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US 2012/0134650 A1Published application
Method for copy protection
AssigneeSONY DADC Austria AG
InventorsMarkus SPITZLINGER, Andreas WINTER, Walter HINTERHOELZL, Peter EISENMANN, Klaus HOLZAPFEL, Dominik ENGEL, Juergen GRUENBERGER
Life of this patent
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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.
Claims21
A method for copy protection, comprising:
- providing a plurality of AV portions;
- determining a first order for a subset of the plurality of AV portions, wherein when the AV portions are reproduced in the first order content included in the AV portions is reproduced in a genuine playback sequence;
- determining a physical position where, on the record carrier, a respective AV portion is to be stored, wherein the physical position is defined by a second order that is different from the first order;
- providing data representing or identifying the first order to be stored on a server for download.
1 more element
A method for playback of a copy protected record carrier, comprising:
- providing a record carrier comprising a plurality of AV portions, wherein a physical position on the record carrier where a respective AV portion is stored is defined by a second order that is different from a first order, wherein when the AV portions are reproduced in the first order content included in the AV portions is reproduced in a genuine playback sequence;
- downloading the first order from a server;
- playing back the plurality of AV portions in the first order that has been downloaded from the server.
A device for playback of a copy protected record carrier, comprising:
- a playback unit adapted to receive a record carrier comprising a plurality of AV portions, wherein a physical position on the record carrier where a respective AV portion is stored is defined by a second order that is different from a first order, wherein when the AV portions are reproduced in the first order content included in the AV portions is reproduced in a genuine playback sequence;
- a communication unit adapted to download the first order from a server;
- wherein the playback unit is further adapted to play back the plurality of AV portions in the first order that has been downloaded from the server.
A system for copy protecting record carriers, comprising:
- a server adapted to provide a first order for a plurality of AV portions for download;
- a device for playback of a copy protected record carrier, including a playback unit adapted to receive a record carrier comprising the plurality of AV portions, wherein a physical position on the record carrier where a respective AV portion is stored is defined by a second order that is different from the first order, wherein when the AV portions are reproduced in the first order content included in the AV portions is reproduced in a genuine playback sequence, the device further comprising a communication unit adapted to download the first order from the server, wherein the playback unit is further adapted to play back the plurality of AV portions in the first order once it has been downloaded from the server.
A record carrier, comprising:
- a plurality of AV portions stored on the record carrier, arranged such that when the AV portions are reproduced by a playback device in a first order, content included in the AV portions is reproduced in a genuine playback sequence, wherein a physical position on the record carrier where a respective AV portion is stored is defined by a second order that is different from the first order;
- wherein data representing the first order is not stored on the record carrier.
A method for copy protection, comprising:
- providing a plurality of AV portions;
- determining a first order for a subset of the plurality of AV portions, wherein when the AV portions are reproduced in the first order content included in the AV portions is reproduced in a genuine playback sequence;
- determining a physical position where, on the record carrier, a respective AV portion is to be stored, wherein the physical position is defined by a second order that is different from the first order;
- determining a plurality of further first orders, wherein when the AV portions are reproduced in any of the further first orders content included in the AV portions is not reproduced in a genuine playback sequence;
- assigning an index number to the first order and further index numbers to each of the further first orders;
- providing the index number of the first order to be stored on a server for download.
3 more elements
A record carrier, comprising:
- a plurality of AV portions stored on the record carrier, arranged such that when the AV portions are reproduced by a playback device in a first order, content included in the AV portions is reproduced in a genuine playback sequence, wherein a physical position on the record carrier where a respective AV portion is stored is defined by a second order that is different from the first order;
- a plurality of further first orders wherein when the AV portions are reproduced in any of the further first orders content included in the AV portions is not reproduced in a genuine playback sequence;
- an index number of the first order and further index numbers for each of the further first orders;
- program instructions which when executed by a playback device for the record carrier cause the playback device to attempt to download a playback index number from a server, wherein in case the record carrier is an original the playback index number provided by the server is identical to the index number, and to further cause the playback device to determine a playback order based on the playback index number.
1 more element
A device for playback of a copy protected record carrier, comprising:
- a playback unit adapted to receive a record carrier comprising a plurality of AV portions, wherein a physical position on the record carrier where a respective AV portion is stored is defined by a second order that is different from a first order, wherein when the AV portions are reproduced in the first order content included in the AV portions is reproduced in a genuine playback sequence, the record carrier further comprising a plurality of further first orders and an index number for the first order as well as further index numbers for the further first orders;
- a communication unit adapted to download a playback index number from a server;
- wherein the playback unit is further adapted to determine a playback order by matching the playback index number to one of the index number and further index numbers such that, in case the playback index number matches the index number, the playback order corresponds to the first order, and, in case the playback index number matches any of the further index numbers the playback order corresponds to the respective further first order,
- wherein the playback unit is further adapted to play back the AV portions in the playback order.
1 more element
Dependencies are inferred from the claim text.