Disk drive comprising control circuitry powered by a...

Details Disk drive comprising control circuitry powered by a... Disk drive comprising control circuitry powered by a...

2005-04-05

2005-04-05

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

C360S075000, C360S070000

Reexamination Certificate

active

06876508

ABSTRACT:
A disk drive is disclosed comprising an interface for receiving a supply voltage from a host computer and control circuitry for controlling at least one operation of the disk drive. The supply voltage is applied to the windings of a multi-phase spindle motor in a commutation sequence during a normal operating mode, and a secondary voltage supplied by a center tap of the windings is used to power the control circuitry during the normal operating mode.

REFERENCES:
patent: 5210474 (1993-05-01), Oswald
patent: 5223771 (1993-06-01), Chari
patent: 5616993 (1997-04-01), Lu et al.
patent: 5737144 (1998-04-01), Ataee et al.
patent: 5866998 (1999-02-01), Menegoli
patent: 5889629 (1999-03-01), Patton, III
patent: 6163120 (2000-12-01), Menegoli
patent: 1003273 (2000-05-01), None

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