STORAGE DEVICE AND ITS CONTROL APPARATUS

PROBLEM TO BE SOLVED: To reduce the circuit scale by obtaining a data sector address by computation from a servo sector address by making use of the periodicity of the arrangement of a servo sector and a data sector on a cylinder. SOLUTION: Data sector information which is hard to be computed from a...

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Bibliographic Details
Main Authors MIYAZAWA SHOICHI, OGAWA HITOSHI, KAWAGISHI TADAHIRO, YAMAMOTO KATSUMI, TSUNODA MOTOYASU, NISHINA MASATOSHI
Format Patent
LanguageEnglish
Published 28.03.1997
Edition6
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To reduce the circuit scale by obtaining a data sector address by computation from a servo sector address by making use of the periodicity of the arrangement of a servo sector and a data sector on a cylinder. SOLUTION: Data sector information which is hard to be computed from a servo sector address (SSA) 25 is stored in a data sector information table 47. In conventional cases, it is required to prepare for the same number of piece of information as the number of servo sectors contained in one round of a track. However, in this case, the number of pieces of information is reduced by making use of the property of a boundary. That is to say, the arrangement pattern of a data sector and a servo sector inside one boundary is the same in any boundary. Consequently, it is sufficient to prepare by the same number of piece of information as the number of servo sectors contained inside the boundary.
Bibliography:Application Number: JP19950235702