Scalable, error resilient DRM for scalable media

Details Scalable, error resilient DRM for scalable media Scalable, error resilient DRM for scalable media

2007-12-25

2007-12-25

Barron, Jr., Gilberto (Department: 2132)

Information security

Access control or authentication

Network

C726S003000, C726S018000, C380S201000, C380S277000, C705S057000, C705S064000

Reexamination Certificate

active

10405973

ABSTRACT:
An exemplary digital rights management engine and related methods divides multimedia content into service level layers, encrypts at least some of the layers, and offers access to the encrypted layers by permission. The multimedia content may be layered using multiple different layering approaches simultaneously, and access to the different types of layers may be offered simultaneously. One of the layers may be left unencrypted to allow free browsing of a low quality service level. An exemplary system of key management for digital rights management is also disclosed.

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