G - Physics
11
C
352/32.4
G11C 13/06 (2006.01) G11B 19/04 (2006.01) G11B 23/03 (2006.01) G11B 23/30 (2006.01) G11B 23/38 (2006.01)
Patent
CA 2013760
A disc cartridge having a cartridge body accommodating therein a record medium so that the record medium can be recorded and/or reproduced in the accommodated state, a first identifying device movably provided in the cartridge body so as to be switched from the outside so that it can close partly or wholly a rectangular window aperture formed through the cartridge body, and a second identifying device provided in the cartridge body in a half-secured condition so as to close a part of another rectangular window aperture formed through the cartridge body and which cannot be switched from the outside, wherein the first and second identifying devices indicate the kind of optical disc and data necessary for recording and/or reproducing the optical disc incorporated.
Arai Shizuo
Yamamoto Hiroshi
Gowling Lafleur Henderson Llp
Sony Corporation
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