Patents by Inventor Choul Ho Choi

Choul Ho Choi 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: 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
  • 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
  • Publication number: 20120159357
    Abstract: The mobile web map service system includes a map server configured to provide map data to a terminal in response to a request from the terminal, a multimedia point of interest (mPOI) content provision server configured to provide multimedia information based on a geographic location represented by the map data in response to the request from the terminal, and a terminal configured to request and receive the map data and the multimedia information based on the geographic location represented by the map data, and output the received map data and multimedia information to a user. To overcome limitations of a conventional mobile web map service, a service can be configured using a service application programming interface (API) including hypertext markup language 5 (HTML5)-based geo-location, map-control, offline browsing, and mPOI functions.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 21, 2012
    Applicants: KT Corporation, Electronics & Telecommunications Research Institute
    Inventors: Young Jae LIM, Ji Sang Park, Sung Woong Shin, Choul Ho Choi, Yeo Jin Kim