Test method of a magnetic disk and magnectic disk tester

A test burst signal is overwritten from a write end position over a connecting region determined by positional deviation between a read head and a write head and a peripheral speed of a disk. Since, therefore, the overwritten signal portion is overlapped on the test burst signal written at a write s...

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Main Authors Shitara, Kenichi, Kato, Haruyoshi
Format Patent
LanguageEnglish
Published 19.04.2011
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Abstract A test burst signal is overwritten from a write end position over a connecting region determined by positional deviation between a read head and a write head and a peripheral speed of a disk. Since, therefore, the overwritten signal portion is overlapped on the test burst signal written at a write start point, it is possible to reduce a width of the connecting region to thereby reduce a test inhibit region.
AbstractList A test burst signal is overwritten from a write end position over a connecting region determined by positional deviation between a read head and a write head and a peripheral speed of a disk. Since, therefore, the overwritten signal portion is overlapped on the test burst signal written at a write start point, it is possible to reduce a width of the connecting region to thereby reduce a test inhibit region.
Author Kato, Haruyoshi
Shitara, Kenichi
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Ogawa et al. (6317281) 20011100
Perez (7109701) 20060900
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Nozu (6696831) 20040200
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Snippet A test burst signal is overwritten from a write end position over a connecting region determined by positional deviation between a read head and a write head...
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Title Test method of a magnetic disk and magnectic disk tester
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