Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6697976 | Performance evaluation method, performance evaluation system, and information storage apparatus using same | Naoki Satoh, Yasuyuki Ito, Akihiko Hirano, Mikio Suzuki | 2004-02-24 |
| 6661594 | Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit | Naoki Satoh, Seiichi Mita, Shoichi Miyazawa, Yosuke Hori, Yoshiju Watanabe +8 more | 2003-12-09 |
| 6577462 | Method and device for recording and reproducing data | Jin Hamada, Katsuhiro Tsuneta, Tsuneo Hirose | 2003-06-10 |
| 6519715 | Signal processing apparatus and a data recording and reproducing apparatus including local memory processor | Seiichi Mita, Atsushi Saito | 2003-02-11 |
| 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, Kazutoshi Ashikawa, Tsuguyoshi Hirooka, Shoichi Miyazawa +1 more | 2002-09-17 |
| 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 |
| 6334201 | Decoding circuit and information processing apparatus | Hideki Sawaguchi, Akihiko Hirano, Seiichi Mita | 2001-12-25 |
| 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 |
| 6215744 | Information recording/reproducing method and apparatus using EPRML connection processing system | Seiichi Mita, Naoki Satoh | 2001-04-10 |
| 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 |
| 6104331 | Reproduced signal processing method, reproduced signal processing circuit, and a magnetic storage apparatus | Yoshiteru Ishida, Naoki Satoh, Akihiko Hirano, Seiichi Mita | 2000-08-15 |
| 6069856 | Information recording/reproduction method and apparatus using EPRML connection processing system using concatenated demodulators | Seiichi Mita, Naoki Satoh | 2000-05-30 |
| 6034998 | Method of and apparatus for detecting phase | Akihiko Hirano | 2000-03-07 |
| 5844741 | System for reproducing high-density magnetic record data with viterbi detector for generating quadripartite reproduction data | Hideyuki Yamakawa, Takushi Nishiya, Takashi Nara | 1998-12-01 |
| 5841303 | Digital phase-locked loop circuit | Kazunori Iwabuchi, Minoru Kosuge, Hiromi Matsushige, Hideki Miyasaka | 1998-11-24 |
| 5818655 | Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit | Naoki Satoh, Seiichi Mita, Shoichi Miyazawa, Yosuke Hori, Yoshiju Watanabe +8 more | 1998-10-06 |
| 5805024 | Phase lock loop system including a primary phase lock loop apparatus and a high order phase lock loop apparatus | Naoki Satoh, Akihiko Hirano, Eisaku Saiki, Masakazu Hosino, Ryushi Shimokawa | 1998-09-08 |
| 5745066 | AD converter and magnetic recording/regenerating apparatus using thereof | Tsuguyoshi Hirooka, Shoichi Miyazawa, Ryutaro Horita, Akira Uragami | 1998-04-28 |
| 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, Shoichi Miyazawa | 1997-10-14 |
| 5659309 | Data recording/reproducing apparatus having viterbi decoder and method thereof | Yasuhide Ouchi, Seiichi Mita, Akihiko Hirano, Naoki Satoh | 1997-08-19 |
| 5646644 | Liquid crystal display device | Tsutomu Furuhashi, Hiroyuki Mano, Kiyokazu Nishioka, Toshio Futami | 1997-07-08 |
| 5572157 | Digital phase-looked loop circuit | Kazunori Iwabuchi, Minoru Kosuge, Hiromi Matsushige, Hideki Miyasaka | 1996-11-05 |
| 5557274 | Ad converter and magnetic recording/regenerating apparatus using the same | Tsuguyoshi Hirooka, Shoichi Miyazawa, Ryutaro Horita, Akira Uragami | 1996-09-17 |
| 5553104 | Information recording/reproducing apparatus having a clock timing extraction circuit for extracting a clock signal from an input data signal | Akihiko Hirano, Kazunori Iwabuchi, Hideyuki Yamakawa, Yoshiteru Ishida, Kazuhisa Shiraishi +1 more | 1996-09-03 |