Master disc and method of manufacturing the same
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United States of America Patent
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Feb 14, 2006
Grant Date -
Aug 19, 2004
app pub date -
Sep 9, 2003
filing date -
Feb 13, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Magnetic transfer can be performed with high reliability by shortening the magnetic transit interval of servo address information, that is, a section in which '0' or '1' continues. An area for registering information indicating a start position of data inversion or non-inversion of the servo address information is formed between a servo detection pattern and servo address information of the servo signal. When a continuing data section exceeds a predetermined section in a data sequence of the servo address information, the data at the subsequent portion to the exceeding position are inverted or non-inverted, and the exceeding position is registered as a start position for inversion or non-inversion in the area.
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