Optical disc play-back device of the carousel type, having a mec

Details Optical disc play-back device of the carousel type, having a mec Optical disc play-back device of the carousel type, having a mec

1992-06-04

1994-03-08

Look, Edward K.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 37, 369 752, G11B 1722

Patent

active

052933628

ABSTRACT:
An optical disc playback device of the so-called "carousel" type comprises a disc transport turntable rotatably mounted within the player housing. The underside of the turntable has an annular ridge with notches formed therein, and the housing comprises a photocouple which detects the presence or absence of the notches. The notches are so configured that each disc-holding section of the turntable has a distinct set of notches associated therewith, and each set of notches includes a central position-indicating notch and disc number-indicating notches disposed symmetrically on both sides of the central position-indicating notch.

REFERENCES:
patent: 4670866 (1987-06-01), Hasegawa et al.
patent: 5115419 (1992-05-01), Akiyama et al.
patent: 5136570 (1992-08-01), Takai et al.
patent: 5157648 (1992-10-01), Okamoto et al.
patent: 5193079 (1993-03-01), Ko et al.

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