Patents by Inventor Xiaozhong Chen

Xiaozhong Chen 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: 10856009
    Abstract: A method of video coding using coding modes including IntraBC mode (Intra-block copy mode) for a picture is disclosed. The system determines whether the current reference block is located above a current coding unit (CU) containing the current prediction unit (PU) in a vertical direction and whether the current reference block is located on a left side of the current CU in a horizontal direction based on the original block vector (BV). If both results are not true, the original BV is clipped to a clipped BV so that a relocated reference block corresponding to the clipped BV is above the current CU in the vertical direction or to the left side of the current CU in the horizontal direction. The clipped BV is used as a predictor for encoding or decoding of a current BV or used for IntraBC encoding or decoding of the current PU.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: December 1, 2020
    Assignee: MEDIATEK INC.
    Inventors: Tzu-Der Chuang, Xiaozhong Xu, Yu-Chen Sun, Shih-Ta Hsiang, Shan Liu
  • Publication number: 20200357515
    Abstract: A method and apparatus include receiving, by a device, medical information associated with a user. Inquiry information is determined based on the medical information associated with the user and a reinforcement learning model. The inquiry information is provided to permit response information to be received. The response information is received based on providing the inquiry information. Diagnosis information is determined based on the medical information and the response information using a machine learning model. The diagnosis information is provided to a set of devices via a network.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 12, 2020
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiaozhong CHEN, Kun Wang, Nan Du, Min Tu, Shangqing Zhang, Yusheng Xie, Wei Fan
  • Publication number: 20200304783
    Abstract: A method of palette management for palette coding in a video coding system receives input data associated with a current block in a high-level picture structure and initializes a palette predictor in the high-level picture structure before a corresponding palette of a first palette-coded block in the high-level picture structure is coded. If a palette mode is selected for the current block, the method applies the palette coding to the current block using a current palette and updates the palette predictor based on the current palette to generate an updated palette predictor for a next block coded in the palette mode.
    Type: Application
    Filed: June 11, 2020
    Publication date: September 24, 2020
    Applicant: HFI Innovation Inc.
    Inventors: Wang-Lin LAI, Yu-Chen SUN, Shan LIU, Xiaozhong XU, Tzu-Der CHUANG, Ding-Yun CHEN, Yu-Wen HUANG
  • Publication number: 20200288145
    Abstract: Methods and apparatus for a coding system using palette mode coding for colour video are disclosed. According to method, when the palette mode is enabled, separate coding of luma and chroma components is disabled or if separate coding of luma and chroma components, the palette mode is disabled. According to another method, when the palette mode is enabled for the current image, palette mode coding is only applied to the luma blocks and non-palette mode coding is applied to the chroma blocks. According to yet another method, palette mode coding is applied to the luma blocks using luma palettes if the palette mode is selected for the luma blocks and palette mode coding applying to the chroma blocks using chroma palettes if the palette mode is selected for the chroma blocks. According to yet another method, the scan direction for a non-square CU depends on the shape of the non-square.
    Type: Application
    Filed: May 26, 2017
    Publication date: September 10, 2020
    Inventors: Tzu-Der CHUANG, Yu-Chen SUN, Shan LIU, Ching-Yeh CHEN, Yu-Wen HUANG, Xiaozhong XU, Wang-Lin LAI, Jing YE
  • Patent number: 10715801
    Abstract: A method of palette management for palette coding in a video coding system receives input data associated with a current block in a high-level picture structure and initializes a palette predictor in the high-level picture structure before a corresponding palette of a first palette-coded block in the high-level picture structure is coded. If a palette mode is selected for the current block, the method applies the palette coding to the current block using a current palette and updates the palette predictor based on the current palette to generate an updated palette predictor for a next block coded in the palette mode.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: July 14, 2020
    Assignee: HFI Innovation Inc.
    Inventors: Wang-Lin Lai, Yu-Chen Sun, Shan Liu, Xiaozhong Xu, Tzu-Der Chuang, Ding-Yun Chen, Yu-Wen Huang
  • Publication number: 20200213597
    Abstract: A method of controlling intra prediction for decoding or encoding of a video sequence, is by at least one processor and includes obtaining an index of an intra prediction mode of a current block of the video sequence, obtaining a coefficient scanning direction based on the obtained index, using a first look up table indicating a mapping between a plurality of indices of a plurality of intra prediction modes and respective coefficient scanning directions, and performing a coefficient scanning of the current block, based on the obtained coefficient scanning direction.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 2, 2020
    Applicant: TENCENT AMERICA LLC
    Inventors: Yiming LI, Xiaozhong XU, Zhenzhong CHEN, Shan LIU
  • Publication number: 20200177914
    Abstract: A method of controlling intra prediction for decoding or encoding of a video sequence, is performed by at least one processor and includes identifying whether a first intra prediction mode of an above neighboring block of a prediction block is different than a second intra prediction mode of a left neighboring block of the prediction block. The method further includes, based on the first intra prediction mode being identified to be not different than the second intra prediction mode, obtaining a most probable mode (MPM) list including the first intra prediction mode, first immediate modes immediate to the first intra prediction mode and one among second immediate modes respectively immediate to the first immediate modes, and performing the intra prediction on multiple reference lines of the prediction block, using the obtained MPM list, the multiple reference lines being without a first reference line closest to the prediction block.
    Type: Application
    Filed: November 20, 2019
    Publication date: June 4, 2020
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiaozhong XU, Shan Liu, Yingbin Wang, Zhenzhong Chen
  • Publication number: 20200169729
    Abstract: A method of controlling intra prediction for decoding or encoding of a video sequence, is performed by at least one processor and includes obtaining intra prediction modes including directional modes respectively corresponding to angular prediction directions, a first amount of one or more of the directional modes being excluded from the intra prediction modes based on a second amount of the intra prediction modes and a third amount of most probable modes (MPMs). The method further includes selecting, as the MPMs, two or more of the intra prediction modes from which the one or more of the directional modes are excluded, and selecting, for decoding the video sequence, one of the intra prediction modes from which the one or more of the directional modes are excluded.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 28, 2020
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiaozhong XU, Shan LIU, Yiming LI, Zhenzhong CHEN
  • Publication number: 20200021802
    Abstract: A method for palette coding is disclosed. In an encoder side, the method determines whether a first block is coded using a palette coding mode or a non-palette coding. If the first block is coded using the non-palette coding mode, a first color table for the first block is derived based on one or more color tables associated with one or more previously processed blocks. If the first block is coded using the palette coding mode, the first color table is derived from the first block. A second block coded after the first block may use the first color table as a palette prediction. At the decoder side, if the current block is coded using the palette coding mode, a first color table based on a previous coded block is derived and the current block is decoded using a first color table as a palette predictor.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Applicant: HFI INNOVATION INC.
    Inventors: Tzu-Der CHUANG, Wang-Lin Lai, Yu-Chen Sun, Shan Liu, Xiaozhong Xu
  • Publication number: 20190359117
    Abstract: A regulating assembly (1) for a light source and a lighting and/or signaling device, an adjusting device (1200), a lighting device and a motor vehicle, a bezel device (3000), and a gas guiding device and a lighting and/or signaling device containing the same are provided. The regulating assembly (1) and the adjusting device (1200) are used to adjust the lighting and/or signaling module in the lighting device provided in the housing of the lighting device. The bezel device (3000) and the gas guiding device may be used for the lighting and/or signaling device. The regulating assembly (1) comprises a supporting frame (10) coupled in a displaceable manner to the light source, a fixed regulating portion (11) which is rotatable, and horizontal and vertical regulating portions (12,13) in a form of a ball-headed screw-thread part (121).
    Type: Application
    Filed: December 13, 2017
    Publication date: November 28, 2019
    Applicant: FOSHAN ICHIKOH VALEO AUTO LIGHTING SYSTEMS CO., LTD.
    Inventors: Daihua LI, Sishui HU, Zhenchao CHEN, Xiaozhong GUO, Jinjin PEI, Min DENG
  • Patent number: 10477203
    Abstract: A method for palette coding is disclosed. In an encoder side, the method determines whether a first block is coded using a palette coding mode or a non-palette coding. If the first block is coded using the non-palette coding mode, a first color table for the first block is derived based on one or more color tables associated with one or more previously processed blocks. If the first block is coded using the palette coding mode, the first color table is derived from the first block. A second block coded after the first block may use the first color table as a palette prediction. At the decoder side, if the current block is coded using the palette coding mode, a first color table based on a previous coded block is derived and the current block is decoded using a first color table as a palette predictor.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: November 12, 2019
    Assignee: HFI Innovation Inc.
    Inventors: Tzu-Der Chuang, Wang-Lin Lai, Yu-Chen Sun, Shan Liu, Xiaozhong Xu
  • Patent number: 10448049
    Abstract: A method for color index coding of blocks in a picture is disclosed. In one embodiment for the decoder side, a current coding mode is parsed from the input coded bitstream for one or more first currently decoded pixels in a current block starting from a first starting position. If the current coding mode corresponds to a generalized copy-previous-row mode, one or more first reference pixels starting from a first starting reference position located at T-th row above the first currently decoded pixels are identified, where T is an integer equal to or greater than one. The first reference pixels starting from the first starting reference position are then used to decode the first currently decoded pixels starting from a first starting position by copying the first reference pixels starting from the first starting reference position respectively. The system may also include a copy-left mode or escape mode.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: October 15, 2019
    Assignee: MEDIATEK INC.
    Inventors: Jing Ye, Shan Liu, Jungsun Kim, Wang-Lin Lai, Tzu-Der Chuang, Yu-Chen Sun, Xiaozhong Xu
  • Publication number: 20190246125
    Abstract: A method and apparatus perform palette coding of a block of video data by initializing the palette or triplet palette or using a selected palette or triplet palette from a preceding image area for the beginning block of the current image area. The method receives input data associated with a current image area consisting of multiple blocks. For the beginning block, coding palette predictor is determined based on an initial palette or triplet palette or based on a selected palette or triplet palette associated with a selected block located at a location before the end of a preceding image area. For blocks of the current image area, palette coding is applied to the blocks, where at least one block uses the palette predictor for the beginning block as the palette predictor.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 8, 2019
    Inventors: Tzu-Der CHUANG, Wang-Lin LAI, Yu-Chen SUN, Shan LIU, Xiaozhong XU, Yu-Wen HUANG, Ding-Yun CHEN
  • Patent number: 10321141
    Abstract: A method and apparatus for palette coding of a block of video data by initializing the palette or triplet palette or using a selected palette or triplet palette from a preceding image area for the beginning block of the current image area are disclosed. The method receives input data associated with a current image area consisting of multiple blocks. For the beginning block, the palette predictor is determined based on an initial palette or triplet palette or based on a selected palette or triplet palette associated with a selected block located at a location before the end of a preceding image area. For blocks of the current image area, palette coding is applied to the blocks, where at least one block uses the palette predictor for the beginning block as the palette predictor.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: June 11, 2019
    Assignee: HFI INNOVATION INC.
    Inventors: Tzu-Der Chuang, Wang-Lin Lai, Yu-Chen Sun, Shan Liu, Xiaozhong Xu, Yu-Wen Huang, Ding-Yun Chen
  • Patent number: 9662027
    Abstract: The present invention is directed to a method for determining onset of ventricular arrhythmias using bounded-input bounded-output stability of QT interval (QTI) dynamics. The method of the present invention includes two parts. A first part of the method determines the dependence of each QTI on several prior QTIs and RR intervals (RRI). This determination is represented as an autoregressive model with exogenous input (ARX). A second part of the method determines the BIBO stability of the ARX model in the z-domain. The metrics associated with the first and second parts of the method are then used to predict onset of arrhythmia.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: May 30, 2017
    Assignee: The Johns Hopkins University
    Inventors: Natalia Trayanova, Xiaozhong Chen
  • Patent number: 9215987
    Abstract: A method of predicting ventricular arrhythmias includes receiving an electrical signal from a subject's heart for a plurality of heart beats, identifying characteristic intervals and heart beat durations of the electrical signal corresponding to each of the plurality of heart beats to provide a plurality of characteristic intervals with corresponding heart beat durations, representing dynamics of the plurality of characteristic intervals as a function of a plurality of preceding characteristic intervals and durations of corresponding heart beats over a chosen period time, assessing a stability of the function over the chosen period of time, and predicting ventricular arrhythmias based on detected instabilities in the dynamics of the characteristic intervals.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: December 22, 2015
    Assignee: The Johns Hopkins University
    Inventors: Natalia A. Trayanova, Xiaozhong Chen
  • Publication number: 20150141861
    Abstract: The present invention is directed to a method for determining onset of ventricular arrhythmias using bounded-input bounded-output stability of QT interval (QTI) dynamics. The method of the present invention includes two parts. A first part of the method determines the dependence of each QTI on several prior QTIs and RR intervals (RRI). This determination is represented as an autoregressive model with exogenous input (ARX). A second part of the method determines the BIBO stability of the ARX model in the z-domain. The metrics associated with the first and second parts of the method are then used to predict onset of arrhythmia.
    Type: Application
    Filed: June 5, 2013
    Publication date: May 21, 2015
    Inventors: Natalia Trayanova, Xiaozhong Chen
  • Publication number: 20130102912
    Abstract: A method of predicting ventricular arrhythmias includes receiving an electrical signal from a subject's heart for a plurality of heart beats, identifying characteristic intervals and heart beat durations of the electrical signal corresponding to each of the plurality of heart beats to provide a plurality of characteristic intervals with corresponding heart beat durations, representing dynamics of the plurality of characteristic intervals as a function of a plurality of preceding characteristic intervals and durations of corresponding heart beats over a chosen period time, assessing a stability of the function over the chosen period of time, and predicting ventricular arrhythmias based on detected instabilities in the dynamics of the characteristic intervals.
    Type: Application
    Filed: December 16, 2010
    Publication date: April 25, 2013
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Natalia A. Trayanova, Xiaozhong Chen
  • Patent number: 7047067
    Abstract: Methods, systems, and computer program products can be provided for evaluating a risk of the occurrence of cardiac arrhythmias in a heart. The system can include at least one sensing electrode and a controller. The sensing electrode can be configured to sense electrical signals from a heart over a range of heart rates. The controller can be configured to determine values of a at least one restitution property of the heart from the sensed electrical signals and to evaluate the risk of the occurrence of cardiac arrhythmias from the determine values of the at least one restitution property.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: May 16, 2006
    Assignee: UAB Research Foundation
    Inventors: Richard A. Gray, Xiaozhong Chen, Isabelle Banville
  • Publication number: 20040015088
    Abstract: Methods, systems, and computer program products can be provided for evaluating a risk of the occurrence of cardiac arrhythmias in a heart. The system can include at least one sensing electrode and a controller. The sensing electrode can be configured to sense electrical signals from a heart over a range of heart rates. The controller can be configured to determine values of a at least one restitution property of the heart from the sensed electrical signals and to evaluate the risk of the occurrence of cardiac arrhythmias from the determine values of the at least one restitution property.
    Type: Application
    Filed: May 31, 2002
    Publication date: January 22, 2004
    Inventors: Richard A. Gray, Xiaozhong Chen, Isabelle Banville