Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2006-11-29
2009-12-29
Prasad, Chandrika (Department: 2839)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C360S069000
Reexamination Certificate
active
07639493
ABSTRACT:
The storage control device of the present invention reduces power consumption by stopping the flow of power to enclosures that are not being accessed. A plurality of additional enclosures are connected to a base enclosure by means of a daisy-chain connection. The respective additional enclosures are divided into three levels, namely a low usage frequency level, a medium usage frequency level, and a high usage frequency level depending on the connection distance of the additional enclosures from the base enclosure. Drives that have not been accessed for a predetermined time are spun down. When all the drives in the enclosure are in the spin down state, the supply of power from the power supply to the respective drives is stopped. Further, when the flow of power to an additional enclosure located below the enclosure itself has stopped, the switch of the latter enclosure is turned OFF and the flow of power to the additional enclosure is stopped.
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Hori Masanori
Sato Masahiko
Yamanashi Akihito
A. Marquez, Esq. Juan Carlos
Hitachi , Ltd.
Prasad Chandrika
Stites & Harbison PLLC
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