JP2897720B2 - Magnetic tape unit with information display function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a magnetic tape device, and more particularly to a magnetic tape device used for saving or restoring data handled by a host computer or the like.

[0002]

2. Description of the Related Art Conventionally, in a magnetic tape device used for saving or restoring data handled by a host computer or the like, a user is notified only of information such as a used amount and a remaining amount of a magnetic tape.

For example, Japanese Utility Model Application Laid-Open No. 63-72791 (Japanese Utility Model Application No. 61-167003) discloses a used magnetic tape remaining reel width detection sensor, a magnetic tape remaining reel width calculation circuit, and a magnetic tape remaining length calculation. And a circuit for detecting the length of the remaining magnetic tape and displaying the same on a magnetic tape remaining length display.

Japanese Utility Model Application Laid-Open No. 59-33194 (Japanese Utility Model Application No. 57-1270067) discloses storing time unit information in an area other than a storage area of a magnetic tape and along the area. There has been proposed a magnetic tape device which reads out the information and displays the used amount and the remaining amount of the tape in time.

[0005]

However, the above-described conventional magnetic tape device can only display information such as the used amount and the remaining amount of the magnetic tape. There is a problem that the information on the used capacity, the remaining capacity, and the like must be obtained by the user of the magnetic tape device by himself / herself.

Accordingly, the present invention has been made in view of the above-mentioned problems, and the data transfer speed during input / output and the information other than the movement amount and the remaining amount of the magnetic tape are displayed on the display of the magnetic tape device. It is another object of the present invention to provide a magnetic tape device with an information display function, in which information such as the used capacity and the remaining capacity of a magnetic tape can be displayed, and operability and operability are greatly improved.

[0007]

In order to achieve the above-mentioned object, the present invention provides a display for displaying various kinds of information, and an input / output data each time data is input / output to / from a magnetic tape. A magnetic tape device control unit for outputting the amount, and an input / output data amount for monitoring the amount of input / output data for the magnetic tape in a predetermined time based on the amount of input / output data output from the magnetic tape device control unit A monitoring unit, a clock that generates an interrupt signal each time a predetermined time elapses,
A display information control unit that obtains the input / output data amount from the input / output data amount monitoring unit and calculates a data transfer speed during input / output each time a predetermined time elapses triggered by an interrupt from the clock; A display unit for displaying information notified from the display information control unit on the display, and a magnetic tape device having an information display function.

Further, the magnetic tape device with an information display function of the present invention further includes a magnetic tape movement amount monitoring unit for monitoring the movement amount of the magnetic tape, wherein the display information control unit is triggered by an interrupt from the clock. Each time a predetermined time elapses, the input / output data amount is acquired from the input / output data amount monitoring unit, and the movement amount of the magnetic tape is acquired from the magnetic tape movement amount monitoring unit. The transfer speed, the used capacity of the magnetic tape, and the remaining capacity are calculated.

Further, the magnetic tape device with an information display function of the present invention further includes a display information / display condition selection key for selecting information to be displayed on the display and conditions for displaying the information on the display. It is characterized by.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, according to an embodiment of the present invention, a magnetic tape device 2 includes a magnetic tape device control unit 21;
Display 22, display information / display condition selection key 23,
A display information control unit 24, an input / output data amount monitoring unit 25, a magnetic tape movement amount monitoring unit 26, a clock 27, and a display unit 28 are provided. The data transfer speed during input / output, the movement amount of the magnetic tape 4, the remaining amount, The used capacity and the remaining capacity are displayed on the display 22.

The user of the magnetic tape device 2 can display information and
The information to be displayed on the display 22 and the conditions for displaying the information on the display 22 are selected by the display condition selection key 23.

The display information control unit 24 receives a key input from the display information / display condition selection key 23, and if the key input is a request to display information on the display 22, the display information control unit 24 sends the information to the display display unit 28. For displaying the information, and the conditions for displaying the information (for example, information display time interval)
If the request is a setting request, the condition is stored in the display information control unit 24.

Each time data is input / output to / from the magnetic tape 4, the magnetic tape device control unit 21 notifies the input / output data amount monitoring unit 25 of the input / output data amount.

The input / output data amount monitoring unit 25 adds the input / output data amount notified from the magnetic tape device control unit 21 to the sum of the input / output data amounts up to the present time and stores the sum.

The magnetic tape movement monitor 26 monitors and stores the movement of the magnetic tape 4.

The clock 27 generates an interrupt signal each time a predetermined time elapses, and interrupts the display information control unit 24.

The display information control unit 24 interrupted by the clock 27 calculates the elapsed time from the time when the information display was previously requested to the display display unit 28, and uses the elapsed time to use the magnetic tape device 2. The information display time interval set by the user with the display information / display condition selection key 23 is compared.

As a result of comparison between the two, if the elapsed time and the information display time interval are equal, the display information control unit 24 acquires the input / output data amount from the input / output data amount monitoring unit 25 and monitors the magnetic tape movement amount. The moving amount of the magnetic tape 4 is obtained from the unit 26, the data transfer speed during input / output, the remaining amount of the magnetic tape 4, the used capacity and the remaining capacity are calculated, and the information on the display 22 is displayed. Request to the unit 28.

The display display unit 28 requested to display information from the display information control unit 24 displays the input / output data amount and the movement amount of the magnetic tape 4 as well as the data being input / output calculated by the display information control unit 24. Information on the transfer speed, the remaining amount of the magnetic tape 4, the used capacity and the remaining capacity is displayed on the display 22.

Thus, the user of the magnetic tape device 2 looks at the display 22 and can calculate the data transfer speed during input / output, the remaining amount of the magnetic tape 4, the used capacity, and the remaining capacity without having to calculate by himself. Information can be obtained immediately.

[0022]

Next, in order to more specifically describe the above-described embodiment of the present invention, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. Referring to FIG. 1, in the present embodiment, a magnetic tape device 2 and a host computer (not shown) are connected to each other via an input / output bus 1, and the magnetic tape device 2 transmits data handled by the host computer. Save or restore is performed.

The magnetic tape device 2 includes a magnetic tape device control unit 21, a display 22, a display information / display condition selection key 23, a display information control unit 24, and an input / output data amount monitoring unit 2.
5, a magnetic tape movement amount monitoring unit 26, a clock 27, and a display unit 28 are provided.

The magnetic tape device controller 21 reads data from the magnetic tape 4 via the recording head 3 and outputs the read data to the input / output bus 1. Further, data is input from the input / output bus 1, and the input data is written to the magnetic tape 4 via the recording head 3. Each time data is read from the magnetic tape 4 or each time data is written to the magnetic tape 4, the amount of input / output data read / written is monitored by the input / output data amount monitoring unit 2.
Notify 5

The user of the magnetic tape device 2 displays the display information
The information to be displayed on the display 22 and the conditions for displaying the information on the display 22 can be selected by the display condition selection key 23. The display information / display condition selection key 23 receives information to be displayed on the display 22 and conditions for displaying the information on the display 22 in response to a key input from a user of the magnetic tape device 2, and transmits the received information to the display information control unit. Notify 24.

The display information control unit 24 receives information and conditions selected by the user of the magnetic tape device 2 by key input of the display information / display condition selection key 23, and the selection of the user is transmitted to the display 22 on the display 22. If the request is a display request, the display requesting unit 28 requests the display unit 28 to display information. If the user's selection is a request to set a condition for displaying information on the display 22, the condition is displayed. It is stored inside the control unit 24.

The display information control unit 24 is interrupted by the clock 27 every time a predetermined time elapses. The display information control unit 24 interrupted by the clock 27 calculates the elapsed time from the time when the display display unit 28 has previously requested the display of the information, and calculates the elapsed time by the user of the magnetic tape device 2. Is compared with the information display time interval set by the display information / display condition selection key 23. As a result of comparing the two, if the elapsed time and the information display time interval are equal, the display information control unit 24 acquires the input / output data amount from the input / output data amount monitoring unit 25,
The movement amount of the magnetic tape 4 is acquired from the magnetic tape movement amount monitoring unit 26, the data transfer speed during input / output, the remaining amount of the magnetic tape 4, the used capacity and the remaining capacity are calculated, and the information is displayed on the display 22. Is requested from the display unit 28.

The input / output data amount monitoring unit 25 receives the input / output data amount read from or written to the magnetic tape 4 from the magnetic tape device control unit 21 and sends it to the display information control unit 24. On the other hand, it is added to the total sum of the input / output data amount from the time when it was notified before and stored. Further, when receiving the input / output data amount acquisition request from the display information control unit 24, the input / output data amount monitoring unit 25 displays the stored input / output data amount on the display information control unit 24.
Notify.

The magnetic tape movement monitor 26 monitors and stores the movement of the magnetic tape 4. Further, upon receiving the acquisition request for the movement amount of the magnetic tape 4 from the display information control unit 24, the magnetic tape movement amount monitoring unit 26 notifies the display information control unit 24 of the stored movement amount of the magnetic tape 4.

The clock 27 generates an interrupt signal every time a predetermined time elapses, and interrupts the display information control unit 24.

Upon receiving a request to display information on the display 22 from the display information control unit 24, the display display unit 28 calculates the amount of input / output data and the amount of movement of the magnetic tape 4 and calculates the amount of movement by the display information control unit 24. Information such as the data transfer speed during input / output, the remaining amount of the magnetic tape 4, the used capacity, and the remaining capacity is displayed on the display 22.

Next, the operation of each component in this embodiment will be described in more detail.

FIG. 2 is a flowchart for explaining the operation of the display information / display condition selection key 23 of the magnetic tape device 2 shown in FIG. The user of the magnetic tape device 2 can select information to be displayed on the display 22 and conditions for displaying the information on the display 22 by using the display information / display condition selection key 23.

Referring to FIGS. 1 and 2, the display information / display condition selection key 23 constantly monitors a key input from a user of the magnetic tape device 2 (step 2301).
If a key input has been made, the display information control unit 24 is notified of information to be displayed on the display 22 and key input information on conditions for displaying information on the display 22 (step 2302).

FIG. 3 is a flow chart for explaining the operation of the magnetic tape device control section 21 of the magnetic tape device 2 shown in FIG. Referring to FIGS. 1 and 3, the magnetic tape device control unit 21 reads data from the magnetic tape 4 via the magnetic head 3, outputs the read data to the input / output bus 1, and outputs data from the input / output bus 1. And writes the input data on the magnetic tape 4 via the magnetic head 3 (step 2101). Each time these read / write operations are completed (Step 2)
102), the input / output data amount read / written is notified to the input / output data amount monitoring unit 25 (step 21).
03).

FIG. 4 is a flowchart for explaining the operation of the input / output data amount monitoring unit 25 of the magnetic tape device 2 shown in FIG. Referring to FIGS. 1 and 4, when the input / output data amount monitoring unit 25 receives the notification of the input / output data amount from the magnetic tape device control unit 21 (step 2501), it receives the information of the input / output data amount. Is added to the total sum of the input / output data amounts stored in the input / output data amount monitoring unit 25 until this notification is made (step 2502), and the updated total sum of the input / output data amounts is stored internally (step 2502). Step 2503).

On the other hand, when an input / output data amount acquisition request is received from the display information control unit 24 (step 2504), the total of the stored input / output data amounts is notified to the display information control unit 24. (Step 2505). After the notification of the total amount of input / output data, the stored total amount of input / output data is reset to "0" (step 2506).

FIG. 5 is a flowchart for explaining the operation of the magnetic tape movement monitor 26 of the magnetic tape device 2 shown in FIG. Referring to FIGS. 1 and 5, the magnetic tape movement monitor 26 constantly monitors the movement of the magnetic tape 4, and when detecting that the magnetic tape 4 has started moving (step 2602), The measurement of the movement amount of the tape 4 is started (step 2603). afterwards,
When it is detected that the magnetic tape 4 has stopped moving (step 2604), the measurement of the movement amount of the magnetic tape 4 is stopped (step 2605), and the measurement of the magnetic tape 4 from the start of the measurement to the stop is stopped. The movement amount of the magnetic tape 4 stored in the magnetic tape movement amount monitoring unit
Is added to the total amount of movement of the magnetic tape 4 (step 2606), and the updated total amount of movement of the magnetic tape 4 is stored therein (step 2607).

On the other hand, when the display information control unit 24 requests acquisition of the movement amount of the magnetic tape 4 (step 2601), the movement amount monitoring unit 26 of the magnetic tape 4 Is notified to the display information control unit 24 (step 2608).

FIG. 6 is a flowchart for explaining the operation of the clock 27 of the magnetic tape device 2 shown in FIG. Referring to FIGS. 1 and 6, the clock 27 generates an interrupt signal every time a predetermined time elapses, and interrupts the display information control unit 24 (step 2701).

FIG. 7 is a flowchart for explaining the operation of the display information control unit 24 of the magnetic tape device 2 shown in FIG. With reference to FIGS. 1 and 7, the display information control unit 24 controls the information displayed on the display 22 selected by the user of the magnetic tape device 2 by the key input of the display information / display condition selection key 23, When a notification of a condition for displaying information is received (step 2401), the information and the condition are processed (step 2406). For example, when the user's selection is a request to display the remaining amount, used capacity, remaining capacity, and the like of the magnetic tape 4 on the display 22, the display information control unit 24 Is requested to be displayed on the display 22.
On the other hand, when the user selects the data transfer speed during data input / output to / from the magnetic tape device 2 or the movement amount, remaining amount, used capacity, remaining capacity, etc. of the magnetic tape 4 on the display 22. If the request is for setting the information display time interval or the like, the requested information display time interval or the like is stored internally.

The display information control unit 24 is interrupted by the clock 27 every time a predetermined time elapses (step 2402). When the clock 27 is interrupted, the elapsed time from the time when the display display unit 28 was previously requested to display information is calculated,
The user of the magnetic tape device 2 indicates the elapsed time with the display information /
A comparison is made with the information display time interval set by the display condition selection key 23 (step 2403).

As a result of the comparison, if the elapsed time and the information display time interval are equal, the display information control unit 24 acquires the input / output data amount from the input / output data amount monitoring unit 25 (step 2407), and Tape movement monitor 2
6. The movement amount of the magnetic tape 4 is acquired from Step 6 (Step 24)
08). Then, the data transfer speed during input / output is calculated from the acquired input / output data amount and the elapsed time, and
The remaining amount of the magnetic tape 4 is calculated from the moving amount of the magnetic tape 4 and the total length of the magnetic tape 4, and the used capacity of the magnetic tape 4 is determined from the moving amount of the magnetic tape 4 and the recording density of the data recorded on the magnetic tape 4. The remaining capacity of the magnetic tape 4 is calculated from the amount of movement of the magnetic tape 4, the total length of the magnetic tape 4, and the recording density of the data recorded on the magnetic tape 4, and the information is stored internally ( Step 2409).

Thereafter, the input / output data amount, which is information obtained from the input / output data amount monitoring unit 25, and the movement amount of the magnetic tape 4, which is information obtained from the magnetic tape movement amount monitoring unit 26, are obtained by calculation. A request is made to the display unit 28 to display on the display 22 the information, the data transfer speed during input / output, the remaining amount of the magnetic tape 4, the used capacity and the remaining capacity (step 2410). In addition,
After the request to the display unit 28 is completed, the elapsed time managed by the display information control unit 24 is reset to "0" (step 2411).

If the elapsed time is not equal to the information display time interval in step 203, the elapsed time is updated (step 2404), and the updated elapsed time is stored (step 2405). .

FIG. 8 is a flow chart for explaining the operation of the display unit 28 of the magnetic tape device 2 shown in FIG. Referring to FIGS. 1 and 8, when the display information control unit 24 requests display of information on the display 22 (step 2801), the display information unit 24 displays information to be displayed from the display information control unit 24. Upon receipt, the information is displayed on the display 22 (step 2802).

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, but includes various embodiments according to the principle of the present invention.

[0049]

As described above, according to the present invention,
On the display of the magnetic tape device, not only information such as the movement amount and remaining amount of the magnetic tape, but also the data transfer speed during input and output, the used capacity of the magnetic tape, the remaining capacity, etc. can be displayed. Operability and operability can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of a display information / display condition selection key (23) in one embodiment of the present invention.

FIG. 3 is a flowchart for explaining an operation of a magnetic tape device control unit (21) in one embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of an input / output data amount monitoring unit (25) according to an embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation of a magnetic tape movement amount monitoring unit (26) according to an embodiment of the present invention.

FIG. 6 is a flowchart for explaining an operation of a clock (27) in one embodiment of the present invention.

FIG. 7 illustrates a display information control unit (2) according to an embodiment of the present invention.
It is a flowchart for demonstrating operation | movement of 4).

FIG. 8 is a flowchart for explaining the operation of the display unit (28) in one embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 input / output bus 2 magnetic tape device 21 magnetic tape device control unit 22 display 23 display information / display condition selection key 24 display information control unit 25 input / output data amount monitoring unit 26 magnetic tape movement amount monitoring unit 27 clock 28 display display unit 3 Recording head 4 Magnetic tape

Claims (3)

(57) [Claims] A display for displaying various kinds of information; a magnetic tape device controller for outputting the input / output data amount each time data is input / output to / from the magnetic tape; An input / output data amount monitoring unit that monitors an input / output data amount of the magnetic tape in a predetermined time based on the input / output data amount output from the unit, and generates an interrupt signal each time a predetermined time elapses A clock, and a display information control unit that obtains the input / output data amount from the input / output data amount monitoring unit and calculates a data transfer speed during input / output each time a predetermined time elapses in response to an interrupt from the clock. And a display display unit for displaying information notified from the display information control unit on the display, and a magnetic tape device with an information display function. 2. The apparatus according to claim 2, further comprising: a magnetic tape moving amount monitoring unit that monitors a moving amount of the magnetic tape, wherein the display information control unit sets the input / output unit every time a predetermined time elapses in response to an interrupt from the clock. While acquiring the input / output data amount from the data amount monitoring unit, acquiring the movement amount of the magnetic tape from the magnetic tape movement amount monitoring unit, the data transfer speed during input / output, the used capacity of the magnetic tape, and the remaining capacity are obtained. 2. The method according to claim 1, wherein the calculation is performed.
Magnetic tape device with information display function described. 3. The information according to claim 1, further comprising a display information / display condition selection key for selecting information to be displayed on the display and conditions for displaying the information on the display. Magnetic tape unit with display function.