Patents by Inventor Zhengwei Zhang

Zhengwei 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: 20240133465
    Abstract: A shift actuator for a transmission includes a drive assembly coupled with a selector interface. A transmission selector operates between a plurality of transmission settings. A threaded actuator is rotationally operated by the drive assembly. A carriage linearly operates along the threaded actuator to define a plurality of actuator positions that correspond to the transmission settings. An actuator arm extends between the carriage and the transmission selector to translate linear operation of the carriage to rotational operation of the transmission selector.
    Type: Application
    Filed: March 29, 2021
    Publication date: April 25, 2024
    Inventors: Jack ZHAO, Shavin ZHANG, Gary CHEN, Zhengwei YE
  • Publication number: 20240095141
    Abstract: A method and an apparatus for displaying an information flow on a terminal device, an electronic device, a computer-readable storage medium, and a computer program product are provided. An implementation is: in response to detecting an activation operation on an application for displaying the information flow, reproducing, on the terminal device, a first page displayed on the terminal device when the application is last switched to running in the background or closed; and in response to determining that a time interval between the activation operation and the application being last switched to running in the background or closed does not exceed a first threshold, displaying a second page as a continuation of a content entry displayed in the first page, where the second page includes at least one first content entry cached in the terminal device before the activation operation but not displayed in the first page.
    Type: Application
    Filed: March 21, 2022
    Publication date: March 21, 2024
    Inventors: Yifan ZHANG, Yuqi WANG, Linfei CHU, Jing NING, Kunjie SUN, Yuhang ZHENG, Naifei SONG, Shujuan ZHANG, Lin LIU, Xunzhuo JU, Zhengwei CHEN, Wei ZHANG, Hua ZHANG, Congjun ZHOU, Tingkang WU, Tengfei LV, Hanmeng LIU, Lei WANG
  • Patent number: 9331509
    Abstract: A charger system with a digital interface circuit, wherein the digital interface circuit has an N-bit control register, wherein N is a positive integer no less than 2, and wherein the N-bit register has a primary state machine, at a first portion of addresses of the control register, configured to instruct operation statuses of a system management bus host; and a secondary state machine, at a second portion of addresses of the control register, configured to instruct a data bit of transmission of a corresponding control instruction under each of the operation statuses of the system management bus host.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: May 3, 2016
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Da Chen, Zhengwei Zhang, Yue Leng
  • Patent number: 9179519
    Abstract: A phase-shift dimming circuit for LED controller having a delay signal generator configured to receive a PWM input signal, and to provide a plurality of pairs of set signal and reset signal, the set signal and the reset signal respectively having pulses; and a plurality of latches configured to respectively receive the plurality of pairs of set signal and reset signal to generate a plurality of PMW output signals, each of the PWM output signals having pulses, and wherein the rising edge of the pulses of the PWM output signals is based on the corresponding set signal pulses, and the falling edge of the pulses of the PWM output signals is based on the corresponding reset signal pulses.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: November 3, 2015
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Da Chen, Zhengwei Zhang, Kaiwei Yao
  • Patent number: 9041377
    Abstract: A step-down regulator comprising a pseudo constant on time control circuit is disclosed, comprising an on-time generator configured to receive a switching signal provided by the step-down regulator and a control signal provided by the pseudo constant on time control circuit, and generates an on-time signal; a feedback control circuit configured to receive a feedback signal representative of the output voltage of the step-down regulator and generate an output signal; and a logic control circuit coupled to the on-time generator and the feedback control circuit to receive the on-time signal and the output signal and generating the control signal, and a power stage configured to receive an input voltage and the control signal and generate the switching signal.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: May 26, 2015
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Rui Wang, Zhengwei Zhang
  • Patent number: 8924456
    Abstract: A method and a system are disclosed for processing online joint guarantee. After a server receives an application from a user, the server provides various types of joint guarantee grouping to the user for selection. The server creates a joint guarantee group having a unique ID according to the selection of the user, organizes the information of the joint guarantee group into a data packet and sends the data packet to a bank system to be approved. The method potentially improves the success rate of joint guarantee grouping and removes the geographical limitations. Through the Internet, the method makes it possible to join companies of different geographical locations for online joint guarantee. The method also establishes a complete online alert mechanism, and realizes computerized loan risk control to improve the business credit system.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: December 30, 2014
    Assignee: Alibaba Group Holding Limited
    Inventors: Xiaoming Hu, Jing Gao, Feng Li, Jinbo Xia, Yanmin Xu, Weiyan Lv, Lijiang Zhang, Zhengwei Zhang
  • Patent number: 8896363
    Abstract: The present invention discloses an analog switching circuit having a first terminal receiving an input signal, a second terminal providing an output signal and a control terminal receiving a switching control signal. The analog switching circuit has a first logic circuit providing a first control signal and a second control signal based on the switching control signal; an NMOS and a PMOS coupled between the first terminal and the second terminal, and controlled by the first control signal and the second control signal respectively; a first control circuit controls the backgate voltage of the NMOS based on the input signal and the switching control signal; and a second control circuit controls the backgate voltage of the PMOS based on the input signal and the switching control signal.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: November 25, 2014
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Da Chen, Zhengwei Zhang, Wei Mao
  • Patent number: 8872440
    Abstract: The embodiments of the present circuit and method disclose a circuit to bypass a target circuit when an open status is detected. The present circuit may comprise a sample circuit, a monitoring circuit and a bypass circuit. The sample circuit may comprise a capacitor coupled to the target circuit. The monitoring circuit may be coupled to the capacitor and may have an output configured to generate an output signal selectively indicating the open status. The bypass circuit may comprise a switch, wherein the switch has a control terminal coupled to the output of the monitoring circuit and wherein the switch may be configured to be selectively turned ON to bypass the target circuit in accordance with the output of the monitoring circuit.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: October 28, 2014
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Frank Xi, Zhengwei Zhang
  • Publication number: 20140117924
    Abstract: A charger system with a digital interface circuit, wherein the digital interface circuit has an N-bit control register, wherein N is a positive integer no less than 2, and wherein the N-bit register has a primary state machine, at a first portion of addresses of the control register, configured to instruct operation statuses of a system management bus host; and a secondary state machine, at a second portion of addresses of the control register, configured to instruct a data bit of transmission of a corresponding control instruction under each of the operation statuses of the system management bus host.
    Type: Application
    Filed: October 25, 2013
    Publication date: May 1, 2014
    Applicant: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Da Chen, Zhengwei Zhang, Yue Leng
  • Patent number: 8605915
    Abstract: The present technology is directed to class G audio amplifiers and the associated methods of operation. In one embodiment, a class G audio amplifier includes an input port, an audio output stage, a level detector, and a charge pump. The class G audio amplifier regulates the power supplies of the audio output stage according to the input signal, so as to realize high efficiency and high quality audio output.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 10, 2013
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Haishi Wang, Zhengwei Zhang, Rui Wang, Jinyan Lin
  • Publication number: 20130300493
    Abstract: The present invention discloses an analog switching circuit having a first terminal receiving an input signal, a second terminal providing an output signal and a control terminal receiving a switching control signal. The analog switching circuit has a first logic circuit providing a first control signal and a second control signal based on the switching control signal; an NMOS and a PMOS coupled between the first terminal and the second terminal, and controlled by the first control signal and the second control signal respectively; a first control circuit controls the backgate voltage of the NMOS based on the input signal and the switching control signal; and a second control circuit controls the backgate voltage of the PMOS based on the input signal and the switching control signal.
    Type: Application
    Filed: May 7, 2013
    Publication date: November 14, 2013
    Applicant: MONOLITHIC POWER SYSTEMS, INC.
    Inventors: Da Chen, Zhengwei Zhang, Wei Mao
  • Publication number: 20130169173
    Abstract: A phase-shift dimming circuit for LED controller having a delay signal generator configured to receive a PWM input signal, and to provide a plurality of pairs of set signal and reset signal, the set signal and the reset signal respectively having pulses; and a plurality of latches configured to respectively receive the plurality of pairs of set signal and reset signal to generate a plurality of PMW output signals, each of the PWM output signals having pulses, and wherein the rising edge of the pulses of the PWM output signals is based on the corresponding set signal pulses, and the falling edge of the pulses of the PWM output signals is based on the corresponding reset signal pulses.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 4, 2013
    Applicant: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Da Chen, Zhengwei Zhang, Kaiwei Yao
  • Publication number: 20130002221
    Abstract: A step-down regulator comprising a pseudo constant on time control circuit is disclosed, comprising an on-time generator configured to receive a switching signal provided by the step-down regulator and a control signal provided by the pseudo constant on time control circuit, and generates an on-time signal; a feedback control circuit configured to receive a feedback signal representative of the output voltage of the step-down regulator and generate an output signal; and a logic control circuit coupled to the on-time generator and the feedback control circuit to receive the on-time signal and the output signal and generating the control signal, and a power stage configured to receive an input voltage and the control signal and generate the switching signal.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 3, 2013
    Applicant: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Rui Wang, Zhengwei Zhang
  • Publication number: 20120062122
    Abstract: The embodiments of the present circuit and method disclose a circuit to bypass a target circuit when an open status is detected. The present circuit may comprise a sample circuit, a monitoring circuit and a bypass circuit. The sample circuit may comprise a capacitor coupled to the target circuit. The monitoring circuit may be coupled to the capacitor and may have an output configured to generate an output signal selectively indicating the open status. The bypass circuit may comprise a switch, wherein the switch has a control terminal coupled to the output of the monitoring circuit and wherein the switch may be configured to be selectively turned ON to bypass the target circuit in accordance with the output of the monitoring circuit.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 15, 2012
    Inventors: Frank Xi, Zhengwei Zhang
  • Publication number: 20120030091
    Abstract: A method and a system of credit risk control use different incentive mechanisms for different type of users for post-loan credit risk control. The method classifies the user to one of several different user types based on the user information and a correspondence relationship between the user information and risk levels, and selects an appropriate incentive mechanism for risk control based on the user type. The incentive mechanisms may either be a positive incentive mechanism or a negative incentive mechanism depending on the user type. The incentive mechanisms are performed over a network, and are designed to encourage a user of good loan payment record but to discourage a user of bad loan payment record. The method and the system are particularly suited for risk control of repayment of various kinds of loans which are applied and disbursed over the Internet.
    Type: Application
    Filed: August 19, 2009
    Publication date: February 2, 2012
    Applicant: ALIBABA GROUP HOLDING LIMITED
    Inventors: Xiaoming Hu, Jing Gao, Feng Li, Weiyan Lv, Xiuyun Zhang, Zhengwei Zhang
  • Patent number: 8035352
    Abstract: A battery charger integrated circuit with temperature control is disclosed that includes a temperature sensor circuit and a charging current generator circuit. Upon receiving a temperature reading voltage (VDT), the temperature sensing circuit is operable to generate a second reference voltage (VREF) that is a function of the first reference voltage (VREF1). The charging current generator circuit generates and continuously adjusts a reference current (I1) and a charging current (IOUT) according to the second reference voltage (VREF). Whenever the temperature reading voltage (VDT) exceeds the first reference voltage, the temperature sensor circuit is operable to adjust the second reference voltage (VREF).
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: October 11, 2011
    Assignee: Monolithic Power Systems, Inc.
    Inventor: Zhengwei Zhang
  • Publication number: 20110166987
    Abstract: A method and a loan access evaluation system use a loan applicant's actual business transaction information received from an online business system on which the loan applicant conducts business. In addition to the information of the loan applicant's owner, other general background business information and historical business information of the loan applicant, the method and the system obtain detailed transaction data of the loan applicant on e-commerce systems or platforms and banks, and thus have access to dynamic business data of the applicant for a more reliable loan access appraisal.
    Type: Application
    Filed: September 28, 2009
    Publication date: July 7, 2011
    Applicant: Alibaba Group Holding Limited
    Inventors: Xiaoming Hu, Feng Li, Xin Yu Peng, Jing Gao, Wei Yan Lu, Zhengwei Zhang, Jinyin Zhang, Jian Shi, Guo dong Fan
  • Publication number: 20110123048
    Abstract: The present technology is directed to class G audio amplifiers and the associated methods of operation. In one embodiment, a class G audio amplifier includes an input port, an audio output stage, a level detector, and a charge pump. The class G audio amplifier regulates the power supplies of the audio output stage according to the input signal, so as to realize high efficiency and high quality audio output.
    Type: Application
    Filed: October 20, 2010
    Publication date: May 26, 2011
    Inventors: Haishi Wang, Zhengwei Zhang, Rui Wang, Jinyan Lin
  • Publication number: 20100308773
    Abstract: A battery charger integrated circuit with temperature control is disclosed that includes a temperature sensor circuit and a charging current generator circuit. Upon receiving a temperature reading voltage (VDT), the temperature sensing circuit is operable to generate a second reference voltage (VREF) that is a function of the first reference voltage (VREF1). The charging current generator circuit generates and continuously adjusts a reference current (I1) and a charging current (IOUT) according to the second reference voltage (VREF). Whenever the temperature reading voltage (VDT) exceeds the first reference voltage, the temperature sensor circuit is operable to adjust the second reference voltage (VREF).
    Type: Application
    Filed: August 17, 2010
    Publication date: December 9, 2010
    Inventor: Zhengwei Zhang
  • Patent number: 7777454
    Abstract: A battery charger integrated circuit with temperature control is disclosed that includes a temperature sensor circuit and a charging current generator circuit. Upon receiving a temperature reading voltage (VDT), the temperature sensing circuit is operable to generate a second reference voltage (VREF) that is a function of the first reference voltage (VREF1). The charging current generator circuit generates and continuously adjusts a reference current (I1) and a charging current (IOUT) according to the second reference voltage (VREF). Whenever the temperature reading voltage (VDT) exceeds the first reference voltage, the temperature sensor circuit is operable to adjust the second reference voltage (VREF).
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: August 17, 2010
    Assignee: Monolithic Power Systems, Inc.
    Inventor: Zhengwei Zhang