发明名称 |
Apparatus for controlling monitor photo diode in optical pickup system |
摘要 |
An apparatus for controlling a monitor photo diode (PD) of an optical pickup system monitors an optical power signal output for writing data on or reading data from a disk. The apparatus includes a comparator which compares a voltage signal corresponding to the optical power signal output from the LD with a predetermined reference voltage signal, and a gain selector which selectively issues a gain output from the comparator depending on the type of the optical power signal output from the LD.
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申请公布号 |
US2004081041(A1) |
申请公布日期 |
2004.04.29 |
申请号 |
US20030687994 |
申请日期 |
2003.10.20 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE JUN-HYUK;JEON CHUI-HO;LEE DONG-RYUL;KWON SUNG-DU |
分类号 |
G11B7/125;G11B7/00;G11B7/0045;H01S5/062;H01S5/0683;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/125 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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