Apparatus for optical disc storage of optical discs and selectiv

Details Apparatus for optical disc storage of optical discs and selectiv Apparatus for optical disc storage of optical discs and selectiv

1993-11-05

1996-06-18

Levy, Stuart S.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369191, 221278, G11B 1724

Patent

active

055285660

ABSTRACT:
A mass memory storage system, capable of recording and/or playing back optical discs in any optical disc format. The system contains a plurality of optical discs arranged in a vertical array in the shape of a doughnut with no hole in the middle, each disc being stored in a separate radially oriented track. The system employs a central disc transport mechanism comprised of a plurality of read-head modules each of which is capable of picking up and reading data from or writing data to any optical disc in the system. The read-head modules are mounted on a central bi-directionally rotating platform driven by a stepper motor through a gear assembly. Each track contains one sunken area to store an optical disc and one sunken area from which the optical disc may be picked up by a read-head module. The stepper motor and the read-head modules are under control of a microprocessor. By a motor step-incremental disc location ratio, positional accuracy for alignment of an available read-head module with a track containing a disc to be accessed may be achieved. Discs are moved from the storage area of each track to the pick up area by a pneumatic system which selectively pressurizes a pneumatic channel in the rotating platform and in the selected track.

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