Patent ID: 8441898

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