Patents by Inventor Jiwei Chen
Jiwei Chen 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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Patent number: 11945995Abstract: Disclosed are a temporary plugging agent and a preparation method thereof, and a method for temporary plugging and fracturing of a high-temperature reservoir. The temporary plugging agent includes the following components in mass fractions: acrylamide 5%, composite crosslinking agent 1%, laponite 1%, ammonium persulfate 0.1% and water 92.9%.Type: GrantFiled: December 15, 2020Date of Patent: April 2, 2024Assignee: CHINA UNIVERSITY OF PETROLEUMInventors: Tiankui Guo, Yuelong Zhang, Zengbao Wang, Ning Qi, Mingliang Luo, Feipeng Wu, Ming Chen, Xiaoqiang Liu, Jiwei Wang, Xiaozhi Wang, Yuanzhi Gong
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Patent number: 11933598Abstract: A deviation detection method includes obtaining first and second images of first and second electrode sheets, respectively, of an electrode assembly during winding using first and second cameras. The method further includes determining whether the first and/or second camera is deviated according to a distance from a reference point in the first and/or second image to a specific position, which is a position of a same object appearing in the first image and the second image. The method also includes determining whether the electrode assembly is deviated according to a vertical distance from the reference point in the first image to a boundary of the first electrode sheet and a vertical distance from the reference point in the second image to a boundary of the second electrode sheet if the first camera and the second camera are not deviated.Type: GrantFiled: June 9, 2023Date of Patent: March 19, 2024Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Xuming Wang, Jiwei Chen, Yuanyuan Zhang
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Publication number: 20240070849Abstract: A spot-checking method for a visual inspection system includes obtaining a plurality of to-be-inspected images, inspecting the plurality of to-be-inspected images to obtain defect types and/or parameters of a target object in the plurality of to-be-inspected images, and confirming availability of the visual inspection system based on the defect types and/or the parameters.Type: ApplicationFiled: April 7, 2023Publication date: February 29, 2024Inventors: Qian WU, Jiwei CHEN, Guannan JIANG
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Publication number: 20240062422Abstract: The present application relates to a camera calibration method and apparatus, a computer device, a storage medium, and a program product. The method includes: obtaining a first operation instruction based on a camera calibration interface; determining, from configuration information, target configuration information matching the first operation instruction and set based on the camera calibration interface; and then executing a corresponding operation in a camera calibration process based on the first operation instruction and the target configuration information. However, the camera calibration process provided by embodiments of the present application is implemented based on the camera calibration interface, without switching back and forth between a plurality of tools, thereby making the camera calibration process less cumbersome.Type: ApplicationFiled: November 1, 2023Publication date: February 22, 2024Inventors: Qian Wu, Jiwei Chen, Guannan Jiang
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Publication number: 20240054770Abstract: A method and an apparatus for debugging an image detection algorithm, a device, a medium, and a program product are provided. The method includes: obtaining a debug file that includes image indication information of a plurality of images and algorithm indication information of the images; further, obtaining the images based on the image indication information of the images, and determining image detection algorithms corresponding to the images based on the algorithm indication information of the images; and further, separately executing the corresponding image detection algorithms for the images to obtain detection result information corresponding to the images. In embodiments of the present application, the images and the image detection algorithms corresponding to the images are obtained based on the debug file, and then the corresponding image detection algorithms are separately executed for the images to obtain the detection result information of the images.Type: ApplicationFiled: October 25, 2023Publication date: February 15, 2024Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Xianfeng XIE, Jiwei CHEN, Qian WU
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Publication number: 20240039031Abstract: A deviation detection method and a deviation detection device for detecting positional deviation of an electrode assembly during winding are provided. The method comprises: obtaining a plurality of first images and a plurality of second images by using a photographing unit during the winding process of the electrode assembly, where the first image includes a first electrode sheet, and the second image includes a second electrode sheet; matching a first image with a second image, where the first image and the second image contain the same or corresponding identification objects, and the identification objects are portions periodically formed on each winding layer of the electrode assembly; and determining whether the electrode assembly is deviated according to the boundary of the first electrode sheet in the first image and/or the boundary of the second electrode sheet in the second image in a group of matching first and second images.Type: ApplicationFiled: October 11, 2023Publication date: February 1, 2024Inventors: Jiwei Chen, Xuming Wang, Yuanyuan Zhang
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Publication number: 20240012401Abstract: A debugging method for production line devices may include: receiving control commands for a plurality of first devices in a production line, where respective control programs may be configured for the plurality of first devices; and calling the control programs for the plurality of first devices according to the control commands for the plurality of first devices respectively so as to debug the plurality of first devices.Type: ApplicationFiled: April 6, 2023Publication date: January 11, 2024Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Jiwei CHEN, Guannan JIANG
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Patent number: 11791721Abstract: An apparatus is disclosed for implementing a multi-mode direct-current (DC)-to-DC power converter. In an example aspect, the apparatus includes a DC-to-DC power converter with a flying capacitor, an inductor, and four switches. The inductor is coupled between a second node and a battery node. A first switch is coupled between a first node and a first terminal of the flying capacitor. A second switch is coupled between the first terminal and the second node. A third switch is coupled between a second terminal of the flying capacitor and the second node. A fourth switch is coupled between the second terminal and a ground node. The DC-to-DC power converter is configured to selectively transfer power from the first node to the battery node according to a first operational mode and transfer other power from the battery node to the first node according to a second operational mode.Type: GrantFiled: January 31, 2020Date of Patent: October 17, 2023Assignee: QUALCOMM IncorporatedInventors: Jiwei Chen, Guoyong Guo, Yue Jing
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Publication number: 20230314124Abstract: A deviation detection method includes obtaining first and second images of first and second electrode sheets, respectively, of an electrode assembly during winding using first and second cameras. The method further includes determining whether the first and/or second camera is deviated according to a distance from a reference point in the first and/or second image to a specific position, which is a position of a same object appearing in the first image and the second image. The method also includes determining whether the electrode assembly is deviated according to a vertical distance from the reference point in the first image to a boundary of the first electrode sheet and a vertical distance from the reference point in the second image to a boundary of the second electrode sheet if the first camera and the second camera are not deviated.Type: ApplicationFiled: June 9, 2023Publication date: October 5, 2023Inventors: Xuming WANG, Jiwei CHEN, Yuanyuan ZHANG
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Patent number: 11773045Abstract: Provided is a photo-oxidation reaction of benzylic C—H bonds of an aromatic compound under the catalysis of an acid catalyst. The method aims to synthesize aromatic acids and acetophenones. The acid catalyst is one of Bronsted acids, including one or a mixture of two or more selected from the group consisting of hydrochloric acid, phosphoric acid, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, and potassium hydrogen sulfate, as well as N-propylsulfonate pyridinium hydrogensulfate, N-butylsulfonate pyridinium hydrogensulfate, N-propylsulfonate pyridinium trifluoromethanesulfonate, N-butylsulfonate pyridinium trifluoromethanesulfonate, N-propylsulfonate pyridinium tetrafluoroborate, and N-butylsulfonate pyridinium tetrafluoroborate. The oxidation reaction is conducted under mild conditions (normal temperature and pressure) using air or oxygen as the oxidant in the presence of recyclable catalyst and solvent.Type: GrantFiled: January 19, 2022Date of Patent: October 3, 2023Assignee: NANJING TECH UNIVERSITYInventors: Yufeng Li, Hongjun Zhu, Hongfei Ma, Hongzhong Bu, Jieqing Wu, Jiefan Gu, Jiwei Chen, Haoyue Zhang, Chen Wang
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Publication number: 20230242470Abstract: Provided is a photo-oxidation reaction of benzylic C—H bonds of an aromatic compound under the catalysis of an acid catalyst. The method aims to synthesize aromatic acids and acetophenones. The acid catalyst is one of Bronsted acids, including one or a mixture of two or more selected from the group consisting of hydrochloric acid, phosphoric acid, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, and potassium hydrogen sulfate, as well as N-propylsulfonate pyridinium hydrogensulfate, N-butylsulfonate pyridinium hydrogensulfate, N-propylsulfonate pyridinium trifluoromethanesulfonate, N-butylsulfonate pyridinium trifluoromethanesulfonate, N-propylsulfonate pyridinium tetrafluoroborate, and N-butylsulfonate pyridinium tetrafluoroborate. The oxidation reaction is conducted under mild conditions (normal temperature and pressure) using air or oxygen as the oxidant in the presence of recyclable catalyst and solvent.Type: ApplicationFiled: January 19, 2022Publication date: August 3, 2023Inventors: Yufeng Li, Hongjun Zhu, Hongfei Ma, Hongzhong Bu, Jieqing Wu, Jiefan Gu, Jiwei Chen, Haoyue Zhang, Chen Wang
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Patent number: 11714328Abstract: Disclosed is a terminal, including: a display screen including a sensor area, the sensor area being a transparent display area on the display screen; a sensor disposed below the display screen, the sensor having a photosensitive portion; and a color-changing layer above the display screen, where the photosensitive portion of the sensor is within a first orthographic projection range of the sensor area, and the sensor area is within a second orthographic projection range of the color-changing layer; the transparent display area is transparent when the sensor is in operation; and the color-changing layer is configured to switch between a colorless state and a colored state.Type: GrantFiled: November 22, 2019Date of Patent: August 1, 2023Assignee: Beijing Xiaomi Mobile Software Co., Ltd.Inventors: Lintao Zhang, Wei Chen, Jiwei Chen, Jing Gao, Zhiwen Xu
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Patent number: 11606032Abstract: Certain aspects of the present disclosure generally relate to an adaptive combination power supply circuit. The adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor; a second transistor coupled to the first transistor via a first node; a third transistor coupled to the second transistor via a second node; a fourth transistor coupled to the third transistor via a third node; a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element having a first terminal coupled to the second node; and a switch having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.Type: GrantFiled: November 14, 2019Date of Patent: March 14, 2023Assignee: QUALCOMM incorporatedInventors: Chunping Song, Jiwei Chen, David King Wai Li
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Patent number: 11601051Abstract: Certain aspects of the present disclosure generally relate to a connection terminal pattern and layout for a three-level buck regulator. One example electronic module generally includes a substrate, an integrated circuit (IC) package disposed on the substrate and comprising transistors of a three-level buck regulator, a capacitive element of the three-level buck regulator disposed on the substrate, and an inductive element of the three-level buck regulator disposed on the substrate. In certain aspects, the capacitive element and the inductive element may be disposed adjacent to different sides of the IC package.Type: GrantFiled: June 18, 2019Date of Patent: March 7, 2023Assignee: QUALCOMM IncorporatedInventors: Chengyue Yu, Zhen Ning Low, Guoyong Guo, Jiwei Chen
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Patent number: 11280946Abstract: A polarizing sheet includes a base layer, and a polarizing layer attached to the base layer. The polarizing layer includes, in a same plane, a combination of any two or more of a first region, a second region, or a third region. The first region, the second region and the third region have different light transmission properties.Type: GrantFiled: August 29, 2019Date of Patent: March 22, 2022Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.Inventors: Wei Chen, Zhiwen Xu, Jiwei Chen
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Publication number: 20210242771Abstract: An apparatus is disclosed for implementing a multi-mode direct-current (DC)-to-DC power converter. In an example aspect, the apparatus includes a DC-to-DC power converter with a flying capacitor, an inductor, and four switches. The inductor is coupled between a second node and a battery node. A first switch is coupled between a first node and a first terminal of the flying capacitor. A second switch is coupled between the first terminal and the second node. A third switch is coupled between a second terminal of the flying capacitor and the second node. A fourth switch is coupled between the second terminal and a ground node. The DC-to-DC power converter is configured to selectively transfer power from the first node to the battery node according to a first operational mode and transfer other power from the battery node to the first node according to a second operational mode.Type: ApplicationFiled: January 31, 2020Publication date: August 5, 2021Inventors: Jiwei Chen, Guoyong Guo, Yue Jing
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Publication number: 20200403514Abstract: Certain aspects of the present disclosure generally relate to a connection terminal pattern and layout for a three-level buck regulator. One example electronic module generally includes a substrate, an integrated circuit (IC) package disposed on the substrate and comprising transistors of a three-level buck regulator, a capacitive element of the three-level buck regulator disposed on the substrate, and an inductive element of the three-level buck regulator disposed on the substrate. In certain aspects, the capacitive element and the inductive element may be disposed adjacent to different sides of the IC package.Type: ApplicationFiled: June 18, 2019Publication date: December 24, 2020Inventors: Chengyue YU, Zhen Ning LOW, Guoyong GUO, Jiwei CHEN
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Publication number: 20200310210Abstract: Disclosed is a terminal, including: a display screen including a sensor area, the sensor area being a transparent display area on the display screen; a sensor disposed below the display screen, the sensor having a photosensitive portion; and a color-changing layer above the display screen, where the photosensitive portion of the sensor is within a first orthographic projection range of the sensor area, and the sensor area is within a second orthographic projection range of the color-changing layer; the transparent display area is transparent when the sensor is in operation; and the color-changing layer is configured to switch between a colorless state and a colored state.Type: ApplicationFiled: November 22, 2019Publication date: October 1, 2020Applicant: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.Inventors: Lintao ZHANG, Wei CHEN, Jiwei CHEN, Jing GAO, Zhiwen XU
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Publication number: 20200225396Abstract: A polarizing sheet includes a base layer, and a polarizing layer attached to the base layer. The polarizing layer includes, in a same plane, a combination of any two or more of a first region, a second region, or a third region. The first region, the second region and the third region have different light transmission properties.Type: ApplicationFiled: August 29, 2019Publication date: July 16, 2020Applicant: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.Inventors: Wei CHEN, Zhiwen XU, Jiwei CHEN
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Publication number: 20200161976Abstract: Certain aspects of the present disclosure generally relate to an adaptive combination power supply circuit. The adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor; a second transistor coupled to the first transistor via a first node; a third transistor coupled to the second transistor via a second node; a fourth transistor coupled to the third transistor via a third node; a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element having a first terminal coupled to the second node; and a switch having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.Type: ApplicationFiled: November 14, 2019Publication date: May 21, 2020Inventors: Chunping SONG, Jiwei CHEN, David King Wai LI