Patents by Inventor Chen Xiong

Chen Xiong 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: 10015522
    Abstract: An apparatus including a memory operably coupled to a processor. The processor is configured to determine whether to use an intra smoothing filter for a rectangular prediction unit (PU) based on a lookup table (LUT) used for square PUs, wherein a width of the rectangular PU is not equal to a height of the rectangular PU.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: July 3, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Guichun Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Publication number: 20180146191
    Abstract: Embodiment methods generate a second set of most probable modes (MPMs) from a plurality of intra prediction modes excluding a first set of MPMs for intra prediction or reconstruction of a luma block. An embodiment method constructs a reference block of the luma block, selects a number of samples in the reference block that have been predicted or reconstructed but not in the luma block, and performs intra prediction (or reconstruction) of the selected samples using each of some or all of the plurality of intra prediction modes excluding the first set of MPMs, thereby generating predicted samples (or reconstructed samples) for the selected samples. Based on the predicted samples (or reconstructed samples) and the selected samples, the second set MPM is selected.
    Type: Application
    Filed: November 20, 2017
    Publication date: May 24, 2018
    Inventors: Minqiang Jiang, Jianhua Zheng, Promila Agarwal, Michael Schimpf, Nam Ling, Chen-Xiong Zhang
  • Patent number: 9807385
    Abstract: An apparatus comprising a processor configured to determine whether to apply an intra smoothing filter for a prediction unit (PU) based on a lookup table (LUT), wherein the LUT comprises data indicating the intra smoothing filter should not be applied for any PU with a block size of 8×8 pixels and associated with directional prediction mode. The disclosure also includes a method comprising generating reference samples, determining a size of a PU block, and selecting the reference samples based on PU block size, wherein filtered reference samples are not selected for PU blocks with a size of 8×8 pixels and associated with directional prediction mode.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: October 31, 2017
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Guichun Li, Lingzhi Liu, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang, Li Song
  • Publication number: 20170310970
    Abstract: System and method embodiments are provided for achieving improved View Synthesis Distortion (VSD) calculation and more accurate distortion estimation of encoded video frames. An embodiment method includes obtaining a depth map value for a video frame and determining a weighting factor for depth distortion in accordance with the depth map value. The weighting factor maps a pixel range of the depth map value to an output function having higher values for closer image objects and lower values for farther image objects. The VSD for the video frame is then calculated as a function of absolute horizontal texture gradients weighted by a depth distortion value and the weighting factor determined in accordance with the depth map value.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 26, 2017
    Inventors: Zhouye Gu, Nam Ling, Chen-Xiong Zhang, Jianhua Zheng
  • Publication number: 20170311374
    Abstract: Embodiments of the present invention provide a wireless communications method, apparatus, and system. A terminal is provided. The terminal sets up a connection to a first base station, and stays in always connected mode. Therefore, when the terminal moves in a dense network, handovers of the first base station can be reduced. Further, when the terminal moves in the dense network, frequent signaling interaction is reduced, paging load in the entire network is reduced, and an end-to-end delay in service setup and transmission is reduced.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 26, 2017
    Inventors: Junren Chang, Yuchun Wu, Shulan Feng, Chen-Xiong Zhang
  • Patent number: 9762914
    Abstract: There is disclosed a method, device and computer-readable storage medium for decoding video data. The method includes: obtaining a reference sample array of a video block; obtaining a sum of the reference sample array; calculating a threshold by performing arithmetic right shift to the sum, a shift value of the arithmetic right shift being determined according to size information of the video block; and determining the binary partition pattern by comparing the reference sample array with the threshold.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: September 12, 2017
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Publication number: 20170243960
    Abstract: A complementary tunneling field effect transistor and a manufacturing method are disclosed, which includes: a first drain region and a first source region that are disposed on a substrate, where they include a first dopant; a first channel that is disposed on the first drain region and a second channel that is disposed on the first source region; a second source region that is disposed on the first channel and a second drain region that is disposed on the second channel, where they include a second dopant; a first epitaxial layer that is disposed on the first drain region and the second source region, and a second epitaxial layer that is disposed on the second drain region and the first source region; and a first gate stack layer that is disposed on the first epitaxial layer, and a second gate stack layer that is disposed on the second epitaxial layer.
    Type: Application
    Filed: May 5, 2017
    Publication date: August 24, 2017
    Inventors: Xichao Yang, Jing Zhao, Chen-Xiong Zhang
  • Publication number: 20170237991
    Abstract: System and method embodiments for image coding are disclosed. In an embodiment, a method in a data processing system for image encoding includes determining a sparsity constraint according to a dimension of an input image signal. The method also includes iteratively determining a plurality of approximations to the input image signal. Each iteration provides an approximation of the input image signal. Each approximation includes a set of dictionary element indices and coefficients. The dictionary is an over-complete dictionary. Iterations of the determining step are terminated when a number of iterations is equal to the sparsity constraint. The method also includes selecting one of the plurality of approximations according to a minimum rate-distortion cost. The method also includes determining an encoded image signal according to non-zero coefficients and corresponding indices for each non-zero coefficient in the selected approximation.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 17, 2017
    Inventors: Minqiang Jiang, Jianhua Zheng, Madhusudan Kalluri, Nam Ling, Chen-Xiong Zhang
  • Publication number: 20170230005
    Abstract: A differential input amplification-stage circuit comprises a voltage unit, first and second bulk-driven transistors, first and second mirror current sources, and a differential amplifier unit. The first and the second bulk-driven transistors respectively receive first and second input voltages, and converts the first and the second input voltages into first and second output currents. The differential amplifier unit separately outputs first and second adjustment currents under an action of voltages output by the first to the third voltage output ends. The first and the second mirror current sources respectively output first and second predetermined currents according to the first output current and the first adjustment current, and the second output current and the second adjustment current, so as to maintain transconductance constancy of the differential input amplification-stage circuit. Therefore, output stability is improved.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 10, 2017
    Inventors: Yangyang Tang, Chen-Xiong Zhang
  • Patent number: 9699462
    Abstract: System and method embodiments are provided for achieving improved View Synthesis Distortion (VSD) calculation and more accurate distortion estimation of encoded video frames. An embodiment method includes obtaining a depth map value for a video frame and determining a weighting factor for depth distortion in accordance with the depth map value. The weighting factor maps a pixel range of the depth map value to an output function having higher values for closer image objects and lower values for farther image objects. The VSD for the video frame is then calculated as a function of absolute horizontal texture gradients weighted by a depth distortion value and the weighting factor determined in accordance with the depth map value.
    Type: Grant
    Filed: January 2, 2015
    Date of Patent: July 4, 2017
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Publication number: 20170155925
    Abstract: An apparatus including a memory operably coupled to a processor. The processor is configured to determine whether to use an intra smoothing filter for a rectangular prediction unit (PU) based on a lookup table (LUT) used for square PUs, wherein a width of the rectangular PU is not equal to a height of the rectangular PU.
    Type: Application
    Filed: February 14, 2017
    Publication date: June 1, 2017
    Inventors: Guichen Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Publication number: 20170155908
    Abstract: There is disclosed a method, device and computer-readable storage medium for decoding video data. The method includes: obtaining a reference sample array of a video block; obtaining a sum of the reference sample array; calculating a threshold by performing arithmetic right shift to the sum, a shift value of the arithmetic right shift being determined according to size information of the video block; and determining the binary partition pattern by comparing the reference sample array with the threshold.
    Type: Application
    Filed: February 13, 2017
    Publication date: June 1, 2017
    Applicants: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye GU, Jianhua ZHENG, Nam LING, Chen-Xiong ZHANG
  • Publication number: 20170127087
    Abstract: A method, an apparatus and a decoder for decoding a block of a depth map are provided. An ordered list of decoding modes is obtained, wherein the ordered list of decoding modes comprises a plurality of decoding modes each of which is capable of being used for decoding of the block. A plurality of depth modeling modes (DMMs) each of which is capable of being used for decoding of the block are obtained. And whether a DMM of the plurality of DMMs is to be added into the ordered list of decoding modes in accordance with a decision condition is determined.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 4, 2017
    Applicants: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye GU, Jianhua ZHENG, Nam LING, Chen-Xiong ZHANG
  • Patent number: 9641853
    Abstract: There is disclosed a method, apparatus and computer program product for prediction mode selection for coding a block of a depth map. An ordered list of coding modes is obtained, wherein the ordered list of coding modes comprises a plurality of coding modes. And whether a depth modeling mode and/or a region boundary chain mode is to be added into the ordered list of coding modes in accordance with a decision condition is determined.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: May 2, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Jianhua Zheng, Zhouye Gu, Nam Ling, Chen-Xiong Zhang
  • Patent number: 9602839
    Abstract: An apparatus comprising a processor configured to determine whether to use an intra smoothing filter for a rectangular prediction unit (PU) based on a lookup table (LUT) used for square PUs, wherein a width of the rectangular PU is not equal to a height of the rectangular PU.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: March 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Guichun Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Patent number: 9584109
    Abstract: The present invention relates to a voltage regulator and a resonant gate driver of the voltage regulator, where the resonant gate driver is configured to drive a first power transistor and a second power transistor and includes: a first control gateway, a second control gateway, and an inductor, where: a first end of the first control gateway is connected to a first end of the second control gateway; a second end of the first control gateway is connected to a second end of the second control gateway by using the inductor; and a third end of the first control gateway is connected to the first power transistor, and a third end of the second control gateway is connected to the second power transistor. The resonant gate driver according to an embodiment of the present invention can reduce a driving period and increase a response speed.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: February 28, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yangyang Tang, Chen-Xiong Zhang
  • Patent number: 9577960
    Abstract: A universal error-correction circuit with fault-tolerant nature includes an error-correction unit with fault-tolerant nature implemented by a logic gate, where digital input signals of the error-correction unit with fault-tolerant nature are separately I0, I1 . . . , I2k-1, and I2k, digital output signals of the error-correction unit with fault-tolerant nature are separately O0, O1, . . . , Ok-2, and Ok-1, and the digital input signals and the digital output signals belong to a set {0,1}, where k is a positive integer. The error-correction unit with fault-tolerant nature is configured to, when k=1, set O0=I0 if I0=I1, and O0=I2 otherwise; and when k>1, set Ok-1=I2k-1 if Ok-2=I2k-1, and Ok-1=I2k otherwise. Because a logical relationship between input and output is uniquely certain, the error-correction circuit with fault-tolerant nature may be implemented only by a logic gate.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: February 21, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yangyang Tang, Chen-Xiong Zhang
  • Patent number: 9571858
    Abstract: There is disclosed a method, device and computer-readable storage medium for decoding video data. The method includes: obtaining a reference sample array of a video block; obtaining a sum of the reference sample array; calculating a threshold by performing arithmetic right shift to the sum, a shift value of the arithmetic right shift being determined according to size information of the video block; and determining the binary partition pattern by comparing the reference sample array with the threshold.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: February 14, 2017
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Patent number: 9569661
    Abstract: A device is configured to perform a method for neck and shoulder detection. The method includes receiving an image that includes a face. The method also includes performing a neck localization operation on the image. The neck localization operation is performed using results from a pre-trained regression model. The method further includes performing a shoulder localization operation on the image. The method still further includes estimating a plurality of shoulder and neck keypoints using results of the neck localization operation and the shoulder localization operation.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: February 14, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Jingsong Xu, Ying Cui, Qiang Wu, Jian Zhang, Chen-Xiong Zhang, Haibo Liu, Kui Fang
  • Publication number: 20170018024
    Abstract: A system and method for virtual clothes fitting based on video augmented reality in a mobile wireless device is disclosed. In an embodiment, a method for virtual cloth-fitting with video augmentation in a mobile wireless device includes receiving a video stream of an upper body of a user; detecting a face in the video stream; detecting a shoulder contour; determining keypoints of the shoulder and neck portions of the video stream of the upper body of the user according to the detected face and the detected shoulder contour; mapping an image of clothes to the video stream of the upper body of the user according to the keypoints; and displaying an augmented video stream of the upper body of the user with the image of the clothes overlaid over a portion of the video stream of the upper body of the user.
    Type: Application
    Filed: July 15, 2015
    Publication date: January 19, 2017
    Inventors: Jingsong Xu, Ying Cui, Qiang Wu, Jian Zhang, Chen-Xiong Zhang, Haibo Liu, Kui Fang