Issued Patents All Time
Showing 25 most recent of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9571213 | Tag generation method in broadcast encryption system | Weon-il Jin, Maeng-hee Sung, Hwan-joon Kim | 2017-02-14 |
| 9344429 | Network apparatus based on content name and method for protecting content | Eun-Ah Kim, Byoung Joon Lee, Mi Suk Huh | 2016-05-17 |
| 9143527 | Apparatus and method preventing overflow of pending interest table in name based network system | — | 2015-09-22 |
| 9100654 | Method and apparatus for inserting video watermark in compression domain | Hwan-joon Kim, Mi Suk Huh, Chee Sun Won, Sung Min Kim | 2015-08-04 |
| 9021266 | Validation system and verification method including signature device and verification device to verify contents | — | 2015-04-28 |
| 8918635 | Apparatus and method for access control of content in distributed environment network | — | 2014-12-23 |
| 8897445 | Combination-based broadcast encryption method | Weon-il Jin, Hwan-joon Kim, Sung-joon Park | 2014-11-25 |
| 8874919 | Apparatus and method of a portable terminal authenticating another portable terminal | — | 2014-10-28 |
| RE45213 | Method of managing user key for broadcast encryption | Weon-il Jin, 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 | Weon-il Jin, Hwan-joon Kim, Sung-joon Park, Jung Hee Cheon, Myung Hwan Kim +2 more | 2014-10-14 |
| 8826381 | Node device and method to prevent overflow of pending interest table in name based network system | — | 2014-09-02 |
| 8755520 | Apparatus and method for generating a key for broadcast encryption | Hwan-joon Kim, Weon-il Jin, Sung-joon Park | 2014-06-17 |
| 8578154 | Tag generation method in broadcast encryption system | Weon-il Jin, Maeng-hee Sung, Hwan-joon Kim | 2013-11-05 |
| 8566958 | Method for authorizing contents play rights in use of a recording medium | Hwan-joon Kim, Maeng-hee Sung, Weon-il Jin | 2013-10-22 |
| 8509443 | Rekey index generation method and rekey index generation apparatus | Mi Suk Huh, Hwan-joon Kim | 2013-08-13 |
| 8464070 | Apparatus and method for transmitting and receiving data | — | 2013-06-11 |
| 8429414 | Apparatus and method of generating and detecting prevention and control data for verifying validity of data | Weon-il Jin, Sung-ioon Park, Hwan Kim | 2013-04-23 |
| 8401182 | Method of and device for updating group key | Mi Suk Huh, Tae-Chul Jung, Hwan-joon Kim | 2013-03-19 |
| 8374353 | Method and apparatus for updating a group key | Mi Suk Huh, Tae-Chul Jung, Hwan-joon Kim | 2013-02-12 |
| 8270614 | Method of updating group key and group key update device using the same | Mi Suk Huh, Tae-Chul Jung, Hwan-joon Kim | 2012-09-18 |
| 8200963 | Combination-based broadcast encryption method | Weon-il Jin, Hwan-joon Kim, Sung-joon Park | 2012-06-12 |
| 8160246 | Apparatus and method for generating a key for broadcast encryption | Hwan-joon Kim, Weon-il Jin, Sung-joon Park | 2012-04-17 |
| 8121974 | Method of generating node indentifier in tree structure | Mi Suk Huh, Tae-Chul Jung, Hwan-joon Kim | 2012-02-21 |
| 8107669 | Video watermarking apparatus in compression domain and method using the same | Hwan-joon Kim, Mi Suk Huh, Chee Sun Won, Sung Min Kim | 2012-01-31 |
| 8094871 | Method and apparatus for inserting video watermark in compression domain | Hwan-joon Kim, Mi Suk Huh, Chee Sun Won, Sung Min Kim | 2012-01-10 |