Issued Patents All Time
Showing 26–50 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6483791 | Laser drive integrated circuit and optical disk apparatus using the same | Akihiro Asada, Hideo Ohnuki, Masaaki Kurebayashi, Yasuhito Tanaka, Takashi Hoshino +1 more | 2002-11-19 |
| 6442117 | Reading/reproducing apparatus having retry arrangement upon failed reading/writing of a signal | Eisaku Saiki, Takuya Mizokami, Naoto Matsunami | 2002-08-27 |
| 6442118 | Information recording and reproducing apparatus having semiconductor laser drive circuitry in its pickup | Takashi Hoshino, Akihiro Asada, Takehiko Sekine | 2002-08-27 |
| 6414932 | Information recording/reproducing apparatus with laser driver | Akihiro Asada, Takashi Hoshino | 2002-07-02 |
| 6345023 | Optical disc apparatus with different frequencies of wobble signal and clock signal for rotation control | Tetsuya Fushimi, Toshiaki Ishibashi, Atsushi Saito | 2002-02-05 |
| 6301211 | Information recording/reproducing apparatus | Norimoto Ichikawa, Hiroyuki Minemura, Hisataka Sugiyama | 2001-10-09 |
| 6295258 | Method for recording and reproducing information by pre-pits detection | Toru Kawashima, Takehiko Sekine, Hisataka Sugiyama, Yosiho Suzuki, Tetsuya Fushimi | 2001-09-25 |
| 6246661 | Optical disk recording and retrieving device | Tsuyoshi Toda, Shigeki Yamazaki | 2001-06-12 |
| 6188654 | Method and apparatus for recording/reproducing by pre-pits detection | Toru Kawashima, Takehiko Sekine, Hisataka Sugiyama, Yosiho Suzuki, Tetsuya Fushimi | 2001-02-13 |
| 6125093 | Optical disk recording and retrieving device | Tsuyoshi Toda, Shigeki Yamazaki | 2000-09-26 |
| 6088307 | Wobble signal detecting circuit, wobble abnormality detecting circuit, information processing apparatus using these circuits and method and recording medium used in the apparatus or method | Tetsuya Fushimi, Tetsuya Ikeda, Toshiaki Ishibashi, Kazuo Shigematsu | 2000-07-11 |
| 5974021 | Determination of optimal recording power in optical disk recording and retrieving device | Tsuyoshi Toda, Shigeki Yamazaki | 1999-10-26 |
| 5848045 | Method for recording and reading an optical disk | Fumiyoshi Kirino, Tsuyoshi Toda, Hiroshi Ide, Hisataka Sugiyama, Atsushi Saito +6 more | 1998-12-08 |
| 5732061 | Recording method using trial write test pattern | Fumiyoshi Kirino, Takeshi Maeda, Hiroshi Ide, Seiichi Mita, 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 |
| 5644554 | Magnetic head load/unload device, method and a magneto-optical disk apparatus using the same | Kunio Harada, Masuo Kasai, Masahiro Ojima | 1997-07-01 |
| 5642343 | Magnetooptic disc apparatus and recording medium | Tsuyoshi Toda, Kazuo Shigematsu, Seiichi Mita, Takeshi Maeda, Fumiyoshi Kirino +2 more | 1997-06-24 |
| 5629913 | Optical disk recording control method and apparatus for recording user data based on test signal | Masahiko Ishimaru | 1997-05-13 |
| 5590111 | Method of controlling recording of optical records | Fumiyoshi Kirino, Takeshi Maeda, Hiroshi Ide, Seiichi Mita, 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 | Seiichi Mita, Toru Kawashima, Masanori Matsuzaki, 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 | Seiichi Mita, Toru Kawashima | 1995-05-02 |
| 5404348 | Method for recording and reproducing information using at least two energy beams | Motoyasu Terao, Kunikazu Ohnishi, Tesuya Nishida, Hiroshi Yasuoka, Keikichi Ando +3 more | 1995-04-04 |
| 5339319 | Rotary type storage apparatus and control method thereof | Yuji Yamane, Yasushi Fukuda, Hitoshi Komatsu, Nobuhiro Matsumura, Shigenori Okamine +3 more | 1994-08-16 |