JPS5240113A - Magnetic head discriminating method - Google Patents

Magnetic head discriminating method

Info

Publication number
JPS5240113A
JPS5240113A JP11468675A JP11468675A JPS5240113A JP S5240113 A JPS5240113 A JP S5240113A JP 11468675 A JP11468675 A JP 11468675A JP 11468675 A JP11468675 A JP 11468675A JP S5240113 A JPS5240113 A JP S5240113A
Authority
JP
Japan
Prior art keywords
magnetic head
discriminating method
head discriminating
head performance
data
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
JP11468675A
Other languages
Japanese (ja)
Inventor
Hiroji Kawakami
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11468675A priority Critical patent/JPS5240113A/en
Publication of JPS5240113A publication Critical patent/JPS5240113A/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
    • G11B20/1816—Testing
    • G11B20/182—Testing using test patterns
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:In a digital magnetic recorder, a group of data to discriminate magnetic head performance is provided at the top section of recording region of random signal group to reduce errors when reproducing data by discriminating magnetic head performance.
JP11468675A 1975-09-25 1975-09-25 Magnetic head discriminating method Pending JPS5240113A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11468675A JPS5240113A (en) 1975-09-25 1975-09-25 Magnetic head discriminating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11468675A JPS5240113A (en) 1975-09-25 1975-09-25 Magnetic head discriminating method

Publications (1)

Publication Number Publication Date
JPS5240113A true JPS5240113A (en) 1977-03-28

Family

ID=14644092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11468675A Pending JPS5240113A (en) 1975-09-25 1975-09-25 Magnetic head discriminating method

Country Status (1)

Country Link
JP (1) JPS5240113A (en)

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