Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6304402 | Equalizer and magnetically recorded-signal reproducer | Yasutaka Nishida, Naoki Satoh, Yoshiju Watanabe | 2001-10-16 |
| 6215744 | Information recording/reproducing method and apparatus using EPRML connection processing system | Terumi Takashi, Naoki Satoh | 2001-04-10 |
| 6144515 | Equalizer having a processing unit for selecting a coefficient out of a coefficient table | Yasutaka Nishida, Naoki Satoh, Yoshiju Watanabe | 2000-11-07 |
| 6104331 | Reproduced signal processing method, reproduced signal processing circuit, and a magnetic storage apparatus | Yoshiteru Ishida, Naoki Satoh, Terumi Takashi, Akihiko Hirano | 2000-08-15 |
| 6069856 | Information recording/reproduction method and apparatus using EPRML connection processing system using concatenated demodulators | Terumi Takashi, Naoki Satoh | 2000-05-30 |
| 5970091 | Equalizer having a processing unit for selecting a coefficient out of a coefficient table | Yasutaka Nishida, Naoki Satoh, Yoshiju Watanabe | 1999-10-19 |
| 5940416 | Digital signal decoding apparatus and a decoding method used therein | Takushi Nishiya, Hideyuki Yamakawa, Shoichi Miyazawa, Yoichi Uehara, Takashi Nara +1 more | 1999-08-17 |
| 5872666 | Decoder circuitry with PRML signal processing for reproducing apparatus | Eisaku Saiki, Kazutosi Ashikawa, Shintaro Suzumura, Shoichi Miyazawa, Tsuguyoshi Hirooka | 1999-02-16 |
| 5867333 | Data recording and reproducing apparatus and phase locked loop circuit for use therein including D/A converters acting as charge pumps and a reference voltage source | Eisaku Saiki, Shintaro Suzumura, Kazutoshi Ashikawa, Tsuguyoshi Hirooka | 1999-02-02 |
| 5848045 | Method for recording and reading an optical disk | Fumiyoshi Kirino, Tsuyoshi Toda, Hiroshi Ide, Hisataka Sugiyama, Atsushi Saito +6 more | 1998-12-08 |
| 5818655 | Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit | Naoki Satoh, Shoichi Miyazawa, Terumi Takashi, Yosuke Hori, Yoshiju Watanabe +8 more | 1998-10-06 |
| 5774470 | Digital signal processor, error detection method, and recording medium reproducer | Takushi Nishiya, Shoichi Miyazawa, Kazutoshi Ashikawa, Ryushi Shimokawa | 1998-06-30 |
| 5732061 | Recording method using trial write test pattern | Fumiyoshi Kirino, Takeshi Maeda, Hiroshi Ide, Toshimitsu Kaku, Kazuo Shigematsu +1 more | 1998-03-24 |
| 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 |
| 5659309 | Data recording/reproducing apparatus having viterbi decoder and method thereof | Terumi Takashi, Yasuhide Ouchi, Akihiko Hirano, Naoki Satoh | 1997-08-19 |
| 5642343 | Magnetooptic disc apparatus and recording medium | Tsuyoshi Toda, Kazuo Shigematsu, Toshimitsu Kaku, Takeshi Maeda, Fumiyoshi Kirino +2 more | 1997-06-24 |
| 5590111 | Method of controlling recording of optical records | Fumiyoshi Kirino, Takeshi Maeda, Hiroshi Ide, Toshimitsu Kaku, Kazuo Shigematsu +1 more | 1996-12-31 |
| 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, Hiroyuki Tsuchinaga +4 more | 1996-04-30 |
| 5497361 | Information reproducing apparatus with a DC level correcting capability | Toru Kawashima, Masanori Matsuzaki, Toshimitsu Kaku, Hiroyuki Tsuchinaga | 1996-03-05 |
| 5457666 | Light modulation method for forming a mark in magneto-optical recording system | Tsuyoshi Toda, Hiroshi Ide, Fumiyoshi Kirino, Takeshi Maeda, Hiroyuki Tsuchinaga +2 more | 1995-10-10 |
| 5412632 | Information reproducing apparatus with a DC level correcting capability | Toru Kawashima, Toshimitsu Kaku | 1995-05-02 |
| 5278868 | Receiver for quadraphase modulation signals | Johannes W. M. Bergmans | 1994-01-11 |
| 5235591 | Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium | Shigeru Nakamura, Eiichi Seya, Masuo Kasai, Masahiro Ojima, Hiroshi Yasuoka +5 more | 1993-08-10 |
| 5151924 | Automatic equalization method and apparatus | Morishi Izumita, Hiroshi Ide, Nobukazu Doi, Yoshinori Okada, Yasuo Inagaki | 1992-09-29 |
| 5131011 | Receiver for data transmission system with nonlinearities | Johannes W. M. Bergmans, Morishi Izumita | 1992-07-14 |