Patents by Inventor Lingfeng Xu
Lingfeng Xu 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: 20240110095Abstract: The present disclosure belongs to the technical field of nanomaterial synthesis, and in particular, to a preparation method for a narrow-linewidth alloy quantum dot. The preparation method provided by the present disclosure includes the following steps: in a protective gas atmosphere, mixing a cadmium source, an organic ligand, and an organic solvent with a first selenium source for a nucleation reaction to obtain an organic solution of a CdSe quantum dot core; and mixing the organic solution of the CdSe quantum dot core, a zinc source and an inorganic anion source for shell coating to obtain the narrow-linewidth alloy quantum dot, where the inorganic anion source includes a second selenium source.Type: ApplicationFiled: March 30, 2023Publication date: April 4, 2024Inventors: Qinghua LI, Lingfeng WANG, Xuping LIU, Xiao JIN, Dongyu LI, Deng WANG, Jingke BAI, Bing XU
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Publication number: 20230159062Abstract: A method includes: obtaining environment information detected by a second vehicle, where the second vehicle is a vehicle traveling in a target road section, and the target road section is a road section located in front of a traveling direction of a first vehicle; predicting, based on the environment information detected by the second vehicle, whether the target road section is suitable for automated driving; and if the target road section is unsuitable for automated driving and the first vehicle is currently in an automated driving mode, reminding a driver of the first vehicle to take over a driving control right of the first vehicle, so that the first vehicle is switched from the automated driving mode to a manual driving mode.Type: ApplicationFiled: January 20, 2023Publication date: May 25, 2023Inventor: Lingfeng Xu
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Patent number: 11477018Abstract: The disclosure provides a method, a device and a system for encrypting interactive data. In an aspect, the method includes: receiving a request for accessing a network from a terminal device, the request includes a device identifier of the terminal device; generating a random encryption code according to the device identifier; and feeding back the random encryption code to the terminal device so that the terminal device encrypts interactive data using the random encryption code after accessing the network. In another aspect, the method includes: transmitting a request for accessing a network to a gateway device, the request includes a device identifier of a terminal device; receiving a random encryption code fed back by the gateway device, the random encryption code is information for encrypting interactive data during the terminal device accessing the network; and encrypting interactive data with the random encryption code.Type: GrantFiled: March 20, 2020Date of Patent: October 18, 2022Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.Inventors: Kai Zhao, Lingfeng Xu, Hongyan Pei, Pan Ni
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Patent number: 11427532Abstract: Disclosed is a fluorescent compound for the detection of isocyanate substances, a preparation method therefor and use thereof as a test-paper-type detection probe. The fluorescent compound is 2,4-di(((4?-(diphenylamino)-[1,1?-biphenyl]-4-yl)imino)methyl)phenol. The fluorescent compound is prepared by means of a one-step method. The fluorescent compound has simple and convenient preparation with high yield, and is capable of making a rapid and specific response to isocyanate substances. Moreover, the fluorescence intensity of the fluorescent compound will enhance with the increase of the isocyanate concentration. The fluorescent compound can be made into a portable test-paper-type probe for the detection of isocyanate substances in air, and can achieve the visual detection of volatile isocyanate gases. The probe has an aggregation-induced emission effect, and thus it has higher fluorescence quantum yield when using a test-paper-type probe for detection.Type: GrantFiled: October 28, 2019Date of Patent: August 30, 2022Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGYInventors: Shuizhu Wu, Lingfeng Xu, Fang Zeng
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Publication number: 20220264467Abstract: Disclosed are a terminal, a communication system, a communication method and a storage medium. The terminal comprises a receiver and a processor, the receiver is configured to output, upon reception of a destination address in a data packet, a trigger signal; and the processor is configured to control, upon detection of the trigger signal and when the destination address is not the address of the terminal, the receiver to stop receiving the data packet. The present disclosure can effectively reduce power consumption of terminals.Type: ApplicationFiled: February 22, 2021Publication date: August 18, 2022Inventors: Kai ZHAO, Lingfeng XU, Hongtao GUAN
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Patent number: 11336906Abstract: An image processing method for an image, a data transmission method, an image processing device for an image, a data transmission device, and a storage medium are disclosed. The image is a binarized image, and the binarized image includes a plurality of pixels, among the plurality of pixels, pixels having a first value are first pixels, and pixels having a second value are second pixels, and the image processing method includes: dividing the image to determine N rectangular regions, which include only the first pixels, of the image; and obtaining start coordinates and end coordinates of the N rectangular regions, respectively, thereby obtaining compressed data after compressing the image. N is an integer greater than or equal to 1. The image processing method can improve the compression rate of the image.Type: GrantFiled: April 17, 2019Date of Patent: May 17, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Lingfeng Xu
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Publication number: 20220041545Abstract: Disclosed is a fluorescent compound for the detection of isocyanate substances, a preparation method therefor and use thereof as a test-paper-type detection probe. The fluorescent compound is 2,4-di(((4?-(diphenylamino)-[1,1?-biphenyl]-4-yl)imino)methyl)phenol. The fluorescent compound is prepared by means of a one-step method. The fluorescent compound has simple and convenient preparation with high yield, and is capable of making a rapid and specific response to isocyanate substances. Moreover, the fluorescence intensity of the fluorescent compound will enhance with the increase of the isocyanate concentration. The fluorescent compound can be made into a portable test-paper-type probe for the detection of isocyanate substances in air, and can achieve the visual detection of volatile isocyanate gases. The probe has an aggregation-induced emission effect, and thus it has higher fluorescence quantum yield when using a test-paper-type probe for detection.Type: ApplicationFiled: October 28, 2019Publication date: February 10, 2022Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGYInventors: Shuizhu WU, Lingfeng XU, Fang ZENG
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Publication number: 20210235098Abstract: An image processing method for an image, a data transmission method, an image processing device for an image, a data transmission device, and a storage medium are disclosed. The image is a binarized image, and the binarized image includes a plurality of pixels, among the plurality of pixels, pixels having a first value are first pixels, and pixels having a second value are second pixels, and the image processing method includes: dividing the image to determine N rectangular regions, which include only the first pixels, of the image; and obtaining start coordinates and end coordinates of the N rectangular regions, respectively, thereby obtaining compressed data after compressing the image. N is an integer greater than or equal to 1. The image processing method can improve the compression rate of the image.Type: ApplicationFiled: April 17, 2019Publication date: July 29, 2021Inventor: Lingfeng XU
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Patent number: 11017484Abstract: A resource sharing method is performed at a mobile terminal, the method including the following steps: obtaining configured user identifier; obtaining multimedia data; obtaining a resource sharing request, and associating the user identifier with the multimedia data according to the resource sharing request; generating a resource sharing instruction according to an association relationship between the user identifier and the multimedia data; and executing the resource sharing instruction.Type: GrantFiled: July 20, 2018Date of Patent: May 25, 2021Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Wenhui Lai, Danni Lin, Pengfei Zhong, Feng Xiong, Lin Liu, Wei Zhai, Richeng Xiao, Lingfeng Xu, Zengkang Liao, Cong Tang, Ming Huang, Moubang Li, Jianwei Kuang, Junchao Wang, Song Wang, Zurong Wu, Qiang Tu, Shan Chen, Jianli Li, Chang He, Wei Shi, Yanxue Chong, Yehui Huang, Qianqian Lin, Yi Chen, Yumiao Zhang, Yifan Yang, Chuanqing Li, Zhenquan Wu, Xingxing Dai
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Publication number: 20210135863Abstract: The disclosure provides a method, a device and a system for encrypting interactive data. In an aspect, the method includes: receiving a request for accessing a network from a terminal device, the request includes a device identifier of the terminal device; generating a random encryption code according to the device identifier; and feeding back the random encryption code to the terminal device so that the terminal device encrypts interactive data using the random encryption code after accessing the network. In another aspect, the method includes: transmitting a request for accessing a network to a gateway device, the request includes a device identifier of a terminal device; receiving a random encryption code fed back by the gateway device, the random encryption code is information for encrypting interactive data during the terminal device accessing the network; and encrypting interactive data with the random encryption code.Type: ApplicationFiled: March 20, 2020Publication date: May 6, 2021Inventors: Kai ZHAO, Lingfeng XU, Hongyan PEI, Pan NI
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Patent number: 10935498Abstract: The present invention relates to a fluorescent probe for detecting nitroreductase and a preparation method and use thereof in enzymatic reactions, belonging to the field of industrial analysis and detection. The fluorescent probe is 3-(4-(2-(4?-(diphenylamino)-3-((4-nitrobenzyl)oxy)-[1, 1?-biphenyl]-4-yl)vinyl)quinolin-1-ium-1-yl)propane-1-sulfonate. The fluorescent probe of the present invention, with the introduction of hydrophilic groups, sulfonate and quinolinium, the probe's hydrophilicity is enhanced, under the enzymatic catalysis of nitroreductase (NTR), 1,6-rearrangement and elimination reaction occurs, and hydroxyl group is generated. Detection and analysis of the NTR in the industrial enzymatic reactions can be realized due to the change of fluorescence which is induced by the intramolecular charge transfer (ICT) effect.Type: GrantFiled: March 26, 2019Date of Patent: March 2, 2021Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGYInventors: Shuizhu Wu, Lingfeng Xu, Ling Ni, Fang Zeng
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Publication number: 20210048393Abstract: The present invention relates to a fluorescent probe for detecting nitroreductase and a preparation method and use thereof in enzymatic reactions, belonging to the field of industrial analysis and detection. The fluorescent probe is 3-(4-(2-(4?-(diphenylamino)-3-((4-nitrobenzyl)oxy)-[1,1?-biphenyl]-4-yl)vinyl)quinolin-1-ium-1-yl)propane-1-sulfonate. The fluorescent probe of the present invention, with the introduction of hydrophilic groups, sulfonate and quinolinium, the probe's hydrophilicity is enhanced, under the enzymatic catalysis of nitroreductase (NTR), 1,6-rearrangement and elimination reaction occurs, and hydroxyl group is generated. Detection and analysis of the NTR in the industrial enzymatic reactions can be realized due to the change of fluorescence which is induced by the intramolecular charge transfer (ICT) effect.Type: ApplicationFiled: March 26, 2019Publication date: February 18, 2021Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGYInventors: Shuizhu WU, Lingfeng XU, Ling NI, Fang ZENG
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Patent number: 10861109Abstract: A resource sharing method is performed at a mobile terminal, the method including: receiving a resource sharing message configuration file that is delivered in a pre-configured delivery time period; obtaining a theme activity time period according to the resource sharing message configuration file; displaying a resource sharing message configuration portal in the theme activity time period; detecting an operation on the resource sharing message configuration portal, and entering a resource sharing message configuration page; obtaining, according to a configuration performed on the resource sharing message configuration page, a resource sharing message template matching the theme activity time period and resource information matching the resource sharing message template; generating a resource sharing message according to the obtained resource sharing message template and resource information, the resource sharing message including data for obtaining a resource; and sharing the resource sharing message.Type: GrantFiled: July 25, 2018Date of Patent: December 8, 2020Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Wenhui Lai, Danni Lin, Pengfei Zhong, Feng Xiong, Lin Liu, Wei Zhai, Richeng Xiao, Lingfeng Xu, Zengkang Liao, Cong Tang, Ming Huang, Moubang Li, Jianwei Kuang, Junchao Wang, Song Wang, Zurong Wu, Qiang Tu, Shan Chen, Jianli Li, Chang He, Wei Shi, Yanxue Chong, Yehui Huang, Qianqian Lin, Yi Chen, Yumiao Zhang, Yifan Yang, Chuanqing Li, Zhenquan Wu, Xingxing Dai
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Patent number: 10861108Abstract: A resource sharing method is performed at a mobile terminal, the method including: configuring a to-be-shared resource by using a processor, to obtain data needed for obtaining a resource; obtaining a user identifier of a currently logged-in social networking application; obtaining a resource sharing message image template, a user-defined visible element, and configuration information of the visible element that are associated with the user identifier; drawing a resource sharing message image according to the resource sharing message image template, the visible element, and the configuration information, and displaying the resource sharing message image on a social network propagation page of the social networking application; and transferring, by using a social network, a resource sharing message corresponding to the resource sharing message image, the resource sharing message including the data needed for obtaining a resource.Type: GrantFiled: July 25, 2018Date of Patent: December 8, 2020Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Wenhui Lai, Danni Lin, Pengfei Zhong, Feng Xiong, Lin Liu, Wei Zhai, Richeng Xiao, Lingfeng Xu, Zengkang Liao, Cong Tang, Ming Huang, Moubang Li, Jianwei Kuang, Junchao Wang, Song Wang, Zurong Wu, Qiang Tu, Shan Chen, Jianli Li, Chang He, Wei Shi, Yanxue Chong, Yehui Huang, Qianqian Lin, Yi Chen, Yumiao Zhang, Yifan Yang, Chuanqing Li, Zhenquan Wu, Xingxing Dai
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Patent number: 10812620Abstract: A control method of a home gateway includes: receiving a cloud control command, identifying a manufacturer code and a communication protocol of an terminal device to be controlled from the cloud control command, selecting a target child process from a plurality of child processes, writing the cloud control command to a communication message queue corresponding to the target child process according to the communication protocol of the terminal device to be controlled; extracting the cloud control command, determining a first target communication interface coupled with the terminal device to be controlled, and controlling the terminal device to be controlled through the first target communication interface.Type: GrantFiled: July 19, 2019Date of Patent: October 20, 2020Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Lingfeng Xu
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Publication number: 20200044693Abstract: The present application provides a Bluetooth receiving apparatus, a Bluetooth positioning system and a Bluetooth positioning method. The Bluetooth receiving apparatus includes: a Bluetooth receiver configured to receive a positioning signal from a Bluetooth terminal and determine a signal strength value of the received positioning signal; and a power carrier modulator configured to modulate the received signal strength value onto a power carrier signal to transmit the modulated power carrier signal through a power line.Type: ApplicationFiled: May 6, 2019Publication date: February 6, 2020Inventors: Hongyan PEI, Lingfeng XU, Wei DENG
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Publication number: 20200028937Abstract: A control method of a home gateway includes: receiving a cloud control command, identifying a manufacturer code and a communication protocol of an terminal device to be controlled from the cloud control command, selecting a target child process from a plurality of child processes, writing the cloud control command to a communication message queue corresponding to the target child process according to the communication protocol of the terminal device to be controlled; extracting the cloud control command, determining a first target communication interface coupled with the terminal device to be controlled, and controlling the terminal device to be controlled through the first target communication interface.Type: ApplicationFiled: July 19, 2019Publication date: January 23, 2020Inventor: Lingfeng XU
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Publication number: 20180331985Abstract: A resource sharing method is performed at a mobile terminal, the method including the following steps: obtaining configured user identifier; obtaining multimedia data; obtaining a resource sharing request, and associating the user identifier with the multimedia data according to the resource sharing request; generating a resource sharing instruction according to an association relationship between the user identifier and the multimedia data; and executing the resource sharing instruction.Type: ApplicationFiled: July 20, 2018Publication date: November 15, 2018Inventors: Wenhui LAI, Danni LIN, Pengfei ZHONG, Feng XIONG, Lin LIU, Wei ZHAI, Richeng XIAO, Lingfeng XU, Zengkang LIAO, Cong TANG, Ming HUANG, Moubang LI, Jianwei KUANG, Junchao WANG, Song WANG, Zurong WU, Qiang TU, Shan CHEN, Jianli LI, Chang HE, Wei SHI, Yanxue CHONG, Yehui HUANG, Qianqian LIN, Yi CHEN, Yumiao ZHANG, Yifan YANG, Chuanqing LI, Zhenquan WU, Xingxing DAI
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Publication number: 20180330452Abstract: A resource sharing method is performed at a mobile terminal, the method including: configuring a to-be-shared resource by using a processor, to obtain data needed for obtaining a resource; obtaining a user identifier of a currently logged-in social networking application; obtaining a resource sharing message image template, a user-defined visible element, and configuration information of the visible element that are associated with the user identifier; drawing a resource sharing message image according to the resource sharing message image template, the visible element, and the configuration information, and displaying the resource sharing message image on a social network propagation page of the social networking application; and transferring, by using a social network, a resource sharing message corresponding to the resource sharing message image, the resource sharing message including the data needed for obtaining a resource.Type: ApplicationFiled: July 25, 2018Publication date: November 15, 2018Inventors: Wenhui LAI, Danni LIN, Pengfei ZHONG, Feng XIONG, Lin LIU, Wei ZHAI, Richeng XIAO, Lingfeng XU, Zengkang LIAO, Cong TANG, Ming HUANG, Moubang LI, Jianwei KUANG, Junchao WANG, Song WANG, Zurong WU, Qiang TU, Shan CHEN, Jianli LI, Chang HE, Wei SHI, Yanxue CHONG, Yehui HUANG, Qianqian LIN, Yi CHEN, Yumiao ZHANG, Yifan YANG, Chuanqing LI, Zhenquan WU, Xingxing DAI
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Publication number: 20180330453Abstract: A resource sharing method is performed at a mobile terminal, the method including: receiving a resource sharing message configuration file that is delivered in a pre-configured delivery time period; obtaining a theme activity time period according to the resource sharing message configuration file; displaying a resource sharing message configuration portal in the theme activity time period; detecting an operation on the resource sharing message configuration portal, and entering a resource sharing message configuration page; obtaining, according to a configuration performed on the resource sharing message configuration page, a resource sharing message template matching the theme activity time period and resource information matching the resource sharing message template; generating a resource sharing message according to the obtained resource sharing message template and resource information, the resource sharing message including data for obtaining a resource; and sharing the resource sharing message.Type: ApplicationFiled: July 25, 2018Publication date: November 15, 2018Inventors: Wenhui LAI, Danni LIN, Pengfei ZHONG, Feng XIONG, Lin LIU, Wei ZHAI, Richeng XIAO, Lingfeng XU, Zengkang LIAO, Cong TANG, Ming HUANG, Moubang LI, Jianwei KUANG, Junchao WANG, Song WANG, Zurong WU, Qiang TU, Shan CHEN, Jianli LI, Chang HE, Wei SHI, Yanxue CHONG, Yehui HUANG, Qianqian LIN, Yi CHEN, Yumiao ZHANG, Yifan YANG, Chuanqing LI, Zhenquan WU, Xingxing DAI