Patents by Inventor Xiao Wu

Xiao Wu 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).

  • System and method for a switched-mode power supply
    Patent number: 9231472
    Abstract: In accordance with an embodiment, a method of operating a switched-mode power supply includes receiving power from an input node via a first transistor, providing a first portion of the received power to a load via a switching transistor having a first terminal coupled to the first transistor and a second terminal coupled to the load via a series resistor and a series inductor, measuring a current through the load, measuring comprising monitoring a voltage across the series resistor; and controlling an average current through the load by switching on and switching off the switching transistor according to the measured current.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: January 5, 2016
    Assignee: Infineon Technologies Austria AG
    Inventor: Xiao Wu Gong
  • Profile-Based Bandwidth Scheduler
    Publication number: 20150372750
    Abstract: A profile-based scheduler is disclosed. In other embodiments, the profile-based scheduler may profile previously accessed websites and/or FTP sites. In doing so, the profile may compile bandwidth requirements for all such profiled websites and/or FTP sites within a lookup table. When a website and/or FTP site is accessed, the profiler may grant the bandwidth associated with the website or FTP site within the lookup table. In some embodiments, the profiler may create entries not only based on websites and/or FTP sites but may also profile users, TCP connections, web browser configurations and/or web browser types.
    Type: Application
    Filed: January 20, 2015
    Publication date: December 24, 2015
    Applicant: VIASAT, INC.
    Inventors: Xiao Wu, Bill Hallstrom
  • CODE RATE SMOOTHING METHOD FOR TRANSMITTING REAL-TIME VIDEO IN A WIRELESS NETWORK
    Publication number: 20150358686
    Abstract: The present disclosure provides a code rate smoothing method for transmitting real-time video in a wireless network. The method may include the following. Make a statistics on transmission delay of a video frame periodically. When the transmission delay becomes smaller, size of playing buffer may be adjusted to be smaller by fast forwarding. When the transmission delay becomes larger, size of playing buffer may be adjusted to be larger by slow playing. Rates of fast forwarding and slow playing may be determined by variation of transmission delay, depth of playing buffer and timestamp information.
    Type: Application
    Filed: June 28, 2013
    Publication date: December 10, 2015
    Applicant: Beijing Xinwei Telecom Technology Iinc.
    Inventors: Yan XU, Zhengchun XU, Xiao WU, Xiaohua LI
  • System and Method for a Switched-Mode Power Supply
    Publication number: 20150295494
    Abstract: In accordance with an embodiment, a method of operating a switched-mode power supply includes receiving power from an input node via a first transistor, providing a first portion of the received power to a load via a switching transistor having a first terminal coupled to the first transistor and a second terminal coupled to the load via a series resistor and a series inductor, measuring a current through the load, measuring comprising monitoring a voltage across the series resistor; and controlling an average current through the load by switching on and switching off the switching transistor according to the measured current.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 15, 2015
    Applicant: Infineon Technologies Austria AG
    Inventor: Xiao Wu Gong
  • System and Method for a Switched-Mode Power Supply
    Publication number: 20150280584
    Abstract: In accordance with an embodiment, a method of operating a switched-mode power supply includes detecting a voltage decrease in a secondary winding of a transformer by detecting a first voltage transient using a sensor capacitively coupled to the secondary winding of the transformer. A secondary switch coupled to the secondary winding of the transformer is turned on based on when the first voltage transient is detected.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 1, 2015
    Applicant: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Xiao Wu Gong, Yong Siang Teo
  • System and Method for a Switched-Mode Power Supply
    Publication number: 20150280574
    Abstract: In accordance with an embodiment, a method of operating a switched-mode power supply includes turning on a semiconductor switch coupled to a primary winding of a transformer for a first time period of a first cycle, turning off the semiconductor switch for a second time period of the first cycle, detecting a change in slew rate of a voltage at an output node of the semiconductor switch, determining a switch turn-on time based on detecting the change in the slew rate, and turning on the semiconductor switch at the determined switch turn-on time for a first time period of a second cycle.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 1, 2015
    Applicant: Infineon Technologies Austria AG
    Inventors: Xiao Wu Gong, Yong Siang Teo
  • System and Method for a Switched-Mode Power Supply
    Publication number: 20150280573
    Abstract: In accordance with an embodiment, a method of operating a switched-mode power supply includes synchronously rectifying a current in a secondary side of the switched-mode power supply by detecting a voltage drop of a secondary winding of a transformer and activating a semiconductor switch coupled to the secondary winding when the voltage drop is detected.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 1, 2015
    Applicant: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Xiao Wu Gong, Kok Kee Lim
  • UNIVERSAL INPUT AND WIDE OUTPUT FUNCTION FOR LIGHT EMITTING DIODE (LED) DRIVER
    Publication number: 20150230303
    Abstract: Techniques are described for controlling an amount of current flowing through one or more light-emitting-diodes (LEDs), without sensing input and/or output voltage, so that the amount of current flowing through the one or more LEDs is approximately equal to a target current level. The techniques provide for coarse and fine tuning of the amount of time a transistor, through which the current flows, is turned on to control the amount of current flowing through the one or more LEDs.
    Type: Application
    Filed: February 13, 2014
    Publication date: August 13, 2015
    Applicant: Infineon Technologies Austria AG
    Inventors: Xiao Wu Gong, Kok Kee Lim
  • Aluminoxane catalyst activators containing carbocation agents, and use thereof in polyolefin catalysts
    Patent number: 9090720
    Abstract: This invention relates to an activator composition comprising (i) an organoaluminum compounds; (ii) a carbocation compound of the formula R1(X)n; wherein R1 is a hydrocarbyl; n is from 1 to the number of possible substitutions of the hydrocarbyl group and each X is a labile leaving group; and (iii) an aluminoxane. The activator composition may also contain a carrier support. This invention also provides a catalyst composition comprising the activator composition described above and a transition metal component. This invention also provides methods of polymerizing monomer comprising carrying out such polymerization in the presence of one or more catalyst composition according to this invention.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: July 28, 2015
    Assignee: ALBEMARLE CORPORATION
    Inventors: Lubin Luo, Xiao Wu, Steven P. Diefenbach
  • MULTI-LAYER SEARCH-ENGINE INDEX
    Publication number: 20150161265
    Abstract: Subject matter described herein includes a multi-layer search-engine index. Accordingly, the search-engine index is divided into multiple indexes, each of which includes a respective set of information used to serve (i.e., respond to) a query. One index includes a term index, which organizes a set of terms that are found among a collection of documents. Another index includes a document index, which organizes a set of documents that are searchable. A computing device is used to serve the search-engine index (i.e., to analyze the index when identifying documents relevant to a search query). For example, a solid-state device might be used to serve the multi-layer search-engine index.
    Type: Application
    Filed: February 16, 2015
    Publication date: June 11, 2015
    Inventors: HUI SHEN, MAO YANG, LINTAO ZHANG, ZHENYU ZHAO, XIAO WU, YING YAN, XIAOSONG YANG, CHAD WALTERS, CHOONG SOON CHANG
  • Fire protection mortar
    Patent number: 9034097
    Abstract: A composition for the preparation of a fire protection mortar comprising 45 to 70% by weight of cement binder, 8 to 20% by weight calcite, 8 to 20% by weight mica, 0 to 5% by weight of xonotlite, 0.1 to 20% by weight of expanded perlite, 0.1 to 10% by weight of fibers, 0.01 to 2% by weight of air entrainer and foaming agent, 0.01 to 2% by weight of processing aids.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: May 19, 2015
    Assignee: Promat Research and Technology Centre NV
    Inventors: Xiao Wu, Ann Opsommer
  • Profile-based bandwidth scheduler
    Patent number: 8958363
    Abstract: A profile-based scheduler is disclosed. In other embodiments, the profile-based scheduler may profile previously accessed websites and/or FTP sites. In doing so, the profile may compile bandwidth requirements for all such profiled websites and/or FTP sites within a lookup table. When a website and/or FTP site is accessed, the profiler may grant the bandwidth associated with the website or FTP site within the lookup table. In some embodiments, the profiler may create entries not only based on websites and/or FTP sites but may also profile users, TCP connections, web browser configurations and/or web browser types.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: February 17, 2015
    Assignee: ViaSat, Inc.
    Inventors: Xiao Wu, Bill Hallstrom
  • Multi-layer search-engine index
    Patent number: 8959077
    Abstract: Subject matter described herein includes a multi-layer search-engine index. Accordingly, the search-engine index is divided into multiple indexes, each of which includes a respective set of information used to serve (i.e., respond to) a query. One index includes a term index, which organizes a set of terms that are found among a collection of documents. Another index includes a document index, which organizes a set of documents that are searchable. A computing device is used to serve the search-engine index (i.e., to analyze the index when identifying documents relevant to a search query). For example, a solid-state device might be used to serve the multi-layer search-engine index.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: February 17, 2015
    Assignee: Microsoft Corporation
    Inventors: Hui Shen, Mao Yang, Lintao Zhang, Zhenyu Zhao, Xiao Wu, Ying Yan, Xiaosong Yang, Chad Walters, Choong Soon Chang
  • Electric Motor
    Publication number: 20140368076
    Abstract: An electric motor includes a stator having multiple magnetic poles and a rotor rotatably mounted to the stator. The rotor includes a shaft, a commutator and a rotor core fixed to the shaft; and windings wound on the rotor core and electrically connected to the commutator. The rotor core is formed by stacking a plurality of laminations. Each lamination includes an inner ring having a hole for fixing the shaft; an outer ring radially spaced from the inner ring; multiple teeth extending outwardly from the outer ring, and multiple ribs connecting the inner ring to the outer ring. Each rib has a width w measured in a circumferential direction of the lamination. The number of ribs is n. The width w and the number n satisfy the formula: 0.75?n×w2?64, where the width w is measured in millimeters.
    Type: Application
    Filed: June 12, 2014
    Publication date: December 18, 2014
    Inventors: Rui Feng Qin, Di WANG, Ji Yu LIANG, Guo Dong REN, Yong Bin LI, Xiao Wu XIE, Yao ZHAO, Xian Ming WU, Sheng HAN
  • LOW-PRESSURE CHEMICAL VAPOR DEPOSITION APPARATUS AND THIN-FILM DEPOSITION METHOD THEREOF
    Publication number: 20140322900
    Abstract: A low-pressure chemical vapor deposition (LPCVD) apparatus and a thin-film deposition method thereof The apparatus comprises a reaction furnace, having reaction gas input pipelines respectively arranged at a furnace opening part and a furnace tail part. During thin film deposition, each reaction gas is synchronously introduced into the reaction furnace through the input pipeline at the furnace opening part and the input pipeline at the furnace tail part.
    Type: Application
    Filed: December 3, 2012
    Publication date: October 30, 2014
    Applicant: Wuxi China Resources Huajing Microelectronics Co., Ltd
    Inventors: Xunhui Wang, Xiao Wu, Qijun Guo, Jianchao Fan
  • FIRE PROTECTION MORTAR
    Publication number: 20140216653
    Abstract: A composition for the preparation of a fire protection mortar comprising 45 to 70% by weight of cement binder, 8 to 20% by weight calcite, 8 to 20% by weight mica, 0 to 5% by weight of xonotlite, 0.1 to 20% by weight of expanded perlite, 0.1 to 10% by weight of fibers, 0.01 to 2% by weight of air entrainer and foaming agent, 0.01 to 2% by weight of processing aids.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: Promat Research and Technology Centre NV
    Inventors: Xiao Wu, Ann Opsommer
  • Aluminoxane Catalyst Activators Containing Carbocation Agents, and use thereof in Polyolefin Catalysts
    Publication number: 20130345376
    Abstract: This invention relates to an activator composition comprising (i) an organoaluminum compounds; (ii) a carbocation compound of the formula R1 (X)n; wherein R1 is a hydrocarbyl; n is from 1 to the number of possible substitutions of the hydrocarbyl group and each X is a labile leaving group; and (iii) an aluminoxane. The activator composition may also contain a carrier support. This invention also provides a catalyst composition comprising the activator composition described above and a transition metal component. This invention also provides methods of polymerizing monomer comprising carrying out such polymerization in the presence of one or more catalyst composition according to this invention.
    Type: Application
    Filed: March 8, 2012
    Publication date: December 26, 2013
    Applicant: Albemarle Corporation
    Inventors: Lubin Luo, Xiao Wu, Steven P. Diefenbach
  • Aluminoxane catalyst activators derived from dialkylaluminum cation precursor agents, processes for making same, and use thereof in catalysts and polymerization of olefins
    Patent number: 8575284
    Abstract: Compositions useful for activating catalysts for olefin polymerization, and methods for making same, are provided. Such compositions can be derived from at least: an organoaluminum compound, a carrier, an oxygen source, and, optionally, a Lewis base.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: November 5, 2013
    Assignee: Albemarle Corporation
    Inventors: Lubin Luo, Samuel A. Sangokoya, Xiao Wu, Steven P. Diefenbach, Brian Kneale
  • Electronic apparatus and clock generating method thereof
    Patent number: 8531216
    Abstract: The present invention discloses an electronic apparatus.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: September 10, 2013
    Assignee: Ralink Technology Corp.
    Inventors: Jin-Xiao Wu, Heng-Chih Lin, Yi-Bin Hsieh
  • SYSTEM AND METHOD FOR SWITCHING MOUSE OPERATION MODE
    Publication number: 20130141334
    Abstract: A system for switching a computer mouse operation mode includes a mouse and a computer, wherein the mouse comprises a first button, a second button, a control unit, and a delivery unit. The control unit determines whether a pressing time of a button reaches a predetermined time, and sets the value of a flag to different values according the pressed button. The computer running an operation system comprises a receiving unit configured to receive the flag output from the delivery unit. The drive unit sets the mouse operation mode according the value of the flag.
    Type: Application
    Filed: August 23, 2012
    Publication date: June 6, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
    Inventor: CHUN-XIAO WU