Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9516514 | Method for measuring position using a positioning access point, and device, system, and access point for same | Chae Hwan Cho, Chang Seok Lee, Hye Min Lee, Seung Yoon Baek | 2016-12-06 |
| 9432853 | Positioning device of mobile communication terminal, method for constructing wireless LAN information of device, positioning server of mobile communication terminal, and method for driving server | Chae Hwan Cho, Chang Seok Lee, Hye Min Lee, Seung Yoon Baek | 2016-08-30 |
| 9408176 | Location and state information providing/inquiring system using WLAN/WPAN communication, log information providing/inquiring system and method, service server and customer terminal, location and state providing/inquiring method | Seung Yoon Baek, Chae Hwan Cho, Hye Min Lee, Chang Seok Lee, Jong Tae Ihm | 2016-08-02 |
| 9215604 | Method and device for updating a database for wireless LAN based positioning | Seung Yoon Baek, Hye Min Lee, Chang Seok Lee, Chae Hwan Cho | 2015-12-15 |
| 9185677 | Method device and system for estimating access points using log data | Chae Hwan Cho, Song Man Lee, Ji Min Kim, Chun Young Kim | 2015-11-10 |
| 9173057 | Apparatus and method of managing peripheral wireless LAN radio signal for positioning service | Chae Hwan Cho, Song Man Lee, Ji Min Kim, Chun Young Kim | 2015-10-27 |
| 9100782 | Location and state information providing/inquiring system using WLAN/WPAN communication, log information providing/inquiring system and method, service server and customer terminal, location and state providing/inquiring method | Seung Yoon Baek, Chae Hwan Cho, Hye Min Lee, Chang Seok Lee, Jong Tae Ihm | 2015-08-04 |
| 9060284 | Method and device for estimating AP position using a map of a wireless LAN radio environment | Chae Hwan Cho, Chang Seok Lee, Seung Yoon Baek, Hye Min Lee | 2015-06-16 |
| 8874137 | Method and device for discriminating positioning error using wireless LAN signal | Chae Hwan Cho, Seung Yoon Baek, Hye Min Lee, Chang Seok Lee | 2014-10-28 |
| 8666433 | Location positioning method and device using wireless LAN signals | Chae Hwan Cho, Chang Seok Lee, Jin Hyo Park, Jong Tae Ihm | 2014-03-04 |