Garlick & Markison
Distribution of unique copies of broadcast data utilizing fault-tolerant retrieval from dispersed storage
A broadcast of data is stored as a plurality of sets of encoded data slices stored using an error coding dispersal storage function. In response to receiving a playback request, a centralized digital video recorder (DVR) identifies a first unique combination of encoded data slices, and determines whether that combination of data slices is available for retrieval. If the data slices are available, they are retrieved. If the data slices are not available, another unique combination of encoded data slices of the plurality of sets of encoded data slices is identified and retrieved, instead. Both combinations of data slices can be used to recreate a unique copy of broadcast data.
INTERNATIONAL BUSINESS MACHINES CORPORATION
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S. Christopher Jason K. Gary W. Wesley Alan E. Timothy W.
Gladwin Resch Grube Leggette Holmes Markison