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:
Nov. 01, 2005
Filed:
Oct. 03, 2002
Thomas A. Bjork, Rochester, MN (US);
Armin H. Christofferson, Rochester, MN (US);
Leon E. Gregg, Rochester, MN (US);
James L. Tilbury, Rochester, MN (US);
Thomas A. Bjork, Rochester, MN (US);
Armin H. Christofferson, Rochester, MN (US);
Leon E. Gregg, Rochester, MN (US);
James L. Tilbury, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides methods and systems for creating and manipulating universal disk format (UDF) data structures having variable amounts of data. For some embodiments, a UDF data structure is formatted with a freespace bitmap field large enough to represent a first amount of data and an area adjacent the freespace bitmap field reserved to allow the freespace bitmap field to expand to represent a second amount of data greater than the first amount of data. The freespace bitmap field may be expanded to represent the second amount of data by increasing a freespace bitmap size field to represent an expanded freespace bitmap field and initializing the expanded portion of the freespace bitmap size field.