A data compression device driver compresses and decompresses files on a disk drive in a computer system when a user copies files from a drive letter assigned to the disk drive to a drive letter assigned to the data compression device driver. Drive parameter blocks for the disk drive and for the data...http://www.google.fr/patents/US5414850?utm_source=gb-gplus-shareBrevet US5414850 - System for transparently compressing data files in a computer system
System for transparently compressing data files in a computer system
