Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12374863 | Light-emission driving device and light-emitting device | Takeshi Yuwaki, Akihito Kamiegawa, Hayato Kamizuru | 2025-07-29 |
| 12149046 | Light emission drive circuit and light emission device | Hayato Kamizuru, Hiroyuki Shoubu | 2024-11-19 |
| 11973314 | Light-source drive device and light-emitting device | Hayato Kamizuru, Takeshi Yuwaki, Akihito Kamiegawa, Naoki Masumitsu | 2024-04-30 |
| 11901700 | Driving device, driving method, and light-emitting unit | Naoki Masumitsu, Akihito Kamiegawa, Takeshi Yuwaki, Shouichi Kuroki, Masatoshi Kitada +1 more | 2024-02-13 |
| 9136670 | Correction circuit, drive circuit, light emission unit, and method of correcting current pulse waveform | Osamu Maeda | 2015-09-15 |
| 8976827 | Driving device and light-emitting unit | — | 2015-03-10 |
| 8829813 | Correction circuit, drive circuit, light-emitting device and correction method of current pulse waveform | Osamu Maeda, Takeshi Yuwaki, Koichi Kobe, Hirofumi Nakano, Takahiro Arakida | 2014-09-09 |
| 8619827 | Correction circuit, drive circuit, light emitting device, and method of correcting current pulse waveform | Osamu Maeda, Koichi Kobe, Takehiro Taniguchi, Takahiro Arakida | 2013-12-31 |
| 7991032 | Laser drive | Takahiro Tsukada | 2011-08-02 |
| 7864652 | Gain control circuit and optical recording and reproducing device using thereof | — | 2011-01-04 |
| 7459971 | Amplifier circuit | Tomoyuki Hiro | 2008-12-02 |
| 7375584 | Gain adjustment method, gain adjustment circuit, and optical disc device having same gain adjustment circuit | — | 2008-05-20 |
| 7265624 | Amplifier circuit | Tomoyuki Hiro | 2007-09-04 |
| 6624676 | Asymmetry detection circuit and detection method of same | — | 2003-09-23 |
| 6597650 | Nonlinearity compensation circuit and method, control circuit and method for nonlinearity compenstation circuit and recording and/or playback apparatus employing the same | Masayuki Katakura, Junkichi Sugita, Norio Shoji, Masato Sekine, Kimimasa Senba | 2003-07-22 |