发明名称 |
Optical signal converter and method of controlling amplification gain according to rotating speed of optical disc |
摘要 |
An optical signal converter and a method or controlling an amplification gain according to a rotating speed of an optical disc. An optical signal detector detects an optical signal reflected from an optical disc in a reproduction mode and converts the detected optical signal into an electrical signal. A gain control signal generator generates a gain control signal when a voltage level of a driving signal used to drive the optical disc exceeds a maximum output voltage of the optical signal converter. A gain switcher selects an amplification gain of the optical signal converter in response to the gain control signal and an external control signal. A signal amplifier amplifies a signal output from the optical signal detector in response to an output signal of the gain switcher.
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申请公布号 |
US7251206(B2) |
申请公布日期 |
2007.07.31 |
申请号 |
US20040786173 |
申请日期 |
2004.02.26 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
BAEK CHANG-HOON;JEON CHUL-HO;HAN SEUNG-MAN;KWON SUNG-DU |
分类号 |
G11B7/00;G11B7/005;G11B19/12;H03G3/02;H03G3/18 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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地址 |
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