Invention Grant
US08218415B2 Laser power control system and method used in optical disc writer
失效
光盘刻录机中使用的激光功率控制系统和方法
- Patent Title: Laser power control system and method used in optical disc writer
- Patent Title (中): 光盘刻录机中使用的激光功率控制系统和方法
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Application No.: US11949131Application Date: 2007-12-03
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Publication No.: US08218415B2Publication Date: 2012-07-10
- Inventor: Chi-Yuan Liu
- Applicant: Chi-Yuan Liu
- Applicant Address: TW Taipei
- Assignee: Lite-On It Corp.
- Current Assignee: Lite-On It Corp.
- Current Assignee Address: TW Taipei
- Agency: WPAT., P.C.
- Agent Justin King
- Priority: TW96105539A 20070214
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
A laser power control system and method used in an optical disc writer. According to a write power value, the laser power control system drives a laser to output a write power through a first channel. According to a proportional value, the laser power control system drives the laser to output an overdrive power through a second channel. By using a close loop control of the laser power control system, the write power and the overwrite power are independent of the temperature changes.
Public/Granted literature
- US20080192594A1 LASER POWER CONTROL SYSTEM AND METHOD USED IN OPTICAL DISC WRITER Public/Granted day:2008-08-14
Information query
IPC分类:
