KR930016916A - How to record and read information - Google Patents

How to record and read information Download PDF

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Publication number
KR930016916A
KR930016916A KR1019930000251A KR930000251A KR930016916A KR 930016916 A KR930016916 A KR 930016916A KR 1019930000251 A KR1019930000251 A KR 1019930000251A KR 930000251 A KR930000251 A KR 930000251A KR 930016916 A KR930016916 A KR 930016916A
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KR
South Korea
Prior art keywords
information
metal deposition
deposition layer
sensor head
information unit
Prior art date
Application number
KR1019930000251A
Other languages
Korean (ko)
Other versions
KR970006488B1 (en
Inventor
타쯔야 오가와
Original Assignee
후꾸오가 고로
쿄도인사쯔 가부시기가이샤
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Publication date
Application filed by 후꾸오가 고로, 쿄도인사쯔 가부시기가이샤 filed Critical 후꾸오가 고로
Publication of KR930016916A publication Critical patent/KR930016916A/en
Application granted granted Critical
Publication of KR970006488B1 publication Critical patent/KR970006488B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/22—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for use in combination with accessories specially adapted for information-bearing cards
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G06K7/085—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive metal detectors

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  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

본 발명은 금속증착층을 가진 카드에, 이 금속증착층을 소정의 패턴에 따라서 부분적으로 제거하므로서 형성된 팬턴화정보를 판독하는 방법이며, 금속증착층이 존재하는 부분과 제거부분과의 사이의 와전류의 차를 검출하는 센서헤드의 스캔에 의해, 직렬적인 와전류전류신호로서 검출한다. 이에 의해, 정보판독은 비접촉으로 확실하게 행할 수 있고, 또 불가시의 층에 의해서 은폐하였을 경우에도 판독가능하고, 비밀수호 및 위조방지등의 면에서 극히 높은 안전성을 얻을 수 있다.The present invention is a method of reading the phantomization information formed by partially removing the metal deposition layer in accordance with a predetermined pattern on a card having a metal deposition layer, and an eddy current between the portion where the metal deposition layer is present and the removal portion. By the scan of the sensor head which detects the difference between the signals, it is detected as a series eddy current current signal. As a result, information reading can be reliably performed in a non-contact manner, and can be read even when concealed by an invisible layer, and extremely high safety can be obtained in terms of secret protection and forgery prevention.

Description

정보의 기록, 판독방법How to record and read information

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

제1도는 자기카드에 기록된 정보를 본 발명의 방법에 따라서 판독하는 상태를 표시한 도면, 제2도는 제1도에 표시한 카드의 일부의 단면도, 제3도는 제1도 및 제2도에 표시한 자기카드의 금속증착층에 형성된 패턴화정보 영역에 있어서의 게거부분과 출력전압과의 관계를 표시한 그래프.1 is a diagram showing a state in which information recorded on a magnetic card is read according to the method of the present invention, FIG. 2 is a sectional view of a part of the card shown in FIG. 1, and FIG. 3 is a view in FIG. 1 and FIG. A graph showing the relationship between a geger portion and an output voltage in a patterned information area formed on a metal deposition layer of a displayed magnetic card.

Claims (4)

소정의 면적을 가지고, 금속증착층으로 이루어진 제1의 정보단위와, 이 제1의 정보단위와 동일한 면적을 가지나 금속증착층이 존재하지 않는 제2의 정보단위를, 기록해야할 정보에 대응한 위치에 따라서 배열한 패턴화 정보영역을 비도전성기체에 형성하는 것과, 상기 패턴화정보영역을 상기 금속증착층의 존재하는 부분과 존재하지 않는 부분과의 사이의 와전류의 차를 검출하는 센서헤드에 의해서 스캔하는 것과, 검출한 와전류의 하로부터 상기 금속증착층이 존재하지 않는 부분을 검출차므로써 정보를 판독하는 것을 특징으로 하는 정보의 기록, 판독방법.A position corresponding to information to be recorded with a first information unit having a predetermined area and comprising a metal deposition layer, and a second information unit having the same area as the first information unit but without a metal deposition layer; By forming a patterned information region arranged in accordance with the non-conductive gas, and detecting the difference in eddy current between the portion of the metal deposition layer and the portion of the metal deposition layer. And information is read by scanning and detecting a portion where the metal deposition layer does not exist from the detected eddy current. 제1항에 있어서, 상기 패턴화 정보영역의 정보단위가, 상기 센서헤드의 검출면과 대략 동등한 면적을 가진것 을 특징으로 하는 정보의 기록, 판독방법.The information recording and reading method according to claim 1, wherein the information unit of the patterned information area has an area substantially equal to the detection surface of the sensor head. 제1항에 있어서, 상기 패턴화정보영역의 정보단위가, 상기 센서헤드의 스캔방향에 관해서, 상기 센서헤드의 검출면의 길이의 대략 1/2인것을 특징으로 하는 정보의 기록, 판독방법.The information recording and reading method according to claim 1, wherein the information unit of the patterned information area is approximately 1/2 of the length of the detection face of the sensor head with respect to the scanning direction of the sensor head. 제3항에 있어서, 상기 센서헤드가 상기 정보단위를 통과할때마다 얻게되는 출력신호의 출력레벨이, 제1의 임계레벨이하의 일정치로 안정되어 있을때, 및 레벨이 그 이전의 레벨의 변화에 대해서 감소하였을 때에 제1의 디지탈치를 얻고, 또 상승하고 있을때, 및 상기 제1의 임계레벨보다도 높은 제2의 임계레벨을 초과하는 일정치로 안정되어 있을때에 제2의 디지탈치를 얻는 것을 특징으로 하는 정보의 기록, 판독방법.4. The method according to claim 3, wherein the output level of the output signal obtained each time the sensor head passes through the information unit is stable at a constant value less than or equal to the first threshold level, and the level is changed from the previous level. The second digital value is obtained when the first digital value decreases when the value decreases with respect to the second digital value, and when the voltage is stable, and when it is stable at a constant value exceeding the second threshold level higher than the first threshold level. How to record and read information. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930000251A 1992-01-13 1993-01-11 Method for recording and reading information KR970006488B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2158192 1992-01-13
JP92-21581 1992-01-13
JP92-21581.0 1992-01-13
JP28705792A JP3264288B2 (en) 1992-01-13 1992-10-02 How to record and read information
JP92-287057 1992-10-02

Publications (2)

Publication Number Publication Date
KR930016916A true KR930016916A (en) 1993-08-30
KR970006488B1 KR970006488B1 (en) 1997-04-28

Family

ID=26358667

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930000251A KR970006488B1 (en) 1992-01-13 1993-01-11 Method for recording and reading information

Country Status (5)

Country Link
JP (1) JP3264288B2 (en)
KR (1) KR970006488B1 (en)
AU (1) AU658254B2 (en)
GB (1) GB2263808B (en)
TW (1) TW222700B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6259575B1 (en) 1998-07-01 2001-07-10 Iomega Corporation Readable indelible mark on storage media
US6324026B1 (en) * 1998-07-01 2001-11-27 Iomega Corporation Readable indelible mark on storage media
WO2008011108A2 (en) * 2006-07-18 2008-01-24 Jds Uniphase Corporation Holographic magnetic stripe demetalization security
JP2014172309A (en) * 2013-03-11 2014-09-22 Toppan Printing Co Ltd Identification medium and identification method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0262287A (en) * 1988-08-30 1990-03-02 Kyodo Printing Co Ltd Thermal recording method, thermal recording medium used therefor and preparation thereof
JP2728214B2 (en) * 1989-01-20 1998-03-18 共同印刷株式会社 Thermal recording medium

Also Published As

Publication number Publication date
AU3114293A (en) 1993-07-15
GB9300186D0 (en) 1993-03-03
AU658254B2 (en) 1995-04-06
JPH05294095A (en) 1993-11-09
TW222700B (en) 1994-04-21
JP3264288B2 (en) 2002-03-11
GB2263808B (en) 1995-11-29
KR970006488B1 (en) 1997-04-28
GB2263808A (en) 1993-08-04

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