JP2715669B2 - Cartridge type magnetic tape processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge type magnetic tape processing apparatus.

[0002]

2. Description of the Related Art A conventional cartridge-type magnetic tape processing apparatus has a function of displaying a usage amount at the time of writing of a cartridge-type magnetic tape medium and displaying an error block number after detection of a failure which causes processing to be discontinued during reading or writing. do not have. However, only the error is notified to the host device.

[0003]

In the conventional cartridge-type magnetic tape processing apparatus described above, valid data in a medium must be discarded by discarding the medium, or must be recreated on another medium. There is a disadvantage that the first processing time is wasted.

[0004] Further, in the case of additional recording on a medium in an append mode or the like, since the amount of use is not visible to the operator, the operator is often troubled and the operation time is wasted.

[0005]

SUMMARY OF THE INVENTION A cartridge type magnetic tape processing apparatus of the present invention performs rewinding or rewinding according to an instruction from a host device after starting data writing from the logical start end of the cartridge type magnetic tape to the same medium. First counting means for counting the amount of use of the medium until the second time, second counting means for counting the number of blocks which are processing units of the medium from the logical start of the medium, and the magnetic tape device. First display means for displaying the result of counting by the first counting means on the medium while the medium is being rewound or wound up; and Characterized in that it has a counting result by the counting means of (1).

[0006]

Next, the present invention will be described in more detail with reference to the drawings showing embodiments of the present invention.

FIG. 1 is a block diagram of one embodiment of the present invention.

The cartridge type magnetic tape processing apparatus 1 comprises:
A control unit 2 for controlling the entire apparatus, and after starting writing data to the same medium from a logical start end of a cartridge type magnetic tape 6 (hereinafter simply abbreviated as a magnetic tape 6), rewind or rewind by an instruction from a host apparatus (not shown). Until unloading, the first counter 3 for counting the usage of the medium
And a second counter 4 for counting the number of blocks as a processing unit of the magnetic tape 6 from the logical beginning of the medium in accordance with an instruction from the control unit 2 and rewinding or unloading the magnetic tape 6 according to an instruction from a higher-level device. A first printing unit 5 for printing the result of counting by the first counter 3 in between, and a magnetic tape 6
And a second printing unit 7 for printing the result of counting by the second counter 4 in red by the control unit 2 which has detected a failure to terminate the processing (reading or writing processing).

Next, the operation of this embodiment will be described.

The control unit 2 controls the control signal line 10
, And receives data via the data line 20 or transfers data to a higher-level device. In parallel with the above operation, the control unit 2 writes data to the magnetic tape 6 via the control signal line 14 and the data line 24, reads data from the magnetic tape 6, or positions the magnetic tape 6.

The first counter 3 counts the used amount of the magnetic tape 6 according to a command from the control unit 2 (by the control signal 11). The counting result is always read out via the data line 21, transferred to the first printing unit 5 via the data line 23, and printed (displayed) on a predetermined portion of the medium surface during execution of the rewind or unload command.

The second counter 4 counts the number of blocks, which are processing units of the magnetic tape 6, according to a control command from the control signal 12. The counting result is transmitted to the control unit 2 by the magnetic tape 6.
Is detected via the data line 22, is transferred to the second printing unit 7 via the data line 25, and is printed in red on a predetermined portion of the surface of the magnetic tape 6 (display). Is done.

The first printing unit 5 is attached to a predetermined portion of the cassette surface of the magnetic tape 6 where printing is possible.
The data received via the data line 23 is printed according to a command supplied from the control unit 2 via the control signal line 13.

The second printing section 7 is attached at a printable position on a predetermined portion of the cassette surface of the magnetic tape 6 (a place different from the first printing section), and a control signal line from the control section 2 is provided. In response to a command supplied through the data line 15, the data received on the data line 25 is printed in red.

The first counter 3 is cleared by a signal sent via the control signal line 11 from the control unit 2 which has detected the logical start end, and is counted up during the writing operation of the magnetic tape.

The second counter 4 detects a logical start edge,
The signal is cleared by a signal sent from the control unit 2 via the control signal line 12 and is counted up during the reading or writing operation of the magnetic tape 6.

As described above, the used amount (counting result) from the logical start end and the number of blocks from the logical start end to the detection of a fatal failure are printed on the respective predetermined print sections in the same medium surface.

[0018]

As described above, the present invention improves the operability of the operator by counting the used amount at the time of writing and displaying it on the cartridge section during rewinding or winding.
This has the effect of improving system operation efficiency.

When the processing is terminated due to a serious fault, the number of blocks counted before that is displayed on the surface (cartridge portion) of the same medium, so that the data that can be correctly written (or read) can be validated. It can be. In other words, the data up to the display block can be correctly read out forever, eliminating the need for reprocessing time, improving the operational efficiency of the system, and preventing the occurrence of reprocessing problems. Provision is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram of a cartridge type magnetic tape processing apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cartridge type magnetic tape processing apparatus 2 Control part 3 First counter 4 Second counter 5 First printing part 6 Cartridge type magnetic tape 7 Second printing part

Claims (1)

(57) [Claims] 1. A first method for counting the usage of a medium from the logical beginning of a cartridge type magnetic tape to the time when data is written to the medium and before rewinding or winding is performed in accordance with an instruction from a host device. Counting means, second counting means for counting the number of blocks which are processing units of the medium from the logical start of the medium, and counting results by the first counting means integrated with the magnetic tape device. First display means for displaying on the medium during rewinding or rewinding of the medium, and second display for displaying the counting result of the second counting means on the medium in red when a failure that causes the processing of the medium to be terminated is detected. A magnetic tape processing apparatus having a cartridge type.