| Light-driving system capable of providing signal-measured calibration and a method for performing the same | |
| CHANG, AN-NAN; CHEN, CHIEN-MING | |
| 2008-09-18 | |
| 著作权人 | MEDIATEK INC. |
| 专利号 | US20080224715A1 |
| 国家 | 美国 |
| 文献子类 | 发明申请 |
| 其他题名 | Light-driving system capable of providing signal-measured calibration and a method for performing the same |
| 英文摘要 | This present invention discloses a light-driving system capable of providing an accurate calibration of signal measurement and a method for performing the same, including an automatic power control (APC) circuit which is pre-calibrated for a signal measurement process. By enlarging at least one measured pad of the APC circuit, multiple grounding paths are established via a plurality of probes of a test instrument. An impedance effect predicted on the contact between the probes and the pad is diminished greatly. A voltage value on the pad can be accurately measured. Thus, a reference voltage value input to a first input of a comparator of the APC circuit can be determined on a basis of a specific condition when a ramping voltage value input to a second input of the comparator is substantially equal to a sum of a predetermined reference voltage value and the voltage value of the pad. |
| 公开日期 | 2008-09-18 |
| 申请日期 | 2007-03-16 |
| 状态 | 授权 |
| 内容类型 | 专利 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/62511]  |
| 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 | CHANG, AN-NAN,CHEN, CHIEN-MING. Light-driving system capable of providing signal-measured calibration and a method for performing the same. US20080224715A1. 2008-09-18. |
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