JPS638861A - Magnetic card identifying system - Google Patents

Magnetic card identifying system

Info

Publication number
JPS638861A
JPS638861A JP61151047A JP15104786A JPS638861A JP S638861 A JPS638861 A JP S638861A JP 61151047 A JP61151047 A JP 61151047A JP 15104786 A JP15104786 A JP 15104786A JP S638861 A JPS638861 A JP S638861A
Authority
JP
Japan
Prior art keywords
data
magnetic card
identifying
card
area
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.)
Granted
Application number
JP61151047A
Other languages
Japanese (ja)
Other versions
JPH0568756B2 (en
Inventor
Kiyohiro Ishizumi
石積 清博
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.)
Anritsu Corp
Original Assignee
Anritsu Corp
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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP61151047A priority Critical patent/JPS638861A/en
Publication of JPS638861A publication Critical patent/JPS638861A/en
Publication of JPH0568756B2 publication Critical patent/JPH0568756B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

PURPOSE:To prevent the malfunction of an equipment due to the illegal use of a forged card and the error of data by writing the identification code prepared by A/D converting the prescribed sample value of the reproducing signal of data into a magnetic card beforehand. CONSTITUTION:At the magnetic recording band 1 of a magnetic card C, an inherent area 2a and an identifying area 2b are provided, and to an inherent area 2a, the inherent data such as a transaction No. or amount information are magnetically recorded and to an identifying area 2b, the identifying code is magnetically recorded beforehand. When respective peak values a1, a2... of the inherent data are successively sampled and A/D converted, identifying codes b1, b2... corresponding to respective peak values are obtained and the identifying codes are recorded into the identifying area 2b. Respective peak values of the reproducing signal of the inherent data are successively converted to the detecting code coded by an A-D converter, compared with the reproduced identifying code and the justification of the magnetic card is identified by a card reader.

Description

【発明の詳細な説明】 く本発明の産業上の利用分野〉 本発明は、各種データが記録された磁気カードを用いる
装置に係り、特に書込みデータに誤りのある磁気カード
あるいは偽造された磁気カード等の不正利用を防止する
ための磁気カード識別方式%式% 近年、買物の支払いや銀行等での現金の出入れ、特定場
所への人出管理、あるいは、公衆電話機等の各種機器の
利用に磁気カードが多く利用されている。
[Detailed Description of the Invention] Industrial Application Field of the Present Invention The present invention relates to a device using a magnetic card on which various data are recorded, and particularly to a magnetic card with an error in written data or a forged magnetic card. Magnetic card identification method % type % to prevent unauthorized use of % etc. In recent years, it has been used to pay for shopping, withdraw cash at banks, etc., manage the number of people in specific places, and use various devices such as public telephones. Magnetic cards are widely used.

この種の磁気カードは、国有の取引コードや、登録階あ
るいは金額情報等の各情報が磁気記録されており、この
磁気カードに記録された情報は、各種端末器や利用機器
内のカード読取り装置によって再生され、処理される。
This type of magnetic card has various information magnetically recorded on it, such as the national transaction code, registration floor, and amount information. played and processed by.

く本発明が解決しようとする問題点〉 しかしながら、上記のような磁気カードの普及に伴って
、磁気カードに記録された情報がその装置以外の装置に
読取られ再書込みされる危険が高くなっている。
Problems to be Solved by the Present Invention> However, with the spread of magnetic cards as described above, there is a growing risk that information recorded on the magnetic card will be read and rewritten by a device other than that device. There is.

即ち、公衆電話機等の使い捨てカードは、使用済みの磁
気カードが未使用の磁気カードと同じ記録内容に再書込
みされたり、また、銀行等で利用されている繰り返し使
用されるカードにおいては、不要になったカード、ある
いは不正に取1りしたカードに所定の情報が書き込まれ
て、不正使用される恐れがある。
In other words, disposable cards such as those used in public telephones, etc., can be rewritten with the same recording content as unused magnetic cards, and cards that are used repeatedly at banks, etc., can become unnecessary. There is a risk that predetermined information may be written on a stolen card or a card that has been fraudulently taken and used fraudulently.

また、なんらかの理由により記録されたデータに誤りを
生じている磁気カードにより、機器の誤動作を招く恐れ
があった。
Furthermore, there is a risk that a magnetic card that has recorded data with errors for some reason may cause the equipment to malfunction.

く本発明の目的〉 本発明は、上記事情に鑑みてなされたもので、偽造され
た磁気カードの不正使用や、データに誤りのある磁気カ
ードによる誤動作を防止するために、磁気カードの正当
性を識別する磁気カード識別方式を提供することを目的
としている。
Purpose of the Invention The present invention has been made in view of the above circumstances, and aims to improve the validity of magnetic cards in order to prevent unauthorized use of counterfeit magnetic cards and malfunctions caused by magnetic cards with incorrect data. The purpose is to provide a magnetic card identification method for identifying.

く本発明の一実施例〉(第1〜3図) 以下、図面に基づいて本発明の一実施例を説明する。An embodiment of the present invention (Figures 1 to 3) Hereinafter, one embodiment of the present invention will be described based on the drawings.

第1図は、本発明の方式に用いる磁気カードの一例を示
すもので、磁気カードCの磁気記録帯1には、個有領f
it!2aと識別領域2bとが設けられている。
FIG. 1 shows an example of a magnetic card used in the method of the present invention.
It! 2a and an identification area 2b are provided.

個有領域2aには、取引階あるいは金額情報等の個有デ
ータが、また識別領域2bには、カードの正当性を識別
するための識別コードが、予め所定のカード書込み装置
によって、磁気記録される。
In the unique area 2a, unique data such as transaction floor or amount information is magnetically recorded, and in the identification area 2b, an identification code for identifying the validity of the card is magnetically recorded in advance by a predetermined card writing device. Ru.

この識別コードは、個有データを所定の再生装置で再生
した再生信号に基づいて作成される。
This identification code is created based on a reproduction signal obtained by reproducing the unique data using a predetermined reproduction device.

即ら、個有領ta12aに記録された個有データを、磁
気ヘッドを介して再生増幅すると、第2図(a)に示す
ような再生波形が(りられる。この再生波形の各波高[
(at、az・・・・・・)は、個有データ記録時の記
録状態(例えば、カードの磁気材料のバラツキや書き込
みヘッドとの接触状態など)によって一定の値にならな
い。
That is, when the private data recorded in the private area ta 12a is reproduced and amplified via a magnetic head, a reproduced waveform as shown in FIG. 2(a) is obtained.
(at, az...) do not take a constant value depending on the recording condition at the time of recording the unique data (for example, variations in the magnetic material of the card, the contact condition with the write head, etc.).

この各波高1ia(at、az・・・・・・)を順次標
本化して、例えば、4ピツトのコード化されたディジタ
ル信号にアナログ−ディジタル変換(以下、A−D変換
と記す)すると、第2図(b)に示すように、各波高l
1a(al、az・・・・・・)に対応する識別コード
(bl、bl・・・・・・)が得られる。磁気カードC
の識別領域2bには、この識別コード(bl、bl・・
・・・・)が記録されている。
If each of these wave heights 1ia (at, az...) is sequentially sampled and converted into, for example, a 4-pit coded digital signal, analog-to-digital conversion (hereinafter referred to as A-D conversion) is performed. As shown in Figure 2(b), each wave height l
An identification code (bl, bl...) corresponding to 1a (al, az...) is obtained. magnetic card C
This identification code (bl, bl...
...) are recorded.

このようにして作成された磁気カードCの利用のために
、カード読取り装置は例えば、第3図に示すように構成
される。
In order to utilize the magnetic card C created in this manner, a card reading device is configured as shown in FIG. 3, for example.

図において、磁気カードCから磁気ヘッド11を介して
再生増幅器12によって増幅された再生信号のうち、0
1右データの再生信号はピークホールド回路13によっ
て、その各波高値がサンプリングされ、△−り変換器1
4によって4ビツトの符号化された検出コードに順次変
換され、記憶器15に記憶されると同時に波形整形器1
6によって矩形波に整形され、記4!!器19に記憶さ
れ、各情報として利用される。
In the figure, 0 of the reproduction signals amplified by the reproduction amplifier 12 from the magnetic card C via the magnetic head 11.
The reproduced signal of the 1 right data is sampled at each peak value by the peak hold circuit 13, and then sent to the Δ-reconverter 1.
4 is sequentially converted into a 4-bit encoded detection code and stored in the memory 15, and at the same time the waveform shaper 1
It is shaped into a square wave by 6, and written in 4! ! The information is stored in the device 19 and used as various information.

一方、識別コードの再生信号は、波形整形器16によっ
て、矩形波に整形され、記憶器17に記憶される。
On the other hand, the reproduction signal of the identification code is shaped into a rectangular wave by the waveform shaper 16 and stored in the memory 17.

記憶器15に記憶された検出コードと記憶器17に記憶
された識別コードは、比較器18によって比較され、こ
の結果、磁気カードの正当性が識別される。
The detection code stored in the storage device 15 and the identification code stored in the storage device 17 are compared by a comparator 18, and as a result, the authenticity of the magnetic card is identified.

即ち、正当な磁気カードであれば、上記のカード読取り
装置で再生された個有データの各波高値は、磁気カード
作成時に再生された個有データの各波高値とほぼ等しい
ため、カード読取り装置の比較器18において、検出コ
ードと識別コードとはほぼ一致する。
In other words, if the magnetic card is a valid magnetic card, each peak value of the unique data reproduced by the above-mentioned card reading device is almost equal to each peak value of the unique data reproduced when the magnetic card was created. In the comparator 18, the detection code and the identification code almost match.

従って、この時、この磁気カードは正当なものとして評
価され所定処理を受ける。
Therefore, at this time, this magnetic card is evaluated as legitimate and undergoes predetermined processing.

また、再婁込みしたり、コピーしたりして不正に作成さ
れた磁気カードでは、個有データの再生信号の各波高値
が、その識別コードと大幅に異なってしまうため、カー
ド読取り装置の比較器18における検出コードと識別コ
ードとの差が著しくなる。
In addition, in the case of magnetic cards that have been illegally created by re-infiltration or copying, the peak values of the reproduction signal of the unique data will be significantly different from the identification code, so it is difficult to compare the card reading device. The difference between the detection code and the identification code in the device 18 becomes significant.

従って、この磁気カードは、不当なものとして評価され
、所定の処理(例えば返却)を受ける。
Therefore, this magnetic card is evaluated as invalid and undergoes predetermined processing (for example, return).

く本発明の他の実施例〉(第4図) なお、上記実施例では、磁気カード作成時に、個有デー
タの再生波形のゼロボルトからの波高値に基づいて、識
別コードを得るようにしていたが、これは、第4図のよ
うに、波高値から次の波高値の差(C1、C2・・・・
・・)に基づいて、識別コードを得るようにしてもよい
Other Embodiments of the Present Invention> (Figure 4) In the above embodiment, when creating a magnetic card, the identification code is obtained based on the peak value from zero volts of the reproduced waveform of the unique data. However, as shown in Figure 4, this is the difference between the peak value and the next peak value (C1, C2...
), the identification code may be obtained.

また、上記実施例では、個有データの再生波形の各波高
値をA−D変換して、得られたコードを直接識別コード
としていたが、A−Dffl換後のコードを所定の演算
データに基づいて変換したものを識別コードとすれば、
カードの偽造防止に一層の効果がある。
In addition, in the above embodiment, each peak value of the reproduced waveform of the unique data is A-D converted and the resulting code is directly used as the identification code, but the code after A-Dffl conversion is converted into predetermined calculation data. If the identification code is the one converted based on the
This is more effective in preventing card counterfeiting.

また、第1図の磁気カードCにおいて、個有領Vt、2
aと識別fljt42bを1つのストライブを分割して
利用しているが、これにより個有領域2aの領域が不足
する時はストライブを複数本使用しデータ借を増すよう
にしてもよい。
In addition, in the magnetic card C in Fig. 1, private territory Vt, 2
a and the identification fljt 42b are used by dividing one stripe, but if this results in a shortage of area in the unique area 2a, a plurality of stripes may be used to increase the data capacity.

く本発明の効果〉 以上のように、本発明の磁気カード識別方式では、デー
タと、このデータの再生信号の所定の標本値をA−D変
換して作成された識別コードとを、予め磁気カードに富
込み、カード読取り装置において、前記データを再生し
、該再生信号の所定の標本値をA−D変換して検出コー
ドを作成し、該検出コードと前記磁気カードに予め書込
まれた識別コードとを比較することによって磁気カード
の正当性を識別するようにしているため、再書込み等に
よって偽造された磁気カ二ドの不正使用や、データに誤
りのある磁気カードによるn器の誤動作を防止すること
ができる。
Effects of the Present Invention> As described above, in the magnetic card identification method of the present invention, data and an identification code created by A-D converting a predetermined sample value of a reproduced signal of this data are The card is enriched with data, the card reading device reproduces the data, A-D converts a predetermined sample value of the reproduced signal to create a detection code, and the detection code and the data written in advance on the magnetic card are Since the validity of the magnetic card is determined by comparing it with the identification code, there is a risk of unauthorized use of a magnetic card that has been forged by rewriting, etc., or malfunction of the device due to a magnetic card with incorrect data. can be prevented.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明に用いられる磁気カードの一実施例を
示す図、第2図(a)は、磁気カードのデータ再生波形
を示す図、第2図(b)は、第2図(a)の各波高値を
標本化してアナログ−ディジタル変換して1りられた信
号を示す図、第3図は、本発明に用いられるカード読取
り装置の要部を示すブロック図である。第4図は本発明
の他の標本化の例を示す因である。 C・・・・・・磁気カード、1・・・・・・磁気記録帯
、2a・・・・・・個有領域、2b・・・・・・識別領
域、11・・・・・・磁気ヘッド、12・・・・・・再
生増幅器、13・・・・・・ピークボールド回路、14
・・・・・・A−D変換器、15・・・・・・記憶器、
16・・・・・・波形整形器、17・・・・・・記!!
器、18・・・・・・比較器、19・・・・・・記憶器
。 代理人  弁理士  早 川 誠 志 第1図 第2図
FIG. 1 is a diagram showing an embodiment of the magnetic card used in the present invention, FIG. 2(a) is a diagram showing data reproduction waveforms of the magnetic card, and FIG. FIG. 3 is a block diagram showing the main parts of the card reading device used in the present invention. FIG. 4 shows another sampling example of the present invention. C...Magnetic card, 1...Magnetic recording band, 2a...Individual area, 2b...Identification area, 11...Magnetic Head, 12... Regenerative amplifier, 13... Peak bold circuit, 14
...A-D converter, 15...memory device,
16... Waveform shaper, 17... Record! !
Container, 18... Comparator, 19... Memory device. Agent Patent Attorney Makoto Hayakawa Figure 1 Figure 2

Claims (1)

【特許請求の範囲】 データと、該データの再生信号の所定の標本値をアナロ
グ−ディジタル変換して作成された識別コードとを磁気
カードに予め書込み; カード読取り装置によつて、前記データを再生し、該再
生信号の所定の標本値をアナログ−ディジタル変換して
検出コードを作成し、該検出コードと前記識別コードと
を比較することによつて磁気カードの正当性を識別する
ようにしたことを特徴とする磁気カード識別方式。
[Claims] Data and an identification code created by analog-to-digital conversion of a predetermined sample value of a reproduction signal of the data are written in advance on a magnetic card; the data is reproduced by a card reading device. A detection code is created by analog-to-digital conversion of a predetermined sample value of the reproduced signal, and the validity of the magnetic card is identified by comparing the detection code with the identification code. A magnetic card identification method featuring:
JP61151047A 1986-06-27 1986-06-27 Magnetic card identifying system Granted JPS638861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61151047A JPS638861A (en) 1986-06-27 1986-06-27 Magnetic card identifying system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61151047A JPS638861A (en) 1986-06-27 1986-06-27 Magnetic card identifying system

Publications (2)

Publication Number Publication Date
JPS638861A true JPS638861A (en) 1988-01-14
JPH0568756B2 JPH0568756B2 (en) 1993-09-29

Family

ID=15510136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61151047A Granted JPS638861A (en) 1986-06-27 1986-06-27 Magnetic card identifying system

Country Status (1)

Country Link
JP (1) JPS638861A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003233901A (en) * 2002-02-07 2003-08-22 Prime:Kk Device and method for analyzing magnetic card

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035321U (en) * 1983-08-11 1985-03-11 三菱重工業株式会社 magnetic card
JPS6044219U (en) * 1983-09-02 1985-03-28 三菱重工業株式会社 magnetic card

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2433067B2 (en) * 1974-07-10 1977-11-24 a- [4-(4" Trifluormethylphenoxy)-phenoxy] -propionsäuren und deren Derivate, Verfahren zu ihrer Herstellung und diese enthaltende herbizide Mittel Hoechst AG, 6000 Frankfurt ALPHA SQUARE BRACKETS ON 4- (4 'TRIFLUORMETHYLPHENOXY) -PHENOXY SQUARE BRACKETS ON PROPIONIC ACIDS AND THEIR DERIVATIVES, METHOD FOR THEIR PRODUCTION AND HERBICIDAL AGENTS CONTAINING THESE
JPS6044219B2 (en) * 1981-10-07 1985-10-02 日本電気株式会社 Paper ejection device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035321U (en) * 1983-08-11 1985-03-11 三菱重工業株式会社 magnetic card
JPS6044219U (en) * 1983-09-02 1985-03-28 三菱重工業株式会社 magnetic card

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003233901A (en) * 2002-02-07 2003-08-22 Prime:Kk Device and method for analyzing magnetic card

Also Published As

Publication number Publication date
JPH0568756B2 (en) 1993-09-29

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