The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2004
Filed:
Jun. 29, 1999
Koichi Doi, Kawasaki, JP;
Yasuhiko Hanaoka, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A tape apparatus increases throughput of data access requests by rearranging the sequence in which data access requests are processed in order to reduce repositioning of a tape medium. The tape apparatus includes a command queue for storing a plurality of instructions from a host apparatus, and a reordering mechanism for analyzing the stored instructions according to a predetermined set of rules. The sequence of the stored instructions are rearranged in order to minimize driving of the tape medium. The reordering mechanism can select N commands at a time from the head of the command queue, and determine a sequence for executing the N commands, yielding a minimum total driving distance of a medium tape from a current position of the tape medium.