Issued Patents All Time
Showing 25 most recent of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12327980 | Semiconductor laser driving apparatus, electronic equipment, and manufacturing method of semiconductor laser driving apparatus | Hirohisa Yasukawa, Nobuaki Kaji, Takashi Kobayashi | 2025-06-10 |
| 12009638 | Surface emission laser driving method and surface emission laser device | Osamu Maeda, Shota Watanabe, Jugo Mitomo | 2024-06-11 |
| 9973738 | Control apparatus, control method, driving apparatus, and electronic apparatus | — | 2018-05-15 |
| 9813682 | Laser driving circuit, laser driving method, and device using laser light | Tsutomu Kurihara | 2017-11-07 |
| 9516258 | Laser driving circuit, laser driving method, and device using laser light | Tsutomu Kurihara | 2016-12-06 |
| 9225928 | Laser driving circuit, laser driving method, projector apparatus and apparatus which uses laser light | Tsutomu Kurihara | 2015-12-29 |
| 9154753 | Control apparatus, control method, driving apparatus, and electronic apparatus | — | 2015-10-06 |
| 8369368 | Laser driving device, laser driving method, optical unit, and light device | Tsutomu Kurihara, Koichi Yokoyama | 2013-02-05 |
| 8335144 | Laser driving apparatus, laser driving method, optical apparatus, optical unit and pulse current generation circuit | Hiroyuki Chiba | 2012-12-18 |
| 8279720 | Hard disk apparatus and driving method therefor | — | 2012-10-02 |
| 8228773 | Laser driving device and optical apparatus | Tsutomu Kurihara, Koichi Yokoyama, Toshiaki Yoshihara | 2012-07-24 |
| 8199625 | Laser driving device and method with control signal patterns, reference pulses, and changing pulses | Tsutomu Kurihara, Koichi Yokoyama | 2012-06-12 |
| 8107342 | Laser driving device, optical unit, and light device which can change the setting information for a sampling pulse | Tsutomu Kurihara, Koichi Yokoyama | 2012-01-31 |
| 7852734 | Recording and playback apparatus and optical head | Noriaki Nishi, Hiroaki Mizuma, Kenji Yamamoto, Masatoshi Nishino | 2010-12-14 |
| 7680166 | Laser drive, optical disc apparatus, and laser-driving method | Yasuyuki Takeshita, Hidetaka Kodama | 2010-03-16 |
| 7414952 | Laser driving apparatus and associated methodology of controlling a drive current | Jumpei Kura | 2008-08-19 |
| 7342862 | Optical disc system and control method thereof | — | 2008-03-11 |
| 7230903 | Recording and playback apparatus and optical head including a variable optical coupling efficiency device | Noriaki Nishi, Hiroaki Mizuma, Kenji Yamamoto, Masatoshi Nishino | 2007-06-12 |
| 6891875 | Optical disc device | Toru Nagara | 2005-05-10 |
| 6690632 | Tilt servo apparatus and control method thereof | Takeshi Sato, Alex Bradshaw, Norio Matsuda, Shinichi Naohara | 2004-02-10 |
| 6552984 | Liquid crystal tilt servo apparatus | Hitoshi Yamazaki, Morio Nozaki, Takeshi Sato, Yuichi Kimikawa | 2003-04-22 |
| 6295256 | Focusing bias adjusting apparatus and method in optical recording medium playing apparatus | Yuichi Kimikawa, Hitoshi Yamazaki, Alex Bradshaw, Morio Nozaki | 2001-09-25 |
| 6151280 | Focus jump control apparatus of a player for multilayer recording disc | Shinichi Naohara, Takashi Suzuki, Alex Bradshaw, Norio Matsuda, Kazushige Kawana +1 more | 2000-11-21 |
| 6147942 | Focus control apparatus for multilayer optical recording medium | Hiroyuki Abe, Takeshi Sato, Kazushige Kawana, Hideaki Watarihana, Shinichi Naohara +2 more | 2000-11-14 |
| 6134196 | Carriage controller for multi-layer disc | Takeshi Sato, Takashi Suzuki, Hiroyuki Abe, Hideaki Watarihana, Alex Bradshaw +1 more | 2000-10-17 |