Patents by Inventor Dongcan Zhang

Dongcan Zhang 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).

  • Method and system for storing query plans in a cache and method for querying a database system
    Patent number: 11954105
    Abstract: Methods and computer systems for storing a query plan in a cache are provided. The method can include: determining a use frequency of the query plan; determining a target storage layer for storing the query plan based on the determined use frequency, wherein the cache includes at least two storage layers and each of the storage layers is associated with a compression level of query plans; processing the query plan according to the compression level of the target storage layer; and storing the processed query plan in the target storage layer.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: April 9, 2024
    Assignee: Alibaba Group Holding Limited
    Inventors: Fang Zheng, Zhe Chen, Ruiping Li, Congnan Luo, Yu Dong, Jie Zhang, Li Zhang, Ji Jiannan, Dongcan Cui, Chaoqun Zhan
  • Television color cast adjustment method and apparatus
    Patent number: 10616659
    Abstract: Disclosed is a television color cast adjustment method, including: dividing a television display screen into a plurality of areas according to a predetermined manner; determining an adjustment coefficient of red light and an adjustment coefficient of blue light in each area according to a position of each area relative to a light bar for the television display screen; adjusting initial image in each area according to the adjustment coefficients of red light and blue light thereof, and displaying the adjusted image in each area on the television display screen. Disclosed is also a television color cast adjustment apparatus. The present disclosure may solve the problem that the color cast appears on television display screens which is caused by the glass light guide plate, thus the viewing effect of TVs is improved.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: April 7, 2020
    Assignee: SHENZHEN TCL NEW TECHNOLOGY CO., LTD.
    Inventors: Shubiao Liu, Jianyuan Lin, Honglei Ji, Dongcan Zhang, Erchao Yang, Jianshun Huang, Chonghui Luo
  • TELEVISION COLOR CAST ADJUSTMENT METHOD AND APPARATUS
    Publication number: 20190261058
    Abstract: Disclosed is a television color cast adjustment method, including: dividing a television display screen into a plurality of areas according to a predetermined manner; determining an adjustment coefficient of red light and an adjustment coefficient of blue light in each area according to a position of each area relative to a light bar for the television display screen; adjusting initial image in each area according to the adjustment coefficients of red light and blue light thereof, and displaying the adjusted image in each area on the television display screen. Disclosed is also a television color cast adjustment apparatus. The present disclosure may solve the problem that the color cast appears on television display screens which is caused by the glass light guide plate, thus the viewing effect of TVs is improved.
    Type: Application
    Filed: December 27, 2016
    Publication date: August 22, 2019
    Inventors: Shubiao LIU, Jianyuan LIN, Honglei JI, Dongcan ZHANG, Erchao YANG, Jianshun HUANG, Chonghui LUO