Systems and methods for enhanced delta compression
US9621666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2014 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Nov 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/245
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for reducing file sizes for files delivered over a network are disclosed. A method comprises receiving a first file comprising sequences of data; creating a hash table having entries corresponding to overlapping sequences of data; receiving a second file comprising sequences of data; comparing each of the sequences of data in the second file to the sequences of data in the hash table to determine sequences of data present in both the first and second files; and creating a third file comprising sequences of data from the second file and representations of locations and lengths of said sequences of data present in both the first and second files.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.