Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074074 | Compressed data scrambled distribution device and playback device thereof | Koichi Takagi, Shigeyuki Sakazawa | 2011-12-06 |
| 7991183 | Electronic watermark editor for compressed video | Shigeyuki Sakazawa | 2011-08-02 |