Issued Patents All Time
Showing 25 most recent of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9571213 | Tag generation method in broadcast encryption system | Maeng-hee Sung, Dae-youb Kim, Hwan-joon Kim | 2017-02-14 |
| 9064214 | Context aware apparatus and method | Su Myeon Kim, Won Keun Kong | 2015-06-23 |
| 9053128 | Assertion management method and apparatus, and reasoning apparatus including the assertion management apparatus | — | 2015-06-09 |
| 8966511 | Computer system and method for preventing dynamic-link library injection attack | Eun-Ah Kim, Hwan-joon Kim | 2015-02-24 |
| 8897445 | Combination-based broadcast encryption method | Dae-youb Kim, Hwan-joon Kim, Sung-joon Park | 2014-11-25 |
| RE45213 | Method of managing user key for broadcast encryption | Dae-youb Kim, Hwan-joon Kim, Sung-joon Park, Jung Hee Cheon, Myung Hwan Kim +2 more | 2014-10-28 |
| RE45191 | Method of managing user key for broadcast encryption | Dae-youb Kim, Hwan-joon Kim, Sung-joon Park, Jung Hee Cheon, Myung Hwan Kim +2 more | 2014-10-14 |
| 8755520 | Apparatus and method for generating a key for broadcast encryption | Hwan-joon Kim, Dae-youb Kim, Sung-joon Park | 2014-06-17 |
| 8625784 | Broadcast encryption method and broadcast decryption method thereof | Maeng-hee Sung, Heejean Kim, Baeeun Jung, Tae-Chul Jung, Jong-Hwan Park +4 more | 2014-01-07 |
| 8615806 | Apparatus and method for detecting a code injection attack | Hwan-joon Kim, Eun-Ah Kim, Gyungho Lee | 2013-12-24 |
| 8605898 | Apparatus and method that generates originality verification and verifies originality verification | — | 2013-12-10 |
| 8595496 | Method and system for updating time information of a DRM device | Hee-jean Kim, Maeng-hee Sung, Bae-eun Jung, Tae-Chul Jung | 2013-11-26 |
| 8578154 | Tag generation method in broadcast encryption system | Maeng-hee Sung, Dae-youb Kim, Hwan-joon Kim | 2013-11-05 |
| 8566958 | Method for authorizing contents play rights in use of a recording medium | Hwan-joon Kim, Dae-youb Kim, Maeng-hee Sung | 2013-10-22 |
| 8515074 | User key allocation method for broadcast encryption | Bae-eun Jung, Maeng-hee Sung, Hee-jean Kim | 2013-08-20 |
| 8516557 | User terminal with security function and security-control method | — | 2013-08-20 |
| 8509433 | Method and apparatus of generating encryption key for broadcast encryption | Bae-eun Jung, Maeng-hee Sung, Hee-jean Kim | 2013-08-13 |
| 8429414 | Apparatus and method of generating and detecting prevention and control data for verifying validity of data | Dae-youb Kim, Sung-ioon Park, Hwan Kim | 2013-04-23 |
| 8200963 | Combination-based broadcast encryption method | Dae-youb Kim, Hwan-joon Kim, Sung-joon Park | 2012-06-12 |
| 8160246 | Apparatus and method for generating a key for broadcast encryption | Hwan-joon Kim, Dae-youb Kim, Sung-joon Park | 2012-04-17 |
| 8054975 | Method and system for managing key of home device in broadcast encryption (BE) system | Dae-youb Kim, Hwan-joon Kim, Maeng-hee Sung | 2011-11-08 |
| 8055896 | Tag generation method in broadcast encryption system | Maeng-hee Sung, Dae-youb Kim, Hwan-joon Kim | 2011-11-08 |
| 8005225 | Hierarchical threshold tree-based broadcast encryption method | Dae-youb Kim, Hwan-joon Kim, Sung-joon Park, Dong Hoon Lee | 2011-08-23 |
| 7942335 | Radio frequency system and password management method in radio frequency system | Dae-youb Kim, Maeng-hee Sung, Hwan-joon Kim | 2011-05-17 |
| 7929705 | Method of managing user key for broadcast encryption | Dae-youb Kim, Hwan-joon Kim, Sung-joon Park, Jung Hee Cheon, Myung Hwan Kim +2 more | 2011-04-19 |