Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9235472 | Drive array apparatus, controller, data storage apparatus and method for rebuilding drive array | Nobuhiro Sugawara, Hironori Kanno, Yasuyuki Nagashima, Seiji Toda, Kotaro Yamamoto +1 more | 2016-01-12 |
| 9177582 | Magnetic disk apparatus and off-tracking detection method | Takayuki Kawabe | 2015-11-03 |
| 8929019 | Read/write apparatus and read/write method | Naoki Tagami | 2015-01-06 |
| 8027118 | Method and apparatus for controlling head with spin-torque oscillator in a disk drive | Toru Ezawa, Shuichi Kojima, Kenichiro Yamada, Katsuhiko Koui, Masayuki Takagishi | 2011-09-27 |
| 7492543 | Control device, control method, and storage apparatus for controlling read head and write head clearance | Nobuyuki Mitsunaga, Hiroyuki Tanaka, Isamu Tomita, Masao Kondo | 2009-02-17 |
| 7463438 | Information storage apparatus, and control method and program for the same | Tatsuhiko Kosugi | 2008-12-09 |
| 7272527 | Method of test of clock generation circuit in electronic device, and electronic device | Hiroyuki Suto, Osamu Kawashima, Michihiko Umeda | 2007-09-18 |
| 6130793 | Thermal asperity detection method, thermal asperity compensation method, magnetic disk unit and retry method therefor | Hideki Ohmori, Isamu Tomita | 2000-10-10 |
| 6124998 | Information storage device | — | 2000-09-26 |
| 6021025 | Disk apparatus having an actuator for moving heads | Yukihiro Komura, Yoshiaki Nagasawa, Hajime Miura | 2000-02-01 |
| 6002538 | PRML regenerating apparatus having adjusted slice levels | Katutoshi Asai, Yoshihiro Hashimura, Hideki Ohmori, Masahito Iwatsubo, Masao Kondou +2 more | 1999-12-14 |
| 5841602 | PRML regenerating apparatus | Masao Kondou | 1998-11-24 |
| 5825570 | PRML regenerating apparatus having reduced number of charge pump circuits | Masao Kondou, Tomoki Sugaya, Hiroyuki Tanaka | 1998-10-20 |
| 5694265 | Disk apparatus for detecting position of head by reading phase servo pattern | Tatsuhiko Kosugi, Susumu Yoshida, Makoto Chiba, Syuichi Hashimoto | 1997-12-02 |
| 5689655 | Apparatus for connecting and disconnecting drives under active state | Hiroyuki Tanaka | 1997-11-18 |
| 5675446 | Method of controlling magnetic disk unit based on version data | Tatsuhiko Kosugi, Nobuyuki Suzuki | 1997-10-07 |
| 5440434 | Reproduced waveform equilizing circuit for thin-film magnetic head | — | 1995-08-08 |
| 5068753 | Data reproducing circuit for memory system having an equalizer generating two different equalizing signals used for data reproduction | — | 1991-11-26 |