Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6718121 | Information signal processing apparatus using a variable compression rate in accordance with contents of information signals | — | 2004-04-06 |
| 6038208 | Information recording disc recorded with signals at two different recording densities | Akira Nishizawa, Makoto Itonaga | 2000-03-14 |
| 5592451 | Test-writing controlling method for optical disk recording device | — | 1997-01-07 |
| 5276664 | Binarization apparatus for reproduced signal in reproduction apparatus of optical disc | — | 1994-01-04 |
| 5006703 | Reflective optical rotary encoder disc | Makoto Itonaga, Kanji Kayanuma, Masakatsu Kai, Nobuaki Nakamura | 1991-04-09 |
| 4486791 | Apparatus for optically reproducing signals recorded on a rotating recording medium | Yoshiyo Wada, Hisao Kinjo, Ichiro Ueno, Yoshihiko Honjo, Kazuo Tatsuguchi | 1984-12-04 |