Control method for ejecting optical disk from optical disk...

Details Control method for ejecting optical disk from optical disk... Control method for ejecting optical disk from optical disk...

2001-05-17

2003-09-16

Korzuch, William (Department: 2653)

Dynamic information storage or retrieval

With particular cabinet structure

With mechanism to place disc on a turntable

C369S030990

Reexamination Certificate

active

06621784

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a control method for ejecting optical disk from optical disk driver, especially relates to a control method for smoothly and reliably ejecting optical disk from optical disk driver.
BACKGROUND OF THE INVENTION
As shown in
FIGS. 1 and 2
, the optical disk driver
6
a
generally has a magnet
2
a
in a clamping plate
1
a
and a yoke
5
a
of the rotation disk
4
a
on the spindle motor
3
a
. The optical disk
7
a
is clamped by the magnetic force between the magnet
2
a
and the yoke
5
a
. To eject the optical disk
7
a
, the clamping plate
1
a
, the rotation disk
4
a
and the optical disk
7
a
should be separated to one another. The optical disk driver has a controller
8
a
exerting electrical voltage to the tray motor
9
a
. The tray motor
9
a
activates an ejecting mechanism
10
to eject the optical disk
7
a
against the magnetic force of the magnet
2
a.
However, as the optical disk
7
a
is to be ejected, the optical disk driver
6
a
is subjected to shock and vibration due to counter force. Because of the shock and vibration due to counter force, the optical disk
7
a
has problem to mount stably on the tray
11
a
, especially for vertical type optical disk driver.
Therefore, it is desirable to apply a control voltage with suitable level to the tray motor
9
a
in order to suppress the shock and vibration as the optical disk
7
a
is to be ejected.
SUMMARY OF THE INVENTION
It is the object of the present invention to provide a control method for smoothly and reliably ejecting optical disk from optical disk driver.
To achieve above object, the present invention provides a control method for ejecting optical disk from optical disk driver, which is applicable to both vertical type and horizontal type optical disk drivers. The control method firstly measures the minimal voltage require by the tray motor to eject a tray with or without an optical disk loaded thereon. Afterward, the disk loading condition of the tray is examined before the ejecting voltage is applied to the tray motor. The minimal voltage determined in above is applied to the tray motor according to the disk loading condition of the tray.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:


REFERENCES:
patent: 5210725 (1993-05-01), Kase et al.
patent: 5329410 (1994-07-01), Iwamoto
patent: 6005833 (1999-12-01), Yasuma et al.
patent: 6169711 (2001-01-01), Koh
patent: 6496464 (2002-12-01), Yamauchi et al.

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