System and method for generating file updates for files stored on read-only media
US6604236B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1999 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Jun 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/1756
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system of the present invention generates a representation of a new version of an original file system with reference to the original file system and the new version of the file system. Use of data from previous versions of the file system reduces the amount of data to be stored in the delta directory map file, delta modification data block file, and delta look up table generated for the data portions unique to the newest version of an original file system. The inventive process produces delta data block records that identify the location of data portions that may be used to generate the newest version of the file system. The data portions may be located in a file in the original file system, a delta modification data block file in a previous version of the original file system or a delta modification data block file for the newest version of the original file system.The method of the present invention is performed by generating a basis index table identifying the data content of an original file system, generating a file of modification data blocks that may be used to modify the data content of the original file system, and generating a delta look up table that identi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.