Patents by Inventor Jianmin Bai

Jianmin Bai 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).

  • Patent number: 11514090
    Abstract: The present disclosure provides a method for ordering comments, and apparatus, device and computer storage medium thereof, which relates to the technical field of 5 big data. A specific implementation solution is as follows: obtaining comments data, ordering the comments based on basic attributes of the comment to obtain a first ordering result, and establishing an index for the first ordering result; in response to obtaining an event of the user triggering display of the comments, obtaining the first ordering result through the index, and performing ordering adjustment on the first 10 ordering result based on the user's feature data to obtain a second ordering result which serves as a basis for displaying the comments to the user. The present disclosure can meet the user's personalized needs for comment ordering.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: November 29, 2022
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Jianmin Bai, Junling Liu, Kechen Lin
  • Publication number: 20210334297
    Abstract: The present disclosure provides a method for ordering comments, and apparatus, device and computer storage medium thereof, which relates to the technical field of big data. A specific implementation solution is as follows: obtaining comments data, ordering the comments based on basic attributes of the comment to obtain a first ordering result, and establishing an index for the first ordering result; in response to obtaining an event of the user triggering display of the comments, obtaining the first ordering result through the index, and performing ordering adjustment on the first ordering result based on the user's feature data to obtain a second ordering result which serves as a basis for displaying the comments to the user. The present disclosure can meet the user's personalized needs for comment ordering.
    Type: Application
    Filed: March 25, 2021
    Publication date: October 28, 2021
    Inventors: Jianmin Bai, Junling Liu, Kechen Lin
  • Patent number: 10288700
    Abstract: A magnetic head for detecting a magnetic field on the surface of a magnetic pattern based on a magneto-resistance technology comprises a support (1) and a PCB (Printed Circuit Board) (5) arranged on the support (1), and further comprises horizontal excitation structures (20, 21) used for generating a magnetic field parallel to the surface of the magnetic head; and a magnetic field detection component (4) based on magneto-resistance (MR) elements (R1-R4), the magnetic field detection component is used for detecting the distribution of vertical components of a leakage magnetic field on the surface of a magnetic pattern. The magnetic head can effectively detect magnetic patterns made of soft magnetic materials or hard magnetic materials. The soft magnetic material is magnetized in an in-plane manner by means of the horizontal excitation structures (20, 21), so as to generate a specific leakage magnetic field on the surface of a magnetic pattern.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 14, 2019
    Assignee: Wuxi Ler Technology Co., Ltd.
    Inventor: Jianmin Bai
  • Patent number: 10060941
    Abstract: The present invention discloses a magnetoresistive gear tooth sensor, which includes a magnetoresistive sensor chip and a permanent magnet. The magnetic sensor chip is comprised of at least one magnetoresistive sensor bridge, and each arm of the sensor bridge has at least one MTJ element group. The magnetoresistive gear tooth sensor has good temperature stability, high sensitivity, low power consumption, good linearity, wide linear range, and a simple structure. Additionally, the magnetoresistive gear tooth sensor has a concave soft ferromagnetic flux concentrator, which can be used to reduce the component of the magnetic field generated by the permanent magnet along the sensing direction of the MTJ sensor elements, enabling a wide linear range. Because it is arranged as a gradiometer, the magnetoresistive gear tooth sensor bridge is not affected by stray magnetic field; it is only affected by the gradient magnetic field generated by gear teeth in response to the permanent magnet bias.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: August 28, 2018
    Assignee: MultiDimension Technology Co., Ltd.
    Inventors: Jianmin Bai, James Geza Deak, Hua Iv, Weifeng Shen
  • Patent number: 9739850
    Abstract: Push-pull half-bridge magnetoresistive switch, comprising two magnetic sensor chips, each magnetic sensor chip having a magnetic induction resistor and a magnetic induction resistor electrical connection pad. The two magnetic sensor chips are electrically interconnected and have opposite and parallel directions of induction, thus forming the push-pull half-bridge circuit. The magnetic induction resistor comprises one or a plurality of magnetoresistive elements connected in series. The magnetic induction resistor pads are located at adjacent edges of the magnetic sensor chips, and each pad may accommodate the welding of at least two bonding wires. The magnetoresistive switch may improve the sensitivity of a sensor, and decrease output voltage deviation and output voltage temperature drift, which is beneficial for decreasing the volume and increasing the performance of the switch sensor.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: August 22, 2017
    Assignee: MultiDimension Technology Co., Ltd.
    Inventors: Jianmin Bai, Weifeng Shen, Xiaofeng Lei, Xiaojun Zhang, Xiaojun Zhong
  • Patent number: 9678178
    Abstract: Disclosed is a magnetoresistive magnetic field gradient sensor, comprising a substrate, a magnetoresistive bridge and a permanent magnet respectively disposed on the substrate; the magnetoresistive bridge comprises two or more magnetoresistive arms; each magnetoresistive arm consists of one or more magnetoresistive elements; each magnetoresistive element is provided with a magnetic pinning layer; the magnetic pinning layers of all the magnetoresistive elements have the same magnetic moment direction; the permanent magnet is disposed adjacent to each magnetoresistive arm to provide a bias field, and to zero the offset of the response curve of the magnetoresistive element; the magnetoresistive gradiometer includes wire bonding pads that can be electrically interconnected using wire bonding to an ASIC or to the lead frame of a semiconductor chip package.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: June 13, 2017
    Assignee: MultiDimension Technology Co., Ltd.
    Inventors: Jianmin Bai, James Geza Deak, Mingfeng Liu, Weifeng Shen
  • Patent number: 9465056
    Abstract: A current sensor comprises a sensor bridge, with magnetic tunnel junction (MTJ) elements, a MTJ temperature compensation resistor, and a current lead integrated onto a chip. The current lead is positioned close to the sensor bridge, and it is used to carry the test current. A permanent magnet is arranged at the periphery of the MTJ temperature compensation resistor. The permanent magnet rigidly aligns the magnetization direction of the free layer of the MTJ temperature compensation resistor anti-parallel to the magnetization direction of a pinning layer. The sensor bridge is connected in series with the MTJ temperature compensation resistor to temperature compensate the sensor bridge. A magnetic field generated by the test current produces an output voltage at the output of the temperature compensated sensor bridge that is proportional to the test current value.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: October 11, 2016
    Assignee: MultiDimension Technology Co., Ltd.
    Inventors: Liansheng Han, Jianmin Bai, Wei Li, Songsheng Xue
  • Publication number: 20160084923
    Abstract: A magnetic head for detecting a magnetic field on the surface of a magnetic pattern based on a magneto-resistance technology comprises a support (1) and a PCB (Printed Circuit Board) (5) arranged on the support (1), and further comprises horizontal excitation structures (20, 21) used for generating a magnetic field parallel to the surface of the magnetic head; and a magnetic field detection component (4) based on magneto-resistance (MR) elements (R1-R4), the magnetic field detection component is used for detecting the distribution of vertical components of a leakage magnetic field on the surface of a magnetic pattern. The magnetic head can effectively detect magnetic patterns made of soft magnetic materials or hard magnetic materials. The soft magnetic material is magnetized in an in-plane manner by means of the horizontal excitation structures (20, 21), so as to generate a specific leakage magnetic field on the surface of a magnetic pattern.
    Type: Application
    Filed: March 17, 2014
    Publication date: March 24, 2016
    Applicant: WUXI LER TECHNOLOGY CO., LTD.
    Inventor: Jianmin Bai
  • Publication number: 20160041238
    Abstract: Push-pull half-bridge magnetoresistive switch, comprising two magnetic sensor chips, each magnetic sensor chip having a magnetic induction resistor and a magnetic induction resistor electrical connection pad. The two magnetic sensor chips are electrically interconnected and have opposite and parallel directions of induction, thus forming the push-pull half-bridge circuit. The magnetic induction resistor comprises one or a plurality of magnetoresistive elements connected in series. The magnetic induction resistor pads are located at adjacent edges of the magnetic sensor chips, and each pad may accommodate the welding of at least two bonding wires. The magnetoresistive switch may improve the sensitivity of a sensor, and decrease output voltage deviation and output voltage temperature drift, which is beneficial for decreasing the volume and increasing the performance of the switch sensor.
    Type: Application
    Filed: April 1, 2014
    Publication date: February 11, 2016
    Inventors: Jianmin BAI, Weifeng SHEN, Xiaofeng LEI, Xiaojun ZHANG, Xiaojun ZHONG
  • Publication number: 20150145504
    Abstract: The present invention discloses a magnetoresistive gear tooth sensor, which includes a magnetoresistive sensor chip and a permanent magnet. The magnetic sensor chip is comprised of at least one magnetoresistive sensor bridge, and each arm of the sensor bridge has at least one MTJ element group. The magnetoresistive gear tooth sensor has good temperature stability, high sensitivity, low power consumption, good linearity, wide linear range, and a simple structure. Additionally, the magnetoresistive gear tooth sensor has a concave soft ferromagnetic flux concentrator, which can be used to reduce the component of the magnetic field generated by the permanent magnet along the sensing direction of the MTJ sensor elements, enabling a wide linear range. Because it is arranged as a gradiometer, the magnetoresistive gear tooth sensor bridge is not affected by stray magnetic field; it is only affected by the gradient magnetic field generated by gear teeth in response to the permanent magnet bias.
    Type: Application
    Filed: June 4, 2013
    Publication date: May 28, 2015
    Inventors: Jianmin Bai, James Geza Deak, Hua lv, Weifeng Shen
  • Publication number: 20150130455
    Abstract: Disclosed is a magnetoresistive magnetic field gradient sensor, comprising a substrate, a magnetoresistive bridge and a permanent magnet respectively disposed on the substrate; the magnetoresistive bridge comprises two or more magnetoresistive arms; each magnetoresistive arm consists of one or more magnetoresistive elements; each magnetoresistive element is provided with a magnetic pinning layer; the magnetic pinning layers of all the magnetoresistive elements have the same magnetic moment direction; the permanent magnet is disposed adjacent to each magnetoresistive arm to provide a bias field, and to zero the offset of the response curve of the magnetoresistive element; the magnetoresistive gradiometer includes wire bonding pads that can be electrically interconnected using wire bonding to an ASIC or to the lead frame of a semiconductor chip package.
    Type: Application
    Filed: January 29, 2013
    Publication date: May 14, 2015
    Applicant: JIangsu Multidimension Technology Co., Ltd.
    Inventors: Jianmin Bai, James Geza Deak, Mingfeng Liu, Weifeng Shen
  • Publication number: 20140327437
    Abstract: This patent discloses a current sensor comprising a sensor bridge (14), which consists of several magnetic tunnel junction (MTJ) elements (R11, R12, R21, R22), a MTJ temperature compensation resistor (16), and a current lead (20), which are integrated onto the same chip. The current lead (20) is positioned close to the sensor bridge (14), and it is used to carry the test current (19). A permanent magnet (17) is arranged at the periphery of the MTJ temperature compensation resistor (16). The permanent magnet (17) rigidly aligns the magnetization direction (7) of the free layer of the MTJ temperature compensation resistor (16) anti-parallel to the magnetization direction (8) of a pinning layer; so that the MTJ temperature compensation resistor (16) remains in a high resistance state providing a resistance value that changes as a function of temperature. The sensor bridge (14) is connected in series with the MTJ temperature compensation resistor (16) in order to temperature compensate the sensor bridge (14).
    Type: Application
    Filed: October 30, 2012
    Publication date: November 6, 2014
    Inventors: Liansheng Han, Jianmin Bai, Wei Li, Songsheng Xue