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:
Dec. 03, 2002
Filed:
Apr. 27, 2000
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/200 ;
U.S. Cl.
CPC ...
G06F 1/200 ;
Abstract
A virtual tape controller is provided between a changer using DVD media as recording media and a host computer. The virtual tape controller receives commands from the host computer through a magnetic tape interface that emulates the interface to magnetic tape apparatus. Request translation means interprets the commands from the host computer, and generates commands for controlling drives within the changer on the basis of information for indicating the data positions on virtual tapes held at access positions and the positions of the heads of data recorded on virtual tapes on the media held in conversion table holding means.