Appeal No. 2003-1505
Application No. 09/218,037
computer to optimize execution of requests, the disk storage
device may be made less complex, have increased flexibility in
programming while inclusion of redundant and expensive processors
in the storage device can be avoided (specification, page 2).
Representative independent claim 1 is reproduced below:
1. A method for a host processor to optimize access
performance of a disk included in a storage device, comprising:
storing position information representing a rotational
position of said disk;
determining whether one or more requests for access to
data storage locations on said disk are received at a
command queue to be executed; and
when plural requests are received at the command queue
to be executed, reordering a sequence of execution of said
requests to access data storage locations on said disk such
that a request for access to a data storage location nearest
to a position of a read/write head according to said
position information is executed first, and a request for
access to a data storage location farthest away from said
position of said read/write head according to said position
information is executed last so as to reduce a total service
time of said requests.
The Examiner relies on the following references:
Lecourtier et al. (Lecourtier) 4,420,715 Dec. 13, 1983
Pinheiro 4,517,641 May 14, 1985
Glaser et al. (Glaser) 5,237,466 Aug. 17, 1993
Chen et al. (Chen) 5,787,482 Jul. 28, 1998
Rowan et al. (Rowan) 5,886,489 Mar. 23, 1999
(filed Dec. 4, 1996)
2
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