjie CHEN
-
Publication number: 20210273095Abstract: A low specific on-resistance (Ron,sp) power semiconductor device includes a power device and a transient voltage suppressor (TVS); wherein the power device comprises a gate electrode, a drain electrode, a bulk electrode, a source electrode and a parasitic body diode, the bulk electrode and the source electrode are shorted, the TVS comprises an anode electrode and a cathode electrode, the drain electrode of the power device and the anode electrode of the TVS are connected by a first metal to form a high-voltage terminal electrode, the source electrode of the power device and the cathode electrode of the TVS are connected by a second metal to form a low-voltage terminal electrode.Type: ApplicationFiled: May 19, 2020Publication date: September 2, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Ming QIAO, Longfei LIANG, Yilei LYU, Zhao QI, Bo Zhang
-
Publication number: 20210248812Abstract: The present invention provides a method for reconstructing a 3D object based on dynamic graph network, first, obtaining a plurality of feature vectors from 2D image I of an object; then, preparing input data: predefining an initial ellipsoid mesh, obtaining a feature input X by filling initial features and creating a relationship matrix A corresponding to the feature input X; then, inputting the feature input X and corresponding relationship matrix A to a dynamic graph network for integrating and deducing of each vertex's feature, thus new relationship matrix is obtained and used for the later graph convoluting, which improves the initial graph information and makes the initial graph information adapted to the mesh relation of the corresponding object, therefore the accuracy and the effect of 3D object reconstruction have been improved; last, regressing the position, thus the 3D structure of the object is deduced, and the 3D object reconstruction is completed.Type: ApplicationFiled: April 29, 2021Publication date: August 12, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Ping KUANG, Liang PENG, Xiaofeng GU
-
Publication number: 20210217901Abstract: A double Schottky-barrier diode includes a semi-insulating substrate, a left mesa formed by growth and etching on the semi-insulating substrate, a middle mesa formed by growth and etching on the semi-insulating substrate, a right mesa formed by growth and etching on the semi-insulating substrate, two anode probes and two air-bridge fingers. The two Schottky contacts are closely fabricated on the same mesa (middle mesa) in a back-to-back manner to obtain even symmetric C-V characteristics and odd symmetric I-V characteristics from the device level. The output of a frequency multiplier fabricated using the double Schottky-barrier diode only has odd harmonics, but no even harmonics, which is suitable for the production of high-order frequency multipliers. The cathodes of the two Schottky contacts are connected by the buffer layer without ohmic contact.Type: ApplicationFiled: October 23, 2020Publication date: July 15, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Yong ZHANG, Chengkai WU, Han WANG, Haomiao WEI, Ruimin XU, Bo YAN
-
Patent number: 11062072Abstract: A yield load pull system-based integrated circuit design method and a system thereof are provided. The method includes: setting a yield-related threshold; setting a source impedance; configuring a sweep range of a Smith chart; determining load impedance points within the sweep range of the Smith chart; acquiring impedance information; determining output characteristics of a plurality of sample devices at each load impedance point of the determined load impedance points, based on the source impedance and the impedance information corresponding to each load impedance point, by invoking a harmonic balance simulator embedded in an Advanced Design System, where the output characteristics comprise: a large-signal gain, an output power and a power-added efficiency; determining a device yield for each load impedance point; for each output characteristic calculating a mean value across the plurality of sample devices, at each load impedance point; and determining a best load impedance; conducting IC design.Type: GrantFiled: June 25, 2020Date of Patent: July 13, 2021Assignee: University of Electronic Science and Technology of ChinaInventors: Yuehang Xu, Shuman Mao, Yunqiu Wu
-
Publication number: 20210204117Abstract: A method for physical layer secure transmission against an arbitrary number of eavesdropping antennas includes: S1: communication between legitimate transmitter Alice and legitimate receiver Bob is confirmed; S2: Alice randomly generates a key bit bk with MS bits, maps the key bit bk into a key symbol K, and performs an XOR on the key bit bk and to-be-transmitted confidential information b to obtain an encrypted bits bs; S3: Bob transmits a pilot sequence to Alice, and Alice calculates a candidate precoding space W and transmits modulated symbol streams s=(s1, . . , sN) by using precoding W(e); S4: Bob measures received signal strength of each antenna, estimates the corresponding antenna vector e, inversely maps the vector e to obtain key symbols and key bits, and demodulates the received symbol streams in sequence at each activated antenna to obtain demodulated ciphertext bits; S5: Bob performs an XOR on observed key bits and the demodulated ciphertext bits to obtain the confidential information.Type: ApplicationFiled: December 27, 2020Publication date: July 1, 2021Applicants: University of Electronic Science and Technology of China, Science & Technology Department of Sichuan ProvinceInventors: Jie Tang, Liang Chen, Hong Wen, Xinchen Xu, Huanhuan Song, Kaiyu Qin
-
Publication number: 20210193856Abstract: A wear-resistant self-cleaning solar cell panel includes a transparent substrate. A plurality of continuous microstructures are arranged on the transparent substrate, and each microstructure is an inverted pyramid or an inverted conical hole, and the microstructure is filled with a plurality of superhydrophobic nanomaterials, the microstructures and the superhydrophobic nanomaterials jointly constitute a composite surface of the solar cell panel. An angle of a side wall of the inverted pyramid or the inverted conical hole is ?, wherein 30°<?<90°. A side length of the microstructure is a, wherein 1 ?m<a<2 mm. A spacing between adjacent microstructures is b, wherein 10 nm<b<2 mm. The superhydrophobic nanomaterials are filled into the microstructure by an in-situ deposition method or an indirect filling method.Type: ApplicationFiled: October 21, 2020Publication date: June 24, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Xu DENG, Dehui WANG
-
Patent number: 11042986Abstract: A method for thinning and connection in linear object extraction from an image and including the following steps: 1. extracting direction features using various sliding windows from the binary image obtained of linear objects. 2. decomposing the binary image into several binary image layers according to the direction features. 3. extracting thinned curves and endpoints of each binary image layer by conducting curve fitting on each connected component using coordinate information. 4. connecting the thinned curves by computing spatial distances between the endpoints belonging to different thinned curves, angles between the tangential direction and connected direction vectors of the connected points. Finally, the road network image is constructed by overlaying image layers with the thinned curves.Type: GrantFiled: November 29, 2019Date of Patent: June 22, 2021Assignee: University of Electronic Science and Technology of ChinaInventors: Ling Tong, Fanghong Xiao
-
Publication number: 20210185318Abstract: A method for optimizing a second coding is provided. The method includes: Setting a quantization parameter of a start frame of a video sequence according to a range of an input quantization parameter QP0 of a coder; performing first coding with a simplified method, and calculating a frame-level temporal impact factor ki of a current frame and a block-level temporal impact factor kB,j of all 16×16 pixel blocks in the current frame; restoring reference list information of the coder after the first coding is completed, and then determining whether a scene is switched; and performing the second coding by setting quantization parameters with different strategies according to whether the scene is switched.Type: ApplicationFiled: December 10, 2020Publication date: June 17, 2021Applicant: University of Electronic Science and Technology of ChinaInventors: Ce Zhu, Hongwei Guo, Yuyang Liu, Mao Ye
-
Patent number: 10996107Abstract: The present disclosure relates to an exponential model based uncooled infrared focal plane array readout circuit, including: a first microbolometer unit and a second microbolometer unit, for obtaining a detection signal and a reference signal; a conversion unit, connected with the first and second microbolometer units, and configured for converting the detection signal and reference signal to obtain a linear detection signal and linear reference signal; a subtraction unit, connected with the conversion unit, and configured for calculating a difference between the detection signal and the reference ratio signal to obtain a difference signal; and an integration unit, connected to the subtraction unit, and configured for integrating the difference signal to obtain an electrical signal for characterizing the infrared light signal of the to-be-detected object.Type: GrantFiled: September 20, 2019Date of Patent: May 4, 2021Assignee: University of Electronic Science and Technology of ChinaInventors: Longcheng Que, Daogang Min, Kai Yang, Yi Zhang, Jian Lv, Yun Zhou, Yadong Jiang