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:
Jul. 28, 1998
Filed:
Jun. 19, 1997
Chi-Hung Dang, Tucson, AZ (US);
Chi-Thanh Dang, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A file management system facilitates both physical and logical file groupings with convenient access to surplus media for sub-volume expansion. Each item of media includes a local file directory, which provides a list of files stored on the medium, cross-referenced to the files' addresses on the medium. The media items are organized as one or more primary sub-volumes, an auxiliary sub-volume, and a media reservoir. Each primary sub-volume preferably comprises a single sub-directory, and includes one or more media items used to store files of a specific class. Initially each primary sub-volume includes a single piece of media. The library also includes at least one auxiliary sub-volume, which may include multiple sub-directories, to store leftover files that do not fall under classes corresponding to the primary sub-volumes. Files may be stored on the auxiliary sub-volume on a random, 'space available' basis. A media reservoir includes a bank of new, erased, or re-formatted media items available for individual inclusion into the primary and auxiliary sub-volumes as these sub-volumes expand.