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).

  • Publication number: 20240110095
    Abstract: 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: Application
    Filed: March 30, 2023
    Publication date: April 4, 2024
    Inventors: Qinghua LI, Lingfeng WANG, Xuping LIU, Xiao JIN, Dongyu LI, Deng WANG, Jingke BAI, Bing XU
  • Publication number: 20230159062
    Abstract: 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: Application
    Filed: January 20, 2023
    Publication date: May 25, 2023
    Inventor: Lingfeng Xu
  • Patent number: 11477018
    Abstract: 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: Grant
    Filed: March 20, 2020
    Date of Patent: October 18, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Kai Zhao, Lingfeng Xu, Hongyan Pei, Pan Ni
  • Patent number: 11427532
    Abstract: 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: Grant
    Filed: October 28, 2019
    Date of Patent: August 30, 2022
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Shuizhu Wu, Lingfeng Xu, Fang Zeng
  • Publication number: 20220264467
    Abstract: 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: Application
    Filed: February 22, 2021
    Publication date: August 18, 2022
    Inventors: Kai ZHAO, Lingfeng XU, Hongtao GUAN
  • Patent number: 11336906
    Abstract: 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: Grant
    Filed: April 17, 2019
    Date of Patent: May 17, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Lingfeng Xu
  • Publication number: 20220041545
    Abstract: 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: Application
    Filed: October 28, 2019
    Publication date: February 10, 2022
    Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Shuizhu WU, Lingfeng XU, Fang ZENG
  • Publication number: 20210235098
    Abstract: 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: Application
    Filed: April 17, 2019
    Publication date: July 29, 2021
    Inventor: Lingfeng XU
  • Patent number: 11017484
    Abstract: 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: Grant
    Filed: July 20, 2018
    Date of Patent: May 25, 2021
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: 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
  • Publication number: 20210135863
    Abstract: 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: Application
    Filed: March 20, 2020
    Publication date: May 6, 2021
    Inventors: Kai ZHAO, Lingfeng XU, Hongyan PEI, Pan NI
  • Patent number: 10935498
    Abstract: 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: Grant
    Filed: March 26, 2019
    Date of Patent: March 2, 2021
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Shuizhu Wu, Lingfeng Xu, Ling Ni, Fang Zeng
  • Publication number: 20210048393
    Abstract: 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: Application
    Filed: March 26, 2019
    Publication date: February 18, 2021
    Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Shuizhu WU, Lingfeng XU, Ling NI, Fang ZENG
  • Patent number: 10861109
    Abstract: 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: Grant
    Filed: July 25, 2018
    Date of Patent: December 8, 2020
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: 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
  • Patent number: 10861108
    Abstract: 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: Grant
    Filed: July 25, 2018
    Date of Patent: December 8, 2020
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: 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
  • Patent number: 10812620
    Abstract: 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: Grant
    Filed: July 19, 2019
    Date of Patent: October 20, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Lingfeng Xu
  • Publication number: 20200044693
    Abstract: 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: Application
    Filed: May 6, 2019
    Publication date: February 6, 2020
    Inventors: Hongyan PEI, Lingfeng XU, Wei DENG
  • Publication number: 20200028937
    Abstract: 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: Application
    Filed: July 19, 2019
    Publication date: January 23, 2020
    Inventor: Lingfeng XU
  • Publication number: 20180331985
    Abstract: 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: Application
    Filed: July 20, 2018
    Publication date: November 15, 2018
    Inventors: 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
  • Publication number: 20180330452
    Abstract: 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: Application
    Filed: July 25, 2018
    Publication date: November 15, 2018
    Inventors: 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
  • Publication number: 20180330453
    Abstract: 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: Application
    Filed: July 25, 2018
    Publication date: November 15, 2018
    Inventors: 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