Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output command process
Reexamination Certificate
2005-11-04
2010-02-16
Tsai, Henry W. H. (Department: 2184)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output command process
C710S052000, C710S053000, C710S054000, C710S055000, C710S056000, C710S057000, C710S058000, C710S059000, C710S060000, C710S074000, C710S305000, C710S306000, C710S307000, C710S308000, C710S309000, C710S310000, C710S311000, C710S312000, C710S313000, C710S314000, C710S315000, C710S316000, C710S317000, C713S300000, C713S310000, C713S320000, C713S321000, C713S322000, C713S323000, C713S324000
Reexamination Certificate
active
07664884
ABSTRACT:
Embodiments of the present invention provide a media drive that is intended for reduction in power consumption required for serial communications to/from a host, and a power saving method thereof. In one embodiment, a HDD includes: a cache; a host interface for transferring, to a host, transfer data read out from the cache; a host interface manager that controls the execution of commands so as to generate a transfer unnecessary period during which a command and transfer data need not be exchanged with the host; and a MPU that brings a serial communication part of the host interface into a power save mode during the transfer unnecessary period. The host interface manager determines the optimum data transfer timing of transferring data from the cache to the host on the basis of a transfer rate at which data is transferred to the host, and a read rate at which data is read out from a disk into the cache.
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Kanamaru Atsushi
Kawa Tadahisa
Kobayashi Hiromi
Saitoh Hirofumi
Duncan Patrick
Hitachi Global Storage Technologies - Netherlands B.V.
Rhu Kris
Townsend and Townsend / and Crew LLP
Tsai Henry W. H.
LandOfFree
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