Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7512042 | Method of controlling focus of optical disk recording and reproducing device | Hitoshi Ogura, Tsuyoshi Yamamoto, Koji Tsukagoshi, Hideki Osawa, Yasuki Mori | 2009-03-31 |
| 7304927 | Enhanced testing region access for optical disks | — | 2007-12-04 |
| 7184379 | Optical disk recording/reproducing method and apparatus in which recording properties of the disk are detected when recording speed is changed | Akira Tsukihashi, Toru Tanaka, Shinji Seki, Toshihiko Hiroshima, Yutaka Imamura | 2007-02-27 |
| 7149167 | Data recorder | Koji Hayashi, Akira Tsukihashi, Tohru Tanaka | 2006-12-12 |
| 7149165 | Controller for data recorder | Koji Hayashi, Akira Tsukihashi, Tohru Tanaka | 2006-12-12 |
| 7102974 | Optical head optical output setting method and optical disk recording apparatus | Akira Tsukihashi, Katsuki Hattori | 2006-09-05 |
| 7072263 | Optical disc recording and playback apparatus | Toshihiko Hiroshima | 2006-07-04 |
| 6992957 | Controller of data recorder | Koji Hayashi, Akira Tsukihashi, Tohru Tanaka | 2006-01-31 |
| 6925044 | Recording control method for optical disk recording and reproducing apparatus | Toru Tanaka | 2005-08-02 |
| 6489740 | Spindle motor control method of optical disk recording and reproducing apparatus | Toru Tanaka | 2002-12-03 |
| 6356520 | Disk storage device | Toshihiko Hiroshima | 2002-03-12 |