KR900700999A - Magnetic recording media and its authenticity determination method - Google Patents

Magnetic recording media and its authenticity determination method

Info

Publication number
KR900700999A
KR900700999A KR1019880701682A KR880701682A KR900700999A KR 900700999 A KR900700999 A KR 900700999A KR 1019880701682 A KR1019880701682 A KR 1019880701682A KR 880701682 A KR880701682 A KR 880701682A KR 900700999 A KR900700999 A KR 900700999A
Authority
KR
South Korea
Prior art keywords
magnetic
recording medium
authenticity determination
magnetic recording
determination method
Prior art date
Application number
KR1019880701682A
Other languages
Korean (ko)
Other versions
KR910006578B1 (en
Inventor
요시히코 나까하라
Original Assignee
후꾸오까 고로
교오도인사쯔 가부시기가이샤
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 후꾸오까 고로, 교오도인사쯔 가부시기가이샤 filed Critical 후꾸오까 고로
Priority claimed from PCT/JP1988/000369 external-priority patent/WO1989009981A1/en
Publication of KR900700999A publication Critical patent/KR900700999A/en
Application granted granted Critical
Publication of KR910006578B1 publication Critical patent/KR910006578B1/en

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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/80—Card carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Paints Or Removers (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

내용 없음No content

Description

자기기록매체 및 그 진위(眞僞)의 판정방법Magnetic recording media and its authenticity determination method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 의한 자기기록 매체의 제1실시예의 모식적평면도1 is a schematic plan view of a first embodiment of a magnetic recording medium according to the present invention.

제2도는 본 발명에 의한 자기기록 매체의 제2실시예의 모식적평면도2 is a schematic plan view of a second embodiment of a magnetic recording medium according to the present invention.

제3도는 본 발명에 의한 자기기록 매체의 제3실시예의 모식적평면도3 is a schematic plan view of a third embodiment of a magnetic recording medium according to the present invention.

Claims (4)

기록 매체의 적어도 한 에지부의 자기극성이 상기 기록매체의 진위판정용 부호를 표시하는 것을 특징으로 하는 자기기록매체.And magnetic polarity of at least one edge portion of the recording medium indicates the authenticity determination code of the recording medium. 제1항에 있어서, 상기 진위판정용 부호는 상기 기록매체에 기록되어있는 소망의 기록 내용에 따라 결정되는 것을 특징으로 하는 자기기록매체.The magnetic recording medium of claim 1, wherein the authenticity judgment code is determined according to desired recording contents recorded on the recording medium. 상기 자기기록매체에 있어서의 에지부의 자기극성을 검출하고 그 극성의 조합을 상기 자기극성의 정당한 조합과 대조해서 상기 자기매체의 진위를 판정하는 것을 특징으로 하는 진위판정방법.And authenticity of the magnetic medium is determined by comparing the magnetic polarity of the edge portion of the magnetic recording medium and comparing the combination of the polarities with a valid combination of the magnetic polarities. 제3항에 있어서, 자기극성의 정당한 조합은 상기 자기기록매체에 기록되어있는 소망의 기록내용에 따라서 결정되는 것을 특징으로하는 진위판정방법.4. The authenticity determination method according to claim 3, wherein the proper combination of magnetic polarity is determined according to the desired recording contents recorded on the magnetic recording medium. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880701682A 1988-04-14 1988-04-14 Magnetic recording medium and truth determination method therefor KR910006578B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1988/000369 WO1989009981A1 (en) 1988-04-14 1988-04-14 Magnetic recording medium and truth determination method therefor

Publications (2)

Publication Number Publication Date
KR900700999A true KR900700999A (en) 1990-08-17
KR910006578B1 KR910006578B1 (en) 1991-08-28

Family

ID=13930597

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880701682A KR910006578B1 (en) 1988-04-14 1988-04-14 Magnetic recording medium and truth determination method therefor

Country Status (1)

Country Link
KR (1) KR910006578B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100780148B1 (en) * 2002-09-26 2007-11-27 세이코 엡슨 가부시키가이샤 Drive mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100780148B1 (en) * 2002-09-26 2007-11-27 세이코 엡슨 가부시키가이샤 Drive mechanism

Also Published As

Publication number Publication date
KR910006578B1 (en) 1991-08-28

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