Method for copy protection
AssigneeSONY DADC Austria AG
InventorsMarkus Spitzlinger, Andreas Winter, Walter Hinterhoelzl, Peter Eisenmann, Klaus Holzapfel, Dominik Engel, Juergen Gruenberger
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Abstract
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.
Claims27
A method for copy protection, comprising:
- providing audiovisual data or audio data having a genuine playback sequence defined by the content of the audiovisual data or audio data;
- dividing the audiovisual data or audio data into a plurality of portions, the portions having a first order, wherein when the portions are reproduced in the first order the content is reproduced in the genuine playback sequence;
- determining a second order for at least a part of the portions, the second order being different than the first order;
- determining a physical position where, on the record carrier, a respective portion of the plurality of portions is to be stored dependent on the second order.
A method for reproducing content stored on a copy protected record carrier, the record carrier comprising a plurality of portions stored thereon in a second order, the method comprising:
- determining a first order for the portions, the first order being different from the second order, wherein when the portions are reproduced in the first order the content is reproduced in a genuine playback sequence and/or genuine quality;
- reproducing at least a part of the portions consecutively according to the first order.
A device adapted to reproduce content stored on a copy protected record carrier, the record carrier comprising portions stored thereon in a second order, comprising:
- a processor adapted to determine a first order for the portions, the first order being different from the second order;
- an decoding unit adapted to reproduce at least a part of the portions consecutively according to the first order.
A system comprising:
- a device adapted to reproduce content stored on a copy protected record carrier, the record carrier comprising portions stored thereon in a scrambled order, the device including an interface adapted to receive via a network data representing a first order for the portions, the first order being different from the second order, and further including a decoding unit adapted to reproduce at least a part of the portions consecutively according to the first order;
- and
- a server adapted to provide the first order for download by the device.
A device adapted to manufacture a copy protected record carrier, comprising:
- a receiving unit adapted to receive audiovisual data or audio data having a genuine playback sequence defined by the content of the audiovisual data or audio data;
- a data processor adapted to divide the audiovisual data or audio data into a plurality of portions, the portions having a first order, wherein when the portions are reproduced in the first order the content is reproduced in the genuine playback sequence and/or in a genuine quality, wherein the processor is further adapted to determine a second order for at least a part of the portions, the second order being different from the first order;
- a writing unit adapted to write at least a part of the portions onto the record carrier in the second order.
A record carrier, comprising:
- genuine audiovisual content or audio content stored in a plurality of portions on the record carrier in a scrambled order, wherein when the portions are reproduced in the scrambled order, the genuine audiovisual content or genuine audio is not reproduced in its genuine playback sequence.
A Method for copy protection of AV content to be stored on a record carrier, comprising:
- dividing the AV content into a plurality of portions;
- determining an order for at least a part of the portions, wherein when the portions are reproduced in the order at least a part of the AV content is reproduced in a manner that is different to a genuine first order;
- providing all of the portions so as to be stored on the record carrier in the order.
27-115. (canceled)
Dependencies are inferred from the claim text.