Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6567230 | Method and system for performing positioning control of a head actuator in a disk device utilizing a digital filter | Akira Tokizono, Sri M. Sri-Jayantha, Tatsuya Sakai, Isao Yoneda, Hien Dang +1 more | 2003-05-20 |
| 6549349 | Adaptive vibration control for servo systems in data storage devices | Sri M. Sri-Jayantha, Arun Sharma, Hien Dang, Yuzo Nakagawa, Akira Tokizono +1 more | 2003-04-15 |
| 6529344 | Method and system for compensating a head positioning servo in a storage device | Akira Tokizono | 2003-03-04 |
| 6414809 | Data storage device servo control apparatus and method | Tatsuya Sakai, Akira Tokizono, Takashi Kuroda | 2002-07-02 |
| 6411056 | System and method for stabilizing disk drive rotation control | Gaku Ikedo, Akinori Yuba | 2002-06-25 |
| 6377418 | Digital filter, servo control unit, and disk drive | Akira Tokizono, Hien Dang, Arun Sharma, Sri M. Sri-Jayantha | 2002-04-23 |
| 6351343 | Arrangement structure of the printed circuit board and the interface cable connector of a magnetic disk drive | Yuzo Nakagawa, Kiyoshi Satoh, Hiroki Kitahori | 2002-02-26 |
| 6337777 | Method and apparatus for controlling data write operations | Nobuya Matsubara, Akira Tokizono | 2002-01-08 |
| 6324132 | Method and system for controlling the positioning of a read/write head of a data recording device | Akira Tokizono, Hiroshi Uchida | 2001-11-27 |
| 6263462 | Testing method and tester | Akiro Hatano, Nobuya Matsubara | 2001-07-17 |
| 6218794 | Spindle motor startup method and apparatus | Yasuhito Shimizu, Akira Tokizono, Akihiro Ohyama | 2001-04-17 |
| 6219196 | Method and apparatus for suppressing mechanical resonance in a disk drive storage device using a notch filter | Tetsuo Semba, Akira Tokizono | 2001-04-17 |
| 6122139 | Disk drive rotary actuator system including synchronous counter torque generator | Sri M. Sri-Jayantha, Arun Sharma, Hien Dang, Vijayeshwar D. Khanna, Gerard McVicker +2 more | 2000-09-19 |
| RE36864 | Optical disk drive and methods for counting the number of tracks on an optical disk | Hiroaki Kubo, Keiichi Okada | 2000-09-12 |
| 5872677 | Magnetic head position detecting method and magnetic disk apparatus | Akira Tokizono, Yuzo Nakagawa | 1999-02-16 |
| 5459309 | Focus acquiring method and optical disk drive | Makoto Takekoshi | 1995-10-17 |
| 5412637 | Method for putting an optical head in a stationary state and optical disk drive apparatus | Kohji Nakase, Hiroaki Kubo | 1995-05-02 |
| 5402402 | Apparatus for controlling a optical disk drive | Hiroaki Kubo, Makoto Takekoshi | 1995-03-28 |
| 5384762 | Focusing servo in an optical disk drive | Hiroaki Kubo, Keiichi Okada | 1995-01-24 |
| 5339299 | Optical disk drive apparatus for searching a target track | Hiroaki Kubo | 1994-08-16 |
| 5255253 | Apparatus and method for controlling the velocity of a disk storage head | Hiroaki Kubo, Keiichi Okada, Makoto Takekoshi | 1993-10-19 |
| 5249168 | Method and apparatus for initializing optical disk drive apparatus | Hiroaki Kubo, Hideo Ueno | 1993-09-28 |
| 5199017 | Optical disk drive and method for counting the number of tracks on an optical disk | Hiroaki Kubo, Keiichi Okada | 1993-03-30 |