Patents Assigned to Peking University Shenzhen Graduate School
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Publication number: 20180287997Abstract: The present disclosure relates generally to internet technology and more specifically to managing Top-level domain (TLD) name based on blockchain. An example method of managing Top-level domain name comprises the following steps: A. Using TLD nodes to form alliance network in the blockchain; B. Layering the system architecture in the alliance network to separate operations and data; and C. Reaching consensus among all nodes in the alliance network through consensus mechanism. A more effective and efficient consensus mechanism will increase the safety and reliability of the system and improve the efficiency of the system. Layering the system structure will ensure the efficiency and portability of the system.Type: ApplicationFiled: March 14, 2018Publication date: October 4, 2018Applicant: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Hui Li, Xiangui Wang, Zhili Lin, Jiangxing Wu, Xueming Si, Kedan Li, Xin Yang, Han Wang
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Patent number: 10089917Abstract: A photoelectric sensor and a display panel comprise: a pulse transmission unit comprising a control node, after obtaining a driving voltage, the control node of the pulse transmission unit transmitting first clock signals to a signal output terminal; a pulse control unit configured to receive scanning signals from a signal input terminal and charging the control node of the pulse transmission unit so as to provide the driving voltage; and photoelectric sensing unit configured to provide a leakage current in response to the intensity of external illumination when receiving the external illumination, the leakage current discharging the control node of the pulse transmission unit, so that the voltage at the control node of the pulse transmission unit is less than the driving voltage after a period of time.Type: GrantFiled: March 24, 2016Date of Patent: October 2, 2018Assignee: Peking University Shenzhen Graduate SchoolInventors: Shengdong Zhang, Congwei Liao, Zhijin Hu, Shijie Cao, Junmei Li, Wenjie Li
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Publication number: 20180248932Abstract: Disclosed are a method and apparatus for acquiring target data from and sending target data to a network. An NDN network and a TCP/IP network are simultaneously contained as a network layer protocol, and the NDN network is used to perform interaction of control information and searching of target data, while the TCP/IP network is used to perform specific transmission of the target data. Not only are intelligent and efficient content distribution advantages of the NDN network made use of, but also, by means of the efficient transmission capability of the TCP/IP network in an existing network device and communication environment, the content distribution capability in a hybrid network simultaneously having the TCP/IP network and the NDN network is improved.Type: ApplicationFiled: January 26, 2016Publication date: August 30, 2018Applicant: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Kai LEI, Jie YUAN, Yunbo XUN, Xiang ZHANG, Lirui GONG
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Publication number: 20180240217Abstract: An image representation method and processing device based on local PCA whitening. A first mapping module maps words and characteristics to a high-dimension space. A principal component analysis module conducts principal component analysis in each corresponding word space, to obtain a projection matrix. A VLAD computation module computes a VLAD image representation vector; a second mapping module maps the VLAD image representation vector to the high-dimension space. A projection transformation module conducts projection transformation on the VLAD image representation vector obtained by means of projection. A normalization processing module conducts normalization on characteristics obtained by means of projection transformation, to obtain a final image representation vector.Type: ApplicationFiled: September 15, 2015Publication date: August 23, 2018Applicant: Peking University Shenzhen Graduate SchoolInventors: Wenmin Wang, Mingmin Zhen, Ronggang Wang, Ge Li, Shengfu Dong, Zhenyu Wang, Ying Li, Wen Gao
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Patent number: 9983054Abstract: An ultraviolet light sensing circuit and sensing system. The ultraviolet light sensing circuit comprises a modulation unit and a phase delay unit, wherein the modulation unit comprises a first stage of inverter which is used for sensing ultraviolet light and is used as a voltage feedback modulation stage; and the phase delay unit comprises N stages of inverters which are connected in sequence, where N is an even number which is greater than or equal to 2. The modulation unit is connected to the phase delay unit in sequence, and the output voltage of the phase delay unit is fed to the modulation unit; and the modulation unit is modulated by a control signal which is a pulse signal. The ultraviolet light sensing circuit and sensing system can be used for ultraviolet light information communications. The ultraviolet light sensing circuit can sense ultraviolet light signals and output amplitude modulation wave signals.Type: GrantFiled: November 14, 2014Date of Patent: May 29, 2018Assignee: Peking University Shenzhen Graduate SchoolInventors: Shengdong Zhang, Congwei Liao, Zhijin Hu, Wenjie Li, Junmei Li
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Patent number: 9986255Abstract: A method for video encoding based on an image super-resolution, the method including: 1) performing super-resolution interpolation on a video image to be encoded using a pre-trained texture dictionary database to yield a reference image; in which the texture dictionary database includes: one or multiple dictionary bases, and each dictionary basis includes a mapping group formed by a relatively high resolution image block of a training image and a relatively low resolution image block corresponding to the relatively high resolution image block; 2) performing motion estimation and motion compensation of image blocks of the video image on the reference image to acquire prediction blocks corresponding to the image blocks of the video image; 3) performing subtraction between the image blocks of the video image and the corresponding prediction blocks to yield prediction residual blocks, respectively; and 4) encoding the prediction residual blocks.Type: GrantFiled: March 4, 2016Date of Patent: May 29, 2018Assignee: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Ronggang Wang, Yang Zhao, Zhenyu Wang, Wen Gao, Wenmin Wang, Shengfu Dong, Tiejun Huang, Siwei Ma
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Patent number: 9961142Abstract: A method, device and system disclosed used in storage technique, comprising: splitting a file of size M into k blocks, that is to say, each block is of size M/k; issuing the above k blocks across k different storage nodes in the distributed network storage system in a distributed manner; using the k blocks, constructing n?k independent blocks via linear coding method, and satisfying the property that any k of the n encoded blocks can be used to reconstruct the original data in the file, which means the linear coding method is a kind of Maximum-Distance Separable (MDS) code; distribute the n?k encoded blocks to the rest n?k different storage codes in the distributed network storage systems.Type: GrantFiled: February 15, 2012Date of Patent: May 1, 2018Assignees: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOL, SHENZHEN IPTV CO., LTD.Inventors: Hui Li, Xianxia Huang, Hanxu Hou, Tai Zhou, Bing Zhu, Changmin Chen, Jingbang Zhou
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Patent number: 9886050Abstract: An adaptive voltage source, comprising a signal output end, and a reference resistance forming circuit and a sensing module connected in series between a voltage source and a low power level; the sensing module comprises a sensing end coupled to a transistor to be sensed to sense the threshold voltage drift of the transistor to be sensed in a device circuit; the equivalent resistance of the sensing module increases with the increase of the sensed threshold voltage drift; and the signal output end is coupled to a first node coupled to the reference resistance forming circuit and the sensing module, and is used to output adaptive voltage. The output adaptive voltage is adjusted via the threshold voltage drift sensed by the sensing module. Based on the circuit, also disclosed are a shift register and unit thereof, and display.Type: GrantFiled: November 14, 2014Date of Patent: February 6, 2018Assignee: Peking University Shenzhen Graduate SchoolInventors: Shengdong Zhang, Congwei Liao, Zhijin Hu, Wenjie Li, Junmei Li
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Publication number: 20180033365Abstract: A display device and a pixel circuit thereof. The pixel circuit generates threshold voltage information of a driving transistor (21) in a source following manner, a threshold voltage of the driving transistor (21) and a reference voltage related to gray scale information are generated at two ends of a first capacitor (26) by means of voltage division of the first capacitor (26) and a second capacitor (27), and the reference voltage keeps unchanged during a light-emitting process, so that a driving current flowing through a light-emitting device (25) is irrelevant to threshold voltages of the driving transistor (21) and the light-emitting device (25), thereby compensating the threshold voltage deviation of the driving transistor (21) and the light-emitting device (25), and solving the problem of nonuniform display.Type: ApplicationFiled: March 17, 2016Publication date: February 1, 2018Applicant: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Shengdong ZHANG, Cuicui WANG, Chuanli LENG
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Patent number: 9838663Abstract: A virtual viewpoint synthesis method and system, including: establishing a left viewpoint virtual view and a right viewpoint virtual view; searching for a candidate pixel in a reference view, and marking a pixel block in which the candidate pixel is not found as a hole point; ranking the found candidate pixels according to depth, and successively calculating a foreground coefficient and a background coefficient for performing weighted summation; enlarging the hole-point regions of the left viewpoint virtual view and/or the right viewpoint virtual view in the direction of the background to remove a ghost pixel; performing viewpoint synthesis on the left viewpoint virtual view and the right viewpoint virtual view; and filling the hole-points of a composite image.Type: GrantFiled: January 29, 2016Date of Patent: December 5, 2017Assignee: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Chenxia Li, Ronggang Wang, Wen Gao
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Patent number: 9793351Abstract: A tunneling field effect transistor, comprising a gate electrode layer, a gate dielectric layer, a source region, a connected region and a drain region, wherein the source region comprises a first source region and a second source region, the second source region comprising an inner layer source region and an outer layer source region. The connected region comprises an expansion region and a high-resistance region. The doping types of materials of the inner layer source and the outer layer source region are opposite, and the forbidden bandwidth of the material of the inner layer source region is less than that of the outer layer source region. The contact surface formed by way of covering the inner layer source region by the outer layer source region is a curved surface.Type: GrantFiled: September 1, 2014Date of Patent: October 17, 2017Assignee: Peking University Shenzhen Graduate SchoolInventors: Haijun Lou, Xinnan Lin, Dan Li, Jin He
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Patent number: 9782406Abstract: Disclosed is a compound of (aminophenylamino) pyrimidyl benzamides and a synthesis method thereof. The compound has Btk-inhibition activity and can be used to treat autoimmune diseases, heteroimmune diseases, cancers or thromboembolic diseases.Type: GrantFiled: August 19, 2015Date of Patent: October 10, 2017Assignees: Peking University Shenzhen Graduate School, Beijing Reciprocapharmaceuticals Co., Ltd.Inventors: Zhengying Pan, Xitao Li
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Patent number: 9779662Abstract: A pixel circuit, a drive method based on the pixel circuit, and a display device. The pixel circuit comprises: a first capacitor (C1), a second capacitor (C2), a second transistor (T2), a third transistor (T3) and a light-emitting branch for being coupled between a first common electrode (VDD) and a second common electrode (VSS); wherein the light-emitting branch comprises a first transistor (T1), a fourth transistor (T4) and a light-emitting element (OLED) which are connected in series; a first electrode of the first transistor (T1) is coupled to a second electrode of the fourth transistor (T4), and a coupling node is a third node (C); and a control electrode of the fourth transistor (T4) is used for inputting a second scanning control signal (VEM), and the fourth transistor (T4) switches the ON/OFF state of the light-emitting branch in response to the second scanning control signal (VEM).Type: GrantFiled: November 7, 2014Date of Patent: October 3, 2017Assignee: Peking University Shenzhen Graduate SchoolInventors: Shengdong Zhang, Cuicui Wang, Chuanli Leng, Longyan Wang
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Publication number: 20170270862Abstract: A pixel circuit, a drive method based on the pixel circuit, and a display device. The pixel circuit comprises: a first capacitor (C1), a second capacitor (C2), a second transistor (T2), a third transistor (T3) and a light-emitting branch for being coupled between a first common electrode (VDD) and a second common electrode (VSS); wherein the light-emitting branch comprises a first transistor (T1), a fourth transistor (T4) and a light-emitting element (OLED) which are connected in series; a first electrode of the first transistor (T1) is coupled to a second electrode of the fourth transistor (T4), and a coupling node is a third node (C); and a control electrode of the fourth transistor (T4) is used for inputting a second scanning control signal (VEM), and the fourth transistor (T4) switches the ON/OFF state of the light-emitting branch in response to the second scanning control signal (VEM).Type: ApplicationFiled: November 7, 2014Publication date: September 21, 2017Applicant: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Shengdong ZHANG, Cuicui WANG, Chuanli LENG, Longyan WANG
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Patent number: 9722637Abstract: This invention gives a coding method of MBR (Minimum Bandwidth Regenerating) codes. The related method includes the following steps: equally divide the original file of size B into k(k+1)/2 blocks, obtaining the first packets; construct a symmetrical k×k system matrix S with these first packets; generate k ID codes, wherein each ID code contains k elements; obtain the coded packet through operations between one column of the system matrix and the ID code; repeat the above steps with (n?k) different columns of the system matrix separately to get the (n?k) coded packets; construct the (n?k)×k check matrix P with the column number g which is the serial number of the ID codes in the coded packet set Pg; store the rows of the system matrix and coded matrix to n nodes, each node stores one row. The present invention also involves a method to repair the failed nodes of the above coding scheme.Type: GrantFiled: March 26, 2013Date of Patent: August 1, 2017Assignees: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Hui Li, Hanxu Hou, Bing Zhu
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Publication number: 20170213500Abstract: A controllable voltage source, comprising a control module (1), a storage module (2) and an output module (3); the control module (1) is coupled between a high level end and a low level end; the storage module (2) comprises a storage capacitor; two ends of the storage capacitor are respectively coupled to the control module (1) to form a first terminal and a second terminal; the output module (3) is coupled to the second terminal, and the signal output end thereof is used to output to an external circuit the voltage signal of the controllable voltage source; the control module (1) responds the effective level of a first clock signal so as to enable the first terminal to be coupled to the high level end, and the first terminal is charged from the high level end; the control module (1) responds the effective level of a second clock signal so as to enable the second terminal to be coupled to the high level end, and the second terminal is charged from the high level end; and the first terminal is coupled to the lType: ApplicationFiled: November 14, 2014Publication date: July 27, 2017Applicant: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Shengdong ZHANG, Congwei LIAO, Zhijin HU, Wenjie LI, Junmei LI
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Publication number: 20170200258Abstract: A super-resolution image reconstruction apparatus based on a classified dictionary database. The apparatus can select, from a training image, a first local block and a corresponding second down-sampled local block, extract corresponding features and combine the features into a dictionary group, and perform classification and pre-training on multiple dictionary groups by using calculated values of an LBS and an SES as classification marks, so as to obtain a classified dictionary database of multiple dictionary groups with classification marks. During image reconstruction, local features of a local block on an image to be reconstructed are extracted, the LBS and SES classification of the local block is matched with the LBS and SES classification of each dictionary in the classified dictionary database, so that matched dictionaries can be rapidly obtained, and lastly, image reconstruction is performed on the image to be reconstructed by using the matched dictionaries.Type: ApplicationFiled: May 28, 2014Publication date: July 13, 2017Applicant: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Yang ZHAO, Ronggang WANG, Zhenyu WANG, Wen GAO, Wenmin WANG, Shengfu DONG, Tiejun HUANG, Siwei MA
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Publication number: 20170193635Abstract: A method and apparatus for rapidly reconstructing a super-resolution image. In the method and apparatus for rapidly reconstructing a super-resolution image provided in the present application, an original image is processed at least by means of iterative backward mapping based on a texture structural constraint during reconstruction of a super-resolution image of the original image, so as to enhance texture details of the image, thereby improving the high-frequency detail quality of the super-resolution image.Type: ApplicationFiled: May 28, 2014Publication date: July 6, 2017Applicant: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Yang ZHAO, Ronggang WANG, Zhenyu WANG, Wen GAO, Wenmin WANG, Shengfu DONG, Tiejun HUANG, Siwei MA
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Patent number: 9679771Abstract: Design and fabrication methods to reduce the effect of edge-placement errors in the cut-hole patterning process are invented using selective etching and dual-material self-aligned multiple patterning processes. The invented methods consist of a series of processing steps to decompose the original cut-hole mask into multiple separate masks, pattern the cut holes on the resist to expose certain targeted lines, and selectively etch the exposed targeted lines (formed by dual-material self-aligned multiple patterning processes) without attacking the non-target lines. This invention provides production-worthy methods for the semiconductor industry to continue IC scaling down to sub-10 nm half pitch.Type: GrantFiled: March 7, 2016Date of Patent: June 13, 2017Assignee: Peking University Shenzhen Graduate SchoolInventor: Yijian Chen
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Patent number: 9647698Abstract: The invention relates to a method for encoding MSR (Minimum-storage Regenerating) codes, which comprises the following steps of: acquiring n first data packets which are represented by Si, i=1, 2, . . . , n; setting n storage nodes and a positive integer k, wherein n=2K; respectively adding a specified number of 0 bits on data heads or data tails of subsequent successive k first data packets by taking the next first data packet of the ith first data packet as a starting point, acquiring k second data packets, and acquiring an encoded data packet by computing the k second data packets; repeating the above steps and acquiring n encoded data packets which are represented by Pi, i=1, 2, . . . , n; and storing the ith first data packet and the encoded data packet acquired by taking the next first data packet of the first data packet as the starting point into the ith storage node.Type: GrantFiled: February 26, 2013Date of Patent: May 9, 2017Assignees: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Hui Li, Hanxu Hou, Bing Zhu