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:
Sep. 17, 1991
Filed:
Feb. 03, 1989
Hitachi, Ltd., Tokyo, JP;
Abstract
One of the cartridge-type magnetic tapes set in a magazine is loaded into a magnetic tape unit, the magnetic tape thus loaded is data processed in the magnetic tape unit, and the data processed magnetic tape is then unloaded from the magnetic tape unit to be received into the magazine. This series of operations is sequentially repeated for all of the magnetic tapes set in the respective magazine steps. It is judged whether or not the data processed magnetic tapes set in the magazine have been replaced with fresh magnetic tapes yet to be data processed in the middle of the series of operations. If it is decided that the replacement of magnetic tapes has been done, the abovementioned series of operations, namely, the handling operations including the loading of a magnetic tape, data processing of the magnetic tape and receiving (unloading) of the magnetic tape, are continuously done for the magnetic tapes initially set in the magazine but yet to be data processed as well as the magnetic tapes replaced in the magazine and which are yet to be data processed.