JPS55108914A - Magnetic tape device control system - Google Patents

Magnetic tape device control system

Info

Publication number
JPS55108914A
JPS55108914A JP1561679A JP1561679A JPS55108914A JP S55108914 A JPS55108914 A JP S55108914A JP 1561679 A JP1561679 A JP 1561679A JP 1561679 A JP1561679 A JP 1561679A JP S55108914 A JPS55108914 A JP S55108914A
Authority
JP
Japan
Prior art keywords
magnetic tape
medium
counter
data
read
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
JP1561679A
Other languages
Japanese (ja)
Inventor
Yoshio Shichijo
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 JP1561679A priority Critical patent/JPS55108914A/en
Publication of JPS55108914A publication Critical patent/JPS55108914A/en
Pending legal-status Critical Current

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  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE: To use a magnetic tape medium while skipping medium defective positions on the magnetic tape medium by providing a medium defective position detection means for the magnetic tape and a means which stores medium defective positions of the tape every volume of the magnetic tape.
CONSTITUTION: Though data is stored in data storage unit 5 for normal data, read errors are reported to medium defect recording circuit 9 if they are detected. Meanwhile, tachometer pulses from tachometer 6 are detected by sensor 7 and are sent to counter 8. In respect to medium defective positions, values of the counter are recorded onto recording ledger 10. When data is read by read circuit 3, skip control circuit 11 is started if the value of counter 8 agrees with the value of recording ledger 10. By this constitution, the magnetic tape can be used without abandonment even for a partial magnetic tape medium defect while skipping medium defective positions on the magnetic tape medium in a magnetic tape use time.
COPYRIGHT: (C)1980,JPO&Japio
JP1561679A 1979-02-13 1979-02-13 Magnetic tape device control system Pending JPS55108914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1561679A JPS55108914A (en) 1979-02-13 1979-02-13 Magnetic tape device control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1561679A JPS55108914A (en) 1979-02-13 1979-02-13 Magnetic tape device control system

Publications (1)

Publication Number Publication Date
JPS55108914A true JPS55108914A (en) 1980-08-21

Family

ID=11893634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1561679A Pending JPS55108914A (en) 1979-02-13 1979-02-13 Magnetic tape device control system

Country Status (1)

Country Link
JP (1) JPS55108914A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61115273A (en) * 1984-11-10 1986-06-02 Hitachi Ltd Data recording system
JPS61255568A (en) * 1985-05-09 1986-11-13 Nec Corp Microprogram processor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52143808A (en) * 1976-05-26 1977-11-30 Hitachi Ltd Data recording system
JPS5350814A (en) * 1976-10-20 1978-05-09 Mitsubishi Electric Corp Write correction system of magnetic tape

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52143808A (en) * 1976-05-26 1977-11-30 Hitachi Ltd Data recording system
JPS5350814A (en) * 1976-10-20 1978-05-09 Mitsubishi Electric Corp Write correction system of magnetic tape

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61115273A (en) * 1984-11-10 1986-06-02 Hitachi Ltd Data recording system
JPS61255568A (en) * 1985-05-09 1986-11-13 Nec Corp Microprogram processor

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