Sony Dadc Austria Ag

Sony Corporation

Sony Dadc Corporation

Markus Spitzlinger

Andreas Winter

Klaus Holzapfel

Walter Hinterhoelzl

Peter Eisenmann

Dominik Engel

Juergen Gruenberger

Kenjiro Ueda

Thomas Goebl

Markus Prenn

Walter HINTERHÖLZL

Jürgen GRÜNBERGER

Jürgen Grünberger

A method for copy protection in which an audiovisual or audio data is divided into a plurality of portions. The plurality of portions is at least partly scrambled and prepared so as to be stored on a record carrier in the scrambled order. This is done so that a physical position on the record carrier, e.g., a sector of the record carrier, where a respective portions of the divided data is stored depends on the scrambled order.

Method for copy protection

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

Method and devices for copy protection, copy protected record carrier

A method for copy protection includes providing audiovisual or audio data stored in sectors of a record carrier having a file system, and providing additional data to be stored in further sectors. The method includes generating first and second files referencing respective first and second parts of the sectors and respective further first and second parts of the further sectors, so when the first and second files are completely rendered by a playback device, respective first and second parts of the data and respective further first and second parts of the additional data are reproduced. The method also includes determining program instructions, which when executed by the playback device, control switching between reading the first file and the second file, and when the record carrier is an original, switching is controlled so only the sectors and none of the further sectors are read such that no additional data is reproduced.

An optical disc including: sectors each having a sector ID; a first area having a first set of sectors sequentially arranged on the disc according to their respective IDs; a second area having a second set of sectors sequentially arranged on the disc according to their respective IDs, the second area being located after the first area in respect of a disc scan direction, the second area including all information needed for playback of the entire disc and having at least one sector ID which duplicates that of a sector in the first set of sectors.

Optical disc including two different sets of sectors having identical IDs

Growing community of inventors

Elsbethen, Austria

Markus Spitzlinger