Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1988-05-23
1991-07-30
Levy, Stuart S.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 34, 369 39, 360 92, G11B 1722, G11B 1568
Patent
active
050365037
ABSTRACT:
An array of discs are stored in a storage unit, and desired discs are successively selected and taken out of the storage unit by a disc draw/feed mechanism for sequential playback. The disc draw/feed mechanism has a base movable in a direction in which the discs are arrayed in the storage unit, disc holding/reversing means mounted on the base for holding and reversing a selected disc, and position detecting means for detecting when the base has reached a position where the selected disc can be held by the disc holding/reversing means. The position detecting means comprises a positioning indicia group haing positioning indicia arranged along the direction in which the base is movable and aligned respectively with disc storage positions in the storage unit, an absolute address code group disposed parallel to the positioning indicia group and indicating addresses of the positioning indicia, reading means for reading the absolute address code group, and two detectors for detecting the positioning indicia, respectively for non-reversed and reversed conditions of the disc holding/reversing means. This arrangement can compensate for a displacement or deviation of a disc holding body produced with respect to the base when the disc holding/reversing means is reversed or turned around.
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Levy Stuart S.
Pioneer Electronic Corporation
Wells Kenneth B.
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