发明名称 |
Storage medium storing copy protection data in burst cutting area using the on-off keying modulation method |
摘要 |
In order to protect copyrighted data on a disk, a method and apparatus for generating a burst cutting area (BCA) on a disk to prevent unauthorized copy, and an information storage medium having a BCA are provided. The information storage medium comprises: a user data recording area; and a burst cutting area (BCA) on which control information is modulated by using on-off keying (OOK) modulation and recorded. According to the method and apparatus, channel bits after BCA data modulation are generated by inserting a start pattern to data bits before modulation such that a separate modulation table is not needed. Accordingly, the recording density in the BCA increases and by using the start pattern, a sync pattern distinguishable from data is generated and can be used as a signal for a phase locked loop (PLL) when data is restored.
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申请公布号 |
US7345979(B2) |
申请公布日期 |
2008.03.18 |
申请号 |
US20040878555 |
申请日期 |
2004.06.29 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM JIN-HAN;SHIM JAE-SEONG;LEE KYUNG-GEUN |
分类号 |
G06F3/06;G11B5/09;G11B20/00;G11B20/12 |
主分类号 |
G06F3/06 |
代理机构 |
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地址 |
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