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OwnerMichel Riguidel, Thierry Beuzitinventors
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The invention relates to a system for protection against the copying of information for the creation of a protected optical disk. The system comprises, at the premises of the publisher of an application (12), a creation software assembly (10) carried by an auto-protected optical disk comprising an assembly of protection elements allowing the publisher to insert into the application a protection file manifesting his strategic choices of protection. The resulting assembly is transcribed onto a transport disk (CD-R1) so as to be sent to the duplicator's premises. The latter, with the aid of a pre-mastering software assembly (20), reconstructs the content of the definitive disk comprising a protection zone in two parts, in the form of two disks (CD-R2, CD-R3) respectively containing the data of the main track together with the first part of the protection zone and of the second part. The invention applies to the creation of optical disks protected against copying.
A system for protection against the copying of information for the creation of a protected optical disk of the type comprising at least one main spiral track onto which are burnt information marks laid out in sectors whose addresses are substantially sequential along the track, and a protection zone (ZDP) having two parts of substantially the same size, each including a series of sectors designated by identical addresses for each part, each sector of the protection zone including identification information characteristic of the part to which it belongs and one of the parts at least belonging to said main track, said system being characterized in that it comprises:
The system as claimed in any one of the preceding claims, characterized in that said protection file includes the components (100 to 103) of said creation software assembly.
The system as claimed in any one of the preceding claims, characterized in that said creation software assembly (10) is carried by an optical disk which is itself protected by the system according to any one of the preceding claims.
The system as claimed in any one of the preceding claims, characterized in that said pre-mastering software assembly comprises means for generating an image of the data to be stored in said respective means of storage, said means of generating images including a function for calculating the start of the two-part protection zone, a function for calculating the position of the part identifying information, identical to that of said creation software assembly, and a function for writing a sector so as to place said identifying information at the position calculated in each sector to be burnt in said images.
The system as claimed in any one of the preceding claims, characterized in that said transport means (CD-R1) and said storage means (CD-R2, CD-R3) are recordable optical disks.
A process for protection against the copying of information recorded on a protected optical disk of the type comprising at least one main spiral track onto which are burnt information marks laid out in sectors whose addresses are substantially sequential along the track, and a protection zone (ZDP) having two parts of substantially the same size, each including a series of sectors designated by identical addresses for each part, each sector of the protection zone including identification information characteristic of the part to which it belongs and one of the parts at least belonging to said main track, said process being characterized in that it consists in creating a protection file on the basis of software protection elements selected during the creation of said file and in recording said file in the protection zone of the disk.
Dependencies are inferred from the claim text.