Patent ID: 7106676
Filing Date: 2006-09-12
Classification: G03B,G11B

Abstract:
1. A disc player comprising: a disc receptacle; one or more optionally-pulsing light sources that project incident light into the receptacle when the disc player is operated; one or more optionally-pulsing viewing ports for the receptacle; a rotatable spindle or platen in the receptacle; and an anti-piracy system comprising a verification system adapted to compare verification data obtained from a disc to access control data; wherein the frequency, pulse length, pulse interval, pulse period, color, intensity or a combination thereof of the viewing port and/or light source is either directly or indirectly synchronized with the rotation of the spindle or platen such that when a disc is being played by the disc player, one or more two-dimensional and/or a three-dimensional discrete images are formed on, below or above the viewable surface of the disc by the persistence of vision when the disc is viewed through the viewing port; and the anti-piracy system is adapted to allow or disallow playing of a disc in the receptacle of the player according to instructions received from the verification system.