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:
Mar. 22, 2005
Filed:
Oct. 01, 2001
Hans C. Mikkelsen, Afton, MN (US);
Stephen H. Anderson, Roseville, MN (US);
Timothy T. Cain, Vadnais Heights, MN (US);
David W. Dorumsgaard, New Brighton, MN (US);
Glenn C. Kaiser, Blaine, MN (US);
Haeng D. Park, Shoreview, MN (US);
Hans C. Mikkelsen, Afton, MN (US);
Stephen H. Anderson, Roseville, MN (US);
Timothy T. Cain, Vadnais Heights, MN (US);
David W. Dorumsgaard, New Brighton, MN (US);
Glenn C. Kaiser, Blaine, MN (US);
Haeng D. Park, Shoreview, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A method for efficiently saving data to tape, preferably within the ANSI X3.27 standard format sends signals to the tape drive to allow the tape drive to buffer the required tape marks, which the standard requires. Although the standard presumed these would be required for synchronization and would be written when produced, we do not adhere to that thinking. Instead we synchronize only at the logical end of the application constructed file, or at the end of the tape in one embodiment, saving time in writing through avoiding stop-start activities of the tape drive, thus allowing newer tape drives to take advantage of the features of the ANSI X3.27 standard. We also provide an embodiment, which allows for non-ANSI standard (i.e., unlabeled) tapes to be used.