Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-08-15
2006-08-15
Young, Wayne (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S048000, C360S078040
Reexamination Certificate
active
07092198
ABSTRACT:
An access performance adjusting method is adapted to a storage apparatus having a storage to prestore a skew quantity that is used to shift a data write starting position of each track of a recording medium depending on a head moving time required to move a head from one track to another track during a sequential access in which a plurality of tracks of the recording medium are accessed sequentially. The method includes measuring an apparatus performance with respect to a combination of the head and the recording medium, calculating a skew adjusting quantity with respect to the combination based on a reference apparatus performance and the measured apparatus performance, and adjusting the skew quantity read from the storage by the skew adjusting quantity and storing the adjusted skew quantity in the storage as an updated value of the skew quantity.
REFERENCES:
patent: 6684287 (2004-01-01), Ng
patent: 6728054 (2004-04-01), Chng et al.
patent: 2003/0202270 (2003-10-01), Ng et al.
patent: 2000-021106 (2000-01-01), None
patent: 2002-170348 (2002-06-01), None
Fujitsu Limited
Greer Burns & Crain Ltd.
Olson Jason
Young Wayne
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