Patents by Inventor Keke Ding

Keke Ding 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: 11789864
    Abstract: A method of operating a Solid-State Drive (SSD) includes determining optimized thresholds of each corresponding segments according to their frequency of use, and executing a flush operation to write the one of the corresponding segments into a memory device according to the optimized thresholds of the corresponding segments.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: October 17, 2023
    Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
    Inventors: Lei Zhang, Keke Ding, Li Wei Wang
  • Publication number: 20220283937
    Abstract: A method of operating a Solid-State Drive (SSD) includes determining optimized thresholds of each corresponding segments according to their frequency of use, and executing a flush operation to write the one of the corresponding segments into a memory device according to the optimized thresholds of the corresponding segments
    Type: Application
    Filed: May 26, 2022
    Publication date: September 8, 2022
    Inventors: Lei Zhang, Keke Ding, Li Wei Wang
  • Patent number: 11388444
    Abstract: A loop filtering method based on an adaptive self-guided filtering is mainly an adaptive self-guided filtering technology considering local structure information of an image, wherein a regularization coefficient is adjusted by calculating a weight coefficient of the regularization coefficient to realize the adaptive self-guide filtering, and then a region-level subspace mapping iterative optimization implemented on each region enables a mapping result of the each region to be optimal, wherein the mapping result of a whole image is closer to an original image. Beneficial effects of the loop filtering method are as follows: a filtering effect of a loop filtering is improved, a distortion effect of a reconstruction image is reduced and a reconstruction quality of a video frame is improved, wherein the reconstruction image is more favorable for a subsequent reference and a subjective and objective quality of the video is further improved.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: July 12, 2022
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Ce Zhu, Lingling Deng, Ni Jiang, Qiuyue Wang, Keke Ding
  • Patent number: 11379361
    Abstract: A flush method of a solid-state drive (SSD) comprises mapping a group of data to multiple segments of a mapping table; generating a recording table for recording a total value and multiple count values corresponding to the multiple segments; when one of the data is written, increasing one of the multiple count values corresponding to one of the multiple segments of the one of the data by a number, and increasing the total value by another number; determining whether the one of the multiple count values is greater than one of multiple optimized thresholds corresponding to the one of the multiple count values; and executing a flush operation to write the one of the multiple segments into a memory and restoring the mapping table if the one of the multiple count values is greater than the one of the multiple optimized thresholds.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: July 5, 2022
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Lei Zhang, Keke Ding, Li Wei Wang
  • Patent number: 11330270
    Abstract: A temporal domain rate distortion optimization considering a coding-mode adaptive distortion propagation is provided. A problem of dependency rate distortion optimization based on a temporal domain distortion propagation is induced again according to a temporal domain dependency relationship under an LD structure and a distortion propagation analysis under a skip mode and an inter mode; and an aggregation distortion of a current coding unit and an affected future coding unit are estimated and a propagation factor of a coding unit in a temporal domain distortion propagation model is calculated by constructing a time propagation chain, wherein a Lagrange multiplier is adjusted through an accurate propagation factor to realize a temporal domain dependency rate distortion optimization, and an I frame is subjected to a secondary coding technology to realize the temporal domain dependency rate distortion optimization of the I frame.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: May 10, 2022
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Ce Zhu, Lingling Deng, Ni Jiang, Qiuyue Wang, Keke Ding
  • Publication number: 20220007031
    Abstract: A temporal domain rate distortion optimization considering a coding-mode adaptive distortion propagation is provided. A problem of dependency rate distortion optimization based on a temporal domain distortion propagation is induced again according to a temporal domain dependency relationship under an LD structure and a distortion propagation analysis under a skip mode and an inter mode; and an aggregation distortion of a current coding unit and an affected future coding unit are estimated and a propagation factor of a coding unit in a temporal domain distortion propagation model is calculated by constructing a time propagation chain, wherein a Lagrange multiplier is adjusted through an accurate propagation factor to realize a temporal domain dependency rate distortion optimization, and an I frame is subjected to a secondary coding technology to realize the temporal domain dependency rate distortion optimization of the I frame.
    Type: Application
    Filed: August 26, 2021
    Publication date: January 6, 2022
    Applicant: University of Electronic Science and Technology of China
    Inventors: Ce ZHU, Lingling DENG, Ni JIANG, Qiuyue WANG, Keke DING
  • Publication number: 20210392382
    Abstract: A loop filtering method based on an adaptive self-guided filtering is mainly an adaptive self-guided filtering technology considering local structure information of an image, wherein a regularization coefficient is adjusted by calculating a weight coefficient of the regularization coefficient to realize the adaptive self-guide filtering, and then a region-level subspace mapping iterative optimization implemented on each region enables a mapping result of the each region to be optimal, wherein the mapping result of a whole image is closer to an original image. Beneficial effects of the loop filtering method are as follows: a filtering effect of a loop filtering is improved, a distortion effect of a reconstruction image is reduced and a reconstruction quality of a video frame is improved, wherein the reconstruction image is more favorable for a subsequent reference and a subjective and objective quality of the video is further improved.
    Type: Application
    Filed: August 27, 2021
    Publication date: December 16, 2021
    Applicant: University of Electronic Science and Technology of China
    Inventors: Ce ZHU, Lingling DENG, Ni JIANG, Qiuyue WANG, Keke DING
  • Publication number: 20210365368
    Abstract: A flush method of a solid-state drive (SSD) comprises mapping a group of data to multiple segments of a mapping table; generating a recording table for recording a total value and multiple count values corresponding to the multiple segments; when one of the data is written, increasing one of the multiple count values corresponding to one of the multiple segments of the one of the data by a number, and increasing the total value by another number; determining whether the one of the multiple count values is greater than one of multiple optimized thresholds corresponding to the one of the multiple count values; and executing a flush operation to write the one of the multiple segments into a memory and restoring the mapping table if the one of the multiple count values is greater than the one of the multiple optimized thresholds.
    Type: Application
    Filed: July 14, 2020
    Publication date: November 25, 2021
    Inventors: Lei Zhang, Keke Ding, Li Wei Wang