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...http://www.google.fr/patents/US6604236?utm_source=gb-gplus-shareBrevet US6604236 - System and method for generating file updates for files stored on read-only media
System and method for generating file updates for files stored on read-only ...