Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7589929 | Servo pattern writing apparatus, servo pattern writing method, servo pattern reading apparatus, and servo pattern reading method | — | 2009-09-15 |
| 6909574 | Disk device conducting a disturbance compensation based on a time-interval measurement in reading servo sectors recorded on a disk | Koichi Aikawa, Akihide Jinzenji | 2005-06-21 |
| 6721122 | Disk drive unit and control method for same | Koichi Aikawa, Susumu Yoshida, Akihide Jinzenji | 2004-04-13 |
| 6690549 | Storage device | Koichi Aikawa, Susumu Yoshida, Akihide Jinzenji, Tomoo Sukagawa, Keiji Aruga +2 more | 2004-02-10 |
| 6522488 | Servo information writing method and storage device | Masakazu Hirano | 2003-02-18 |
| 6295507 | Calibration method for acceleration sensor in storage device and storage device | Koichi Aikawa, Susumu Yoshida, Akihide Jinzenji | 2001-09-25 |
| 6239940 | Disk device and disk device calibrating method | Tatsuhiko Kosugi, Kazunori Mori, Susumu Yoshida | 2001-05-29 |
| 6064541 | Servo pattern writing method for magnetic disk drives, and magnetic disk drive adopting the method | Isamu Tomita, Keiji Aruga | 2000-05-16 |
| 6034830 | Information recording medium having divided cylinder address storage | — | 2000-03-07 |
| 5903411 | Method for reliably positioning a head in a disk drive to a guard band area | Isamu Tomita, Yoshihiro Nakao | 1999-05-11 |
| 5796546 | Disk apparatus for controlling a seek operation of a read/write head to a target location of a recording disk | Hideyuki Watanabe | 1998-08-18 |
| 5784220 | Magnetic disk apparatus, recording and accessing method for performing density recording | Kazuo Nishimura, Hideaki Tanaka, Hiroaki Etoh | 1998-07-21 |
| 5636075 | Magnetic disk apparatus, recording medium, and accessing method for performing constant density recording | Kazuo Nishimura, Hideaki Tanaka, Hiroaki Etoh | 1997-06-03 |
| 5623379 | Method of controlling a start-up of a motor used for a disk apparatus | Kazuo Nishimura | 1997-04-22 |
| 5592347 | Apparatus for measuring offset of head from servo pattern of data surface and disk medium having recorded servo pattern for measurement of offset | Kazunori Mori | 1997-01-07 |
| 5541785 | Magnetic disk apparatus with improved positioning control of magnetic head | Kazunori Mori | 1996-07-30 |
| 5109502 | Head exchange system for disc drive system controlling busy signals in accordance with head offset | Masamichi Suzuki | 1992-04-28 |