Method and control apparatus for controlling startup of...

Details Method and control apparatus for controlling startup of... Method and control apparatus for controlling startup of...

2006-12-19

2006-12-19

Browne, Lynne H. (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power sequencing

C710S008000, C710S074000, C710S114000, C710S310000, C711S114000

Reexamination Certificate

active

07152173

ABSTRACT:
The present invention provides a method and a control apparatus (1) for sequentially controlling the spinning up of a number of IDE_HDDs (30) included in one computer or network server. The method and apparatus works by assigning different ID numbers to different pairs of IDE_HDDs and causing a delay between the start of spin up of each pair. The control apparatus includes a host (10), a plurality of controllers (20), a plurality of power switches (40) and a plurality of IDE_HDDs. When the control apparatus is booted up, each controller receives an ID number from the host and delays activating the power switches connecting a power supply (50) to the IDE_HDDs by a time proportional to the ID number. The present invention thereby avoids too high an instantaneous peak current during booting up and prevents the power supply from being burnt out.

REFERENCES:
patent: 4110809 (1978-08-01), Cronin
patent: 5721840 (1998-02-01), Soga
patent: 6016518 (2000-01-01), Matsushima et al.
patent: 6131142 (2000-10-01), Kamo et al.
patent: 6460099 (2002-10-01), Stryker et al.
patent: 6868501 (2005-03-01), Saitou et al.

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