Patents by Inventor Changjiang Yang

Changjiang Yang 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: 20170308469
    Abstract: A resource processing method and device for a multi-controller system are provided. The method includes that: when a controller in the multi-controller system may not sense existence of a peer controller, the controller judges whether the peer controller loads a first resource pool according to a first use tag stored in the first resource pool previously loaded by the peer controller.
    Type: Application
    Filed: February 11, 2015
    Publication date: October 26, 2017
    Inventors: Huang LIU, Qi XU, Changjiang YANG
  • Patent number: 9369092
    Abstract: The present application discloses a feed-forward amplifier device and the method thereof. The device comprises: a splitter for splitting an input signal into two portions; a non-linear amplifier for amplifying the input signal and producing inter-modulation products; a carrier canceling unit for generating pure inter-modulation products; a linear amplifier for amplifying the pure inter-modulation products; and a coupler for generating final output signal by counteracting the inter-modulation products with the amplified pure inter-modulation products; wherein the splitter and the carrier canceling unit are provided in digital base band. According to the present disclosure, pure inter-modulation products can be generated and adjusted more flexibly and more accurately in digital base band, and hence ideal output signal may be generated.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: June 14, 2016
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Xiang Zeng, Changjiang Yang, Tao Huang
  • Patent number: 9148096
    Abstract: A method for controlling an input signal of a power amplifier is provided. The method comprise applying CFR to the input signal to obtain a processed input signal; determining a minimum CFR threshold; comparing the peak power of the power amplifier and an allowable peak power; and if the peak power is below the allowable peak power, determining a final CFR threshold by increasing the minimum CFR threshold, or if the peak power is not below the allowable peak power, reducing the average output power until peak power reaches the allowable peak power.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: September 29, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Tao Huang, Changjiang Yang, Xiang Zeng
  • Publication number: 20150035603
    Abstract: The present application discloses a feed-forward amplifier device and the method thereof. The device comprises: a splitter for splitting an input signal into two portions; a non-linear amplifier for amplifying the input signal and producing inter-modulation products; a carrier canceling unit for generating pure inter-modulation products; a linear amplifier for amplifying the pure inter-modulation products; and a coupler for generating final output signal by counteracting the inter-modulation products with the amplified pure inter-modulation products; wherein the splitter and the carrier canceling unit are provided in digital base band. According to the present disclosure, pure inter-modulation products can be generated and adjusted more flexibly and more accurately in digital base band, and hence ideal output signal may be generated.
    Type: Application
    Filed: February 24, 2012
    Publication date: February 5, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Xiang Zeng, Changjiang Yang, Tao Huang
  • Publication number: 20150022269
    Abstract: A method for controlling an input signal of a power amplifier is provided. The method comprise applying CFR to the input signal to obtain a processed input signal; determining a minimum CFR threshold; comparing the peak power of the power amplifier and an allowable peak power; and if the peak power is below the allowable peak power, determining a final CFR threshold by increasing the minimum CFR threshold, or if the peak power is not below the allowable peak power, reducing the average output power until peak power reaches the allowable peak power.
    Type: Application
    Filed: February 22, 2012
    Publication date: January 22, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Tao Huang, Changjiang Yang, Xiang Zeng
  • Patent number: 8867364
    Abstract: The present disclosure discloses a method for multi-homing path selection of a stream control transmission protocol (SCTP). The method includes the following steps of: starting quality evaluation of paths; calculating a quality evaluation value of each path; comparing the quality evaluation value of each path; and selecting a path with the highest quality evaluation value to transmit a data message. The present disclosure also discloses an apparatus for multi-homing path selection of an SCTP. By adopting the method and the apparatus, a network selects the path with the highest quality evaluation value to transmit a data message. As long as path faults affect the transmission efficiency, other path with better quality is selected for transmission, thus the capability of the network of dealing with all kinds of path faults can be improved, and the data transmission speed and quality are further improved.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: October 21, 2014
    Assignee: ZTE Corporation
    Inventors: Xincheng Yan, Xiaowei Ji, Changjiang Yang, Jingyuan Chen, Ying Tan, Jun Du, Aimin Wang, Jianye Liu
  • Patent number: 8538082
    Abstract: The present invention provides a system and method for detecting and tracking a moving object. First, robust change detection is applied to find initial candidate regions in consecutive frames. These initial detections in consecutive frames are stacked to produce space-time bands which are extracted by Hough transform and entropy minimization based band detection algorithm.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 17, 2013
    Assignee: SRI International
    Inventors: Tao Zhao, Manoj Aggarwal, Changjiang Yang
  • Publication number: 20120294177
    Abstract: The present disclosure discloses a method for multi-homing path selection of a stream control transmission protocol (SCTP). The method includes the following steps of: starting quality evaluation of paths; calculating a quality evaluation value of each path; comparing the quality evaluation value of each path; and selecting a path with the highest quality evaluation value to transmit a data message. The present disclosure also discloses an apparatus for multi-homing path selection of an SCTP. By adopting the method and the apparatus, a network selects the path with the highest quality evaluation value to transmit a data message. As long as path faults affect the transmission efficiency, other path with better quality is selected for transmission, thus the capability of the network of dealing with all kinds of path faults can be improved, and the data transmission speed and quality are further improved.
    Type: Application
    Filed: October 15, 2010
    Publication date: November 22, 2012
    Applicant: ZTE CORPORATION
    Inventors: Xincheng Yan, Xiaowei Ji, Changjiang Yang, Jingyuan Chen, Ying Tan, Jun Du, Aimin Wang, Jianye Liu
  • Publication number: 20120207353
    Abstract: The present invention provides a system and method for detecting and tracking a moving object. First, robust change detection is applied to find initial candidate regions in consecutive frames. These initial detections in consecutive frames are stacked to produce space-time bands which are extracted by Hough transform and entropy minimization based band detection algorithm.
    Type: Application
    Filed: April 19, 2012
    Publication date: August 16, 2012
    Applicant: SRI INTERNATIONAL
    Inventors: TAO ZHAO, MANOJ AGGARWAL, CHANGJIANG YANG
  • Patent number: 8170278
    Abstract: The present invention provides a system and method for detecting and tracking a moving object. First, robust change detection is applied to find initial candidate regions in consecutive frames. These initial detections in consecutive frames are stacked to produce space-time bands which are extracted by Hough transform and entropy minimization based band detection algorithm.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: May 1, 2012
    Assignee: SRI International
    Inventors: Tao Zhao, Manoj Aggarwal, Changjiang Yang
  • Publication number: 20120093398
    Abstract: A method and system for creating a histogram of oriented occurrences (HO2) is disclosed. A plurality of entities in at least one image are detected and tracked. One of the plurality of entities is designated as a reference entity. A local 2-dimensional ground plane coordinate system centered on and oriented with respect to the reference entity is defined. The 2-dimensional ground plane is partitioned into a plurality of non-overlapping bins, the bins forming a histogram, a bin tracking a number of occurrences of an entity class. An occurrence of at least one other entity of the plurality of entities located in the at least one image may be associated with one of the plurality of non-overlapping bins. A number of occurrences of entities of at least one entity class in at least one bin may be into a vector to define an HO2 feature.
    Type: Application
    Filed: December 23, 2011
    Publication date: April 19, 2012
    Applicant: SRI INTERNATIONAL
    Inventors: Hui Cheng, Changjiang Yang, Harpreet Singh Sawhney, Feng Han
  • Publication number: 20100034423
    Abstract: The present invention provides a system and method for detecting and tracking a moving object. First, robust change detection is applied to find initial candidate regions in consecutive frames. These initial detections in consecutive frames are stacked to produce space-time bands which are extracted by Hough transform and entropy minimization based band detection algorithm.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 11, 2010
    Inventors: Tao Zhao, Manoj Aggarwal, Changjiang Yang