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DATA PROCESSING APPARATUS AND METHOD OF PROCESSING DATA

  • US 20110040763A1
  • Filed: 04/25/2008
  • Published: 02/17/2011
  • Est. Priority Date: 04/25/2008
  • Status: Active Grant
First Claim
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1. Data processing apparatus comprising:

  • a chunk store containing specimen data chunks,a manifest store containing a plurality of manifests, each of which represents at least a part of previously processed data and comprises at least one reference to at least one of said specimen data chunks,a sparse chunk index containing information on only some specimen data chunks,the processing apparatus being operable to;

    process input data into a plurality of input data segments, each composed of input data chunks;

    identify a first set of manifests, where each manifest of the first set has at least one reference to one of said specimen data chunks that corresponds to one of the input data chunks of a first input data segment, and on which there is information contained in the sparse chunk index;

    identify specimen data chunks corresponding to other input data chunks of the first input data segment by using the identified first set of manifests and at least one manifest identified when processing previous data.

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