JPS56137565A - Managing system of magnetic tape - Google Patents
Managing system of magnetic tapeInfo
- Publication number
- JPS56137565A JPS56137565A JP4162080A JP4162080A JPS56137565A JP S56137565 A JPS56137565 A JP S56137565A JP 4162080 A JP4162080 A JP 4162080A JP 4162080 A JP4162080 A JP 4162080A JP S56137565 A JPS56137565 A JP S56137565A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- magnetic tape
- write
- residual amount
- counter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
PURPOSE:To make suitable management of a magnetic tape, by identifying the residual amount of the tape, by reading recording length of the magnetic tape, to set an initial value, and calculating the residual amount of the tape by subtracting the tape length having executed write-in operation. CONSTITUTION:The recording length read-in data of magnetic tape is set to the register 9 of magnetic tape controller MTC, and the initial value is set to the residual counter 10. According to the write-in instruction, the capstan motor 2 of the mechanism section M of the magnetic tape MTU is turned via the transmission/ reception circuits 7, 6, for write-in of information. At the same time, the number of revolutions of capstan by the tape drive circuit 5 of the device MTU is fed to the device MTC via the circuits 6, 7, it is converted to the tape length at the conversion circuit 8, the initial value of the counter 10 is subtracted and the tape residual amount is calculated in the counter 10. Thus, the tape residual amount is identified and the control of write-in is made based on it, allowing to suitably manage the magnetic tape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4162080A JPS56137565A (en) | 1980-03-31 | 1980-03-31 | Managing system of magnetic tape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4162080A JPS56137565A (en) | 1980-03-31 | 1980-03-31 | Managing system of magnetic tape |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56137565A true JPS56137565A (en) | 1981-10-27 |
Family
ID=12613375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4162080A Pending JPS56137565A (en) | 1980-03-31 | 1980-03-31 | Managing system of magnetic tape |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56137565A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013196363A (en) * | 2012-03-19 | 2013-09-30 | Fujitsu Ltd | Tape unit and control method of tape unit |
-
1980
- 1980-03-31 JP JP4162080A patent/JPS56137565A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013196363A (en) * | 2012-03-19 | 2013-09-30 | Fujitsu Ltd | Tape unit and control method of tape unit |
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