Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6018608 | Method of generating information used for the copy protecting signal and apparatus using the same | Hisao Morita, Masaaki Fujita, Kenji Ishikawa | 2000-01-25 |
| 5388168 | Picture quality improving circuit using a cumulative histogram | Naoji Okumura | 1995-02-07 |
| 5270815 | Image compression processing apparatus having means for removing jitter contained at boundary between image and mask portions | Naoji Okumura | 1993-12-14 |
| 5231477 | Comb filter | Naoji Okumura | 1993-07-27 |
| 5192996 | Video chroma signal processing circuit | Tetsuo Kutsuki, Naoji Okumura | 1993-03-09 |
| 5138455 | Video signal processing circuit for compressed picture insertion function of television receiver | Naoji Okumura | 1992-08-11 |