Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8345371 | Information storing device and method for controlling same to record/reproduce information by selecting one of working modes | Yuichi Koizumi, Hideaki Amano, Koji Kodama | 2013-01-01 |
| 7982999 | Information storing device and method for controlling same to record/reproduce information by selecting one of working modes | Yuichi Koizumi, Hideaki Amano, Koji Kodama | 2011-07-19 |
| 6967801 | Adjusting clock frequency in a disk drive and a disk system using the same | Kazuhiko Satake | 2005-11-22 |
| 6865048 | Information storing device and method for controlling same to record/reproduce information by selecting one of working modes | Yuichi Koizumi, Hideaki Amano, Koji Kodama | 2005-03-08 |
| 6577462 | Method and device for recording and reproducing data | Jin Hamada, Terumi Takashi, Tsuneo Hirose | 2003-06-10 |
| 6563658 | Information storing device and method for controlling same to record/reproduce information by selection one of working modes | Yuichi Koizumi, Hideaki Amano, Koji Kodama | 2003-05-13 |
| 6476994 | Information storing device and method for controlling same to record/reproduce information by selecting one of working modes | Yuichi Koizumi, Hideaki Amano, Koji Kodama | 2002-11-05 |
| 6407876 | Magnetic disk apparatus having an accelerometer for detecting acceleration in the positioning direction of the magnetic head | Takashi Yamaguchi, Katsumoto Onoyama, Tsuyoshi Arai, Yoshikatsu Fujii, Hidehiko Numasato +2 more | 2002-06-18 |
| 6400523 | Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset cores | Yukari Katayama, Hitoshi Ogawa, Motoyasu Tsunoda, Tsuneo Hirose, Akira Kojima +4 more | 2002-06-04 |
| 6381087 | Information storing device and method for controlling same to record/reproduce information by selecting one of working modes | Yuichi Koizumi, Hideaki Amano, Koji Kodama | 2002-04-30 |
| 6335845 | Magnetic disk apparatus having an accelerometer for detecting acceleration in the positioning direction of the magnetic head | Takashi Yamaguchi, Katsumoto Onoyama, Tsuyoshi Arai, Yoshikatsu Fujii, Hidehiko Numasato +2 more | 2002-01-01 |
| 6236528 | Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset cores | Yukari Katayama, Hitoshi Ogawa, Motoyasu Tsunoda, Tsuneo Hirose, Akira Kojima +4 more | 2001-05-22 |
| 6151181 | Magnetic disk device with dummy write function | Hidekazu Honda, Koichi Ono, Haruhiko Hosokawa | 2000-11-21 |
| 6151182 | Information storing device and method for controlling same to record/reproduce information by selecting one of working modes | Yuichi Koizumi, Hideaki Amano, Koji Kodama | 2000-11-21 |
| 6108158 | Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset cores | Yukari Katayama, Hitoshi Ogawa, Motoyasu Tsunoda, Tsuneo Hirose, Akira Kojima +4 more | 2000-08-22 |
| 5995310 | Magnetic disk device with dummy write function | Hidekazu Honda, Koichi Ono, Haruhiko Hosokawa | 1999-11-30 |
| 5986845 | Apparatus for positioning magnetic head and method of the same | Takashi Yamaguchi, Katsumoto Onoyama, Tsuyoshi Arai, Yoshikatsu Fujii, Hidehiko Numasato +2 more | 1999-11-16 |
| 5982570 | Information storing device and method for controlling same to record/reproduce information by selecting one of working modes | Yuichi Koizumi, Hideaki Amano, Koji Kodama | 1999-11-09 |
| 5953178 | Magnetic disk apparatus | Akio Takatsuka, Hideaki Amano, Toshiaki Tsuyoshi, Tetsuji Kameoka, Haruhiko Hosokawa +5 more | 1999-09-14 |
| 5715105 | Method of and apparatus for recording on and reproducing from disk-type recording medium having recording tracks with sectors each having an ID area and a data area | Yukari Katayama, Hitoshi Ogawa, Motoyasu Tsunoda, Tsuneo Hirose, Akira Kojima +4 more | 1998-02-03 |
| 5404255 | Disk apparatus and its control method | Masahito Kobayashi, Takashi Yamaguchi, Hiromu Hirai, Hideaki Amano | 1995-04-04 |
| 5159503 | Phase and period synchronization for a slave disk drive | Masahiro Mitamura, Takeo Iwai, Yoshinori Tuneda, Akihiro Nakamura | 1992-10-27 |
| 5105318 | Head positioning device for use in magnetic disk equipment | Toshiyuki Haruna, Yuji Yoshida, Akira Kojima | 1992-04-14 |
| 4803572 | Recording/reproducing method and apparatus of magnetic disk unit in which playback commences before the magnetic head is completely centered on the track | Toshiyuki Haruna, Kenji Nishimura, Yuji Yoshida, Kiyotaka Takahashi, Tsuneo Hirose +4 more | 1989-02-07 |