发明名称 |
Method for providing improved equalization for the reading of marks on optical data-storage media |
摘要 |
A method is disclosed for compensating for intersymbol interference on an optical disc. The method includes measuring an intersymbol linear transfer function. The intersymbol linear transfer function substantially describes a linear portion of the effect of intersymbol interference on an optically detected read signal from an optical disc. A partial response target frequency response is divided by the intersymbol linear transfer function to obtain a linear equalization filter response. A read signal from the optical disc is convolved with the linear equalization filter response. This results in the read signal being equalized and containing a controlled partial-response target intersymbol interference. There is also disclosed a method of compensating utilizing a decision feedback equalizer where the target frequency response is either a partial-response or a zero-forcing response.
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申请公布号 |
US6377529(B1) |
申请公布日期 |
2002.04.23 |
申请号 |
US20000588101 |
申请日期 |
2000.06.01 |
申请人 |
CALIMETRICS, INC. |
发明人 |
LEE DAVID C.;LING YI;LO YUNG-CHENG;MCLAUGHLIN STEVE W. |
分类号 |
G11B20/10;H04L25/03;H04L25/497;(IPC1-7):G11B3/90 |
主分类号 |
G11B20/10 |
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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