The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2004
Filed:
Feb. 02, 2001
Dennis Steven DeLorme, Rochester, MN (US);
Alan Leon Levering, Rochester, MN (US);
Jeffrey John Parker, Rochester, MN (US);
John Christopher Ripstra, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Multiple links to the same object are managed by storing the attributes of the object in only one place. Each directory which links to the object has an object attribute table; each table has a number of entries all capable of storing the attributes of the files linked to the directory. One of the entries in a directory linked to a file stores the attributes of that file, called the master entry; other entries in the same or other directories that also link to the same file have slave entries capable of storing the attributes but not storing the attributes in their respective object attribute table. The file need only address the master entry. The master entry may point to the other slave entries which may point back to the master or to other slave entries as determined by a pointer protocol. When the master entry is to be deallocated, another of the qualified slave entries receives the attribute information and the file is updated to reflect that a new master has been declared. According to the pointer protocol, other slave entries may also be updated.