Intermediate power down mode for a rotatable media data...

Details Intermediate power down mode for a rotatable media data... Intermediate power down mode for a rotatable media data...

2006-02-21

2006-02-21

Hindi, Nabil (Department: 2655)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

C369S053370

Reexamination Certificate

active

07002884

ABSTRACT:
The power consumed by a data storage device having at least one disk connected with a spindle can be reduced by reducing the rotation rate of the spindle to a rotation rate greater than zero. In one method in accordance with the present invention, wherein a head is in communication with each disk, the spindle can be rotated at a first rotation rate. The head can be parked and the rotation of the spindle can then be reduced to a rotation rate greater than zero. By reducing the rotation rate of the spindle, the power consumed by the spindle can be reduced by approximately the ratio of spin speeds to the exponential power of 1.5. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

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patent: 6628470 (2003-09-01), Fujimori
Adaptive Power Management for Mobile Hard Drives, IBM Corporation, Apr. 1999.

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