Semiconductor laser driving circuit
文献类型：专利
| 作者 | KUBOTA SHINJI; TAKASHIMA MAKOTO |
| 发表日期 | 1990-11-28 |
| 专利号 | JP1990287930A |
| 著作权人 | 松下電器産業株式会社 |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser driving circuit |
| 英文摘要 | PURPOSE:To reduce a thermal load to a recording film and to prevent the recording film from being broken by bringing an optical output to AC modulation and allowing it to rise, at the time of setting to recording power or erasion power from reproducing power. CONSTITUTION:At the recording time when a recording gate WG is 'H', an analow switch SW4 is selected,and at the reproducing time when the gate WG is 'L', a switch SW5 is selected. Therefore, only at the time of recording, a peak holding circuit 22 detects a peak of a monitor voltage VM and inputs it to a servo-amplifier 4. On the other hand, an AND gate 24 of a recording data control means 23 takes AND of an inversion output of a holding gate HLD and the gate WG and generates a recording set section signal SET. Subsequently, by an AND gate 25, AND to AC modulation data ACDT is taken, and by adding the AC modulation data to regular recording data WDT, recording data WDTT is generated. In such a way, a thermal load to a recording film at the time of setting an optical output is reduced and it is prevented that the recording film is broken and its service life becomes short. |
| 公开日期 | 1990-11-28 |
| 申请日期 | 1989-04-27 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/69057]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 松下電器産業株式会社 |
| 推荐引用方式 GB/T 7714 | KUBOTA SHINJI,TAKASHIMA MAKOTO. Semiconductor laser driving circuit. JP1990287930A. 1990-11-28. |
入库方式： OAI收割
来源：西安光学精密机械研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。