Patents by Inventor Zhiwu Zhang
Zhiwu Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240134501Abstract: Embodiments of the present invention relates to a prompt method and apparatus based on document sharing, a device, and a medium. The method comprises: receiving a display trigger operation of displaying a first document in a browser; sending attribute information of the first document to a server, the server being used for comparing the attribute information of the first document with attribute information of a second document, and sending preset prompt information to the browser when determining, according to a comparison result, that a prompt condition is satisfied, and the second document being a shared document that is actively shared by a meeting client in a real-time meeting interface; and receiving the preset prompt information, and displaying the preset prompt information while displaying the first document in the browser.Type: ApplicationFiled: December 26, 2023Publication date: April 25, 2024Inventors: Shuang ZHANG, Zhiwu HU, Yibin GAO
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Patent number: 11944784Abstract: Disclosed herein are combined devices and methods of manufacturing such combined devices. The combined devices disclosed herein include an analyte sensor including a sensor probe; an infusion set hub including a cannula; and a flexible base. The analyte sensor and infusion set hub are attached to the flexible base such that movement of one of the analyte sensor and the infusion set hub is substantially not transferred to the other one of the analyte sensor and the infusion set hub.Type: GrantFiled: November 18, 2019Date of Patent: April 2, 2024Assignee: Medtronic Minimed, Inc.Inventors: Guangping Zhang, Kiem H. Dang, Valerie Chen, Ling Jiang, Evan Anselmo, Zhiwu Fang, Sarnath Chattaraj
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Publication number: 20240097615Abstract: A photovoltaic power generation system includes a single-stage inverter, an anti-backflow circuit, a photovoltaic string, and a coupling capacitor. The anti-backflow circuit is connected to one input end of the single-stage inverter, one output end of the photovoltaic string is connected to the other input end of the single-stage inverter, and the other output end of the photovoltaic string is connected to the anti-backflow circuit. The photovoltaic string includes a buck optimizer and a photovoltaic panel. The anti-backflow circuit is configured to prevent a backflow current from flowing back to the photovoltaic string. The coupling capacitor is connected in parallel to two ends of the anti-backflow circuit and is configured to transmit a signal between each buck optimizer in the photovoltaic string and the single-stage inverter, to control backflow of the backflow current when the anti-backflow circuit fails.Type: ApplicationFiled: November 28, 2023Publication date: March 21, 2024Applicant: Huawei Digital Power Technologies Co., Ltd.Inventors: Yanzhong ZHANG, Zhiwu XU, Chongyue HUANG
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Patent number: 11555893Abstract: Disclosed are a laser scanning device, a radar device, and a scanning method thereof. The laser scanning device comprises a scanning prism comprising a plurality of scanning mirror surfaces, wherein the plurality of scanning mirror surfaces rotates about a scanning axis, a normal of each of the scanning mirror surfaces forms a certain angle with respect to the scanning axis, and the angles thereof are not all the same; a transceiving component comprising a laser transmitting unit and a laser receiving unit, wherein the laser transmitting unit generates a scanning line by rotation of the scanning mirror surfaces, and the same laser transmitting unit generates a plurality of scanning lines by rotation of the scanning prism.Type: GrantFiled: April 18, 2018Date of Patent: January 17, 2023Assignees: HEFEI SURESTAR TECHNOLOGY CO., LTD., BEIJING SURESTAR TECHNOLOGY CO., LTD.Inventor: Zhiwu Zhang
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Publication number: 20210088630Abstract: Disclosed are a laser scanning device, a radar device, and a scanning method thereof. The laser scanning device comprises a scanning prism comprising a plurality of scanning mirror surfaces, wherein the plurality of scanning mirror surfaces rotates about a scanning axis, a normal of each of the scanning mirror surfaces forms a certain angle with respect to the scanning axis, and the angles thereof are not all the same; a transceiving component comprising a laser transmitting unit and a laser receiving unit, wherein the laser transmitting unit generates a scanning line by rotation of the scanning mirror surfaces, and the same laser transmitting unit generates a plurality of scanning lines by rotation of the scanning prism.Type: ApplicationFiled: April 18, 2018Publication date: March 25, 2021Inventor: Zhiwu ZHANG
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Publication number: 20200326413Abstract: Disclosed are a laser scanning device, a radar device, and a scanning method thereof. The laser scanning device comprises a scanning prism comprising a plurality of scanning mirror surfaces, wherein the plurality of scanning mirror surfaces rotates about a scanning axis, a normal of each of the scanning mirror surfaces forms a certain angle with respect to the scanning axis, and the angles thereof are not all the same; a transceiving component comprising a laser transmitting unit and a laser receiving unit, wherein the laser transmitting unit generates a scanning line by rotation of the scanning mirror surfaces, and the same laser transmitting unit generates a plurality of scanning lines by rotation of the scanning prism.Type: ApplicationFiled: April 18, 2018Publication date: October 15, 2020Inventor: Zhiwu ZHANG
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Patent number: 10786241Abstract: The present disclosure discloses a knot-tying device and a knot-tying system with the knot-tying device. The knot-tying device comprises a shear knife provided at a front end of a driving rod. Hilts of the shear knife (18) are opened by an elastic member, and the hilts are pressed by the driving rod to close and cut a suture. The shear knife is used as a substitute for a cutter in the related art, and is driven to close by the driving rod so as to realize a shearing function. When the suture is cut off by the shear knife, a requirement for sharpness of blades are greatly reduced, and the blades are able to be realized by a common processing method, thereby greatly reducing cost while ensuring reliability. In addition, abrasion on the blades from the suture is reduced, thereby greatly prolonging the service life of the product.Type: GrantFiled: October 31, 2016Date of Patent: September 29, 2020Assignee: BEIJING MED ZENITH MEDICAL SCIENTIFIC CO., LTD.Inventors: Jian Meng, Baoqi Xie, Zhiwei Ma, Zhiwu Zhang, Shengbo Dou, Xiaojun Zhou, Kang Wu, Danian Ke
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Publication number: 20200033450Abstract: The present invention relates to a LiDAR device and a channel gating method, comprises: a laser emitting device having N semiconductor lasers arranged in an emission array for emitting N emergent light beams; an emission lens group for adjusting angles of the N emergent light beams; a receiving lens group for adjusting an angle of incident light; and a laser receiving device having N photoelectric sensors arranged in a receiving array for receiving incident light adjusted by the receiving lens group. The position of the N semiconductor lasers in the emission array is equal to that of the N photoelectric sensors in the receiving array, the emission lens group and the receiving lens group have corresponding optical paths, and the emergent light from the N semiconductor lasers is reflected off a target and is then incident on the N photoelectric sensors.Type: ApplicationFiled: September 30, 2019Publication date: January 30, 2020Inventor: Zhiwu Zhang
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Publication number: 20190374216Abstract: The present disclosure discloses a knot-tying device and a knot-tying system with the knot-tying device. The knot-tying device comprises a shear knife provided at a front end of a driving rod. Hilts of the shear knife (18) are opened by an elastic member, and the hilts are pressed by the driving rod to close and cut a suture. The shear knife is used as a substitute for a cutter in the related art, and is driven to close by the driving rod so as to realize a shearing function. When the suture is cut off by the shear knife, a requirement for sharpness of blades are greatly reduced, and the blades are able to be realized by a common processing method, thereby greatly reducing cost while ensuring reliability. In addition, abrasion on the blades from the suture is reduced, thereby greatly prolonging the service life of the product.Type: ApplicationFiled: October 31, 2016Publication date: December 12, 2019Inventors: Jian MENG, Baoqi XIE, Zhiwei MA, Zhiwu ZHANG, Shengbo DOU, Xiaojun ZHOU, Kang WU, Danian KE
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Patent number: 10024524Abstract: The present invention relates to an easy-maintaining LED lamp comprising a lamp body, on which is disposed a mounting frame, wherein the mounting frame comprises two supporting frames, which are respectively connected to the corresponding two ends of the lamp body, wherein a mounting plate is disposed at the upper end of the mounting frame, wherein a plurality of locking holes is disposed on the mounting plate, wherein at least two joint holes are disposed at intervals on the supporting frame, wherein a locking piece extending toward the inner side is disposed in the joint hole, wherein two cover plates are respectively disposed at the two ends of the lamp body, wherein a plurality of fasteners, which is connected to the corresponding locking piece, is disposed at the outer side of one cover plate.Type: GrantFiled: November 4, 2016Date of Patent: July 17, 2018Assignee: Shenzhen OKT Lighting Co., Ltd.Inventor: Zhiwu Zhang
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Publication number: 20180128456Abstract: The present invention relates to an easy-maintaining LED lamp comprising a lamp body, on which is disposed a mounting frame, wherein the mounting frame comprises two supporting frames, which are respectively connected to the corresponding two ends of the lamp body, wherein a mounting plate is disposed at the upper end of the mounting frame, wherein a plurality of locking holes is disposed on the mounting plate, wherein at least two joint holes are disposed at intervals on the supporting frame, wherein a locking piece extending toward the inner side is disposed in the joint hole, wherein two cover plates are respectively disposed at the two ends of the lamp body, wherein a plurality of fasteners, which is connected to the corresponding locking piece, is disposed at the outer side of one cover plate.Type: ApplicationFiled: November 4, 2016Publication date: May 10, 2018Inventor: Zhiwu Zhang
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Publication number: 20160006908Abstract: A molded camera suitable for use on a vehicle to capture an image of a field-of-view about the vehicle includes a circuit board assembly, a pigtail connector, an imager device, a lens assembly, and a polymeric compound. The pigtail connector is attached to the circuit board assembly. The imager device is attached to the circuit board assembly. The lens assembly is configured to focus the image of the field-of-view about the vehicle on the imager device. The polymeric compound is configured to encapsulate the circuit board assembly, seal/protect the molded camera and define an external portion of an exterior surface of the molded camera.Type: ApplicationFiled: July 3, 2014Publication date: January 7, 2016Inventors: BINGHUA PAN, YEW KWANG LOW, SIM YING YONG, LAY BOON ONG, ZHIWU ZHANG
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Publication number: 20080095413Abstract: A method of analyzing and recognizing fingerprint images that utilizes vector processing of a vector field that is defined as the tangential vector of the fingerprint ridge curves is disclosed. The raw fingerprint image is divided into blocks, filtered to remove noise, and the orientation direction of each block is found. This allows the ridge curves to be enhanced and approximated by piece-wise linear approximations. The piece-wise linear approximations to the ridge curves allow the minutiae to be extracted and classified and a fingerprint minutiae template to be constructed. An enrollment process gathers multiple fingerprint images, creates fingerprint minutiae templates corresponding to the acquired fingerprint images, and stores the templates and other data associated with the respective individual or the enrolled fingerprint in a fingerprint database.Type: ApplicationFiled: December 19, 2006Publication date: April 24, 2008Applicant: Geometric Informatics, Inc.Inventors: Shing-Tung Yau, Xianfeng Gu, Zhiwu Zhang
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Publication number: 20050157913Abstract: A method of analyzing and recognizing fingerprint images that utilizes vector processing of a vector field that is defined as the tangential vector of the fingerprint ridge curves is disclosed. The raw fingerprint image is divided into blocks, filtered to remove noise, and the orientation direction of each block is found. This allows the ridge curves to be enhanced and approximated by piece-wise linear approximations. The piece-wise linear approximations to the ridge curves allow the minutiae to be extracted and classified and a fingerprint minutiae template to be constructed. An enrollment process gathers multiple fingerprint images, creates fingerprint minutiae templates corresponding to the acquired fingerprint images, and stores the templates and other data associated with the respective individual or the enrolled fingerprint in a fingerprint database.Type: ApplicationFiled: March 16, 2005Publication date: July 21, 2005Inventors: Shing-Tung Yau, Xianfeng Gu, Zhiwu Zhang
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Patent number: 6876757Abstract: A method of analyzing and recognizing fingerprint images that utilizes vector processing of a vector field that is defined as the tangential vector of the fingerprint ridge curves is disclosed. The raw fingerprint image is divided into blocks, filtered to remove noise, and the orientation direction of each block is found. This allows the ridge curves to be enhanced and approximated by piece-wise linear approximations. The piece-wise linear approximations to the ridge curves allow the minutiae to be extracted and classified and a fingerprint minutiae template to be constructed. An enrollment process gathers multiple fingerprint images, creates fingerprint minutiae templates corresponding to the acquired fingerprint images, and stores the templates and other data associated with the respective individual or the enrolled fingerprint in a fingerprint database.Type: GrantFiled: May 28, 2002Date of Patent: April 5, 2005Assignee: Geometric Informatics, Inc.Inventors: Shing-Tung Yau, Xianfeng Gu, Zhiwu Zhang
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Publication number: 20030039382Abstract: A method of analyzing and recognizing fingerprint images that utilizes vector processing of a vector field that is defined as the tangential vector of the fingerprint ridge curves is disclosed. The raw fingerprint image is divided into blocks, filtered to remove noise, and the orientation direction of each block is found. This allows the ridge curves to be enhanced and approximated by piece-wise linear approximations. The piece-wise linear approximations to the ridge curves allow the minutiae to be extracted and classified and a fingerprint minutiae template to be constructed. An enrollment process gathers multiple fingerprint images, creates fingerprint minutiae templates corresponding to the acquired fingerprint images, and stores the templates and other data associated with the respective individual or the enrolled fingerprint in a fingerprint database.Type: ApplicationFiled: May 28, 2002Publication date: February 27, 2003Applicant: Biometric Informatics Technolgy, Inc.Inventors: Shing-Tung Yau, Xianfeng Gu, Zhiwu Zhang