Patents by Inventor Jiann-Tsuen Liu

Jiann-Tsuen 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).

  • System of non-intrusive access control and method thereof
    Patent number: 7061376
    Abstract: A non-intrusive access control method. First, identification of a tag and real-time circumstance information both related to a detection area are acquired. Next, whether the tag is permitted is determined based on circumstance identification corresponding to the detection area, the tag and the real-time circumstance information.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: June 13, 2006
    Assignee: Institute for Information Industry
    Inventors: Chung-Ren Wang, Chih-Wei Yang, Jiann-Tsuen Liu
  • Methods and systems for data authorization and mobile devices using the same
    Publication number: 20060090202
    Abstract: Methods for data authorization. A shared packet comprising data and corresponding data rules is received. A rule process is implemented according to the data rules and default data rules. An authority inference process is implemented on the data according to the rule processing result and context information. An access control list is generated and authorized operations corresponding to authorization definitions of the access control list are executed.
    Type: Application
    Filed: December 28, 2004
    Publication date: April 27, 2006
    Inventors: Jiann-Tsuen Liu, Tse-Ming Tsai, Shu-Ling Hsiao, Ren-Dar Yang
  • System of non-intrusive access control and method thereof
    Publication number: 20050116822
    Abstract: A non-intrusive access control method. First, identification of a tag and real-time circumstance information both related to a detection area are acquired. Next, whether the tag is permitted is determined based on circumstance identification corresponding to the detection area, the tag and the real-time circumstance information.
    Type: Application
    Filed: April 19, 2004
    Publication date: June 2, 2005
    Inventors: Chung-Ren Wang, Chih-Wei Yang, Jiann-Tsuen Liu