Celebrity Inventors
Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 5832520 - Automatic file differencing and updating system
US Patent Issued on November 3, 1998
Estimated Patent Expiration Date:
November 22, 2016Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
November 22, 2016Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA method and file structure for generating an efficient difference files from and old file and a new file so that a difference file can be transmitted to a second computer system where the difference file and a duplicate of the old file can quickly be used to create a copy of the new file is disclosed. A differencing process compares an old file and a new file to generate a difference file in which the old file is used as a database of byte strings. The differencing process reads strings of data from the new file, searches for the existence of those strings in the old file, and notes the locations in the old file in which strings in the new file are found and stores in a difference file an indication of the location where a matching string is found and an indication of the length. A specific file structure for the difference file is disclosed.Other References
| InventorAssigneeApplicationNo. 754486 filed on 11/22/1996US Classes:707/203Version managementField of Search707/203Version managementExaminersPrimary: Amsbury, WayneAttorney, Agent or FirmUS Patent References5278979, Version management system using pointers shared by a plurality of versions for indicating active lines of a versionIssued on: 01/11/1994 Inventor: Foster, et al.5418945, File based and highly available hybrid database Issued on: 05/23/1995 Inventor: Carter, et al.5604853, Text editor using insert, update and delete structures for undo and redo operations Issued on: 02/18/1997 Inventor: Nagashima5623656, Script-based data communication system and method utilizing state memory Issued on: 04/22/1997 Inventor: Lyons5644709Method for detecting computer memory access errors Issued on: 07/01/1997 Inventor: Austin International ClassG06F 017/30 |
