发明名称 |
Data synchronization detection device, information recording device, information reproduction device, information recording format, signal processing device, information recording and reproducing device, and information recording medium |
摘要 |
Data synchronization detection means 3 is provided between data identification means 1 and code demodalation means 6 of the data reproduction system, which performs data synchronization detection using the code-modulated data itself; a specified bit pattern generated in the data codeword is calculated in each phase (bit), using a specified bit sequence pattern that is not generated in a specified phase of the data codeword, by the conversion law during code modulation (or there is a specified bit sequence pattern that is generated only in a specified phase of the codeword); the positions of the data codeword partitions are thereby identified. Scrambling is then applied to the write data as required in order to ensure accurate synchronization detection. In addition, the data position is specified by detecting the pattern correlation between the PLO_SYNC section and GAP section. Thanks to this arrangement, a sector format can be employed constituted by PLO_SYNC, DATA, EOC and GAP, without a data synchronization signal.
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申请公布号 |
US2002048327(A1) |
申请公布日期 |
2002.04.25 |
申请号 |
US20010930161 |
申请日期 |
2001.08.16 |
申请人 |
WATANABE YOSHIJU;ITO YASUYUKI |
发明人 |
WATANABE YOSHIJU;ITO YASUYUKI |
分类号 |
G11B20/14;G11B20/10;G11B20/12;G11B27/30;H04L1/00;H04L7/00;H04L7/02;H04L7/04;H04L7/08;(IPC1-7):H04L27/06 |
主分类号 |
G11B20/14 |
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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