Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10102540 | Device and method for enforcing advertisement viewing | Sung-Oh Hwang | 2018-10-16 |
| 10051337 | Method and system for managing an encryption key for a broadcasting service | Sung-Oh Hwang | 2018-08-14 |
| 9898588 | Method and apparatus for providing cloud-based digital rights management service and system thereof | Byung-Rae Lee | 2018-02-20 |
| 9882903 | Method for protecting personal information in audience measurement of digital broadcasting system | Sung-Oh Hwang | 2018-01-30 |
| 9491184 | Method and apparatus for managing tokens for digital rights management | Byung-Rae Lee, Sung-Oh Hwang, Kook-Heui Lee | 2016-11-08 |
| 9197404 | Method and apparatus for providing broadcast service using encryption key in a communication system | Byung-Rae Lee, Sung-Oh Hwang, Kook-Heui Lee | 2015-11-24 |
| 9191204 | Encryption key distribution method in mobile broadcasting system and system for the same | Byung-Rae Lee, Sung-Oh Hwang | 2015-11-17 |
| 9161098 | Method and apparatus for reporting audience measurement in content transmission system | Sung-Oh Hwang | 2015-10-13 |
| 9148462 | Method and apparatus for controlling content playback in content delivery system | Byung-Rae Lee, Bo-Gyeong Kang | 2015-09-29 |
| 9038191 | Method and apparatus for providing DRM service | Byung-Rae Lee, Bo-Gyeong Kang | 2015-05-19 |
| 8532298 | Encryption key distribution method in mobile broadcasting system, and system for the same | Byung-Rae Lee, Sung-Oh Hwang | 2013-09-10 |
| 8363840 | Method and apparatus for providing broadcast service using encryption key in a communication system | Byung-Rae Lee, Sung-Oh Hwang, Kook-Heui Lee | 2013-01-29 |