Patents by Inventor Ju Young Du

Ju Young Du 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).

  • Indoor position determination method and system based on WLAN signal strength
    Patent number: 9055451
    Abstract: An indoor position determination method and system based on WLAN signal strength using remote monitoring and cell space environmental attenuation is provided. The indoor position determination method includes a remote monitoring step of collecting information about signal strength from a neighboring AP and generating an AP signal strength table, a position information requesting step of receiving identification information and signal strength of a detected AP from a mobile terminal, and a cell determination step of comparing a signal strength pattern of each AP received from the mobile terminal with a neighboring AP signal strength pattern of each AP with reference to the AP signal strength table and determining a cell having an AP with a most similar pattern as a cell where the mobile terminal is presently located.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: June 9, 2015
    Assignee: KT Corporation
    Inventors: Tong Sok Kim, Ju Young Du, Sung Gwan Kim, Choul-Ho Choi
  • INDOOR POSITION DETERMINATION METHOD AND SYSTEM BASED ON WLAN SIGNAL STRENGTH
    Publication number: 20130003572
    Abstract: An indoor position determination method and system based on WLAN signal strength using remote monitoring and cell space environmental attenuation is provided. The indoor position determination method includes a remote monitoring step of collecting information about signal strength from a neighboring AP and generating an AP signal strength table, a position information requesting step of receiving identification information and signal strength of a detected AP from a mobile terminal, and a cell determination step of comparing a signal strength pattern of each AP received from the mobile terminal with a neighboring AP signal strength pattern of each AP with reference to the AP signal strength table and determining a cell having an AP with a most similar pattern as a cell where the mobile terminal is presently located.
    Type: Application
    Filed: November 26, 2010
    Publication date: January 3, 2013
    Applicant: KT CORPORATION
    Inventors: Tong Sok Kim, Ju Young Du, Sung Gwan Kim, Choul-Ho Choi