Patents by Inventor Zhengang, Li

Zhengang, Li 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: 20230075643
    Abstract: BPDNN is a general end-to-end framework to achieve real-time DNN execution on mobile devices. BPDNN supports both CNNs and RNNs. It is based on a novel, fine-grained structured BCR pruning to obtain high execution efficiency without compromising accuracy. BPDNN has two main stages: a compiler-based stage to generate optimized execution codes by leveraging BCR pruning information, and an optimization framework to determine the block size and other hyperparameters based on a decoupling strategy.
    Type: Application
    Filed: February 16, 2021
    Publication date: March 9, 2023
    Inventors: Yanzhi Wang, Zhengang Li, Bin Ren, Wei Niu
  • Publication number: 20230056315
    Abstract: A recurrent neural network (RNN) acceleration framework leverages both a block-based pruning approach and compiler optimizations to accelerate RNN inference on mobile devices.
    Type: Application
    Filed: January 25, 2021
    Publication date: February 23, 2023
    Inventors: Yanzhi Wang, Peiyan Dong, Zhengang Li, Bin Ren, Wei Niu
  • Patent number: 10354117
    Abstract: The present disclosure provides a fingerprint identification method and apparatus.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: July 16, 2019
    Assignee: BYD COMPANY LIMITED
    Inventors: Zhengang Li, Kunping Xu, Yun Yang
  • Patent number: 10346664
    Abstract: A fingerprint detection circuit and an electronic device are provided. The fingerprint detection circuit is configured to apply an excitation signal to a finger so as to generate finger capacitors, and the fingerprint detection circuit includes: a signal amplifier having a negative input terminal connected with one of the finger capacitors, a positive input terminal connected with a ground terminal, and an output terminal to output an output voltage according to a capacitance value of the one of the finger capacitors; a capacitor connected between the negative terminal and the output terminal of the signal amplifier; a rheostat; and a switch unit connected with the rheostat in series and configured to control the rheostat to be connected with the capacitor in parallel, such that the output voltage has a non-linear relationship with the capacitance value of the one of the finger capacitors.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: July 9, 2019
    Assignee: BYD COMPANY LIMITED
    Inventors: Zhengang Li, Kunping Xu, Yun Yang
  • Patent number: 10309759
    Abstract: The present disclosure provides a method and an apparatus for adjusting an excitation voltage of a fingerprint detection chip and a fingerprint detection chip.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: June 4, 2019
    Assignee: BYD COMPANY LIMITED
    Inventors: Zhengang Li, Kunping Xu, Yun Yang
  • Patent number: 10248829
    Abstract: The present disclosure provides a fingerprint detection circuit and method. The circuit includes a fingerprint collecting module and a processing module. The fingerprint collecting module includes a plurality of collecting units, and each collecting unit has a regulation voltage and is configured to output a first voltage or a second voltage according to a capacitance value of one of ridge capacitors, a capacitance value of one of ridge capacitors and the regulation voltage. The processing module is configured to amplify the first and second voltages by a predetermined factor, to calculate a difference between the amplified first and second voltages, and to determine whether the difference is greater than or equal to the predetermined threshold. If no, the processing module adjusts at least one parameter, and configures the fingerprint detection circuit using at least one adjusted parameter.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: April 2, 2019
    Assignee: BYD COMPANY LIMITED
    Inventors: Zhengang Li, Kunping Xu, Yun Yang
  • Publication number: 20180299248
    Abstract: The present disclosure provides a method and an apparatus for adjusting an excitation voltage of a fingerprint detection chip and a fingerprint detection chip.
    Type: Application
    Filed: June 8, 2016
    Publication date: October 18, 2018
    Inventors: Zhengang LI, Kunping XU, Yun YANG
  • Publication number: 20180032784
    Abstract: The present disclosure provides a fingerprint identification method and apparatus.
    Type: Application
    Filed: January 5, 2016
    Publication date: February 1, 2018
    Inventors: Zhengang LI, Kunping XU, Yun YANG
  • Publication number: 20180032780
    Abstract: A fingerprint detection circuit and an electronic device are provided. The fingerprint detection circuit is configured to apply an excitation signal to a finger so as to generate a finger capacitor, and the fingerprint detection circuit includes: a signal amplifier having a negative input terminal connected with the finger capacitor, a positive input terminal connected with a voltage reference terminal, and an output terminal to output an output voltage according to a capacitance value of the finger capacitor; a capacitor; and a switch unit connected with the negative input terminal and the output terminal of the signal amplifier respectively, and configured to control the capacitor to be connected between the negative input terminal and the output terminal of the signal amplifier, such that the output voltage has a non-linear relationship with the capacitance value of the finger capacitor.
    Type: Application
    Filed: January 5, 2016
    Publication date: February 1, 2018
    Inventors: Zhengang LI, Kunping XU, Yun YANG
  • Publication number: 20180025198
    Abstract: The present disclosure provides a fingerprint detection circuit and method. The circuit includes a fingerprint collecting module and a processing module. The fingerprint collecting module includes a plurality of collecting units, and each collecting unit has a regulation voltage and is configured to output a first voltage or a second voltage according to a capacitance value of one of ridge capacitors, a capacitance value of one of ridge capacitors and the regulation voltage. The processing module is configured to amplify the first and second voltages by a predetermined factor, to calculate a difference between the amplified first and second voltages, and to determine whether the difference is greater than or equal to the predetermined threshold. If no, the processing module adjusts at least one parameter, and configures the fingerprint detection circuit using at least one adjusted parameter.
    Type: Application
    Filed: January 5, 2016
    Publication date: January 25, 2018
    Inventors: Zhengang LI, Kunping XU, Yun YANG
  • Publication number: 20180005000
    Abstract: A fingerprint detection circuit and an electronic device are provided. The fingerprint detection circuit is configured to apply an excitation signal to a finger so as to generate finger capacitors, and the fingerprint detection circuit includes: a signal amplifier having a negative input terminal connected with one of the finger capacitors, a positive input terminal connected with a ground terminal, and an output terminal to output an output voltage according to a capacitance value of the one of the finger capacitors; a capacitor connected between the negative terminal and the output terminal of the signal amplifier; a rheostat; and a switch unit connected with the rheostat in series and configured to control the rheostat to be connected with the capacitor in parallel, such that the output voltage has a non-linear relationship with the capacitance value of the one of the finger capacitors.
    Type: Application
    Filed: January 5, 2016
    Publication date: January 4, 2018
    Inventors: Zhengang LI, Kunping XU, Yun YANG
  • Patent number: 9459739
    Abstract: An induction unit, a touch detecting assembly, and a touch sensitive device are provided. The touch sensitive device comprises: a substrate (100); a plurality of induction units (200) not intersecting with each other, and a detecting module (300) connected with the first electrodes (210) and the second electrodes (220) respectively. The induction unit (200) comprises a first electrode (210), a second electrode (220), a plurality of first structures (230) and a plurality of second structures (240). The plurality of first structures (230) are connected end to end via the plurality of second structures (240). The detecting module (300) is configured to apply a level signal to the first electrodes (210) and/or the second electrodes (220) to charge a self capacitor, to calculate a ratio between a first resistor and a second resistor, and to determine a touch position in a first direction and a touch position in a second direction.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: October 4, 2016
    Assignees: SHENZHEN BYD AUTO R&D COMPANY LIMITED, BYD COMPANY LIMITED
    Inventors: Zhengang Li, Chen Huang, Yun Yang
  • Patent number: 9411476
    Abstract: A touch detecting assembly, a touch sensitive device, and a portable electronic apparatus are provided. The touch detecting assembly (100) comprises: a substrate (1); and a plurality of induction units (2) disposed on the substrate (1) and not intersecting with each other, each induction unit (2) comprising an induction body (20), and a first electrode (21) and a second electrode (22) connected with the induction body (20) respectively. Each induction body (20) has a plurality of empty parts (24), and the plurality of empty parts (24) are arranged in a predetermined pattern to define a current passage (25) for increasing a resistance between the first electrode (21) and the second electrode (22).
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: August 9, 2016
    Assignees: SHENZHEN BYD AUTO R&D COMPANY LIMITED, BYD COMPANY LIMITED
    Inventors: Zhengang Li, Chen Huang, Yun Yang
  • Publication number: 20140198265
    Abstract: A touch detecting assembly, a touch sensitive device, and a portable electronic apparatus are provided. The touch detecting assembly (100) comprises: a substrate (1); and a plurality of induction units (2) disposed on the substrate (1) and not intersecting with each other, each induction unit (2) comprising an induction body (20), and a first electrode (21) and a second electrode (22) connected with the induction body (20) respectively. Each induction body (20) has a plurality of empty parts (24), and the plurality of empty parts (24) are arranged in a predetermined pattern to define a current passage (25) for increasing a resistance between the first electrode (21) and the second electrode (22).
    Type: Application
    Filed: July 26, 2012
    Publication date: July 17, 2014
    Applicants: BYD COMPANY LIMITED, Shenzhen BYD Auto R&D Company Limited
    Inventors: Zhengang Li, Chen Huang, Yun Yang
  • Publication number: 20140168159
    Abstract: An induction unit, a touch detecting assembly, and a touch sensitive device are provided. The touch sensitive device comprises: a substrate (100); a plurality of induction units (200) not intersecting with each other, and a detecting module (300) connected with the first electrodes (210) and the second electrodes (220) respectively. The induction unit (200) comprises a first electrode (210), a second electrode (220), a plurality of first structures (230) and a plurality of second structures (240). The plurality of first structures (230) are connected end to end via the plurality of second structures (240). The detecting module (300) is configured to apply a level signal to the first electrodes (210) and/or the second electrodes (220) to charge a self capacitor, to calculate a ratio between a first resistor and a second resistor, and to determine a touch position in a first direction and a touch position in a second direction.
    Type: Application
    Filed: July 26, 2012
    Publication date: June 19, 2014
    Applicants: BYD COMPANY LIMITED, ZHENZHEN BYD AUTO R&D COMPANY LIMITED
    Inventors: Zhengang Li, Chen Huang, Yun Yang
  • Patent number: 5217417
    Abstract: A device for variable control of the sweeping angle of a fan which includes a worm gear cooperating with a planet gear and a sun gear to provide variable sweep angle with a clutch mechanism to allow for the disengagement of the drive mechanism while varying sweep angle.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: June 8, 1993
    Inventor: Zhengang, Li