发明名称 |
Optical disc device and playing method of optical disc |
摘要 |
To determine the optimum amplitude of high frequency signal for the loaded disc with a simple configuration to achieve stable playing performance, there is provided an optical disc device comprising: a light source driven by a drive signal with a high frequency signal superimposed; a detector for detecting return light emitted from the light source; and a controller for controlling amplitude of the high frequency signal to be superimposed on the drive signal for the light source; the optical disc device being configured to read data on an optical disc loaded therein by a signal outputted from the detector, wherein the controller determines the amplitude of the high frequency signal to be superimposed on the drive signal based on asymmetry of the signal outputted from the detector. |
申请公布号 |
US8243576(B2) |
申请公布日期 |
2012.08.14 |
申请号 |
US20100952435 |
申请日期 |
2010.11.23 |
申请人 |
MINAMIGUCHI SHUICHI;SAKAI HIROHARU;NISHIMURA HAJIME;HITACHI-LG DATA STORAGE, INC. |
发明人 |
MINAMIGUCHI SHUICHI;SAKAI HIROHARU;NISHIMURA HAJIME |
分类号 |
G11B7/00 |
主分类号 |
G11B7/00 |
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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