Importance

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Abstract

A disc player moves a selected disc between a playback position and a stocker. Carriages, for holding discs, are stacked concentrically and pivotally supported tightly together within the stocker. The carriages are extracted from the stocker by lifting a front end of an adjacent carriage above the selected carriage. A shuttle then moves the selected carriage from the stocker to the playback position. When the disc player is turned on, the device goes through an initialization sequence to determine whether the carriage, aligned with the playback position, is in the store position within the stocker. If not, the shuttle moves the carriage to the store position. If the carriage and shuttle do not return to the store position within a predetermined period of time, then the disc player attempts to re-engage the shuttle with the carriage by shifting the stocker slightly to clear the shuttle path, while attempting to drive the shuttle to its home position.

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First Claim