Patents by Inventor Yonghua Liu

Yonghua Liu 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: 20090288161
    Abstract: The present invention discloses a method for establishing a trusted running environment in a computer. A trusted file authentication module and a trusted process memory code authentication module are preset in operation system (OS) of the computer and a secured OS is loaded and run. The trusted file authentication module intercepts all file operation behaviors, checks whether current file to be operated is a trusted file or not, and processes the file according to its operation type if it is trusted, otherwise processes the file after its eligibility is verified; the trusted process memory code authentication module authenticates on timing whether the running state and the integrality for all process code are normal or not; if any process is abnormal, giving an alarm, saving field data run by the process and closing down the process; otherwise continuing to run normally.
    Type: Application
    Filed: July 11, 2005
    Publication date: November 19, 2009
    Applicant: LENOVO (BEIJING) LIMITED # 6 CHUANGYE ROAD
    Inventors: Wei Wei, Chaoran Peng, Ping Yin, Yonghua Liu
  • Publication number: 20090085517
    Abstract: The present invention provides a charge management method for a battery in a mobile terminal having the steps of: setting an initial charge start point; setting a statistic analysis interval for gathering the remaining capacity of the battery at time of start and creating a statistic array for recording the remaining capacity of the battery upon each power-on operation in the statistic analysis interval; reading current remaining capacity of the battery and storing it sequentially in the statistic array; calculating a new charge start point based on a predetermined adaptive algorithm; and updating the initial charge start point with the new charge start point. The present invention also provides a charge management apparatus for a battery in a mobile terminal. With the present invention, it is possible to set an optimal charge start point through measurements, and thus lengthen the battery's lifetime.
    Type: Application
    Filed: June 27, 2008
    Publication date: April 2, 2009
    Applicant: Lenovo (Beijing) Limited
    Inventor: Yonghua Liu
  • Patent number: D495846
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: September 7, 2004
    Inventor: Yonghua Liu