COPY PROTECTION METHOD, COPY PROTECTION DEVICE, COPY PROTECTION SYSTEM, COPY PROTECTED RECORD CARRIER

摘要

PROBLEM TO BE SOLVED: To improve quality of a copy protection method and a copy protection algorithm.

SOLUTION: A method for copy protection comprises: providing audiovisual data or audio data to be stored in a plurality of sectors of a record carrier having a file system, and additional or modified audiovisual data or audio data to be stored in a plurality of further sectors of the record carrier; generating such that when a first file of the file system referencing at least part of the plurality of sectors and none of further sectors is rendered by a playback device the audiovisual data or audio data is reproduced which is included in the at least part of the plurality of sectors, and such that when a second file referencing at least part of the plurality of sectors and at least part of the plurality of further sectors is reproduced by the playback device, the at least part of the plurality of sectors and the at least part of the plurality of further sectors are reproduced.

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