发明授权
- 专利标题: Laser power control device
- 专利标题(中): 激光功率控制装置
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申请号: US10705240申请日: 2003-11-12
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公开(公告)号: US07248553B2公开(公告)日: 2007-07-24
- 发明人: Sung-du Kwon , Jun-hyuk Lee , Yong-jun Cho , Jung-koog Lee , Hyun-cheal Bang
- 申请人: Sung-du Kwon , Jun-hyuk Lee , Yong-jun Cho , Jung-koog Lee , Hyun-cheal Bang
- 申请人地址: KR Suwon-Si
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Suwon-Si
- 代理机构: Staas & Halsey LLP
- 优先权: KR2002-70057 20021112
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
A laser power control device for use in an optical recording and/or reproducing apparatus that records data on and/or reproduces data from an optical recording medium by driving a laser diode with a laser diode driver. The device includes: a peak power monitor which monitors a peak power by a sample-and-hold operation, the peak power being output by the laser diode when pits are formed in the optical recording medium; an elimination power monitor which monitors an elimination power by the sample-and-hold operation, the elimination power being output by the laser diode when a space between pits of the optical recording medium is formed; a peak power setter which sets a peak power in the laser diode driver based on a monitoring result of the peak power monitor; an elimination power setter which sets an elimination power in the laser diode driver based on a monitoring result of the elimination power monitor; and a bias power setter which sets a bias power in the laser diode driver based on the monitoring results of the peak power monitor and the elimination power monitor.
公开/授权文献
- US20040184378A1 Laser power control device 公开/授权日:2004-09-23
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