Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8144415 | Apparatus, signal-processing circuit and device for magnetic recording system | Hideki Sawaguchi, Yasutaka Nishida, Hisashi Takano | 2012-03-27 |
| 7817367 | Apparatus, signal-processing circuit and device for magnetic recording system | Hideki Sawaguchi, Yasutaka Nishida, Hisashi Takano | 2010-10-19 |
| 7612960 | Method for formatting data sectors on magnetic disk, and magnetic disk drive | Naoki Satoh, Terumi Takashi, Hitoshi Ogawa | 2009-11-03 |
| 7502189 | Apparatus, signal-processing circuit and device for magnetic recording system | Hideki Sawaguchi, Yasutaka Nishida, Hisashi Takano | 2009-03-10 |
| 7486460 | Disk drive with enhanced storage capacity increase ratio | Naoki Satoh, Terumi Takashi | 2009-02-03 |
| 7440221 | Calibration of reader/writer offset in hard disk drive using shingled recording | Terumi Takashi | 2008-10-21 |
| 7417821 | Information recording apparatus | — | 2008-08-26 |
| 7372656 | disk drive with side erase control | Naoki Satoh, Terumi Takashi | 2008-05-13 |
| 7227818 | Magneto-optical data recording/reproducing method | Tsuyoshi Toda, Takeshi Maeda, Fumio Kugiya, Hiroshi Ide, Fumiyoshi Kirino +2 more | 2007-06-05 |
| 7213195 | Data decoding method and circuit and information recording and reproducing apparatus using the same | Hideki Sawaguchi, Yasutaka Nishida, Masafumi Mochizuki | 2007-05-01 |
| 7159166 | Error correction method, error correction circuit and information-recording/reproduction apparatus | — | 2007-01-02 |
| 7142379 | Preamble pattern and magnetic recording system using the pattern | — | 2006-11-28 |
| 7024617 | Data decoding method and circuit and information recording and reproducing apparatus using the same | Hideki Sawaguchi, Yasutaka Nishida, Masafumi Mochizuki | 2006-04-04 |
| 6785074 | Preamble pattern and magnetic recording system using the pattern | — | 2004-08-31 |
| 6654325 | Trial writing method and optical disk system using the same | Hiroyuki Minemura | 2003-11-25 |
| 6477131 | Head amplifier and an optical disk device using the same | Hiroyuki Minemura | 2002-11-05 |
| 6320834 | Data demodulating method and optical disk device using the method | — | 2001-11-20 |
| 6215751 | Data demodulating method and optical disk device using the method | — | 2001-04-10 |
| 5848045 | Method for recording and reading an optical disk | Fumiyoshi Kirino, Tsuyoshi Toda, Hiroshi Ide, Hisataka Sugiyama, Atsushi Saito +6 more | 1998-12-08 |
| 5828636 | Optical disk apparatus having optimized focus shift mechanism control | Kiyoshi Matsumoto, Tsuyoshi Toda | 1998-10-27 |
| 5790482 | Optical disk apparatus for recording information using a light intensity modulation method with a partial response detector | Hideki Saga, Hirofumi Sukeda | 1998-08-04 |
| 5703855 | Optical disk apparatus and recording and reading method for an optical disk using the same | Fumiyoshi Kirino, Tsuyoshi Toda, Horishi Ide, Hisataka Sugiyama, Atsushi Saito +6 more | 1997-12-30 |
| 5572503 | Correcting non-linear distortions of optical information with a non-linear equalizer | Naoki Satoh, Takeshi Maeda, Atsushi Saito, Hisataka Sugiyama, Hirofumi Sukeda +1 more | 1996-11-05 |
| 5513165 | Method for controlling the farm of a magnetic domain of a magneto-optical disk using pre-write testing | Hiroshi Ide, Fumiyoshi Kirino, Tsuyashi Toda, Takeshi Maeda, Fumio Kugiya +4 more | 1996-04-30 |
| 5497361 | Information reproducing apparatus with a DC level correcting capability | Seiichi Mita, Toru Kawashima, Masanori Matsuzaki, Toshimitsu Kaku | 1996-03-05 |