Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2005-04-20
2008-10-14
Peikari, B. James (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C360S069000, C369S019000
Reexamination Certificate
active
07437502
ABSTRACT:
A disk drive is disclosed comprising a disk, a head actuated over the disk, and a history array for storing a plurality of history records, wherein each history record having a history range identifying a range of sector addresses proximate the sector address of a host command. As new host commands are received, the sector address of each host command is compared to the history records in the history array. A counter is adjusted in response to each comparison, and an operating mode of the disk drive is configured into a new operating mode if the counter exceeds a threshold, wherein the configuring includes adjusting at least one of the history range and the threshold relative to the new operating mode.
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Peikari B. James
Sheerin, Esq. Howard H.
Western Digital Technologies Inc.
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