Laser power control unit and method for performing auto power control
文献类型：专利
| 作者 | LI, YUNG-CHIH; LIAO, HSUEH-KUN; HSU, CHING-CHUAN |
| 发表日期 | 2007-10-04 |
| 专利号 | US20070230524A1 |
| 著作权人 | MEDIATEK INC. |
| 国家 | 美国 |
| 文献子类 | 发明申请 |
| 其他题名 | Laser power control unit and method for performing auto power control |
| 英文摘要 | A laser power control unit used for controlling the laser power of an optical pick-up unit (OPU) is provided. The laser power control unit includes: at least one analog-to-digital converter (ADC) electrically coupled to the OPU for transferring a front photodiode output signal into a digital feedback signal; and at least one digital control circuit electrically coupled to the ADC for generating a power control signal and outputting the power control signal to the OPU in order to control the laser power of the OPU. The digital control circuit has a compensation circuit used for generating a compensation value according to a difference between the digital feedback signal and a digital target feedback signal so as to adjust the power control signal. The front photodiode output signal corresponds to the laser power of the OPU. |
| 公开日期 | 2007-10-04 |
| 申请日期 | 2007-06-08 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/61429]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MEDIATEK INC. |
| 推荐引用方式 GB/T 7714 | LI, YUNG-CHIH,LIAO, HSUEH-KUN,HSU, CHING-CHUAN. Laser power control unit and method for performing auto power control. US20070230524A1. 2007-10-04. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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