Method for managing the power distributed to a disk drive in a l

Details Method for managing the power distributed to a disk drive in a l Method for managing the power distributed to a disk drive in a l

1994-06-15

1996-01-02

Ray, Gopal C.

Boots, shoes, and leggings

364707, 3642731, 3642732, 3642733, 3642362, 3642481, 364DIG1, G06F 132

Patent

active

054817331

ABSTRACT:
A method for managing the power consumed by a disk drive in a portable laptop computer which includes quantizing predetermined periods of disk inactivity into states which are stored in a state table in memory. Based upon a history of disk accesses by a user, the number of transitions between each pair of states is counted and stored in memory. In view of this history, a future period of disk inactivity can be predicted and said prediction is compared with a threshold value. If the predicted period of disk inactivity is greater than the threshold value, the computer is automatically placed in a low power mode by spinning down the disk. If not, the disk continues to spin.

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