Patent ID: 7370367
Filing Date: 2008-05-06
Classification: G11B

Abstract:
1. A data information carrying disc intended to be rotatable by drive means of a reader/player, in use, the disc incorporating security disabling means allowing data/information to be read and/or downloaded when the disc is used for the first time, but preventing such reading after said first time, the disc having an enclosure, said enclosure having an irregular surface defining a jagged area, at least part of a readable surface of the disc being arranged to be covered by a transparent gel/liquid counteracting said jagged area by its position adjacent said jagged area in one part of said enclosure so as to allow reading of said readable surface by disc reading means, the first play of the disc, or operation of eject means of the reader/player, in use, causing the transparent gel/liquid at least partially to move from and no longer counteract at least part of said jagged area, so as to prevent the reading of at least part of by said readable surface by said disc reading means.