Patents by Inventor Cong ZHENG

Cong ZHENG 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).

  • Context-based analysis of applications
    Patent number: 10565377
    Abstract: Evaluating samples is disclosed. A sample is received. A determination is made that the sample includes at least one sensitive code segment. A set of paths that include execution of the code segment is determined based at least in part using static analysis. A verdict for the sample is determined based at least in part on the set of paths.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: February 18, 2020
    Assignee: Palo Alto Networks, Inc.
    Inventors: Cong Zheng, Zhi Xu
  • Frequency hopping for reducing switching power converter noise
    Patent number: 10560025
    Abstract: A switching power converter is configured to control switching noise by implementing a plurality of pulse width modulation modes of operation. The peak current in each pulse width modulation mode of operation is controlled so that an output power for the switching power converter is continuous with regard to transitions between the pulse width modulation modes.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: February 11, 2020
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: John Shi, John Kesterson, Cong Zheng, Kai-Wen Chin
  • HYBRID SECONDARY-SIDE REGULATION
    Publication number: 20200036291
    Abstract: A flyback converter control architecture is provided in which primary-only feedback techniques are used to ensure smooth startup and detection of fault conditions. During steady-state operation, secondary-side regulation is employed. In addition, current limits are monitored during steady-state operation using primary-only feedback techniques to obviate the need for a secondary-side current sense resistor.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 30, 2020
    Inventors: Yong LI, Cong ZHENG, Xiaoyan WANG, Wenduo LIU
  • Switching power converter for direct battery charging
    Patent number: 10541550
    Abstract: A direct charging method is provided that alerts a mobile device when a switching power converter is operating in a constant-current mode to alert the mobile device of an output current without the use of a secondary-side current sense resistor.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: January 21, 2020
    Assignee: Dialog Semiconductor Inc.
    Inventors: Fuqiang Shi, Jianming Yao, Yong Li, Kai-wen Chin, Cong Zheng
  • Adaptive control for zero-voltage switching in a multi-switch switching power converter
    Patent number: 10530260
    Abstract: A switching power converter is provided that adaptively changes the on-time period for an auxiliary switch transistor to locate a boundary between sufficient and insufficient energy.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: January 7, 2020
    Assignee: Dialog Semiconductor Inc.
    Inventors: Wenduo Liu, Cong Zheng, Xiaoyan Wang, Pengju Kong
  • DYNAMIC ANALYSIS TECHNIQUES FOR APPLICATIONS
    Publication number: 20200004963
    Abstract: A sample is analyzed to determine a set of events that should be selected for performing by a dynamic analyzer executing the sample in an instrumented, emulated environment. The set of selected events is performed. A maliciousness verdict is determined for the sample based at least in part on one or more responses taken by the sample in response to the set of selected events being performed by the dynamic analyzer.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 2, 2020
    Inventors: Cong Zheng, Wenjun Hu, Zhi Xu
  • BOOT STRAP CAPACITOR CHARGING FOR SWITCHING POWER CONVERTERS
    Publication number: 20200007041
    Abstract: A charging path is provided for the charging of an bootstrap capacitor that stores a driver power supply voltage for driving an active clamp switch transistor in a flyback converter. The charging path couples charge from an active clamp capacitor to charge the bootstrap capacitor.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 2, 2020
    Inventors: Wenduo Liu, Cong Zheng
  • Hybrid secondary-side regulation
    Patent number: 10461646
    Abstract: A flyback converter control architecture is provided in which primary-only feedback techniques are used to ensure smooth startup and detection of fault conditions. During steady-state operation, secondary-side regulation is employed. In addition, current limits are monitored during steady-state operation using primary-only feedback techniques to obviate the need for a secondary-side current sense resistor.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: October 29, 2019
    Assignee: Dialog Semiconductor Inc.
    Inventors: Yong Li, Cong Zheng, Xiaoyan Wang, Wenduo Liu
  • DEVICE AND METHOD IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20190289523
    Abstract: A system that determines a cell density and cell type in an area corresponding to a location of a user equipment; determines a mobility state of the user equipment based on the determined cell density and the determined cell type; and controls cell reselection for the user equipment based on the determined mobility state of the user equipment.
    Type: Application
    Filed: April 30, 2019
    Publication date: September 19, 2019
    Applicant: Sony Corporation
    Inventors: Xiaodong XU, Cuibo YU, Yateng HONG, Ya LIU, Cong ZHENG, Liyao WEI, Xiaojia SONG, Zhongbin QIN
  • IDENTIFYING SECURITY RISKS AND ENFORCING POLICIES ON ENCRYPTED/ENCODED NETWORK COMMUNICATIONS
    Publication number: 20190268305
    Abstract: Network traffic associated with a communication between a client device and a resource is monitored. At least of the monitored traffic is encrypted. The encrypted traffic is categorized. One example way to categorize the encrypted traffic includes using Domain Name System (DNS) query information. A policy is applied to the communication based at least in part on the categorization of the encrypted traffic.
    Type: Application
    Filed: February 28, 2018
    Publication date: August 29, 2019
    Inventors: Zhi Xu, Yangjie Cheng, Cong Zheng
  • Smart grouping control method for power converter switching noise management
    Patent number: 10389253
    Abstract: A switching power converter is provided that cycles a power switch during a group pulse mode of operation to produce a train of pulses within a group period responsive to a control voltage being within a group mode control voltage range. Depending upon the control voltage, the number of pulses in each train of pulses is varied to provide a linear power delivery to the load.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: August 20, 2019
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Fuqiang Shi, Kai-Wen Chin, Cong Zheng, Jianming Yao, Yong Li
  • MITIGATING COMMUNICATION AND CONTROL ATTEMPTS
    Publication number: 20190245870
    Abstract: The profiling and fingerprinting of communication and control (C&C) infrastructure is disclosed herein. An initial C&C profile is transmitted to a first network monitoring system. The initial C&C profile includes a domain corresponding to a C&C channel, and a pattern corresponding to the C&C channel. At least in part in response to information received from a second network monitoring system, the initial C&C profile is revised. An updated C&C profile is transmitted to the first network monitoring system.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 8, 2019
    Inventors: Zhi Xu, Cong Zheng
  • ADAPTIVE CONTROL FOR ZERO-VOLTAGE SWITCHING IN A MULTI-SWITCH SWITCHING POWER CONVERTER
    Publication number: 20190229624
    Abstract: A switching power converter is provided that adaptively changes the on-time period for an auxiliary switch transistor to locate a boundary between sufficient and insufficient energy.
    Type: Application
    Filed: January 19, 2018
    Publication date: July 25, 2019
    Inventors: Wenduo Liu, Cong Zheng, Xiaoyan Wang, Pengju Kong
  • Mitigating communication and control attempts
    Patent number: 10320810
    Abstract: The profiling and fingerprinting of communication and control (C&C) infrastructure is disclosed herein. An initial C&C profile is transmitted to a first network monitoring system. The initial C&C profile includes at least one of: (1) a domain corresponding to a C&C channel, and (2) a C&C pattern corresponding to a C&C channel. At least in part in response to information received from a second network monitoring system, the initial C&C profile is revised. An updated C&C profile is transmitted to the first network monitoring system.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: June 11, 2019
    Assignee: Palo Alto Networks, Inc.
    Inventors: Zhi Xu, Cong Zheng
  • Device and method in wireless communication system
    Patent number: 10321378
    Abstract: A system that determines a cell density and cell type in an area corresponding to a location of a user equipment; determines a mobility state of the user equipment based on the determined cell density and the determined cell type; and controls cell reselection for the user equipment based on the determined mobility state of the user equipment.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: June 11, 2019
    Assignee: SONY CORPORATION
    Inventors: Xiaodong Xu, Cuibo Yu, Yateng Hong, Ya Liu, Cong Zheng, Liyao Wei, Xiaojia Song, Zhongbin Qin
  • HYBRID SECONDARY-SIDE REGULATION
    Publication number: 20180351462
    Abstract: A flyback converter control architecture is provided in which primary-only feedback techniques are used to ensure smooth startup and detection of fault conditions. During steady-state operation, secondary-side regulation is employed. In addition, current limits are monitored during steady-state operation using primary-only feedback techniques to obviate the need for a secondary-side current sense resistor.
    Type: Application
    Filed: August 10, 2018
    Publication date: December 6, 2018
    Inventors: Yong Li, Cong Zheng, Xiaoyan Wang, Wenduo Liu
  • Switching power converter with history-based valley mode switching
    Patent number: 10108294
    Abstract: History-based valley mode switching techniques and systems are provided to reduce the frequency spreading of switching noise in a switching power converter.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: October 23, 2018
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Fuqiang Shi, Cong Zheng, Danna Suo
  • SMART GROUPING CONTROL METHOD FOR POWER CONVERTER SWITCHING NOISE MANAGEMENT
    Publication number: 20180301991
    Abstract: A switching power converter is provided that cycles a power switch during a group pulse mode of operation to produce a train of pulses within a group period responsive to a control voltage being within a group mode control voltage range. Depending upon the control voltage, the number of pulses in each train of pulses is varied to provide a linear power delivery to the load.
    Type: Application
    Filed: June 19, 2018
    Publication date: October 18, 2018
    Inventors: Fuqiang Shi, Kai-Wen Chin, Cong Zheng, Jianming Yao, Yong Li
  • Adaptive valley mode switching
    Patent number: 10084382
    Abstract: An adaptive valley mode switching power converter is provided that switches on a power switch within valley periods of a resonant voltage oscillation for the power switch. Each valley period is determined with regard to a valley threshold voltage.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 25, 2018
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Pengju Kong, Hien Bui, Duc Doan, Cong Zheng
  • FREQUENCY HOPPING FOR REDUCING SWITCHING POWER CONVERTER NOISE
    Publication number: 20180205318
    Abstract: A switching power converter is configured to control switching noise by implementing a plurality of pulse width modulation modes of operation. The peak current in each pulse width modulation mode of operation is controlled so that an output power for the switching power converter is continuous with regard to transitions between the pulse width modulation modes.
    Type: Application
    Filed: March 13, 2018
    Publication date: July 19, 2018
    Inventors: John Shi, John Kesterson, Cong Zheng, Kai-Wen Chin