Magnetic tape storage apparatus writing status information to ma

Details Magnetic tape storage apparatus writing status information to ma Magnetic tape storage apparatus writing status information to ma

1994-10-05

1996-06-11

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

360 721, 39518507, G01R 3312

Patent

active

055259022

ABSTRACT:
Magnetic tape storage apparatus including a drive unit for writing/reading information on and from a magnetic tape using a rotary head (RH) by the helical scan method and a storage control unit for controlling the drive unit. The magnetic tape storage apparatus further includes a system area formed at a portion of the magnetic tape other than the user area where user data is recorded and is used only by the storage control unit, table read-out device for reading out management information tables relating to the magnetic tape, written in the system area, into a memory device in the storage control unit when the magnetic tape is loaded into the drive unit, table record device, while the storage control unit refers to data of the management information tables, for performing a write/read operation on the user area on the magnetic tape and for writing status information, indicating an abnormal termination of the writing or reading of the magnetic tape, to the management information tables at a header area located at a position after a beginning of the magnetic tape and before the user area, and judgement device for judging an existence of a tape abnormality by reading the status information from the magnetic tape when the magnetic tape is loaded into the drive unit.

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