Patents by Inventor Zhi Qu
Zhi Qu 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: 11961278Abstract: A method for detecting an occluded image. The method includes: after an image is captured by a camera, obtaining the image as an image to be detected; inputting the image to be detected into a trained occluded-image detection model, the occluded-image detection model is trained based on original occluded images and non-occluded images by using a trained data feature augmentation network; determining whether the image to be detected is an occluded image based on the occluded-image detection model; and outputting an image detection result.Type: GrantFiled: May 31, 2021Date of Patent: April 16, 2024Assignee: BEIJING XIAOMI PINECONE ELECTRONICS CO., LTD.Inventors: Ruoyu Liu, Zhi Qu, Yasen Zhang, Yan Song, Zhipeng Ge
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Publication number: 20230361697Abstract: A control unit for a brushless DC motor of a power tool having a rotor and a stator is provided. The control unit detects an initial position of the rotor, commutates the motor beginning at the initial position of the rotor using a low-speed motor commutation scheme until an output speed of the rotor exceeds a speed threshold, and commutates the motor based on a back-electromotive force (back-EMF) voltage of the motor after the output speed of the rotor exceeds the speed threshold. In the low-speed commutation scheme, the control unit applies a first set of voltage pulses to a present sector and a second set of voltage pulses to a next sector, and detects a transition of the rotor from the present sector to the next sector based on motor current measurements associated with the first set of voltage pulses and the second set of voltage pulses.Type: ApplicationFiled: July 14, 2023Publication date: November 9, 2023Applicant: Black & Decker Inc.Inventors: Shailesh P. WAIKAR, Zhi QU, Wing LIN, John C. VANKO
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Patent number: 11750124Abstract: A control unit for a brushless DC motor of a power tool having a rotor and a stator is provided. The control unit detects an initial position of the rotor, commutates the motor beginning at the initial position of the rotor using a low-speed motor commutation scheme until an output speed of the rotor exceeds a speed threshold, and commutates the motor based on a back-electromotive force (back-EMF) voltage of the motor after the output speed of the rotor exceeds the speed threshold. In the low-speed commutation scheme, the control unit applies a first set of voltage pulses to a present sector and a second set of voltage pulses to a next sector, and detects a transition of the rotor from the present sector to the next sector based on motor current measurements associated with the first set of voltage pulses and the second set of voltage pulses.Type: GrantFiled: June 22, 2022Date of Patent: September 5, 2023Assignee: Black & Decker Inc.Inventors: Shailesh P. Waikar, Zhi Qu, Wing Lin, John C. Vanko
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Publication number: 20230244937Abstract: A method is provided, including: storing comments generated in response to a content item served over a network; analyzing the comments to determine features associated with each of the comments; using a scoring model to score each comment based on the comment's corresponding features; receiving a request to serve a subset of the comments; responsive to the request, selecting a ranking of the comments that is one permutation from possible rankings of the comments, wherein selecting the ranking is in accordance with a probability distribution of the possible rankings that is based on the scores of the comments; serving comments identified by the selected ranking over the network to a client device; determining a dwell time on the served comments; applying the dwell time to update the scoring model.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Inventors: Kapil Thadani, Akshay Soni, Parikshit Shah, Troy Chevalier, Sreekanth Ramakrishnan, Aaron Nagao, Zhi Qu
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Patent number: 11625599Abstract: A method is provided, including: storing comments generated in response to a content item served over a network; analyzing the comments to determine features associated with each of the comments; using a scoring model to score each comment based on the comment's corresponding features; receiving a request to serve a subset of the comments; responsive to the request, selecting a ranking of the comments that is one permutation from possible rankings of the comments, wherein selecting the ranking is in accordance with a probability distribution of the possible rankings that is based on the scores of the comments; serving comments identified by the selected ranking over the network to a client device; determining a dwell time on the served comments; applying the dwell time to update the scoring model.Type: GrantFiled: June 19, 2019Date of Patent: April 11, 2023Assignee: YAHOO ASSETS LLCInventors: Kapil Thadani, Akshay Soni, Parikshit Shah, Troy Chevalier, Sreekanth Ramakrishnan, Aaron Nagao, Zhi Qu
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Patent number: 11551465Abstract: A method for detecting a finger occlusion image includes: N first original occlusion images and M first non-occlusion images are acquired, and first training data set is generated based on first original occlusion images and first non-occlusion images; first training is performed, based on first training data set, on neural network model for detection of finger occlusion image; L second original occlusion images and K second non-occlusion images are acquired, and second training data set is generated based on second original occlusion images and second non-occlusion images; linear classifier in neural network model having completed first training is replaced with iterative training module to form finger occlusion image detection model; second training is performed on finger occlusion image detection model based on second training data set; image to be detected is input into trained finger occlusion image detection model, to determine whether image to be detected is finger occlusion image.Type: GrantFiled: March 30, 2021Date of Patent: January 10, 2023Assignee: Beijing Xiaomi Pinecone Electronics Co., Ltd.Inventors: Zhi Qu, Yasen Zhang, Yan Song, Zhipeng Ge, Ruoyu Liu
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Publication number: 20220329180Abstract: A control unit for a brushless DC motor of a power tool having a rotor and a stator is provided. The control unit detects an initial position of the rotor, commutates the motor beginning at the initial position of the rotor using a low-speed motor commutation scheme until an output speed of the rotor exceeds a speed threshold, and commutates the motor based on a back-electromotive force (back-EMF) voltage of the motor after the output speed of the rotor exceeds the speed threshold. In the low-speed commutation scheme, the control unit applies a first set of voltage pulses to a present sector and a second set of voltage pulses to a next sector, and detects a transition of the rotor from the present sector to the next sector based on motor current measurements associated with the first set of voltage pulses and the second set of voltage pulses.Type: ApplicationFiled: June 22, 2022Publication date: October 13, 2022Inventors: Shailesh P. WAIKAR, Zhi QU, Wing LIN, John C. VANKO
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Publication number: 20220299567Abstract: Embodiments of the disclosure provide a method and device for testing an integrated circuit (IC). Calibration parameters of test boards are determined respectively by acquiring identification information of the test boards, and then each of to-be-tested devices in each of the test boards is tested respectively based on the calibration parameters of the test boards. According to the embodiments of the disclosure, the calibration parameters of the test boards are determined respectively according to the identification information corresponding to the test boards, therefore when different types of test boards are adopted by a test machine, each type of test boards may acquire the accurate calibration parameter, so that the accuracy of a test result is ensured, the mixed test of multiple types of test boards is implemented, furthermore, the test efficiency is improved and the test cost is reduced.Type: ApplicationFiled: September 28, 2021Publication date: September 22, 2022Inventor: Zhi Qu
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Publication number: 20220101028Abstract: A method for detecting an occluded image. The method includes: after an image is captured by a camera, obtaining the image as an image to be detected; inputting the image to be detected into a trained occluded-image detection model, the occluded-image detection model is trained based on original occluded images and non-occluded images by using a trained data feature augmentation network; determining whether the image to be detected is an occluded image based on the occluded-image detection model; and outputting an image detection result.Type: ApplicationFiled: May 31, 2021Publication date: March 31, 2022Inventors: Ruoyu LIU, Zhi QU, Yasen ZHANG, Yan SONG, Zhipeng GE
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Publication number: 20210406532Abstract: A method for detecting a finger occlusion image includes: N first original occlusion images and M first non-occlusion images are acquired, and first training data set is generated based on first original occlusion images and first non-occlusion images; first training is performed, based on first training data set, on neural network model for detection of finger occlusion image; L second original occlusion images and K second non-occlusion images are acquired, and second training data set is generated based on second original occlusion images and second non-occlusion images; linear classifier in neural network model having completed first training is replaced with iterative training module to form finger occlusion image detection model; second training is performed on finger occlusion image detection model based on second training data set; image to be detected is input into trained finger occlusion image detection model, to determine whether image to be detected is finger occlusion image.Type: ApplicationFiled: March 30, 2021Publication date: December 30, 2021Applicant: BEIJING XIAOMI PINECONE ELECTRONICS CO., LTD.Inventors: Zhi QU, Yasen ZHANG, Yan SONG, Zhipeng GE, Ruoyu LIU
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Patent number: 11171586Abstract: A power tool is provided including a brushless motor having a stator defining a plurality of phases, a rotor rotatable relative to the stator, and power terminals electrically connected to the phases of the motor. A power unit is provided including power switches. A control unit is interfaced with the power unit to output a drive signal to one or more of the motor switches to drive the phases of the motor over a series of sectors of the rotor rotation. The control unit is configured detect incorrect rotation of the rotor by applying a first series of voltage pulses to a present sector and a second series of voltage pulses to a previous sector, measuring motor currents associated with the first and second series of voltage pulses, and comparing corresponding motor current measurements to detect a transition from the present sector to the previous sector.Type: GrantFiled: April 20, 2020Date of Patent: November 9, 2021Assignee: Black & Decker Inc.Inventors: Shailesh P. Waikar, Zhi Qu, Wing Lin
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Publication number: 20200401881Abstract: A method is provided, including: storing comments generated in response to a content item served over a network; analyzing the comments to determine features associated with each of the comments; using a scoring model to score each comment based on the comment's corresponding features; receiving a request to serve a subset of the comments; responsive to the request, selecting a ranking of the comments that is one permutation from possible rankings of the comments, wherein selecting the ranking is in accordance with a probability distribution of the possible rankings that is based on the scores of the comments; serving comments identified by the selected ranking over the network to a client device; determining a dwell time on the served comments; applying the dwell time to update the scoring model.Type: ApplicationFiled: June 19, 2019Publication date: December 24, 2020Inventors: Kapil Thadani, Akshay Soni, Parikshit Shah, Troy Chevalier, Sreekanth Ramakrishnan, Aaron Nagao, Zhi Qu
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Publication number: 20200343839Abstract: A power tool is provided including a brushless motor having a stator defining a plurality of phases, a rotor rotatable relative to the stator, and power terminals electrically connected to the phases of the motor. A power unit is provided including power switches. A control unit is interfaced with the power unit to output a drive signal to one or more of the motor switches to drive the phases of the motor over a series of sectors of the rotor rotation. The control unit is configured detect incorrect rotation of the rotor by applying a first series of voltage pulses to a present sector and a second series of voltage pulses to a previous sector, measuring motor currents associated with the first and second series of voltage pulses, and comparing corresponding motor current measurements to detect a transition from the present sector to the previous sector.Type: ApplicationFiled: April 20, 2020Publication date: October 29, 2020Inventors: Shailesh P. WAIKAR, Zhi QU, Wing LIN
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Patent number: 9301763Abstract: A tiltable and repositionable anvil assembly for a stapler and a stapler comprising the same are provided. The tiltable and repositionable anvil assembly comprises: an anvil body having a connection portion for pivotable connection; a limitator; and a compression spring disposed between the anvil body and the limitator, in which in an operation of the stapler, the limitator is clamped at a clamping position between the connection portion of the anvil body and a connection portion of the stapler so as to keep the anvil body in a vertical state, and after the operation of the stapler, the limitator is moved away from the clamping position between the connection portion of the anvil body and the connection portion of the stapler, so that the anvil body is tiltable to a tilted state and the compression spring is compressed.Type: GrantFiled: July 30, 2010Date of Patent: April 5, 2016Assignee: B.J.ZH.F. Panther Medical Equipment Co., Ltd.Inventors: Wei Qiao, Fanfeng He, Zhi Qu
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Publication number: 20120325888Abstract: A tiltable and repositionable anvil assembly for a stapler and a stapler comprising the same are provided. The tiltable and repositionable anvil assembly comprises: an anvil body having a connection portion for pivotable connection; a limitator; and a compression spring disposed between the anvil body and the limitator, in which in an operation of the stapler, the limitator is clamped at a clamping position between the connection portion of the anvil body and a connection means of the stapler so as to keep the anvil body in a vertical state, and after the operation of the stapler, the limitator is moved away from the clamping position between the connection portion of the anvil body and the connection means of the stapler, so that the anvil body is tiltable to a tilted state and the compression spring is compressed.Type: ApplicationFiled: July 30, 2010Publication date: December 27, 2012Applicant: B.J.ZH.F. PANTHER MEDICAL EQUIPMENT CO., LTD.Inventors: Wei Qiao, Fanfeng He, Zhi Qu
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Patent number: 8276856Abstract: A support mechanism includes a base assembly and a hinge assembly. The base assembly includes a first cover and a second cover attached to the first cover. The first cover forms two first locking members and the second cover forms two restriction members. The hinge assembly includes a bracket and two pivot units rotatably connected to the bracket. The bracket includes a fixing portion and two connecting portions extending from opposite sides of the fixing portion. The first locking members are latched with the fixing portion of the bracket, and the restriction members engage the first locking members to prevent the first locking members from moving.Type: GrantFiled: April 30, 2010Date of Patent: October 2, 2012Assignees: Innocom Technology (ShenZhen) Co., Ltd., Chimei Innolux CorporationInventors: Te-Hsu Wang, Zhi-Qu Jiao
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Publication number: 20110095145Abstract: A support mechanism includes a base assembly and a hinge assembly. The base assembly includes a first cover and a second cover attached to the first cover. The first cover forms two first locking members and the second cover forms two restriction members. The hinge assembly includes a bracket and two pivot units rotatably connected to the bracket. The bracket includes a fixing portion and two connecting portions extending from opposite sides of the fixing portion. The first locking members are latched with the fixing portion of the bracket, and the restriction members engage the first locking members to prevent the first locking members from moving.Type: ApplicationFiled: April 30, 2010Publication date: April 28, 2011Applicants: INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD., CHIMEI INNOLUX CORPORATIONInventors: TE-HSU WANG, ZHI-QU JIAO
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Patent number: 6911231Abstract: A method for preparing a superconducting heat transfer medium having three basic layers, the method having the steps of preparing a first layer mixture, applying the first layer mixture to a surface of a substrate so as to form a first layer, preparing a second layer mixture, applying the second layer mixture to the substrate over the first layer so as to form a second layer on top of the first layer, preparing a third layer powder, and exposing the second layer to the third layer powder so as to form a third layer on top of the second layer, thus forming the three layer superconducting heat transfer medium.Type: GrantFiled: May 3, 2002Date of Patent: June 28, 2005Assignee: New Qu Energy LimitedInventor: Yu Zhi Qu
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Publication number: 20020182332Abstract: A method for preparing a superconducting heat transfer medium having three basic layers, the method having the steps of preparing a first layer mixture, applying the first layer mixture to a surface of a substrate so as to form a first layer, preparing a second layer mixture, applying the second layer mixture to the substrate over the first layer so as to form a second layer on top of the first layer, preparing a third layer powder, and exposing the second layer to the third layer powder so as to form a third layer on top of the second layer, thus forming the three layer superconducting heat transfer medium.Type: ApplicationFiled: May 3, 2002Publication date: December 5, 2002Inventor: Yu Zhi Qu