Patent ID: 9462316
Filing Date: 2016-10-04
CPC Classification: G06F,H04L,H04N

Claim Text:
1. A method for execution by a playback device, the method comprises: obtaining a unique retrieval matrix of a plurality of retrieval matrixes for a data file based on an identity of the playback device, wherein the data file is encoded into a plurality of sets of encoded broadcast data slices, wherein each playback device of a plurality of playback devices has a corresponding unique retrieval matrix of the plurality of retrieval matrixes, wherein the unique retrieval matrix includes a pillars list and one or more of: a segmenting protocol, a pre-slice data manipulation function, a forward error correction encoding function, a slicing pillar width, a post-slice data manipulation function, a write threshold, and a read threshold, and wherein the pillar list includes one of a number of pillars, wherein the number is between, and including, a slicing pillar width number and a read threshold number; sending a request for retrieval of a set of encoded broadcast data slices of the plurality of sets of encoded broadcast data slices to a dispersed storage network (DSN) memory, wherein the request includes the unique retrieval matrix and identity of the set of encoded broadcast data slices; receiving a subset of the set of encoded broadcast data slices from the DSN memory, wherein the subset of the set of encoded broadcast data slices is based on the unique retrieval matrix; and storing the subset of the sets of encoded broadcast data slices.