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JPS57200917A - Magnetic tape storage device - Google Patents

Magnetic tape storage device

Info

Publication number
JPS57200917A
JPS57200917A JP8481981A JP8481981A JPS57200917A JP S57200917 A JPS57200917 A JP S57200917A JP 8481981 A JP8481981 A JP 8481981A JP 8481981 A JP8481981 A JP 8481981A JP S57200917 A JPS57200917 A JP S57200917A
Authority
JP
Japan
Prior art keywords
data
flag
circuit
reading
data block
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
JP8481981A
Other languages
Japanese (ja)
Inventor
Takao Suzuki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8481981A priority Critical patent/JPS57200917A/en
Publication of JPS57200917A publication Critical patent/JPS57200917A/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

Landscapes

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

Abstract

PURPOSE:To improve the efficiency of writing and reading operation for data by a flag showing an error to a data block having the error during data writing, and then making it ineffective during data reading. CONSTITUTION:A read data signal read by a reading head 4 is passed through a reading circuit 7, and separated into a flag part and a data part by a flag/ data separating circuit 12. This flag part is sent to a control circuit 8, and the data part is stored in a read data storage curcuit 13. At this time, the control circuit 8 uses the flag of a next data block following the data block stored in the storage circuit 13 to judge whether the data block is effective or ineffective, and transfers only effective data blocks to a host device by opening an AND circuit 14 by a control signal (K).
JP8481981A 1981-06-01 1981-06-01 Magnetic tape storage device Pending JPS57200917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8481981A JPS57200917A (en) 1981-06-01 1981-06-01 Magnetic tape storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8481981A JPS57200917A (en) 1981-06-01 1981-06-01 Magnetic tape storage device

Publications (1)

Publication Number Publication Date
JPS57200917A true JPS57200917A (en) 1982-12-09

Family

ID=13841349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8481981A Pending JPS57200917A (en) 1981-06-01 1981-06-01 Magnetic tape storage device

Country Status (1)

Country Link
JP (1) JPS57200917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862297A (en) * 1987-02-06 1989-08-29 Sony Corporation Apparatus for reproducing a digital signal without employing tracking signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4882812A (en) * 1972-02-04 1973-11-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4882812A (en) * 1972-02-04 1973-11-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862297A (en) * 1987-02-06 1989-08-29 Sony Corporation Apparatus for reproducing a digital signal without employing tracking signals

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