JPS6051154B2 - Magnetic card verification device - Google Patents
Magnetic card verification deviceInfo
- Publication number
- JPS6051154B2 JPS6051154B2 JP53097982A JP9798278A JPS6051154B2 JP S6051154 B2 JPS6051154 B2 JP S6051154B2 JP 53097982 A JP53097982 A JP 53097982A JP 9798278 A JP9798278 A JP 9798278A JP S6051154 B2 JPS6051154 B2 JP S6051154B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- card
- magnetic
- set bias
- detecting
- 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.)
- Expired
Links
Description
【発明の詳細な説明】
この発明は、コード信号によりあらかじめ方向が決定さ
れたセットバイアス磁界と被照合用の磁気カードの信号
磁界との合成磁界の全ての方向を一致させてコード信号
の照合を行なうようにした簡単な構成の磁気カード照合
装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention verifies code signals by matching all directions of a composite magnetic field of a set bias magnetic field whose direction is determined in advance by a code signal and a signal magnetic field of a magnetic card to be verified. The present invention relates to a magnetic card verification device having a simple configuration.
つぎに、この発明を、その１実施例を示した図面ととも
に詳細に説明する。まず、磁界検出板の構成要素である
磁界方向検出素子について説明すると、第１図に示すよ
うに、Ｎｉ−Ｃｏ合金等の金属膜により同一抵抗値を有
する２個の素子部１、２を縦方向および横方向に配列す
るとともに、両素子部１、２を電気的に接続して強磁性
金属膜磁気抵抗素子３を形成する。Next, the present invention will be described in detail with reference to drawings showing one embodiment thereof. First, to explain the magnetic field direction detection element, which is a component of the magnetic field detection plate, as shown in Fig. 1, two element parts 1 and 2 having the same resistance value are vertically connected by a metal film such as Ni-Co alloy. The ferromagnetic metal film magnetoresistive element 3 is formed by arranging the elements 1 and 2 in both the direction and the lateral direction and electrically connecting both the element parts 1 and 2.
したがつて、この磁界抵抗素子３の両端に’Ｖｏなる電
圧を印加すると、各素子部１、２を流れる電流はそれぞ
れ縦方向および横方向となる。そして、磁界抵抗素子３
は、外部磁界により、電流の流れる方向に対し平行に磁
化された時に抵抗値が大きくなり、かつ電流の流れる方
向に対し直角に磁化された時には抵抗値がほとんど変化
しない性質を有している。そのため、磁気抵抗素子３の
両素子部１、２の接続点から出力端子４を導出すると、
出力端子４の出力電圧の変化により外部磁界の方向を検
出することがてき、磁界方向検出素子５を形成すること
ができる。いま、縦方向の素子部１の電流方向に平行な
外部磁界Ｍの方向θを００とし、かつ横方向の素子部２
の電流方向に平行な外部磁界Ｍの方向θを９００とすれ
ば、出力電圧りは、ＶｏΔＲｃｏｓ２θ
Ｖθ＝−−Ｖ０
の式で示される。Therefore, when a voltage 'Vo is applied to both ends of this magnetic field resistance element 3, the currents flowing through each element part 1 and 2 are in the vertical direction and the horizontal direction, respectively. And magnetic field resistance element 3
has a property that its resistance value becomes large when it is magnetized by an external magnetic field in parallel to the direction of current flow, and its resistance value hardly changes when it is magnetized at right angles to the direction of current flow. Therefore, when the output terminal 4 is derived from the connection point between both element parts 1 and 2 of the magnetoresistive element 3,
The direction of the external magnetic field can be detected by changing the output voltage of the output terminal 4, and a magnetic field direction detection element 5 can be formed. Now, let the direction θ of the external magnetic field M parallel to the current direction of the vertical element part 1 be 00, and the horizontal element part 2 be
If the direction θ of the external magnetic field M parallel to the current direction is 900, the output voltage is expressed by the formula VoΔRcos2θ Vθ=−−V0.
なお、前式において、Ｖｏは印加電圧を示し、また、Ｒ
ＯおよびΔＲは、素子部１，２が電流方向に対しそれぞ
れ平行に磁化された時の抵抗値をＲＰｌ素子部１，２が
電流方向に対しそれぞれ直角に磁化された時の抵抗値を
Ｒｖとすれば、の関係式で表わされる抵抗値である。Note that in the above equation, Vo represents the applied voltage, and R
O and ΔR are the resistance values when the element parts 1 and 2 are respectively magnetized parallel to the current direction, and Rv is the resistance value when the element parts 1 and 2 are respectively magnetized at right angles to the current direction. Then, it is the resistance value expressed by the relational expression.
そして、外部磁界Ｍの方向θが０抵および９００の時の
出力電圧をそれぞれＶ−および■＋とすれば、の２つの
極値として出力端子４に導出され、外部磁界Ｍの方向を
検出することができる。Then, if the output voltages when the direction θ of the external magnetic field M is 0 resistance and 900 resistance are respectively V- and ■+, then the two extreme values of are derived to the output terminal 4, and the direction of the external magnetic field M is detected. be able to.
また、第２図は磁界方向検出素子３を金属膜により実際
に形成する場合のパターンを例示したものである。つぎ
に、第３図を参照してこの発明の着眼点を説明する。い
ま、第１図および第３図ａ図の破線で示すように、磁界
方向検出素子５の素子部１に対して４５にの角度でセッ
トバイアス磁界ＨＢをあらかじめ印加しておき、つぎに
、第３図ａ図に示すように、被照合用の信号磁界Ｈｓを
、セットバイアス磁界ＨＢに対し−９００の角度すなわ
ち３１５の角度でかつセットバイアス磁界ＨＢと同程度
の強さで印加すると、磁界方向検出素子５に印加される
この両磁界ＨＢ，ＨＳの合成磁界Ｈｔは、ベクトル和に
よりＯ＝０Ｂの方向にＩＨｔｌ＝ＪｌＨｓｌ２＋ＩＨＢ
ピの強さで示され、したがつて、生力端子４に■−の出
力電圧が得られる。Further, FIG. 2 shows an example of a pattern when the magnetic field direction detection element 3 is actually formed from a metal film. Next, the focus of the present invention will be explained with reference to FIG. Now, as shown by the broken line in FIG. 1 and FIG. As shown in Figure 3a, when the signal magnetic field Hs for comparison is applied at an angle of -900, that is, 315 with respect to the set bias magnetic field HB, and with the same strength as the set bias magnetic field HB, the magnetic field direction The combined magnetic field Ht of both magnetic fields HB and HS applied to the detection element 5 is IHtl=JlHsl2+IHB in the direction of O=0B by vector sum.
Therefore, an output voltage of - is obtained at the raw power terminal 4.
また、同ｂ図に示すように、セットバイアス磁界ＨＢの
方向を同ａ図と同様に４５トの角度で印加するとともに
、信号磁界Ｈｓを同ａ図の反対方向の１３５との角度で
印加すると、合成磁界Ｈｔは９０のの方向にな．り、磁
界方向検出素子５からＶ＋の出力電圧が得られる。さら
に、同Ｃ図および同ｄ図に示すように、セットバイアス
磁界ＨＢの方向を反転させて２２５ッの角度で印加する
とともに、信号磁界Ｈｓをセットバイアス磁界ＨＢに対
しそれぞれ９０界およ−び−９０イの角度、すなわち３
１５ぞおよび１３５−の角度でそれぞれ印カロすると、
磁界方向検出素子５からは、前述の同ａ図および同ｂ図
の場合とは逆にＶ−およびＶ＋の出力電圧がそれぞれ得
られる。すなわち、セットバイアス磁界ＨＢと信号磁界
Ｈｓとの組合わせにより、磁界方向検出素子５に印加さ
れる合成磁界Ｈｔを００の縦方向および９００の横方向
に任意に可変することができ、この発明は、この合成磁
界Ｈｔの方向により照合を行なおうとするものである。
つぎに、第４図ないし第７図によりこの発明の構成およ
び動作を説明する。In addition, as shown in figure b, the direction of the set bias magnetic field HB is applied at an angle of 45t as in figure a, and the signal magnetic field Hs is applied at an angle of 135 in the opposite direction of figure a. , the composite magnetic field Ht is in the direction of 90. As a result, an output voltage of V+ is obtained from the magnetic field direction detection element 5. Furthermore, as shown in Figures C and D, the direction of the set bias magnetic field HB is reversed and applied at an angle of 225mm, and the signal magnetic field Hs is applied at an angle of 90° and 90° with respect to the set bias magnetic field HB, respectively. -90 i angle, i.e. 3
If we mark the angles of 15 and 135- respectively, we get
From the magnetic field direction detection element 5, output voltages of V- and V+ are obtained, respectively, contrary to the cases shown in FIGS. That is, by combining the set bias magnetic field HB and the signal magnetic field Hs, the composite magnetic field Ht applied to the magnetic field direction detection element 5 can be arbitrarily varied in the vertical direction of 00 and the horizontal direction of 900. , the verification is performed based on the direction of this composite magnetic field Ht.
Next, the configuration and operation of the present invention will be explained with reference to FIGS. 4 to 7.
第４図に示すように、ガラスまたはセラミック等の同一
の基板６に、前述の磁界方向検出素子５を行および列に
配設して磁界検出板７を形成する。As shown in FIG. 4, a magnetic field detection plate 7 is formed by arranging the aforementioned magnetic field direction detection elements 5 in rows and columns on the same substrate 6 made of glass or ceramic.
この形成方法としては、基板６に、金属膜の簡単な蒸着
とホトリソグラフィーの技術により、磁界方向検出素子
５を容易にかつ高密度に形成することができる。そして
、第７図に示すように、磁界検出板７の一面に近接して
設けられる照合用カード８は、第５図に示すように構成
する。As for this formation method, the magnetic field direction detection elements 5 can be formed easily and with high density on the substrate 6 by simple vapor deposition of a metal film and photolithography technique. As shown in FIG. 7, the verification card 8 provided close to one surface of the magnetic field detection plate 7 is configured as shown in FIG. 5.
すなわち、ゴムフェライトシート等の硬質磁性体９の磁
界方向検出素子５に重合する位置に、磁界成分が縦また
は横方向に対し４５るの角度でかつ前述の第３図Ａ，ｂ
図と同一の磁界方向を有するセットバイアス磁界Ｈ８を
発生する第１の磁界発生部１０と、第３図Ｃ，ｄ図と同
一の磁界方向を有するセットバイアス磁界を発生する第
２の磁界発生部１１とを、あらかじめ決定されたコード
信号に基づいた配置によりスポット着磁して照合用カー
ド８を形成する。つぎに、磁界検出板８の他面に髄時当
てがわれる被照合用の磁気カード１２は、第６図に示す
ように、照合用カード８と同一材質および同一形状の硬
質磁性体１３の磁界方向検出素子５に重合する位置に、
磁界成分がセットバイアス磁界Ｈ８に対し９０、または
−９０ッの角度でかつ前述の第３図Ａ，ｃ図と同一の磁
界方向を有する信号磁界Ｈｓを発生する第１の磁界発生
部１４と、第３図Ｂ，ｄ図と同一の磁界方向を有する信
号磁界Ｈｓを発生する第２の磁界発生部１５とを、それ
ぞれ対向するセットバイアス磁界Ｈ８に応じた配置でか
つセットバイアス磁界と同一の強さに着磁して形成する
。That is, at the position where the hard magnetic material 9, such as a rubber ferrite sheet, overlaps the magnetic field direction detection element 5, the magnetic field component is at an angle of 45 degrees with respect to the vertical or horizontal direction, and at the position shown in FIGS.
A first magnetic field generating section 10 that generates a set bias magnetic field H8 having the same magnetic field direction as shown in the figure, and a second magnetic field generating section that generates a set bias magnetic field having the same magnetic field direction as shown in FIGS. 3C and d. 11 are spot-magnetized in an arrangement based on a predetermined code signal to form a verification card 8. Next, as shown in FIG. 6, the magnetic card 12 to be verified, which is applied to the other surface of the magnetic field detection plate 8, is exposed to the magnetic field of a hard magnetic material 13 made of the same material and the same shape as the verification card 8. At a position superimposed on the direction detection element 5,
a first magnetic field generating section 14 that generates a signal magnetic field Hs in which the magnetic field component is at an angle of 90 or -90 with respect to the set bias magnetic field H8 and has the same magnetic field direction as in FIGS. 3A and 3C; A second magnetic field generating section 15 that generates a signal magnetic field Hs having the same magnetic field direction as in FIGS. It is formed by magnetizing it.
したがつて、磁界検出板７の全ての磁界方向検出素子５
から■ゃまたは■の出力電圧が得られるように照合用カ
ード８および磁気カード１２を形成しておけば、非常に
簡単な照合装置が得られる。Therefore, all the magnetic field direction detection elements 5 of the magnetic field detection plate 7
If the verification card 8 and the magnetic card 12 are formed so that an output voltage of 1 or 2 can be obtained, a very simple verification device can be obtained.
例えば、第５図および第６図にそれぞれ示す照合用カー
ド８および磁気カード１２を重合すると、照合用カード
８および磁気カード１２を重合すると、照合用カード８
の各セットバイアス磁界Ｈ８と磁気カード１２の各信号
磁界Ｈｓとの合成磁界Ｈｔの方向は、必らず００または
１８００となり、この合成磁界Ｈｔの方向か磁界検出板
７の各磁界方向検出素子５により検出され、各磁界方向
検出素子５の出力電圧は全てＶ−となる。すなわち、所
定のコード信号に基づいて形成された照合用カードと照
合して各磁界方向検出素子５の出力電圧が全てＶ−とな
る磁気カード１２は唯一である。なお、照合用カード８
のセットバイアス磁界の方向を全て同一に形成すれば、
磁気カード１２に着磁されたコード信号の読取りを行な
うことができる。以上のように、この発明の磁気カード
照合装置によると、電流方向がそれぞれ縦方向および横
方向になるように形成された２個の素子部を有する強磁
性金属膜磁気抵抗素子の２個の素子部の接続点に出力端
子を設けて縦および横方向の磁界方向検出素子を構成す
るとともに、磁界方向検出素子を同一基板上に多数個配
設して磁界検出板を形成し、磁界検出板の一面に設けら
れる照合用カードを、各磁界方向検出素子に重合する位
置に縦または横方向に対し４５素の角度でかつ方向がコ
ード信号に応じて決定されたセットバイアス磁界の発生
部を配設した形成し、磁界検出板の他面に当てがわれる
磁気カードを、各磁界方向検出素子に重合する位置に各
セットバイアス磁界に対し９００の角度の信号磁界の発
生部を配設して形成し、磁気カードを磁界検出板に重合
し、セットバイアス磁界と信号磁界との各合成磁界の全
ての方向を、各磁界方向検出素子の縦または横方向のう
ちの一方向に一致させて検出し、コード信号の照合を行
なうようにすることにより、強磁性金属膜磁気抵抗素子
からなる磁界検出板と２枚のカードにより非常に構成の
簡単な磁気カード照合装置を構成することができる。For example, when the verification card 8 and the magnetic card 12 shown in FIG. 5 and FIG.
The direction of the composite magnetic field Ht of each set bias magnetic field H8 and each signal magnetic field Hs of the magnetic card 12 is always 00 or 1800. The output voltage of each magnetic field direction detection element 5 is all V-. That is, there is only one magnetic card 12 in which all the output voltages of the magnetic field direction detection elements 5 become V- when compared with a verification card formed based on a predetermined code signal. In addition, verification card 8
If the directions of the set bias magnetic fields of are all formed in the same way,
A code signal magnetized on the magnetic card 12 can be read. As described above, according to the magnetic card verification device of the present invention, the two elements of the ferromagnetic metal film magnetoresistive element each having two element parts formed such that the current directions are vertical and horizontal, respectively. Output terminals are provided at the connection points of the parts to configure vertical and horizontal magnetic field direction detection elements, and a large number of magnetic field direction detection elements are arranged on the same substrate to form a magnetic field detection plate. A set bias magnetic field generator whose direction is determined according to the code signal and which is at an angle of 45 elements with respect to the vertical or horizontal direction is arranged at a position where the verification card provided on one side overlaps each magnetic field direction detection element. A magnetic card applied to the other surface of the magnetic field detection plate is formed by arranging a signal magnetic field generating part at an angle of 900 with respect to each set bias magnetic field at a position overlapping each magnetic field direction detection element. , a magnetic card is superimposed on a magnetic field detection plate, and all directions of each composite magnetic field of the set bias magnetic field and the signal magnetic field are detected by matching one of the vertical or horizontal directions of each magnetic field direction detection element, By verifying the code signals, it is possible to construct a very simple magnetic card verification device using a magnetic field detection plate made of a ferromagnetic metal film magnetoresistive element and two cards.
また、製造上からも照合上カードと磁気カードとは同一
形状に形成できる利点がある。Further, from the manufacturing point of view, there is an advantage that the card and the magnetic card can be formed into the same shape for verification purposes.
図面はこの発明の磁気カード照合装置の１実施例を示し
、第１図および第２図は磁界方向検出素子を示し、第１
図は構成図、第２図はパターンを示す図、第３図Ａ，ｂ
，ｃ，ｄ図はセットバイアス磁界と信号磁界との合成磁
界のベクトル図、第４図，第５図および第６図は磁界検
出板、照合用カードおよび磁気カードのそれぞれ一部を
示す説明図、第７図は磁気カードと照合用カードの照合
状態を示す説明図である。
１，２・・・・・・素子部、３・・・・・・強磁性金属
膜磁気抵抗素子、４・・・・・・出力端子、５・・・・
・・磁界方向検出素子、６・・・・・・基板、７・・・
・・・磁界検出板、８・・・・・・照合用カード、１０
，１１・・・・・・照合用カードの磁界発生部、１２・
・・・・・磁気カード、１４，１５・・・・・・磁気カ
ードの磁界発生部。The drawings show one embodiment of the magnetic card collation device of the present invention, and FIGS. 1 and 2 show a magnetic field direction detection element.
The figure is a configuration diagram, Figure 2 is a diagram showing the pattern, Figure 3 A, b
, c, and d are vector diagrams of the composite magnetic field of the set bias magnetic field and the signal magnetic field, and Figures 4, 5, and 6 are explanatory diagrams showing parts of the magnetic field detection board, verification card, and magnetic card, respectively. , FIG. 7 is an explanatory diagram showing the collation state of the magnetic card and the collation card. 1, 2...Element part, 3...Ferromagnetic metal film magnetoresistive element, 4...Output terminal, 5...
...Magnetic field direction detection element, 6...Substrate, 7...
...Magnetic field detection plate, 8...Verification card, 10
, 11... Magnetic field generating part of verification card, 12.
...magnetic card, 14,15...magnetic field generating part of the magnetic card.
Claims (1)
に形成された２個の素子部を有する強磁性金属膜磁気抵
抗素子の前記２個の素子部の接続点に出力端子を設けて
縦および横方向の磁界方向検出素子を構成するとともに
、前記磁界方向検出素子を同一基板上に多数個配設して
磁界検出板を形成し、前記磁界検出板の一面に設けられ
る照合用カードを、前記各磁界方向検出素子に重合する
位置に縦または横方向に対し４５゜の角度でかつ方向が
コード信号に応じて決定されたセットバイアス磁界の発
生部を配設して形成し、前記磁界検出板の他面に当てが
われる磁気カードを、前記各磁界方向検出素子に重合す
る位置に前記各セットバイアス磁界に対し９０゜の角度
の信号磁界の発生部を配設して形成し、前記磁気カード
を前記磁界検出板に重合し、前記セットバイアス磁界と
前記信号磁界との各合成磁界の全ての方向を、前記各磁
界方向検出素子の縦または横方向のうちの一方向に一致
させて検出し、コード信号の照合を行なうことを特徴と
する磁気カード照合装置。1. An output terminal is provided at the connection point of the two element parts of a ferromagnetic metal film magnetoresistive element having two element parts formed so that the current directions are vertical and horizontal, respectively. A magnetic field direction detecting element for the direction is configured, a large number of the magnetic field direction detecting elements are arranged on the same substrate to form a magnetic field detecting plate, and a collation card provided on one surface of the magnetic field detecting plate is used for each of the magnetic field detecting elements. A set bias magnetic field generation section whose direction is determined according to a code signal and which is at an angle of 45 degrees with respect to the vertical or horizontal direction is disposed at a position overlapping the magnetic field direction detection element to form a set bias magnetic field. A magnetic card to be applied to the other side is formed by arranging a signal magnetic field generation part at an angle of 90 degrees with respect to each of the set bias magnetic fields at a position overlapping each of the magnetic field direction detection elements, and the magnetic card is superimposed on the magnetic field detection plate, detecting all directions of each composite magnetic field of the set bias magnetic field and the signal magnetic field by aligning them with one of the vertical or horizontal directions of each of the magnetic field direction detection elements; A magnetic card verification device characterized by verifying code signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53097982A JPS6051154B2 (en) | 1978-08-10 | 1978-08-10 | Magnetic card verification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53097982A JPS6051154B2 (en) | 1978-08-10 | 1978-08-10 | Magnetic card verification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5525146A JPS5525146A (en) | 1980-02-22 |
| JPS6051154B2 true JPS6051154B2 (en) | 1985-11-12 |
Family
ID=14206863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53097982A Expired JPS6051154B2 (en) | 1978-08-10 | 1978-08-10 | Magnetic card verification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6051154B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220031Y2 (en) * | 1980-12-27 | 1987-05-22 | ||
| JPS59216278A (en) * | 1983-05-24 | 1984-12-06 | Tdk Corp | Stationary setting type magnetic signal reading device |
| JPH05342431A (en) * | 1992-06-05 | 1993-12-24 | Sankyo Seiki Mfg Co Ltd | Illegal use proofing method for magnetic card or the like |
-
1978
- 1978-08-10 JP JP53097982A patent/JPS6051154B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5525146A (en) | 1980-02-22 |
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