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. 09, 2013
Filed:
Nov. 05, 2009
Allen Keith Bates, Tucson, AZ (US);
Steven Ross Bentley, Tucson, AZ (US);
Randall Scot Doan, Tucson, AZ (US);
Katsuhiko Hagiwara, Yamato, JP;
Fahnmusa Christian Jangaba, Tucson, AZ (US);
Christine Renee Knibloe, Tucson, AZ (US);
Hisato Matsuo, Kanagawa, JP;
Hirokazu Nakayama, Kanagawa, JP;
Mitsuhiro Nishida, Kanagawa, JP;
Daniel James Winarski, Tucson, AZ (US);
Allen Keith Bates, Tucson, AZ (US);
Steven Ross Bentley, Tucson, AZ (US);
Randall Scot Doan, Tucson, AZ (US);
Katsuhiko Hagiwara, Yamato, JP;
Fahnmusa Christian Jangaba, Tucson, AZ (US);
Christine Renee Knibloe, Tucson, AZ (US);
Hisato Matsuo, Kanagawa, JP;
Hirokazu Nakayama, Kanagawa, JP;
Mitsuhiro Nishida, Kanagawa, JP;
Daniel James Winarski, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A magnetic tape drive having a tape drive system for moving magnetic tape, tape read/write and servo system, tape cartridge load/unload systems, I/O communications, memory; and a control system, operates in three modes to conserve energy consumption. A first low power mode powers the I/O communications, the memory, and the control system. If a magnetic tape cartridge is in loaded position in the magnetic tape drive, the second low power mode powers the same as the first low power mode, and additionally powers the tape drive system to apply tension to a magnetic tape of the magnetic tape cartridge. In the first and the second low power modes, the control system operates the I/O communications, the memory and the control system to respond to and execute commands received at the I/O communications if the commands are executable without magnetic tape access. The third, full power mode, is entered if a command received at the I/O communications requires magnetic tape access.