Laser driving circuit
文献类型：专利
| 作者 | NARAHARA TATSUYA; CHATANI MASAHIKO |
| 发表日期 | 1989-06-01 |
| 专利号 | JP1989140433A |
| 著作权人 | SONY CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Laser driving circuit |
| 英文摘要 | PURPOSE:To accurately switch a laser output either from reproducing to recording or from the recording to the reproducing at a high speed with simple composition by driving a laser device using a laser driving current either for the recording or for the reproducing in accordance with recording information at the time of the recording and driving the laser device using the laser driving current for the reproducing at the time of the reproducing. CONSTITUTION:A recording pulse control means 21 is provided which synthesizes a binary current signal IDT in accordance with the recording information to a laser driving current IL in accordance with reference voltage VWRITE for the recording and generates a first laser driving current IL1 in accordance with the reference voltage VWRITE for the recording and a second laser driving current IL2 in accordance with reference voltage VREAD for the reproducing. Thereafter, by controlling the binary current signal IDT, the recording pulse control means 21 drives a laser device 4 using either the first laser driving current or the second laser driving current IL1 or IL2 corresponding to the recording information at the time of the recording and using the second laser driving current IL2 at the time of the reproducing. Thus, either the recording or the reproducing can be controlled without switching reference voltage VREF of an automatic power control circuit. |
| 公开日期 | 1989-06-01 |
| 申请日期 | 1987-11-27 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68955]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SONY CORP |
| 推荐引用方式 GB/T 7714 | NARAHARA TATSUYA,CHATANI MASAHIKO. Laser driving circuit. JP1989140433A. 1989-06-01. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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