Patents by Inventor DALEI ZHANG
DALEI 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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Patent number: 11893831Abstract: The present disclosure provides a method and device to process identity information based on a fundus image. An identity information comparison method includes: recognizing a fundus image by using a neural network to obtain a multi-dimensional feature vector representing the identity of a user; comparing the obtained multi-dimensional feature vector with each multi-dimensional feature vector stored in a database; and determining, according to a comparison result, whether there is a matching between the currently obtained multi-dimensional feature vector and a multi-dimensional feature vector pre-stored in the database.Type: GrantFiled: April 8, 2020Date of Patent: February 6, 2024Inventors: Andre Wang He, Jianhao Xiong, Meng Fu, Xiaopei Zhu, Xin Zhao, Chao He, Dalei Zhang
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Patent number: 11854501Abstract: The present disclosure provides a backlight driving circuit including a power supply module and a current adjustment module. The current adjustment module detects the brightness of the first light-emitting columns and/or the second light-emitting columns to obtain detection current, and compares the detection current with a mode switching current. The current adjustment module controls one first light-emitting column and one second light-emitting column to connect with one first wire simultaneously, or controls one first light-emitting column to connect with one second connecting wire and controls one second light-emitting column to connect with another second connecting wire.Type: GrantFiled: June 9, 2023Date of Patent: December 26, 2023Assignees: MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITEDInventors: Guofei Ji, Dalei Zhang, Haoxuan Zheng
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Publication number: 20230404401Abstract: A fully-automatic photography method for a fundus image includes moving a lens of the fundus camera to align with the pupil, controlling the lens to approach the eyeball and capturing an image, the image being formed by an illuminating beam reflected by the cornea, determining a working distance by using the image, adjusting the focal length, capturing a fundus image, and determining a photography focal length by using the fundus image, and photographing a fundus image by using the photography focal length on the working distance.Type: ApplicationFiled: January 27, 2021Publication date: December 21, 2023Inventors: Dingshan HU, Xinqiang PANG, Xin JIANG, Hanyue GUO, Wenbin REN, Xiangang CHANG, Peng WANG, Yubo WEI, Chao HE, Dalei ZHANG
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Patent number: 11501428Abstract: The present invention discloses a method, apparatus and system for detecting a fundus image on the basis of machine learning. The method comprises: acquiring a fundus image to be detected; classifying the entire region of the fundus image by using a first classification model to determine whether the fundus image contains a first feature; and if the fundus image does not contain any first feature, classifying a specific region in the fundus image by using at least one second classification model to determine whether the fundus image contains any second feature, wherein the saliency of the first features are greater than that of the second features.Type: GrantFiled: April 25, 2019Date of Patent: November 15, 2022Inventors: Xin Zhao, JianHao Xiong, ShuLei Li, YongPei Ma, Chao He, Dalei Zhang
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Publication number: 20220358791Abstract: The present disclosure provides a method and device to process identity information based on a fundus image. An identity information comparison method includes: recognizing a fundus image by using a neural network to obtain a multi-dimensional feature vector representing the identity of a user; comparing the obtained multi-dimensional feature vector with each multi-dimensional feature vector stored in a database; and determining, according to a comparison result, whether there is a matching between the currently obtained multi-dimensional feature vector and a multi-dimensional feature vector pre-stored in the database.Type: ApplicationFiled: April 8, 2020Publication date: November 10, 2022Applicant: SHANGHAI EAGLEVISION MEDICAL TECHNOLOGY CO., LTD.Inventors: Andre Wang HE, Jianhao XIONG, Meng FU, Xiaopei ZHU, Xin ZHAO, Chao HE, Dalei ZHANG
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Patent number: 11298732Abstract: Disclosed is a method of simultaneously processing fly ash and COPR, which can treat the fly ash and COPR harmlessly during the landfilling process through biochemical and engineering measures. The method includes: transferring the fly ash and COPR to the yard; laying an impervious layer inside the yard; laying a diversion material at a bottom of the yard; laying a mixture layer on the diversion material, where the mixture layer contains a biogas residue, a waste carbon source, ferrous sulfate, a nutritional additive, the waste incineration fly ash and COPR; placing an internal-electrolysis ceramsite layer on the mixture layer; injecting a carbon source solution from an upper portion of the yard and collecting a leachate to a collection device through the diversion material irregularly during the operation; and recirculating the leachate to a top of the yard for spray reinjection.Type: GrantFiled: December 20, 2019Date of Patent: April 12, 2022Assignees: QINGDAO UNIVERSITY OF TECHNOLOGY, QINGDAO JIEHUA ENVIRONMENTAL TECHNOLOGY CO., LTD.Inventors: Dalei Zhang, Jianxue Zhao
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Patent number: 11294209Abstract: A liquid crystal display device includes a display panel with a switchable viewing angle and a driving circuit for driving the display panel. The display panel can switch between wide and narrow viewing angles. The driving circuit includes a display control unit, a viewing angle control unit, a viewing angle control voltage generating circuit, and a gamma voltage generating circuit. The viewing angle control unit is connected to the display control unit, the viewing angle control voltage generating circuit and the gamma voltage generating circuit. The display control unit is used to control the display panel to realize picture display. The viewing angle control unit is used to control the display panel to switch between wide viewing angle display and narrow viewing angle display.Type: GrantFiled: August 3, 2018Date of Patent: April 5, 2022Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Weifeng Fan, Hsin-Chieh Lai, Jia He, Dalei Zhang, Peiyang Lin
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Publication number: 20220047159Abstract: The present disclosure provides a glaucoma image recognition method, device and diagnosis system. The method includes acquiring a fundus image; obtaining an optic disc image and an optic cup image according to the fundus image; obtaining a disc rim image according to the optic disc image and the optic cup image; and determining whether the fundus image is classified as glaucoma according to the disc rim image.Type: ApplicationFiled: November 22, 2019Publication date: February 17, 2022Applicant: SHANGHAI EAGLEVISION MEDICAL TECHNOLOGY CO., LTD.Inventors: Jianhao XIONG, Lijian CHEN, Yelin HUANG, Xin ZHAO, Dalei ZHANG
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Publication number: 20210245211Abstract: Disclosed is a method of simultaneously processing fly ash and COPR, which can treat the fly ash and COPR harmlessly during the landfilling process through biochemical and engineering measures. The method includes: transferring the fly ash and COPR to the yard; laying an impervious layer inside the yard; laying a diversion material at a bottom of the yard; laying a mixture layer on the diversion material, where the mixture layer contains a biogas residue, a waste carbon source, ferrous sulfate, a nutritional additive, the waste incineration fly ash and COPR; placing an internal-electrolysis ceramsite layer on the mixture layer; injecting a carbon source solution from an upper portion of the yard and collecting a leachate to a collection device through the diversion material irregularly during the operation; and recirculating the leachate to a top of the yard for spray reinjection.Type: ApplicationFiled: December 20, 2019Publication date: August 12, 2021Inventors: Dalei ZHANG, Jianxue ZHAO
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Publication number: 20210223584Abstract: A liquid crystal display device includes a display panel with a switchable viewing angle and a driving circuit for driving the display panel. The display panel can switch between wide and narrow viewing angles. The driving circuit includes a display control unit, a viewing angle control unit, a viewing angle control voltage generating circuit, and a gamma voltage generating circuit. The viewing angle control unit is connected to the display control unit, the viewing angle control voltage generating circuit and the gamma voltage generating circuit. The display control unit is used to control the display panel to realize picture display. The viewing angle control unit is used to control the display panel to switch between wide viewing angle display and narrow viewing angle display.Type: ApplicationFiled: August 3, 2018Publication date: July 22, 2021Inventors: WEIFENG FAN, HSIN-CHIEH LAI, JIA HE, DALEI ZHANG, PEIYANG LIN
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Publication number: 20210042912Abstract: The present invention discloses a method, apparatus and system for detecting a fundus image on the basis of machine learning. The method comprises: acquiring a fundus image to be detected; classifying the entire region of the fundus image by using a first classification model to determine whether the fundus image contains a first feature; and if the fundus image does not contain any first feature, classifying a specific region in the fundus image by using at least one second classification model to determine whether the fundus image contains any second feature, wherein the saliency of the first features are greater than that of the second features.Type: ApplicationFiled: April 25, 2019Publication date: February 11, 2021Inventors: Xin Zhao, JianHao Xiong, ShuLei Li, YongPei Ma, Chao He, Dalei Zhang
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Patent number: 10745770Abstract: The present invention provides a method of simultaneously recycling plastics and detoxifying chromite ore processing residue with residual heat from a steel slag. By heating and gasifying plastics with steel slag, followed by catalytically split-decomposing the plastics with catalysts such as chromite ore processing residue, the plastics are thoroughly converted into a energy gas under water vapor gasification. The surface coking of Chromite Ore Processing Residue is avoided. Meanwhile, the energy gas reduces Cr6+ in Chromite Ore Processing Residue into Cr3+, and the energy gas is cooled, and CO2 and Cl in the energy gas are adsorbed by alkaline substances in Chromite Ore Processing Residue. With this method, chromite ore processing residue is detoxified, and steel slag is cooled, furthermore, energy is saved and a energy gas is obtained.Type: GrantFiled: July 5, 2018Date of Patent: August 18, 2020Assignee: QINGDAO TECHNOLOGICAL UNIVERSITYInventors: Dalei Zhang, Shenqian Deng, Jian Li, Ruidong Li, Yuanfeng Qi
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Patent number: 10688546Abstract: Disclosed is a biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium site and soil remediation agent. The method is applied to chromium-containing soil by formulating biogas residue, a carbon source and a sulfate into said soil remediation agent. Special construction and maintenance methods are adopted to achieve effective reduction of hexavalent chromium in deep contaminated soil. Therefore, the biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium-containing sites cannot only be used to remediate chromium-containing sites deep in depth at a low cost and high efficiency, but also achieve recycled utilization of waste by treating waste with one another, thereby possessing significant value in promotion and practice.Type: GrantFiled: November 30, 2018Date of Patent: June 23, 2020Assignee: QINGDAO TECHNOLOGICAL UNIVERSITYInventors: Dalei Zhang, Yuhao Zhao, Lu Chen, Jianju Li, Feng Zhao, Wentao Luo
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Patent number: 10649283Abstract: A liquid crystal display device includes a display panel, a display control module and a voltage output module. The display panel includes a first substrate, a second substrate, and a liquid crystal layer between the first substrate and the second substrate. The first substrate is provided with a viewing angle control electrode. In a wide viewing angle mode, the image refresh frequency of the display panel is the same as the data input frequency of the image data inputted to the display control module, and the voltage output module outputs a direct current voltage to the viewing angle control electrode. In a narrow viewing angle mode, the image refresh frequency of the display panel is twice or four times the data input frequency of the image data inputted to the display control module, and the voltage output module outputs a periodic alternating voltage to the viewing angle control electrode.Type: GrantFiled: September 13, 2016Date of Patent: May 12, 2020Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Techen Chung, Peiyang Lin, Dalei Zhang
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Patent number: 10596606Abstract: Disclosed is an in-situ detoxification method for a heavily contaminated site by hexavalent chromium. The method includes injecting a chemical reducing agent into a site heavily contaminated with hexavalent chromium, and injecting a chromium soil remediation microbial agent into the site after 0-10 days. The in-situ detoxification method includes: first, in-situ injecting the chemical reducing agent into the soil, preliminarily reducing high-concentration hexavalent chromium such that the hexavalent chromium of high concentration has no toxic effect on the subsequent ecological microbial agent, then in-situ injecting the ecological microbial agent prepared from biogas residue, a carbon source and sulfate into the chromium-containing soil under pressure, and forming a large-scale reducing buffer zone containing sulfate-reducing bacteria and sulfide in a special maintenance manner in the subsurface soil of the site to reduce the hexavalent chromium continuously and effectively.Type: GrantFiled: November 30, 2018Date of Patent: March 24, 2020Assignee: QINGDAO TECHNOLOGY UNIVERSITYInventors: Dalei Zhang, Yuhao Zhao, Yingfei Sun, Manqian Wang, Xinyu Wang, Shuang Wang
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Publication number: 20190278117Abstract: A liquid crystal display device includes a display panel, a display control module and a voltage output module. The display panel includes a first substrate, a second substrate, and a liquid crystal layer between the first substrate and the second substrate. The first substrate is provided with a viewing angle control electrode. In a wide viewing angle mode, the image refresh frequency of the display panel is the same as the data input frequency of the image data inputted to the display control module, and the voltage output module outputs a direct current voltage to the viewing angle control electrode. In a narrow viewing angle mode, the image refresh frequency of the display panel is twice or four times the data input frequency of the image data inputted to the display control module, and the voltage output module outputs a periodic alternating voltage to the viewing angle control electrode.Type: ApplicationFiled: September 13, 2016Publication date: September 12, 2019Inventors: TECHEN CHUNG, PEIYANG LIN, DALEI ZHANG
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Publication number: 20190091741Abstract: Disclosed is a biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium site and soil remediation agent. The method is applied to chromium-containing soil by formulating biogas residue, a carbon source and a sulfate into said soil remediation agent. Special construction and maintenance methods are adopted to achieve effective reduction of hexavalent chromium in deep contaminated soil. Therefore, the biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium-containing sites cannot only be used to remediate chromium-containing sites deep in depth at a low cost and high efficiency, but also achieve recycled utilization of waste by treating waste with one another, thereby possessing significant value in promotion and practice.Type: ApplicationFiled: November 30, 2018Publication date: March 28, 2019Inventors: Dalei ZHANG, Yuhao ZHAO, Lu CHEN, Jianju LI, Feng ZHAO, Wentao LUO
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Publication number: 20190091742Abstract: Disclosed is an in-situ detoxification method for a heavily contaminated site by hexavalent chromium. The method includes injecting a chemical reducing agent into a site heavily contaminated with hexavalent chromium, and injecting a chromium soil remediation microbial agent into the site after 0-10 days. The in-situ detoxification method includes: first, in-situ injecting the chemical reducing agent into the soil, preliminarily reducing high-concentration hexavalent chromium such that the hexavalent chromium of high concentration has no toxic effect on the subsequent ecological microbial agent, then in-situ injecting the ecological microbial agent prepared from biogas residue, a carbon source and sulfate into the chromium-containing soil under pressure, and forming a large-scale reducing buffer zone containing sulfate-reducing bacteria and sulfide in a special maintenance manner in the subsurface soil of the site to reduce the hexavalent chromium continuously and effectively.Type: ApplicationFiled: November 30, 2018Publication date: March 28, 2019Inventors: Dalei ZHANG, Yuhao ZHAO, Yingfei SUN, Manqian WANG, Xinyu WANG, Shuang WANG
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Patent number: 10191310Abstract: A power conversion circuit for switching the viewing angle of an LCD, includes an input terminal, an output terminal, a switching unit, an isolating unit, an output unit, a first power supply, a second power supply, and a third power supply. When the input terminal is provided with a low level voltage, the switching unit is switched on, the voltage of the second power supply is provided as a first DC voltage to the output terminal via the switching unit and the isolating unit. When the input terminal is provided with a high level voltage, the switching unit is switched off, the voltage of the third power supply is provided as a second DC voltage to the output terminal via the output unit and the isolating unit, wherein the second DC voltage is higher than the first DC voltage.Type: GrantFiled: October 15, 2016Date of Patent: January 29, 2019Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.Inventors: Dalei Zhang, Yongxin Ruan, Qingbai Lv
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Publication number: 20180312933Abstract: The present invention provides a method of simultaneously recycling plastics and detoxifying chromite ore processing residue with residual heat from a steel slag. By heating and gasifying plastics with steel slag, followed by catalytically split-decomposing the plastics with catalysts such as chromite ore processing residue, the plastics are thoroughly converted into a energy gas under water vapor gasification. The surface coking of Chromite Ore Processing Residue is avoided. Meanwhile, the energy gas reduces Cr6+ in Chromite Ore Processing Residue into Cr3+, and the energy gas is cooled, and CO2 and Cl in the energy gas are adsorbed by alkaline substances in Chromite Ore Processing Residue. With this method, chromite ore processing residue is detoxified, and steel slag is cooled, furthermore, energy is saved and a energy gas is obtained.Type: ApplicationFiled: July 5, 2018Publication date: November 1, 2018Inventors: Dalei ZHANG, Shenqian DENG, Jian LI, Ruidong LI, Yuanfeng QI