Optical disc having a reduced planar thickness

G - Physics – 11 – B

Patent

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Details

G11B 7/24 (2006.01) G11B 7/26 (2006.01)

Patent

CA 2600340

In accordance with the teachings of the present invention, an optical disc having a reduced planar thickness is provided. In accordance with a particular embodiment of the present invention, the optical disc includes a central clamping area that defines a central aperture operable to be engaged by a spindle mechanism of an optical disc drive, an optically-readable data storage area substantially surrounding the central clamping area, the optically- readable data storage area having a planar thickness of less than 1.20 mm, and one or more stacker elements coupled to, or integral with, the central clamping area, the stacker elements configured to increase the thickness of the central clamping area above the planar thickness of the optically-readable data storage area. In particular embodiments, the optical disc may further include a magnetic stripe disposed upon one surface of the optical disc.

L'invention concerne un disque optique possédant une épaisseur plane limitée. Dans un mode de réalisation, ce disque optique comporte une zone centrale de blocage définissant une ouverture médiane conçue pour faire passer un mécanisme à broche d'unité de disque optique, une zone de mémorisation de données à lecture optique entourant pratiquement cette zone de blocage, ladite zone de mémorisation de données à lecture optique présentant une épaisseur plane inférieure à 1,20 mm, et un ou plusieurs éléments d'empilement accouplés à la zone de blocage centrale ou solidaires de ladite zone, ces éléments d'empilement étant conçus pour augmenter l'épaisseur de la zone de blocage central au-dessus de l'épaisseur plane de la zone de mémorisation de données à lecture optique. Dans des modes de réalisation définis, ce disque optique peut également comprendre une bande magnétique qui est placée sur sa surface.

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