Disc-position display for auto disc changer

Details Disc-position display for auto disc changer Disc-position display for auto disc changer

1995-09-18

2000-05-02

Davis, David D.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

G11B 1704

Patent

active

060580801

ABSTRACT:
In order to determine the presence of the discs 12, each of the discs is pushed out for a predetermined distance from the inner side portal of a stocker by a rotation lever. When the disc is pushed out, the transmission of light from a disc presence detection sensor is obstructed, so that the presence of the discs is detected. When the disc tray is opened, the disc is prevented from accidentally falling due to the disc stopper of the carriage and with the regulation bar of the carriage. When two discs are placed on the disc tray, the lower disc is drawn out between side regulators, and the upper disc is not drawn out due to contact with the disc transfer prevention parts. When a LED is lighted, the light is reflected on each of the light reflectors formed on the display plate next to the discs. With such light, the position of discs corresponding to each of the light reflectors can be accurately confirmed.

REFERENCES:
patent: 4539663 (1985-09-01), Ishibashi et al.
patent: 4685095 (1987-08-01), Rudy et al.
patent: 4853916 (1989-08-01), Tomita
patent: 4929866 (1990-05-01), Murata et al.
patent: 5084859 (1992-01-01), Ishibashi et al.
patent: 5130761 (1992-07-01), Tanaka
patent: 5270989 (1993-12-01), Kimura

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