| 5644554 |
Magnetic head load/unload device, method and a magneto-optical disk apparatus using the same |
Kunio Harada, Toshimitsu Kaku, Masahiro Ojima |
1997-07-01 |
| 5511050 |
Focus error detecting method and optical head using the same |
Kiyoshi Matsumoto, Takeshi Maeda, Shigeru Nakamura, Mariko Umeda |
1996-04-23 |
| 5396477 |
Light spot positioning method and optical disc memory apparatus employing the same |
Kiyoshi Matsumoto, Takeshi Maeda |
1995-03-07 |
| 5235591 |
Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium |
Shigeru Nakamura, Eiichi Seya, Seiichi Mita, Masahiro Ojima, Hiroshi Yasuoka +5 more |
1993-08-10 |
| 5161046 |
Beam position control apparatus |
Minoru Ohshima, Shuichi Morio, Susumu Saitoh, Osamu Namikawa, Kazutoshi Obara +4 more |
1992-11-03 |
| 5034941 |
Optical disk apparatus having auto-focusing servo systems for multiple light spots and method of starting the auto-focusing servo systems |
Takeshi Maeda, Kiyoshi Matsumoto |
1991-07-23 |
| 4970707 |
Optical tape apparatus with a tracking control mechanism and/or a focusing control mechanism |
Fumio Hara, Yoshito Tsunoda, Shigeru Nakamura, Yoshizumi Eto, Seiichi Mita +2 more |
1990-11-13 |
| 4866687 |
Optical disc access method and optical disk storage using coarse and fine actuators |
Takeshi Maeda, Kazuo Shigematsu, Toshimitsu Kaku, Masahiro Takasago |
1989-09-12 |
| 4745587 |
Eccentricity correction during optical head accessing of a desired track |
Takeshi Maeda, Koji Muraoka |
1988-05-17 |
| 4736353 |
Disc accessing using coarse and fine actuators with the fine actuator locked during coarse actuator movement |
Koji Muraoka |
1988-04-05 |
| 4731771 |
Tracking servo setting method and apparatus |
Takeshi Maeda, Kazuo Shigematsu, Shigeru Nakamura, Yoshito Tsunoda |
1988-03-15 |
| 4710909 |
Phase compensation apparatus for an optical information recording and reproducing system |
Toshiaki Tsuyoshi, Seiji Yonezawa, Motoo Uno |
1987-12-01 |