| Laser control circuit in recordable optical disk drive | |
| SAKANUSHI, YOSHIHIRO | |
| 2001-05-30 | |
| 著作权人 | MITSUMI ELECTRIC CO., LTD. |
| 专利号 | EP0827141B1 |
| 国家 | 欧洲专利局 |
| 文献子类 | 授权发明 |
| 其他题名 | Laser control circuit in recordable optical disk drive |
| 英文摘要 | An improved laser control circuit in a recordable optical disk drive is disclosed. The laser control circuit includes a feeding circuit which supplies an auxiliary current into a bypass capacitor provided on a control line of a drive current switching circuit for a laser diode, so that the charge current for the bypass capacitor is increased. Therefore, the required time to start the emission of the laser beam for recording is reduced. The laser control circuit also includes a control circuit which controls the on/off state of the feeding circuit. The control circuit turns off upon detecting to the transition of the state of the drive current switching circuit to the on state, accordingly it ensure the normal operation of the laser control circuit. |
| 公开日期 | 2001-05-30 |
| 申请日期 | 1997-08-18 |
| 状态 | 失效 |
| 内容类型 | 专利 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33569]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MITSUMI ELECTRIC CO., LTD. |
| 推荐引用方式 GB/T 7714 | SAKANUSHI, YOSHIHIRO. Laser control circuit in recordable optical disk drive. EP0827141B1. 2001-05-30. |
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