Data synchronization detection method, information recording method, and information reproduction method
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United States of America Patent
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Mar 28, 2006
Grant Date -
Apr 25, 2002
app pub date -
Aug 16, 2001
filing date -
Oct 25, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Data synchronization detection is provided between data identification and code demodulation in a data reproduction system, which performs data synchronization detection using code-modulated data. A specified bit pattern generated in a 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. For example, a specified bit sequence pattern 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.
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