Reading device and reading method for an optical data recording medium
文献类型：专利
| 作者 | NAKAMURA, ATSUSHI; MIYAGAWA, NAOYASU |
| 发表日期 | 2011-07-15 |
| 专利号 | SG147880A1 |
| 著作权人 | PANASONIC CORPORATION |
| 国家 | 新加坡 |
| 文献子类 | 发明申请 |
| 其他题名 | Reading device and reading method for an optical data recording medium |
| 英文摘要 | A reading devices suppresses deterioration of the recording marks caused by increasing the output laser power to compensate for a drop in the S/N ratio when reading at a high speed information recorded to a high density recording medium. To read information recorded to an optical data recording medium that is written and read using a laser beam output from a semiconductor laser, the reading method modulates a high frequency current on the drive current of the semiconductor laser to output the laser beam, and changes the light modulation rate according to the selected linear velocity used for reading. The light modulation rate is the ratio Pp/Pave between the peak power Pp and the average read power Pave of the light intensity of the high frequency modulated laser beam. |
| 公开日期 | 2008-12-31 |
| 申请日期 | 2007-05-31 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/32656]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | PANASONIC CORPORATION |
| 推荐引用方式 GB/T 7714 | NAKAMURA, ATSUSHI,MIYAGAWA, NAOYASU. Reading device and reading method for an optical data recording medium. SG147880A1. 2011-07-15. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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