Patents by Inventor Xiaoqiang Zhang

Xiaoqiang 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).

  • Publication number: 20240088631
    Abstract: Provided are an overhead line detection method and system based on a cable inspection robot. The cable inspection robot is suspended on the overhead line. An imaging unit and a laser emission unit are disposed at the front end of the cable inspection robot. The imaging unit is at a first angle to the overhead line. The laser emission unit is at a second angle to the overhead line.
    Type: Application
    Filed: November 28, 2022
    Publication date: March 14, 2024
    Inventors: Jiazhen DUAN, Zheng LU, Hongtao LIU, Ruxin SHI, Wei ZHANG, Yuqin SHU, Zhiwei KAN, Yannan CHEN, Xiaoqiang CHEN, Xianming REN
  • Publication number: 20240040481
    Abstract: This application discloses a TWS headset connection method, including: A TWS headset includes a first earbud and a second earbud; the first earbud performs scanning at a first scanning duty cycle, where the first scanning duty cycle is 100%; the second earbud performs advertising; if the first earbud does not find the advertising through scanning, the first earbud determines or judges whether scanning duration of the first earbud exceeds an advertising period of the second earbud; and if the scanning duration of the first earbud exceeds the advertising period of the second earbud, the first earbud is connected to an electronic device that has performed a Bluetooth pairing with the first earbud last time; or if the scanning duration of the first earbud does not exceed the advertising period of the second earbud, the first earbud continues scanning.
    Type: Application
    Filed: December 17, 2021
    Publication date: February 1, 2024
    Inventors: Guanjun NI, Yuhong ZHU, Xiaoqiang ZHANG
  • Publication number: 20240021000
    Abstract: There is provided an image-based information extraction model, method, and apparatus, a device, and a storage medium, which relates to the field of artificial intelligence (AI) technologies, specifically to fields of deep learning, image processing, computer vision technologies, and is applicable to optical character recognition (OCR) and other scenarios. A specific implementation solution involves: acquiring a to-be-extracted first image and a category of to-be-extracted information; and inputting the first image and the category into a pre-trained information extraction model to perform information extraction on the first image to obtain text information corresponding to the category.
    Type: Application
    Filed: February 23, 2023
    Publication date: January 18, 2024
    Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.
    Inventors: Xiameng QIN, Yulin LI, Xiaoqiang ZHANG, Ju HUANG, Qunyi XIE, Kun YAO
  • Publication number: 20230417704
    Abstract: A high duty cycle ion mobility analysis apparatus includes an ion source, first and second ion storage zones, and an ion mobility analyzer. The ion mobility analyzer includes first and second channels containing a gas flow paralleled to an ion migration direction and a direct current electric field in the opposite direction of the gas flow, and the direct current electric fields in the channels are different in strength. In a continuous scanning period, ions that have not reached appropriate scanning conditions or have missed the appropriate scanning conditions and thus are unable to pass through the mobility analyzer are temporarily stored in two independent ion storage zones without being lost to be analyzed by the mobility analyzer until conditions of the scanning period or a next scanning period are appropriate.
    Type: Application
    Filed: September 12, 2023
    Publication date: December 28, 2023
    Inventors: Xiaoqiang ZHANG, Keke WANG, Wenjian SUN
  • Patent number: 11854283
    Abstract: The present disclosure provides a method for visual question answering, which relates to fields of computer vision and natural language processing. The method includes: acquiring an input image and an input question; detecting visual information and position information of each of at least one text region in the input image; determining semantic information and attribute information of each of the at least one text region based on the visual information and the position information; determining a global feature of the input image based on the visual information, the position information, the semantic information, and the attribute information; determining a question feature based on the input question; and generating a predicted answer for the input image and the input question based on the global feature and the question feature. The present disclosure further provides a device for visual question answering, a computer device and a medium.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: December 26, 2023
    Assignee: Beijing Baidu Netcom Science Technology Co., Ltd.
    Inventors: Pengyuan Lv, Xiaoqiang Zhang, Shanshan Liu, Chengquan Zhang, Qiming Peng, Sijin Wu, Hua Lu, Yongfeng Chen
  • Patent number: 11836996
    Abstract: The present disclosure discloses a method and apparatus for recognizing a text. The method comprises: acquiring images of a text area of an input image, the acquired images including a text centerline graph, a text direction offset graph, a text boundary offset graph, and a text character classification graph; extracting coordinates of feature points of a character center from the text centerline graph; sorting the extracted coordinates of the feature points based on the text direction offset graph to obtain a coordinate sequence of the feature points; determining a polygonal bounding box of the text area based on the coordinate sequence of the feature points of the character center and the text boundary offset graph; and determining a classification result of the feature points of the character center, based on the coordinate sequence of the feature points of the character center and the text character classification graph.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: December 5, 2023
    Assignee: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.
    Inventors: Xiaoqiang Zhang, Pengyuan Lv, Shanshan Liu, Chengquan Zhang
  • Patent number: 11810384
    Abstract: The present application discloses a method and an apparatus for recognizing text content, and an electronic device, and relates to a text recognition technique in the field of computer technology. The specific implementation is as follows: acquiring a dial picture; detecting at least one text centerline and a bounding box corresponding to each text centerline in the dial picture; and recognizing text content in each line of text in the dial picture based on the at least one text centerline and the bounding box corresponding to each text centerline.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: November 7, 2023
    Assignee: Beijing Baidu Netcom Science Technology Co., Ltd.
    Inventors: Shanshan Liu, Chengquan Zhang, Xuan Li, Mengyi En, Hailun Xu, Xiaoqiang Zhang
  • Publication number: 20230352292
    Abstract: The invention provides a cycloidal mass spectrometer and a method for adjusting resolution thereof. The spectrometer comprises a set of magnets, providing a magnetic field; two sets of electrode arrays, opposing to each other parallelly, each set of the electrode array including a plurality of strip electrodes arranged parallelly; at least one DC power supply, providing DC voltages to each set of the electrode array to form a DC electric field, the direction of the electric field being perpendicular to the direction of the magnetic field, and the electric field and the magnetic field superimposed on each other to form an electric-magnetic cross-field; an ion injection unit, configured to inject ions into the electric-magnetic cross-field. Said ions travel along a cycloidal trajectory in the electric-magnetic cross-field, in which the magnetic field intensity and the electric field intensity decrease simultaneously within at least part of the region in said cycloidal trajectory.
    Type: Application
    Filed: April 28, 2023
    Publication date: November 2, 2023
    Inventor: Xiaoqiang ZHANG
  • Publication number: 20230325145
    Abstract: An audio control system includes a BLUETOOTH headset, a first electronic device, and a second electronic device. The first electronic device sends a first media audio stream to the BLUETOOTH headset in response to a first operation of a user. The BLUETOOTH headset receives the first media audio stream from the first electronic device, and outputs the first media audio stream. The second electronic device outputs, in response to a second operation of the user, a second media audio stream through a first preset channel other than the BLUETOOTH headset. When the BLUETOOTH headset receives the first operation of the user, it performs one of the following actions: interrupting the second BLUETOOTH connection between the BLUETOOTH headset and the second electronic device or sending a first message to the second electronic device indicating that the BLUETOOTH headset is occupied.
    Type: Application
    Filed: August 17, 2021
    Publication date: October 12, 2023
    Inventors: Guanjun Ni, Xiaoqiang Zhang, Yuhong Zhu, Jiongjin Su
  • Patent number: 11775845
    Abstract: A character recognition method, a character recognition apparatus, an electronic device and a computer readable storage medium are disclosed. The character recognition method includes: determining semantic information and first position information of each individual character recognized from an image; constructing a graph network according to the semantic information and the first position information of each individual character; and determining a character recognition result of the image according to a feature of each individual character calculated by the graph network.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: October 3, 2023
    Assignee: Beijing Baidu Netcom Science and Technology Co., Ltd.
    Inventors: Xiaoqiang Zhang, Chengquan Zhang, Shanshan Liu
  • Publication number: 20230232986
    Abstract: An extendable seating interconnected mechanism and a seating supporting frame, including an interconnected assembly, a seating frame, and a backrest mount, wherein the backrest mount is rotatably connected to the interconnected assembly and the seating frame, respectively; the interconnected assembly includes a mounting plate and a driving link, wherein the mounting plate includes a lateral-plate part and a supporting part; the driving link is rotatably connected between the seating frame and the lateral-plate part; an end of the supporting part is connected to the lateral-plate part; and an opposite end of the supporting part is rotatably connected to the backrest mount.
    Type: Application
    Filed: March 30, 2023
    Publication date: July 27, 2023
    Applicant: Remacro Technology Co., Ltd.
    Inventors: Xiaohong Li, Xiaoqiang Zhang, Zhanzheng Lv
  • Patent number: 11694461
    Abstract: The present application discloses a method and an apparatus for optical character recognition, an electronic device and a storage medium, and relates to the fields of artificial intelligence and deep learning. The method may include: determining, for a to-be-recognized image, a text bounding box of a text area therein, and extracting a text area image from the to-be-recognized image according to the text bounding box; determining a bounding box of text lines in the text area image, and extracting a text-line image from the text area image according to the bounding box; and performing text sequence recognition on the text-line image, and obtaining a recognition result. The application of the solution in the present application can improve a recognition speed and the like.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: July 4, 2023
    Assignee: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.
    Inventors: Mengyi En, Shanshan Liu, Xuan Li, Chengquan Zhang, Hailun Xu, Xiaoqiang Zhang
  • Publication number: 20230196805
    Abstract: The present disclosure provides a character detection method and apparatus, a model training method and apparatus, a device and a storage medium. The specific implementation is: acquiring a training sample, where the training sample includes a sample image and a marked image, and the marked image is an image obtained by marking a text instance in the sample image; inputting the sample image into a character detection model, to obtain segmented images and image types of the segmented images output by the character detection model, where the image type indicates that the segmented image includes a text instance, or the segmented image does not include a text instance; and adjusting a parameter of the character detection model according to the segmented images, the image types of the segmented images and the marked image.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 22, 2023
    Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.
    Inventors: Ju HUANG, Xiaoqiang ZHANG, Xiameng QIN, Chengquan ZHANG, Kun YAO
  • Publication number: 20230106873
    Abstract: A text extraction method and a text extraction model training method are provided. The present disclosure relates to the technical field of artificial intelligence, in particular to the technical field of computer vision. An implementation of the method comprises: obtaining a visual encoding feature of a to-be-detected image; extracting a plurality of sets of multimodal features from the to-be-detected image, wherein each set of multimodal features includes position information of one detection frame extracted from the to-be-detected image, a detection feature in the detection frame and first text information in the detection frame; and obtaining second text information matched with a to-be-extracted attribute based on the visual encoding feature, the to-be-extracted attribute and the plurality of sets of multimodal features, wherein the to-be-extracted attribute is an attribute of text information needing to be extracted.
    Type: Application
    Filed: November 28, 2022
    Publication date: April 6, 2023
    Inventors: Xiameng QIN, Xiaoqiang ZHANG, Ju HUANG, Yulin LI, Qunyi XIE, Kun YAO, Junyu HAN
  • Publication number: 20230046612
    Abstract: An ion mobility spectrometry-mass spectrometry combined analysis device includes an ionization source producing target analyte ions; an ion mobility filter receiving at least a part of the target analyte ions from the ionization source and operating in a sub-atmospheric environment to select ions within a specified mobility range from the target analyte ions to pass; and a mass filter connected to the rear stage of the ion mobility filter selecting ions in a specified mass-to-charge ratio range from the ions within the specified mobility range to pass. The ion mobility spectrometry-mass spectrometry combined device can separate the target ions based on a collision cross section under the combined action of a scanning electric field and an external gas flow, and operate at low gas pressure, which improves the efficiency of target analysis and an intra-spectrum dynamic range, and perform highly reliable and accurate quantitative analysis on specific target ions.
    Type: Application
    Filed: August 8, 2022
    Publication date: February 16, 2023
    Inventors: Wenjian SUN, Kuo-Feng TSENG, Keke WANG, Xiaoqiang ZHANG
  • Patent number: 11543695
    Abstract: The present disclosure provides a light-adjusting glass and a manufacturing method thereof, and a glass assembly, and belongs to the field of display glass technology. The light-adjusting glass of the present disclosure includes at least one light-adjusting module; the light-adjusting module includes a first substrate and a second substrate opposite to each other, and a dye liquid crystal layer between the first substrate and the second substrate; wherein liquid crystal molecules in the dye liquid crystal layer deflect under a control of an electric field between the first substrate and the second substrate, to control a transmittance of light; wherein the dye liquid crystal layer includes a polymer network, which is configured such that when the electric field between the first substrate and the second substrate changes, twisting degrees of the liquid crystal molecules are identical, and twisting degrees of dye molecules are identical.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: January 3, 2023
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Xiaojuan Wu, Xiaoqiang Zhang, Zhiqiang Zhao, Wei Zhao, Chunlei Wang, Hongliang Yuan, Jian Wang, Jing Yu
  • Patent number: 11508565
    Abstract: An ion guide device includes a plurality of ring electrodes disposed in parallel, wherein each ring electrode includes at least 4 electrode units separated from each other, a channel for ion transmission is formed inside the plurality of ring electrodes, and an arrangement direction of the plurality of ring electrodes defines an axial direction of ion transmission; an radio-frequency voltage source, for applying out-of-phase radio-frequency voltages on the neighboring electrode units belonging to the same ring electrode, and applying in-phase radio frequency voltages on a neighboring electrode units along the axial direction, thereby forming an radio-frequency multipole field that confine ions in the ion guide device; and a direct-current voltage source, wherein the ions are transmitted off-axis and focused to a position closer to an inner surface of the ring electrode under a combined action of the radio-frequency voltage and the direct-current voltage.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: November 22, 2022
    Assignee: SHIMADZU CORPORATION
    Inventors: Keke Wang, Xiaoqiang Zhang, Wenjian Sun
  • Publication number: 20220369394
    Abstract: This application discloses a Bluetooth reconnection method, and relates to the field of short-range wireless communications technologies. The method includes: When a charging case is closed, a first earbud breaks a Bluetooth connection, where the first earbud stores a Bluetooth address of a terminal and a Bluetooth address of a second earbud. When the charging case is opened, the charging case accommodates only the first earbud, and a first preset condition is met, the first earbud sends a first paging request to the second earbud based on the Bluetooth address of the second earbud. The first preset condition is that the Bluetooth connection includes a Bluetooth connection between the first earbud and the second earbud. In this way, reconnection duration of the first earbud when the charging case is opened can be reduced.
    Type: Application
    Filed: September 3, 2020
    Publication date: November 17, 2022
    Inventors: Guanjun NI, Yuhong ZHU, Jianxin LIN, Xiaoqiang ZHANG, Jiongjin SU
  • Publication number: 20220341874
    Abstract: A high duty cycle ion mobility analysis apparatus includes an ion source, first and second ion storage zones, and an ion mobility analyzer. The ion mobility analyzer includes first and second channels containing a gas flow coaxial with an ion migration direction and a direct current electric field in the opposite direction of the gas flow, and the direct current electric fields in the channels are different in strength. In a continuous scanning period, ions that have not reached appropriate scanning conditions or have missed the appropriate scanning conditions and thus are unable to pass through the mobility analyzer are temporarily stored in two independent ion storage zones without being lost to be analyzed by the mobility analyzer until conditions of the scanning period or a next scanning period are appropriate.
    Type: Application
    Filed: April 4, 2022
    Publication date: October 27, 2022
    Inventors: Xiaoqiang Zhang, Keke Wang, Wenjian Sun
  • Patent number: 11378560
    Abstract: A data acquisition and analysis method for a mass spectrometer includes providing at least one ion source for generating ions, the generated ions containing ions of a substance to be analyzed; dividing the full mass-to-charge ratio range of the ions of the substance into several mass-to-charge ratio windows, feeding ions corresponding to different mass-to-charge ratio windows into a collision cell to fragment at least part of the corresponding ions, and recording mass spectra of the ions passing through the collision cell as corresponding product ion spectra; obtaining a mass-to-charge ratio window corresponding to the product ion spectra obtained by the searching; within the mass-to-charge ratio range of the obtained mass-to-charge ratio window, obtaining ion peaks from the product ion spectra obtained by the searching; and determining whether ions corresponding to the obtained ion peaks are precursor ions corresponding to the product ion spectra obtained by the searching.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: July 5, 2022
    Assignee: SHIMADZU CORPORATION
    Inventors: Yunqing Huang, Wenjian Sun, Xiaoqiang Zhang