Title:
DISK DRIVE DEVICE
Document Type and Number:
Japanese Patent JP3419738
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to improve the exactness and reliability of servo control by making the first time period for enabling disk operation shorter than a second time period and causing the power down of first and second sub-sets having the first and second time intervals when the first and second time intervals elapse.
SOLUTION: In a first mode of electric power saving, only the spin motor assembly including a spin motor circuit 140 and a spin sequencer 142, a disk controller 181 and an intelligent interface controller 180 receive the electric power. The remaining circuits are subjected to power down. When a microprocessor 14 attains the first mode, there is no electric power consumption within the microprocessor 144. In a second mode, the power down is executed by shutting off all the electronic circuits exclusive of the disk controller 181 and the disk drive intelligent interface controller 180.
Inventors:
More House, The Ames H
Andrews, Thomas Elle, Jr.
Brazieira, John H
Fury, David M
Johnson, Terry Gee
Chessman, H. Ross
Andrews, Thomas Elle, Jr.
Brazieira, John H
Fury, David M
Johnson, Terry Gee
Chessman, H. Ross
Application Number:
JP2000159063A
Publication Date:
June 23, 2003
Filing Date:
February 27, 1989
Export Citation:
Assignee:
Seagate Technology LLC
International Classes:
G06F1/32; G11B5/596; G11B5/60; G11B17/038; G11B19/00; G11B19/06; G11B21/00; G11B21/02; G11B21/08; G11B21/12; G11B21/21; G11B21/22; G11B23/00; G11B25/04; G11B33/12; G11B33/14; (IPC1-7): G11B19/00; G11B19/02
Domestic Patent References:
| JP60177466A | ||||
| JP5789118A | ||||
| JP56134357A | ||||
| JP524172B2 |
Attorney, Agent or Firm:
Akira Asamura (3 outside)