JPS56137565A - Managing system of magnetic tape - Google Patents

Managing system of magnetic tape

Info

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
Application number
JP4162080A
Other languages
Japanese (ja)
Inventor
Toshiaki Saito
Tsukasa Sasaki
Takashi Tabu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4162080A priority Critical patent/JPS56137565A/en
Publication of JPS56137565A publication Critical patent/JPS56137565A/en
Pending legal-status Critical Current

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.
JP4162080A 1980-03-31 1980-03-31 Managing system of magnetic tape Pending JPS56137565A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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