Loading motor control device of optical disc player

Details Loading motor control device of optical disc player Loading motor control device of optical disc player

2006-05-30

2006-05-30

Dinh, Tan (Department: 2653)

Dynamic optical information storage or retrieval

Particular cabinet structure for optical media

Tray or drawer loading or ejecting

C720S631000, C369S030360

Reexamination Certificate

active

07055157

ABSTRACT:
A loading motor control device of an optical device, which controls a loading motor to move a tray for loading or unloading a disc, and to raise and lower a pickup deck. The loading motor control device includes an optical sensor that has a light-emitting portion and a light-receiving portion, which are separated by a predetermined space and are face with each other; and a shutter that is provided on a sliding cam to move back and forth in the predetermined space, and that has a plurality of opening holes, through which a light beam emitted from the light-emitting portion passes, wherein the loading motor is controlled in multiple modes corresponding to the respective positions of the plurality of opening holes. The loading motor can be controlled adequately and correctly in multiple modes and with a simple structure.

REFERENCES:
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patent: 6134205 (2000-10-01), Watanabe
patent: 6584063 (2003-06-01), Nagasaka et al.
patent: 0166483 (1998-09-01), None

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