Patent ID: 8978154
Filing Date: 2015-03-10
Classification: G06F,H04N

Abstract:
1. A method of using content including a plurality of content parts, the method comprising: receiving, at a content rendering device via a network, an encoded content file comprising a header and a plurality of content parts, wherein each of the plurality of content parts comprises at least one protection information provided respectively within each of the plurality of content parts, wherein the at least one protection information comprises a content identifier and an encryption parameter and the header comprises information corresponding to each of the plurality of content parts, including corresponding content part identifiers; analyzing the protection information of a content part to extract the content identifier of the content part; mapping the extracted content identifier of the content part to the corresponding content identifier in the header to locate a license required for decoding the content part; determining, based on the mapping of the extracted content identifier, identification information of the content part in the header among the plurality of content parts; acquiring the license of the content part based on the identification information of the content part in the header; and decoding the content part by using the protection information, including the encryption parameter of the content part, and the acquired license.