Patents by Inventor Mengde Wang

Mengde Wang 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: 11949321
    Abstract: An electronic control system provides selectable linear and pulse-width modulated (PWM) operation with reduced disruption when changing from PWM operation to linear operation. The system includes an output stage that has a push-pull driver coupled to the load, which may be a motor, a haptic device, or other device requiring current-mode control. The system also includes a pulse-width modulated (PWM) driver for providing pulse-width modulated drive signals to gates of the transistors of the output stage when a pulse-width modulated mode is selected, and a linear amplifier stage that provides a linear analog signal to the gates of the transistors when a linear mode is selected. A pre-charging circuit pre-charges the gates during a pre-charge cycle that is initiated when the operating mode changes from the PWM operating more to the linear operating mode.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: April 2, 2024
    Assignee: CIRRUS LOGIC, INC.
    Inventors: Vamsikrishna Parupalli, Nishant Jain, Mengde Wang
  • Publication number: 20230332277
    Abstract: The present disclosure discloses an aluminum alloy, based on a total mass of the aluminum alloy, including: 9-12% Si; 3.0-5.0% Zn; 1.5-2.6% Cu; 0.4-0.9% Mn; 0.2-0.6% Mg; 0.1-0.25% Fe; 0.03-0.35% Zr; 0.05-0.2% Ti; 0.005-0.04% Sr; 0.01-0.02% Ga; 0.005-0.01% Mo; 0.001-0.02% Cr; 0.005-0.3% Ni; 78.01-85.624% Al; and an impurity element.
    Type: Application
    Filed: June 21, 2023
    Publication date: October 19, 2023
    Inventors: Qiang GUO, Mengde WANG, Wei AN
  • Publication number: 20230193429
    Abstract: An aluminum alloy and application thereof are disclosed. Based on a total mass of the aluminum alloy, the aluminum alloy includes: 7%-11% Si, 0.4%-1.0% Fe, 0.001%-0.2% Mg, 0.001%-0.2% Cu, 0.001%-0.2% Zn, 0.005%-0.1% Mn, 0.01%-0.06% Sr, 0.003%-0.05% B, 0.01%-0.02% Ga, 0.001%-0.01% Mo, 0.001%-0.2% Ce, 0.0003%-0.02% La, and balanced by aluminum and impurity elements, where a total amount of the impurity elements is less than 0.1%.
    Type: Application
    Filed: February 23, 2023
    Publication date: June 22, 2023
    Inventors: Qiang GUO, Mengde WANG, Wei AN, Jingsong FU
  • Patent number: 11649528
    Abstract: The present disclosure relates to a copper based microcrystalline alloy and a preparation method thereof, and an electronic product. In percentage by weight and based on the total amount of the copper based microcrystalline alloy, the copper based microcrystalline alloy includes: 30-60 wt % of Cu; 25-40 wt % of Mn; 4-6 wt % of Al; 10-17 wt % of Ni; 0.01-10 wt % of Si; and 0.001-0.03% of Be.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: May 16, 2023
    Assignee: BYD COMPANY LIMITED
    Inventors: Qing Gong, Qiang Guo, Mengde Wang, Wei An
  • Publication number: 20230128810
    Abstract: An electronic control system provides selectable linear and pulse-width modulated (PWM) operation with reduced disruption when changing from PWM operation to linear operation. The system includes an output stage that has a push-pull driver coupled to the load, which may be a motor, a haptic device, or other device requiring current-mode control. The system also includes a pulse-width modulated (PWM) driver for providing pulse-width modulated drive signals to gates of the transistors of the output stage when a pulse-width modulated mode is selected, and a linear amplifier stage that provides a linear analog signal to the gates of the transistors when a linear mode is selected. A pre-charging circuit pre-charges the gates during a pre-charge cycle that is initiated when the operating mode changes from the PWM operating more to the linear operating mode.
    Type: Application
    Filed: October 26, 2021
    Publication date: April 27, 2023
    Inventors: Vamsikrishna Parupalli, Nishant Jain, Mengde Wang
  • Publication number: 20230002864
    Abstract: An aluminum alloy and a preparation method thereof are provided. In percentage by mass, the aluminum alloy includes: 8-11% of Si, 2-3% of Cu, 0.7-1.1% of Mg, 0.7-1.5% of Mn, 0.01-0.015% of Sr, 0.01-0.015% of Cr, 0-0.4% of Fe, 0.02-0.1% of Ti, 0.01-0.02% of Ga, 0.004-0.02% of B, 0-2% of Zn, and the balance of Al and less than 0.1% of other elements.
    Type: Application
    Filed: March 26, 2020
    Publication date: January 5, 2023
    Inventors: Qiang GUO, Mengde WANG, Wei AN
  • Publication number: 20220380869
    Abstract: An aluminum alloy and applications thereof are disclosed. Based on the total weight of the aluminum alloy, the aluminum alloy includes: 8-11% of Si, 2-4% of Cu, 0.6-4% of Zn, 0.65-1.1% of Mn, 0.35-0.65% of Mg, 0.001-0.05% of Cr, 0.01-0.03% of Sr, 0.08-0.12% of Ti, 0.008-0.02% of B, 0.1-0.3% of Fe, 0.01-0.02% of Ga, 0.008-0.015% of Sn, and the balance of Al and less than 0.1% of other elements.
    Type: Application
    Filed: March 24, 2020
    Publication date: December 1, 2022
    Inventors: Qiang GUO, Mengde WANG, Tao YANG, Rong WANG, Wei AN, Jingsong FU
  • Patent number: 11174533
    Abstract: The disclosure relates to a Cu-based microcrystal alloy and a preparation method thereof. Through being measured in percentage by mass, the Cu-based microcrystal alloy provided by the disclosure includes 20 to 30 percent of Mn, 0.01 to 10 percent of Al, 5 to 10 percent of Ni, 0.3 to 1.5 percent of Ti, 0 to 1.5 percent of Zr, 0.05 to 2 percent of Si and 45 to 74.64 percent of Cu.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: November 16, 2021
    Assignee: BYD COMPANY LIMITED
    Inventors: Qiang Guo, Mengde Wang, Wei An
  • Patent number: 11115046
    Abstract: A system may include an output stage for driving a load at an output of the output stage, a pulse-width modulation mode path configured to pre-drive the output stage in a first mode of operation, a linear mode path configured to pre-drive the output stage in a second mode of operation and a loop filter coupled at its input to the output of the output stage and coupled at its output to both of the pulse-width modulation mode path and the linear mode path. The pulse-width modulation mode path and the linear mode path may be configured such that a first transfer function between the output of the loop filter and the output of the output stage is substantially equivalent to a second transfer function between the output of the loop filter and the output of the output stage.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: September 7, 2021
    Assignee: Cirrus Logic, Inc.
    Inventors: Vamsikrishna Parupalli, Mark May, Saurabh Singh, Ramya Balasundaram, Mengde Wang, Eric B. Smith
  • Publication number: 20210054481
    Abstract: The present disclosure relates to a copper based microcrystalline alloy and a preparation method thereof, and an electronic product. In percentage by weight and based on the total amount of the copper based microcrystalline alloy, the copper based microcrystalline alloy includes: 30-60 wt % of Cu; 25-40 wt % of Mn; 4-6 wt % of Al; 10-17 wt % of Ni; 0.01-10 wt % of Si; and 0.001-0.03% of Be.
    Type: Application
    Filed: December 24, 2018
    Publication date: February 25, 2021
    Inventors: Qing GONG, Qiang GUO, Mengde WANG, Wei AN
  • Patent number: 10756709
    Abstract: A system may include a driver for driving an output signal to a load, a pre-driver for driving a pre-driver signal to the driver, the pre-driver having a variable drive strength, and a controller configured to control the variable drive strength based on at least one measured physical quantity to compensate for variation of an output signal edge rate due to variations in the at least one measured physical quantity.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: August 25, 2020
    Assignee: Cirrus Logic, Inc.
    Inventors: Mengde Wang, Akhilesh Persha, Eric B. Smith, Vamsikrishna Parupalli
  • Publication number: 20200157659
    Abstract: The disclosure relates to a Cu-based microcrystal alloy and a preparation method thereof. Through being measured in percentage by mass, the Cu-based microcrystal alloy provided by the disclosure includes 20 to 30 percent of Mn, 0.01 to 10 percent of Al, 5 to 10 percent of Ni, 0.3 to 1.5 percent of Ti, 0 to 1.5 percent of Zr, 0.05 to 2 percent of Si and 45 to 74.64 percent of Cu.
    Type: Application
    Filed: July 2, 2018
    Publication date: May 21, 2020
    Inventors: Qiang GUO, Mengde WANG, Wei AN
  • Publication number: 20190379389
    Abstract: A system may include an output stage for driving a load at an output of the output stage, a pulse-width modulation mode path configured to pre-drive the output stage in a first mode of operation, a linear mode path configured to pre-drive the output stage in a second mode of operation and a loop filter coupled at its input to the output of the output stage and coupled at its output to both of the pulse-width modulation mode path and the linear mode path.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 12, 2019
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Vamsikrishna PARUPALLI, Mark MAY, Saurabh SINGH, Ramya BALASUNDARAM, Mengde WANG, Eric B. SMITH
  • Publication number: 20190285438
    Abstract: Embodiments described herein relate to methods and apparatus for separating an interference signal from a carrier signal for sensing a capacitance of a capacitive sensor. An analog front end, AFE, circuit for a capacitive sensor comprises an input configured to receive an input signal from the capacitive sensor, wherein the input signal comprises a carrier signal and an interference signal; a first signal path between the input and an output configured to output an output signal, wherein the first signal path is configured with a first impedance at a frequency of the interference signal; and a second signal path coupled to the input, wherein the second signal path is configured with a second impedance at the frequency of the interference signal, wherein the second impedance is lower than the first impedance so as to reduce a voltage swing caused by the interference signal at the input.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Mengde WANG, Zhong YOU
  • Publication number: 20070134709
    Abstract: This invention features our discovery on usages of Methylenetetrahydrofolate Reductase (MTHFR) gene polymorphisms in predicting homocysteine (Hcy) level and/or incidence and prognosis of diseases associated with increased Hcy level in a subject, as well as predicting treatment effects of medicines in the category of Angiotension Converting Enzyme Inhibihor (ACEI) with and without combination with B Vitamins. This invention also features our discovery on laboratory and analytical methods that are essential to the above described usages of MTHFR gene polymorphisms. In addition, this invention features a kit that has translated the above discoveries into a practical and reliable tool that can be applied to accomplish the above described usages of MTHFR gene polymorphisms. This invention represents an important step in realizing personalized medicine, with the goal to tailor diagnosis, prevention and treatment strategy to meet individual needs.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 14, 2007
    Inventors: Xiping Xu, Zhian Fang, Shanqun Jiang, Binyan Wang, Jianhua Yang, Shanchun Zhang, Guangyun Mao, Houxun Xing, Ping Liu, Yan Wang, Tonghua Zang, Mengde Wang, Yu Wang, Chengxiang Dai, Kerong Zhang