Dynamic information storage or retrieval – Storage medium structure – Adjuncts or adapters
Patent
1996-02-20
1999-11-23
Cao, Allen T.
Dynamic information storage or retrieval
Storage medium structure
Adjuncts or adapters
360133, G11B 370, G11B 2303
Patent
active
059912600
ABSTRACT:
A disk cartridge and a disk device for receiving the disk cartridge to enable recording and/or reproducing of information from or on a disk housed within the disk cartridge. The disk cartridge includes a disk in which information is recorded and/or reproduced, a case for housing the disk which case has opposite faces including a window in a respective face for exposing a part of the disk therethrough. A shutter is mounted with respect to the case so as to open or close a window of a respective face of the case with the shutter being movable in opposite directions with respect to the window from a position in which the window is closed to a position in which the window is open. The disk cartridge may include an openable part of the case for enabling the disk to be taken in and out of the case through the openable part thereof and a discrimination arrangement for enabling discrimination of different types of disk cartridges from one another. The disk cartridge may be arranged to enable exchange of disks of a same or different format including CD (compact disk), DVD (digital video disk) and PD (phase change disk) and the discrimination arrangement enables prevention of a disk cartridge of one different type from being erroneously inserted into a disk device receiving apparatus which is not compatible for the different type of disk cartridge.
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Inoue Masayuki
Kano Kiyoshi
Miura Michio
Nakamura Masafumi
Ohtsuka Yasuo
Cao Allen T.
Hitachi , Ltd.
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