Issued Patents All Time
Showing 1–25 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12278851 | Method, system, and non-transitory computer-readable record medium for sharing content during VoIP-based call | DeokYong AHN, Min Jeong Kim, Jaehyun Lee, Seongsu Kim, Kyoung Min Kim +8 more | 2025-04-15 |
| 11792238 | Method, system, and non-transitory computer-readable record medium for sharing content during VoIP-based call | DeokYong AHN, Min Jeong Kim, Jaehyun Lee, Seongsu Kim, Kyoung Min Kim +8 more | 2023-10-17 |
| 11792241 | Method, system, and non-transitory computer-readable record medium for displaying reaction during VoIP-based call | DeokYong AHN, Min Jeong Kim, Jaehyun Lee, Seongsu Kim, Kyoung Min Kim +8 more | 2023-10-17 |
| 11496428 | Method and system for sharing content on instant messaging application | DeokYong AHN, Min Jeong Kim, Jaehyun Lee, Seongsu Kim, Kyoung Min Kim +8 more | 2022-11-08 |
| 11470127 | Method, system, and non-transitory computer-readable record medium for displaying reaction during VoIP-based call | DeokYong AHN, Min Jeong Kim, Jaehyun Lee, Seongsu Kim, Kyoung Min Kim +8 more | 2022-10-11 |
| 10523812 | Method and system for providing ringback tone service and ringtone service in Voice over Internet Protocol (VoIP) call service | Deok Yong Ahn, Sanghyuk Suh, Keum Ryong Kim, Tae Jeong LEE, Jaehyun Lee +4 more | 2019-12-31 |
| 9571213 | Tag generation method in broadcast encryption system | Weon-il Jin, Maeng-hee Sung, Dae-youb Kim | 2017-02-14 |
| 9100654 | Method and apparatus for inserting video watermark in compression domain | Mi Suk Huh, Dae-youb Kim, Chee Sun Won, Sung Min Kim | 2015-08-04 |
| 8966511 | Computer system and method for preventing dynamic-link library injection attack | Eun-Ah Kim, Weon-il Jin | 2015-02-24 |
| 8897445 | Combination-based broadcast encryption method | Weon-il Jin, Dae-youb Kim, Sung-joon Park | 2014-11-25 |
| RE45213 | Method of managing user key for broadcast encryption | Weon-il Jin, Dae-youb 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, Dae-youb Kim, Sung-joon Park, Jung Hee Cheon, Myung Hwan Kim +2 more | 2014-10-14 |
| 8813106 | Method and system for electronic commerce using internet protocol television (IPTV) and mobile terminal | — | 2014-08-19 |
| 8755520 | Apparatus and method for generating a key for broadcast encryption | Dae-youb Kim, Weon-il Jin, Sung-joon Park | 2014-06-17 |
| 8615806 | Apparatus and method for detecting a code injection attack | Weon-il Jin, Eun-Ah Kim, Gyungho Lee | 2013-12-24 |
| 8578154 | Tag generation method in broadcast encryption system | Weon-il Jin, Maeng-hee Sung, Dae-youb Kim | 2013-11-05 |
| 8566958 | Method for authorizing contents play rights in use of a recording medium | Dae-youb Kim, Maeng-hee Sung, Weon-il Jin | 2013-10-22 |
| 8509443 | Rekey index generation method and rekey index generation apparatus | Mi Suk Huh, Dae-youb Kim | 2013-08-13 |
| 8401182 | Method of and device for updating group key | Dae-youb Kim, Mi Suk Huh, Tae-Chul Jung | 2013-03-19 |
| 8374353 | Method and apparatus for updating a group key | Dae-youb Kim, Mi Suk Huh, Tae-Chul Jung | 2013-02-12 |
| 8270614 | Method of updating group key and group key update device using the same | Dae-youb Kim, Mi Suk Huh, Tae-Chul Jung | 2012-09-18 |
| 8200963 | Combination-based broadcast encryption method | Weon-il Jin, Dae-youb Kim, Sung-joon Park | 2012-06-12 |
| 8159970 | Method of transmitting image data in video telephone mode of a wireless terminal | Jeong Hoon Kim, Chae-Whan Lim | 2012-04-17 |
| 8160246 | Apparatus and method for generating a key for broadcast encryption | Dae-youb Kim, Weon-il Jin, Sung-joon Park | 2012-04-17 |
| 8121974 | Method of generating node indentifier in tree structure | Mi Suk Huh, Dae-youb Kim, Tae-Chul Jung | 2012-02-21 |