Patent ID: 9253548
Filing Date: 2016-02-02
CPC Classification: G11B,H04N

Claim Text:
1. A method comprising: establishing a grouping rule and a mapping protocol at a cache server system for caching fragments of a media stream that includes a timed-sequence of video frames, the fragments generated and identified at a plurality of media source systems in accordance with a fragmenting format and an indexing protocol, respectively, which are common across the plurality of media source systems, the established mapping protocol being different from the indexing protocol; retrieving at least a portion of the fragments of the media stream by the cache server system from one or more of the plurality of the media source systems; allocating the retrieved fragments to local fragment groups at the cache server system based on the established grouping rule; and mapping the allocated fragments to the local fragment groups based on the established mapping protocol, the mapping protocol creating a sparse index table corresponding to received requests for the allocated fragments.