System and method for enabling parallel access to serially compressed files
US7756817B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Mar 10, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention is directed towards systems and methods for generating a compressed data file providing access to one or more selected portions of data contained within the data file. The file is partitioned into one or more chunks, a given chunk comprising a separate unit of data representing a subset of data from the file. The one or more chunks are compressed through use of a compression algorithm, and the one or more chunks are combined to form a compressed file. Metadata is also generated that indicates a chunk offset of a given chunk, thereby allowing direct parallel access to one or more given chunks. Similarly, legacy applications may ignore the chunk structure in the compressed file and access the file according to techniques know in the art, thereby preserving backwards compatibility with such legacy applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.