发明名称 |
METHOD FOR DETERMINING FOCUSING ERROR GAIN FOR ACCESSING TO OPTICAL DISC |
摘要 |
A label side of a light-scribe optical disc includes a control feature zone recording therein reference information of the optical disc and a label zone to be marked based on the reference information. An optical head is moved in the label zone to determine a first FE gain and a first sub-beam addition (SBAD) signal by way of focusing servo technology. The optical head is further moved in the control feature zone to determine a second SBAD Signal. The first and second SBAD signals are operated to obtain a ratio. The ratio is used with the first FE gain to estimate a second FE gain for accessing to the control feature zone.
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申请公布号 |
US2007201326(A1) |
申请公布日期 |
2007.08.30 |
申请号 |
US20070676683 |
申请日期 |
2007.02.20 |
申请人 |
LITE-ON IT CORP. |
发明人 |
WEI TAO-YEN;CHANG CHING-HSIANG;WANG YI-SHIH |
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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