Spindle motor control method and disk unit

Details Spindle motor control method and disk unit Spindle motor control method and disk unit

1998-02-12

1999-04-13

Masih, Karen

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318 63, 318 65, 318 86, 318362, 318366, H02K 710

Patent

active

058942041

ABSTRACT:
A spindle motor control method stops a spindle motor which rotates in a forward direction in response to a rotation signal. The spindle motor control method includes two steps. First, a brake signal is supplied to the spindle motor for rotating the spindle motor in a reverse direction when stopping the spindle motor which rotates in the forward direction. Second, the rotation signal and the brake signal are put in an OFF state when a frequency generator signal FG, which indicates a rotational phase of the spindle motor and is generated based on an output of the spindle motor, is not detected for a predetermined time.

REFERENCES:
patent: 4794311 (1988-12-01), Kiya et al.
patent: 5184049 (1993-02-01), Kiuchi
patent: 5784990 (1998-07-01), Shimizu et al.

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