JPH0235680A - Magnetic tape write protecting device - Google Patents

Abstract

PURPOSE:To evade the erroneous loading of a protect ring and to prevent data on a magnetic tape from being destroyed by providing a protect ring guarder part in the periphery of a protect ring loading part. CONSTITUTION:A magnetic tape device 10 having a detecting function 14 capable of detecting the presence/absence of the loading of the protect ring and the protect ring 13 thicker than an on-going one are provided. Furthermore, a magnetic tape medium 11 equipped with a magnetic tape medium loading part 15 capable of loading the thick protect ring 13, the protect ring guarder part 16 capable of loading and guarding the protect ring 13, and a magnetic tape part used as a storage means for data is provided. Here, a part formed wider than conventional width is used as the width guarded by the protect ring guarder part 16 when the protect ring 13 is loaded on the magnetic tape medium 11. In such a way, since loading of the protect ring 13 can be blocked by the protect ring guarder part 16 even when an output processing is desired to perform by loading the protect ring 13 erroneously, it is possible to prevent the destruction of the data due to the mis-operation of an operator from being generated.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to the computer industry as a whole, and more particularly to magnetic tape write protection schemes when handling magnetic tape.

Conventional technology Regarding write protection of magnetic tape media in the past, there are two methods: a hardware-based easy method of managing by attaching a protect ring, and a software-based method of protecting the media by storing the media name etc. in O8 (operating system). A method was known.

Problems to be Solved by the Invention However, with conventional hardware methods, humans (
Because the system was managed by an operator, it had the following drawbacks.

(b) If the protect ring was attached by mistake during processing, the data on the magnetic tape could be destroyed.

(b) In cases where a processed magnetic tape medium is to be used in the next process, it may be destroyed because the user forgets to remove the protect ring.

On the other hand, the software method had the following drawbacks because it was left to O5.

(b) Although it is possible to manage the standard media allowed by O5,
In cases where magnetic tapes are exchanged between different models or manufacturers, it is impossible to manage them on the OS because the label formats are different, and it is powerless.

The present invention has been made in view of the above-mentioned conventional situation,
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a novel magnetic tape write protection device that makes it possible to eliminate the ``double-low point'' inherent in the prior art.

Means for Problem Decomposition In order to achieve the above object, the magnetic tape damage protection device according to the present invention uses a magnetic tape device having a detection function capable of detecting whether or not a protect ring is attached, and a magnetic tape device that is thicker than conventional ones. A magnetic tape medium equipped with a protect ring, a magnetic tape medium mounting part that allows a thick protect ring to be attached, a protect girder part that allows the protect ring to be attached and a card, and a magnetic tape part used as a data storage means. It is characterized by having.

The function of the thicker protect ring is that the conventional width part is the detecting part of the protect ring in a magnetic tape device, and is the width necessary for detection. The thicker portion than the conventional width is the width that is guarded by the protect ring girder section when attaching the protect ring to the magnetic tape medium, and has the function of attaching a thicker protect ring.

Embodiment Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.

1(a) to 1(d) are schematic configuration diagrams showing one embodiment of the present invention, of which (a) is a schematic perspective view of a magnetic tape device to which the present invention is applied, and (b) is a schematic perspective view of a magnetic tape device to which the present invention is applied. (c) is an enlarged front view of the medium, (d) is an enlarged back view of the magnetic tape medium.
) is a front view of the protect ring.

Referring to FIG. 1, reference numeral 10 indicates a magnetic tape device, and the magnetic tape device 10 includes a magnetic tape medium I! and a magnetic helad 12 are attached. The portion indicated by the dashed line in FIG. 1 is an enlarged view of the magnetic tape medium 11 and the protect ring 13 associated therewith. The magnetic tape medium 11 includes a detection section 14 for detecting whether or not a protect ring is attached. A protect ring mounting part 15 to which a thick protect ring can be mounted, and a protect ring girder part 16 to guard the mounting of the protect ring are provided.

Reference numeral 13 denotes a protect ring that is detachably attached to the protect ring attachment section 15.

The magnetic tape device 10 consists of a magnetic tape medium II equipped with a detecting unit 14 for detecting whether a protect ring is attached, a magnetic head 12, a data processing unit, and firmware that enables writing to be prohibited based on the detection result. ing.

As shown in FIG. 2, in the magnetic tape device, when a protect ring is not attached, a detection unit (detection switch) 14 for detecting whether or not a protect ring is attached is in an "OFF" state, and writing is prohibited.

Further, as shown in FIG. 3, when the protect ring is attached, the detection switch 14 is in the 'ON' state, and writing becomes possible.

Regarding the protect girder section, as shown in Figure 4, the conventional protect ring had an outer ring diameter of 109 mm, an inner ring diameter of 97 + * m, and a ring width of 6 m. The width of 6 cm of the ring is the width that is targeted by the detection switch when it is set in a magnetic tape device.

The protect ring 13 used in the present invention maintains compatibility with conventional magnetic tape devices by keeping the diameter of the inner ring the same as the conventional one, thereby making it possible to use conventional magnetic tape devices.

What is different about the present invention is that the diameter of the outer ring of the protect ring 13 is increased (117 mm in Figure 4) and the width of the ring is increased (IOm■ in Figure 4). . A portion 14 in FIG. 4 is a contact point of a detection switch which is the main part of the detection section of the magnetic tape device.

A portion 16 in FIG. 4 is a contact point with the protect ring girder portion of the magnetic tape medium 11, and if the girder portion 16 protrudes, the protect ring 13 cannot be attached.

The magnetic tape medium 11 has features on its back surface as shown in FIG. FIG. 5 is a back view of the magnetic tape medium according to the present invention, and is an enlarged view of FIG. 1(c).

Referring to FIG. 5, 15a is a mounting groove similar to the conventional proticle L-ring. +5b is a mounting groove necessary for mounting the thick protect ring 13 used in the present invention. That is, the magnetic tape medium 11 of the present invention
Is it installed with the mounting groove 15a and +5b apart? 41
5. The aforementioned protect ring girder sections 16 (in this embodiment, three at equal intervals) are provided around the mounting groove 15. In the case shown in FIG. 5, the movable portion 16a of the protect ring girder portion 16 is retracted, and the protect ring 13 can be attached at this time.

FIG. 6 shows the moving part 1 of the protect ring girder section 16.
This figure is similar to FIG. 5 in the case where 6a is protruded, and in this case, it is impossible to attach the protect ring 13.

The present invention is useful for (a) when setting a magnetic tape medium in a magnetic tape device and performing an input/output operation, (b) when attaching and detaching a protect ring from a magnetic tape medium, (c)
Each zero-order operation used when protecting a magnetic tape medium by protruding the protect ring girder portion will be described with reference to the drawings.

(a) Input/output operation FIG. 7 is a sectional view of the magnetic tape device and magnetic tape medium during input operation. The magnetic tape medium 11 with the ring girder part 16 protruding from 10 pieces 1 is transferred to the magnetic tape device I.
O, and the girder section 16 that protrudes during input/output operations operates without contacting the detection section 14 of the magnetic tape device 10.

(b) Attaching and detaching the protect ring FIG. 5 is a back view of the magnetic tape medium 11, and the movable portion 16a of the protect ring girder section 16 is retracted to attach and detach the protect ring.

(C) Write protection of magnetic tape medium FIG. 6 is a back view of the magnetic tape medium, and write protection is achieved by projecting the movable portion 16a of the protect ring girder section 16.

Effects of the Invention The magnetic tape write protection system of the present invention is as described above, and has the following effects.

(a) Even if the protect ring is attached by mistake and an attempt is made to perform output processing, the protect ring cannot be attached due to the protect ring girder section, so damage caused by operator error can be prevented.

(b) Even magnetic tape media that are not subject to write protection due to rough l-wear can be prevented from being destroyed in the same manner.

[Brief explanation of the drawing]

FIGS. 1(a) to 1(d) are schematic configuration diagrams showing one embodiment of a magnetic tape write protection system according to the present invention, of which (a) is a schematic perspective view of a magnetic tape device to which the present invention is applied. (b) is an enlarged surface view of the magnetic tape medium, (c)
is an enlarged back view of the magnetic tape medium. (d) is a front view of the protect ring, FIGS. 2 and 3 are schematic sectional views for explaining the operation of setting a magnetic tape medium in a magnetic tape device, and FIG. 4 is a protect ring used in the present invention. 5 and 6 are rear views of the magnetic tape medium used in the present invention, and FIG. 7 illustrates the operation when the magnetic tape medium used in the present invention is set in a magnetic tape device. FIG. lO...Magnetic tape device, 11...Magnetic tape medium, 12...Magnetic head, 13...Protect ring used in the present invention, 14...Detection unit for detecting whether or not the protect ring is attached (detection switch) Sochi), 15...Protect ring attachment part, 16...Protect ring girder part Patent applicant: NEC Corporation Agent

Claims (1)

[Claims] A magnetic tape device that processes magnetic tape media, a thicker protect ring than before, a protect ring attachment part that allows the thicker protect ring to be attached, and a protect ring installation part that is arranged around the attachment part to guard the attachment of the protect ring. What is claimed is: 1. A magnetic tape write protection device comprising: a protect ring girder section, a protect ring attachment detection section disposed in the attachment section, and a magnetic tape medium having a magnetic tape section for storing data.