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US 7,031,470 B1Granted
Protection of data on media recording disks
AssigneeNDS Limited
InventorGershon Bar-On
Life of this patent
Estimating the term…
Abstract
This invention discloses a secure recording medium having at least one of audio, video and software content, comprising a plurality of media recording disks (DVD's) with a disk security chip embedded in each the DVD, each the disk chip comprising a security key, wherein at least two of the DVD's have different disk security keys. A method for protecting access to content recorded on a media recording disk (DVD) is also disclosed.
Claims14
A method for protecting access to content recorded on a media recording disk (DVD), comprising:
- providing a disk security chip on the DVD, said disk security chip managing access to the content of the DVD;
- providing a corresponding player security chip in a DVD player which is operative to play the DVD, said player security chip managing use of a data stream received from the DVD, said disk security chip being in wireless communication with said player security chip;
- and
- providing said disk security chip with a disk key not known to a disk manufacturer,
- wherein said disk security chip, after assuring that said DVD player is authentic, sends said DVD player said disk key.
2 more elements
A method for protecting access to content recorded on a media recording disk (DVD), comprising:
- providing a disk security chip on the DVD, said disk security chip managing access to the content of the DVD;
- and
- providing a corresponding player security chip in a DVD player which is operative to play the DVD, said player security chip managing use of a data stream received from the DVD, said disk security chip being in wireless communication with said player security chip,
- wherein said disk security chip, after assuring that said DVD player is authentic, sends said DVD player a disk key.
1 more element
Dependencies are inferred from the claim text.