Optical disk drive device capable of detecting misplacement of o

Details Optical disk drive device capable of detecting misplacement of o Optical disk drive device capable of detecting misplacement of o

1995-10-23

1996-12-24

Dinh, Tan

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369258, 369233, G11B 390, G11B 2300

Patent

active

055879829

ABSTRACT:
An optical disk driving apparatus having a function for preventing misplacement of an optical disk within the optical disk driving apparatus, includes: a main body having an opening through which the optical disk moves in and out of the apparatus; a transfer portion for moving the optical disk into and out from the main body; a driving portion for rotatably driving the optical disk inserted into the main body; an optical pickup for detecting information recorded on the optical disk loaded on the driving portion; at least one light emitting portion for irradiating light upon a surface of the optical disk; at least one light receiving portion for receiving light irradiated by the light emitting portion(s) and reflected by the optical disk to detect the inserted state of the optical disk; and a circuit portion for transmitting information detected by the light receiving portion(s) to the transfer portion so that the optical disk is ejected from the apparatus before being loaded onto the driving portion when the optical disk is misplaced.

REFERENCES:
patent: 4453245 (1984-05-01), Sugiyama et al.
patent: 4710908 (1987-12-01), Ohshima et al.
patent: 4733314 (1988-03-01), Ogawa et al.
patent: 4800551 (1989-01-01), Norris
patent: 4805164 (1989-02-01), Yamaguchi et al.
patent: 5130521 (1992-07-01), Shino et al.
patent: 5224079 (1993-06-01), Inoue

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