Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7430085 | Disk device and method of generating signal representing head | Motoyasu Tsunoda, Hitoshi Ogawa, Ryutaro Horita, Takashi Nara, Masatoshi Nishina +1 more | 2008-09-30 |
| 7139143 | Disk device and method of generating signal representing head | Hitoshi Ogawa, Ryutaro Horita, Takashi Nara, Masatoshi Nishina, Katsumi Yamamoto +1 more | 2006-11-21 |
| RE39253 | Apparatus and method for error correction | Hitoshi Ogawa, Masatoshi Nishina, Yukari Katayama | 2006-08-29 |
| 6700721 | Magnetic recording and reproducing apparatus and semiconductor integrated circuit for use in the same comprising a read/write signal processor having an interleave write data generator | Eisaku Saiki, Shintaro Suzumura, Terumi Takashi, Kazutoshi Ashikawa, Tsuguyoshi Hirooka +1 more | 2004-03-02 |
| 6661594 | Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit | Naoki Satoh, Seiichi Mita, Terumi Takashi, Yosuke Hori, Yoshiju Watanabe +8 more | 2003-12-09 |
| 6563656 | Disk device and method of generating signal representing head | Motoyasu Tsunoda, Hitoshi Ogawa, Ryutaro Horita, Takashi Nara, Masatoshi Nishina +1 more | 2003-05-13 |
| 6452736 | Magnetic recording and reproducing apparatus and a read/write amplifier having a signal transmission system with high speed of data write signal | Eisaku Saiki, Shintaro Suzumura, Terumi Takashi, Kazutoshi Ashikawa, Tsuguyoshi Hirooka +1 more | 2002-09-17 |
| 6445522 | Disk device and method of generating signal representing head | Motoyasu Tsunoda, Hitoshi Ogawa, Ryutaro Horita, Takashi Nara, Masatoshi Nishina +1 more | 2002-09-03 |
| 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 |
| 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 |
| 6172828 | Signal processing apparatus and a disk control apparatus, with head positioning control based on digitized servo data | Motoyasu Tsunoda, Hitoshi Ogawa, Ryutaro Horita, Takashi Nara, Masatoshi Nishina +1 more | 2001-01-09 |
| 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 |
| 5953513 | Recording and reproducing device for recording and reproducing information from different kinds of storage media having different sector formats | Eisaku Saiki, Takashi Oeda, Kazuo Shigematsu, Yasunori Kaneda | 1999-09-14 |
| 5940416 | Digital signal decoding apparatus and a decoding method used therein | Takushi Nishiya, Hideyuki Yamakawa, Seiichi Mita, Yoichi Uehara, Takashi Nara +1 more | 1999-08-17 |
| 5937020 | Digital information signal reproducing circuit and digital information system | Kenichi Hase, Ryutaro Horita, Tsuguyoshi Hirooka, Haruto Katsu, Takashi Nara +1 more | 1999-08-10 |
| 5892958 | Peripheral equipment control device | Yukari Nagashige, Kunio Watanabe, Kouji Shida, Shinichi Kojima | 1999-04-06 |
| 5872666 | Decoder circuitry with PRML signal processing for reproducing apparatus | Eisaku Saiki, Kazutosi Ashikawa, Seiichi Mita, Shintaro Suzumura, Tsuguyoshi Hirooka | 1999-02-16 |
| 5818655 | Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit | Naoki Satoh, Seiichi Mita, Terumi Takashi, Yosuke Hori, Yoshiju Watanabe +8 more | 1998-10-06 |
| 5774470 | Digital signal processor, error detection method, and recording medium reproducer | Takushi Nishiya, Kazutoshi Ashikawa, Ryushi Shimokawa, Seiichi Mita | 1998-06-30 |
| 5771248 | Apparatus and method for error correction | Yukari Katayama, Hitoshi Ogawa, Masatoshi Nishina | 1998-06-23 |
| 5745066 | AD converter and magnetic recording/regenerating apparatus using thereof | Tsuguyoshi Hirooka, Ryutaro Horita, Terumi Takashi, Akira Uragami | 1998-04-28 |
| 5740465 | Array disk controller for grouping host commands into a single virtual host command | Naoto Matsunami, Minoru Yoshida, Takashi Oeda, Kiyoshi Honda, Shuji Ohno | 1998-04-14 |
| 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 |
| 5677802 | Phase locked loop circuit with adjustable offset characteristic, method for adjustment and apparatus | Eisaku Saiki, Masashi Mori, Shintaro Suzumura, Terumi Takashi | 1997-10-14 |
| 5675812 | Peripheral equipment control device | Yukari Nagashige, Kunio Watanabe, Kouji Shida, Shinichi Kojima | 1997-10-07 |