Data compression and storage techniques
US7860843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2007 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Apr 9, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Provided are systems and methods for use in data archiving. In one arrangement, compression techniques are provided wherein an earlier version of a data set (e.g., file folder, etc) is utilized as a dictionary of a compression engine to compress a subsequent version of the data set. This compression identifies changes between data sets and allows for storing these differences without duplicating many common portions of the data sets. For a given version of a data set, new information is stored along with metadata used to reconstruct the version from each individual segment saved at different points in time. In this regard, the earlier data set and one or more references to stored segments of a subsequent data set may be utilized to reconstruct the subsequent data set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.