Spindle motor controlling method and optical disk drive...

Details Spindle motor controlling method and optical disk drive... Spindle motor controlling method and optical disk drive...

2008-12-01

2010-12-07

Agustin, Peter Vincent (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S047380

Reexamination Certificate

active

07848199

ABSTRACT:
An optical disk drive includes a spindle motor, a power source, a microprocessor, and a comparator. The spindle motor is for supporting a disk. The power source supplies a first voltage to drive the spindle motor to rotate. The microprocessor signals the power source to supply a second voltage to slow down rotational speed of the spindle motor when receiving a power-off signal. The comparator compares the rotational speed with a predetermined value. The microprocessor signals the power source to stop supplying power to the spindle motor when the rotational speed is smaller than the predetermined value. A controlling method for controlling the spindle motor in the optical disk driver is also provided.

REFERENCES:
patent: 5270992 (1993-12-01), Yasuda et al.
patent: 5602805 (1997-02-01), Chigita
patent: 5774292 (1998-06-01), Georgiou et al.
patent: RE36590 (2000-02-01), Yanagi
patent: 6088315 (2000-07-01), Ando
patent: 6603719 (2003-08-01), Wu
patent: 6839309 (2005-01-01), Yunoki et al.
patent: 6876606 (2005-04-01), Kajino et al.
patent: 2003/0198157 (2003-10-01), Smith
patent: 2006/0083134 (2006-04-01), Matsuno et al.
patent: 2007/0070836 (2007-03-01), Kitagawa

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