JPS57135412A - Magnetic tape controller - Google Patents

Magnetic tape controller

Info

Publication number
JPS57135412A
JPS57135412A JP1993481A JP1993481A JPS57135412A JP S57135412 A JPS57135412 A JP S57135412A JP 1993481 A JP1993481 A JP 1993481A JP 1993481 A JP1993481 A JP 1993481A JP S57135412 A JPS57135412 A JP S57135412A
Authority
JP
Japan
Prior art keywords
data
time
tape
dummy data
exceeded
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
JP1993481A
Other languages
Japanese (ja)
Inventor
Masayuki Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1993481A priority Critical patent/JPS57135412A/en
Publication of JPS57135412A publication Critical patent/JPS57135412A/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1803—Error detection or correction; Testing, e.g. of drop-outs by redundancy in data representation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To prevent a drop of working efficiency of a tape, by inserting dummy data when interruption of data has been generated under the control of a streaming mode, and also making the tape prepare for restarting to transfer the tape by a specific means. CONSTITUTION:A monitoring circuit 703 is provided with 2 kinds of internal timers, and is constituted so that a command pulse CMD is outputted onto a signal line 710 at the time when a data interrupted time has exceeded a prescribed time T', measuring from a time point T for a constant interval of time, and an output of a data transfer interrupting signal on a signal line 304 is stopped. From the time when the interrupting time has exceeded T till T', a dummy data inserting circuit 305 adds a discriminating code C' to a data, outputs dummy data, also a command pulse is transferred to MT, a rewinding operation is started, and reposition sequence of B C' D' A' is executed. When the tape reaches a position A', regulat data is stored, and the dummy data is erased automatically.
JP1993481A 1981-02-13 1981-02-13 Magnetic tape controller Pending JPS57135412A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1993481A JPS57135412A (en) 1981-02-13 1981-02-13 Magnetic tape controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1993481A JPS57135412A (en) 1981-02-13 1981-02-13 Magnetic tape controller

Publications (1)

Publication Number Publication Date
JPS57135412A true JPS57135412A (en) 1982-08-21

Family

ID=12013036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1993481A Pending JPS57135412A (en) 1981-02-13 1981-02-13 Magnetic tape controller

Country Status (1)

Country Link
JP (1) JPS57135412A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155465A (en) * 1982-02-25 1983-09-16 Yokogawa Hewlett Packard Ltd Controlling system of data transfer of magnetic tape device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155465A (en) * 1982-02-25 1983-09-16 Yokogawa Hewlett Packard Ltd Controlling system of data transfer of magnetic tape device

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