JPH04320594A - Method and structure for identifying information storing card - Google Patents
Method and structure for identifying information storing cardInfo
- Publication number
- JPH04320594A JPH04320594A JP3115408A JP11540891A JPH04320594A JP H04320594 A JPH04320594 A JP H04320594A JP 3115408 A JP3115408 A JP 3115408A JP 11540891 A JP11540891 A JP 11540891A JP H04320594 A JPH04320594 A JP H04320594A
- Authority
- JP
- Japan
- Prior art keywords
- card
- light
- identifying
- received
- information storage
- 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
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000005286 illumination Methods 0.000 claims abstract description 31
- 230000001678 irradiating effect Effects 0.000 claims abstract description 6
- 230000003287 optical effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Landscapes
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、リーダライタにて情報
の授受が行われる磁気カード、ＩＣカード、光カード等
の情報記憶カードが偽造されることを防止するべく、リ
ーダライタにセットされたカードが正規のカードである
ことを識別するための方法及び構造に関するものである
。[Industrial Application Field] The present invention is designed to prevent counterfeiting of information storage cards such as magnetic cards, IC cards, and optical cards that exchange information with the reader/writer. The present invention relates to a method and structure for identifying that a card is a legitimate card.
【０００２】0002
【従来の技術】従来から、例えば磁気カードが偽造され
ることを防止するべくバーコード若しくは磁気バーコー
ドをカードの表面に設けたり、また再使用しない磁気カ
ードにあっては磁気記録面に使用後にパンチ孔を穿設す
る等の方法が実施されていたが、上記各方法では偽造す
る側が比較的容易にその構造を解析し得ると共に比較的
安価な装置を用いてカードを偽造することができると云
う問題があった。また、カードの表面に目視検査するた
めのホログラムを設けた構造もあるが、このホログラム
に似せた通常印刷によりその真偽を惑わされ、識別の信
頼性を欠くと云う問題があった。[Prior Art] Conventionally, for example, in order to prevent magnetic cards from being counterfeited, a bar code or a magnetic bar code has been provided on the surface of the card, and for magnetic cards that are not to be reused, a magnetic bar code has been provided on the magnetic recording surface after use. Methods such as punching holes have been implemented, but with each of the above methods, the counterfeiter can relatively easily analyze the structure and use relatively inexpensive equipment to counterfeit the card. There was a problem. There is also a structure in which a hologram is provided on the surface of the card for visual inspection, but there is a problem in that the regular printing that resembles the hologram can lead to confusion as to its authenticity, resulting in a lack of reliability in identification.
【０００３】そこで、本願と同一出願人による特願平１
−２０９０６５号明細書には、カード表面に固有の反射
方向特性としての回折特性を有するホログラム反射面部
を設け、リーダライタに上記カードの反射面部に向けて
照明光を照射する手段と、反射面部からの反射光をその
反射方向特性に対応する位置にて受光する受光手段と、
この受光手段にて受光した光の強度からリーダライタに
セットされたカードが正規のカードであるか否かを識別
する手段とから構成されるカードの識別構造が記載され
ている。[0003] Therefore, the patent application No. 1 filed by the same applicant as the present application
-209065, a card surface is provided with a hologram reflective surface having a diffraction characteristic as a reflection direction characteristic, a means for irradiating illumination light toward a reader/writer toward the reflective surface of the card, and light receiving means for receiving the reflected light at a position corresponding to the reflection direction characteristics;
A card identification structure is described that includes means for identifying whether or not a card set in a reader/writer is a legitimate card based on the intensity of light received by the light receiving means.
【０００４】上記明細書に於ける識別構造では、リーダ
ライタにカードがセットされると、カードの反射面部に
向けて照明光を照射し、その反射光を受光面部にて受光
し、その受光強度が所定値以上であれば正規のカードで
あると識別するようになっている。[0004] In the identification structure in the above specification, when a card is set in the reader/writer, illumination light is irradiated toward the reflective surface of the card, the reflected light is received by the light receiving surface, and the received light intensity is measured. If the value is greater than a predetermined value, the card is identified as a legitimate card.
【０００５】この識別構造によれば、カードの偽造を目
的とする上記反射面部の解析は困難であるばかりでなく
、ホログラムからなる反射面部を作成するには多大なコ
ストを要することから、正規のカードと同様なカードを
偽造することが実質的に不可能となる。また、カードを
識別するのは、反射面部に照明光を照射し、受光手段に
て受光した光の強度を光電変換してその出力電圧を所定
の閾値電圧と比較するのみの簡単な構造であり、リーダ
ライタに設けられる設備が大型化／複雑化することがな
い。According to this identification structure, it is not only difficult to analyze the reflective surface part for the purpose of counterfeiting a card, but also because it requires a great deal of cost to create a reflective surface part made of a hologram. It becomes virtually impossible to counterfeit a card similar to the card. In addition, the card is identified using a simple structure that only irradiates the reflective surface with illumination light, photoelectrically converts the intensity of the light received by the light receiving means, and compares the output voltage with a predetermined threshold voltage. , the equipment installed in the reader/writer does not become larger/complicated.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記識
別構造ではリーダライタにセットされたカードが正規の
カードであっても汚れ等により反射面部の反射効率が低
くなっていると、受光手段にて受光した光の強度が所定
値よりも高くならず、場合によってはこのカードは正規
のカードではないと誤認することが考えられる。また、
逆にリーダライタにセットされたカードが正規のカード
でなくても例えばカードの表面全体が白色などの反射率
の高い色をなす場合、照明光を略全反射するため、場合
によってはこのカードを正規のカードであると誤認する
ことも考えられる。However, in the above identification structure, even if the card set in the reader/writer is a legitimate card, if the reflection efficiency of the reflective surface part is low due to dirt etc., the light receiving means will not receive the light. If the intensity of the light emitted does not exceed a predetermined value, it is possible that the card may be mistakenly recognized as not being a legitimate card. Also,
On the other hand, even if the card set in the reader/writer is not a regular card, if the entire surface of the card has a highly reflective color such as white, the illumination light will be almost completely reflected, so in some cases this card may It is also possible that the card may be mistakenly recognized as a legitimate card.
【０００７】そこで、本発明者らは複数の方向に所定の
割合で照明光を反射する反射方向特性を有するホログラ
ムを上記反射面部として用いれば、反射効率が低下して
も同じ版から作製したホログラムであれば反射方向の分
布は変わらない点及び全反射の場合には各反射方向の分
布が均一化する点に着目した。[0007] Therefore, the present inventors proposed that if a hologram having a reflection direction characteristic that reflects illumination light in a plurality of directions at a predetermined ratio is used as the above-mentioned reflection surface part, the hologram produced from the same plate will be We focused on the fact that in this case, the distribution of reflection directions does not change, and in the case of total reflection, the distribution of each reflection direction becomes uniform.
【０００８】このような従来技術の課題に鑑み、本発明
の主な目的は、カードの偽造防止効果が高く、リーダラ
イタにセットされたカードが正規のカードであることを
容易に、かつ確実に識別可能な情報記憶カードの識別方
法及び識別構造を提供することにある。In view of the problems of the prior art, the main object of the present invention is to have a high effect of preventing card forgery, and to easily and reliably confirm that the card set in the reader/writer is a genuine card. An object of the present invention is to provide an identification method and an identification structure for an identifiable information storage card.
【０００９】[0009]
【課題を解決するための手段】このような目的は本発明
によれば、固有の反射方向特性を有する反射面部を表面
に有する情報記憶カードとの間で情報の授受を行うリー
ダライタにて、前記カードが正規のカードであることを
識別するための情報記憶カードの識別方法であって、前
記反射面部に向けて照明光を照射し、その反射光を前記
反射面部の反射方向特性に対応する位置に設けられた複
数の受光面部にて受光し、前記各受光面部にて受光した
光の強度分布と、正規のカードに於ける反射面部に照明
光を照射したときに各受光面部にて受光した光の強度分
布とを比較することにより前記カードが正規のカードで
あることを識別することを特徴とする情報記憶カードの
識別方法、または固有の反射方向特性を有する反射面部
を表面に有する情報記憶カードとの間で情報の授受を行
うリーダライタにて前記カードが正規のカードであるこ
とを識別するための情報記憶カードの識別構造であって
、前記反射面部に向けて照明光を照射する手段と、前記
前記反射面部からの反射光をその反射方向特性に対応す
る位置に設けられた複数の受光面部にて受光する手段と
、正規のカードの反射面部に照明光を照射したときに各
受光面部にて受光した光の強度分布を記憶する手段と、
前記カードの反射面部に照明光を照射したときの各受光
面部の受光強度分布と前記記憶された正規のカードに於
ける受光強度分布とを比較することにより前記カードが
正規のカードであることを識別する手段とを有すること
を特徴とする情報記憶カードの識別構造を提供すること
により達成される。[Means for Solving the Problems] According to the present invention, this object is achieved by a reader/writer that exchanges information with an information storage card having a reflective surface portion on its surface having a unique reflection direction characteristic. An information storage card identification method for identifying that the card is a regular card, the method comprising: irradiating illumination light toward the reflective surface portion, and causing the reflected light to correspond to a reflection direction characteristic of the reflective surface portion. Light is received by multiple light-receiving surfaces provided at different positions, and the intensity distribution of the light received by each of the light-receiving surfaces and the light received by each light-receiving surface when illumination light is irradiated onto the reflective surface of a regular card. A method for identifying an information storage card, characterized in that the card is identified as a regular card by comparing the intensity distribution of light, or information having a reflective surface portion having a unique reflection direction characteristic on the surface. An identification structure for an information storage card for identifying that the card is a regular card in a reader/writer that exchanges information with the storage card, and irradiates illumination light toward the reflective surface portion. means for receiving the reflected light from the reflective surface section at a plurality of light receiving surface sections provided at positions corresponding to the reflection direction characteristics; means for storing the intensity distribution of light received by the light receiving surface;
By comparing the received light intensity distribution of each light receiving surface when illumination light is irradiated onto the reflective surface of the card and the received light intensity distribution of the stored regular card, it can be determined that the card is a regular card. This is achieved by providing an identification structure for an information storage card, characterized in that it has identification means.
【００１０】0010
【作用】上述の構成によれば、カードの表面色、または
汚れの状態に関わらず各受光面部の受光強度分布を正規
のカードに照明光を照射したときの受光強度分布と比較
することでリーダライタにセットされたカードが正規の
カードであるか否かを識別できる。[Operation] According to the above-mentioned configuration, regardless of the surface color or dirtiness of the card, the reader It is possible to identify whether the card set in the writer is a genuine card or not.
【００１１】[0011]
【実施例】以下に本発明の好適実施例を添付の図面につ
いて詳しく説明する。図１は本発明が適用された実施例
であり、磁気カード１及びカードリーダライタ内の要部
構造を模式的に示す斜視図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is an embodiment to which the present invention is applied, and is a perspective view schematically showing the main structure of a magnetic card 1 and a card reader/writer.
【００１２】カード１は、カードリーダライタ内にて矢
印の方向、即ち図１に於ける略左右方向に図示されない
搬送ローラ等により駆動され、磁気ヘッド３によりカー
ド１の主面１ａに設けられた磁気ストライプ２に対して
情報の書込みまたは／読出しが行われるようになってい
る。The card 1 is driven within the card reader/writer in the direction of the arrow, that is, approximately in the left-right direction in FIG. Information is written to and/or read from the magnetic stripe 2.
【００１３】カード１の主面１ａの磁気ストライプ２と
並列な位置には受光面部としてのホログラム部４が設け
られている。このホログラム部４は該ホログラムに正対
する方向から照射された所定波長の照明光を、各々固有
の方向に反射する反射方向特性としての回折特性を有す
る反射式ホログラムからなる。A hologram section 4 as a light-receiving surface section is provided on the main surface 1a of the card 1 at a position parallel to the magnetic stripe 2. The hologram section 4 is comprised of a reflection hologram having a diffraction characteristic as a reflection direction characteristic that reflects illumination light of a predetermined wavelength irradiated from a direction directly facing the hologram in a unique direction.
【００１４】一方、カードリーダライタ側に於てカード
１が図１の実線に示す位置にあるときにその主面１ａに
於けるホログラム部４に正対し、かつ該ホログラム部４
に対して所定の間隔をもって離間する位置には、レーザ
光の照射手段としての発光素子５が設けられている。ま
た、図２に良く示すように、発光素子５を囲繞するよう
に、多数の部分６ａ〜６ｈに径方向に沿う多数の分割線
により分割された多分割フォトダイオードからなる受光
面部としての受光素子６が発光素子５と一体的に設けら
れている。この多分割フォトダイオードからなる各部分
６ａ〜６ｈは受光強度に応じて出力電圧が変化するよう
になっている。受光素子６の各部分６ａ〜６ｈはカード
１が正規のカードであるか否かを識別する識別ユニット
７に接続されている。この識別ユニット７には正規のカ
ードのホログラム部に向けて照明光を照射したときの受
光素子６の各部分６ａ〜６ｈからの出力電圧の分布を記
憶する記憶部７ａが付設されている。On the other hand, when the card 1 is in the position shown by the solid line in FIG.
A light emitting element 5 serving as a laser beam irradiation means is provided at a position spaced apart from each other by a predetermined distance. Further, as clearly shown in FIG. 2, a light receiving element as a light receiving surface portion is formed of multi-segmented photodiodes which are divided into many parts 6a to 6h by many dividing lines along the radial direction so as to surround the light emitting element 5. 6 is provided integrally with the light emitting element 5. The output voltage of each portion 6a to 6h of the multi-division photodiode changes depending on the intensity of the received light. Each portion 6a to 6h of the light receiving element 6 is connected to an identification unit 7 that identifies whether the card 1 is a regular card or not. This identification unit 7 is attached with a storage section 7a that stores the distribution of output voltages from each portion 6a to 6h of the light receiving element 6 when illumination light is irradiated toward the hologram section of a regular card.
【００１５】実際にカード１の識別を行うには、カード
リーダライタ内に挿入されたカード１を搬送し、発光素
子５からホログラム部４に向けて照明光を照射する。そ
して、その反射光を受光素子６にて受光する。この受光
素子６の各部分６ａ〜６ｈからの出力電圧即ち受光強度
の分布（表１）と、記憶部７ａに記憶された正規のカー
ドのホログラム部に照明光を照射したときの各部分６ａ
〜６ｈからの出力電圧の分布とを比較してその分布状態
が一致すれば識別ユニット７によりカード１が正規のカ
ードであることを識別する。実際には、各部分６ａ〜６
ｈからの出力電圧即ちアナログ値を例えば３ビットのコ
ードで７段階の受光強度としてとらえ、同様に３ビット
のコードで記憶された正規のカードのホログラム部に照
明光を照射したときの各出力電圧の分布と比較している
。To actually identify the card 1, the card 1 inserted into the card reader/writer is transported, and illumination light is emitted from the light emitting element 5 toward the hologram section 4. Then, the reflected light is received by the light receiving element 6. Distribution of output voltages, that is, received light intensity from each portion 6a to 6h of this light receiving element 6 (Table 1), and each portion 6a when illumination light is irradiated to the hologram portion of the regular card stored in the storage unit 7a.
The distribution of the output voltage from 6h to 6h is compared, and if the distribution states match, the identification unit 7 identifies that the card 1 is a regular card. Actually, each part 6a-6
For example, the output voltage from h, that is, the analog value, is taken as a 3-bit code as seven levels of received light intensity, and each output voltage is obtained when illumination light is irradiated onto the hologram part of a regular card, which is also stored in a 3-bit code. compared with the distribution of
【００１６】上記分布状態の比較は、例えば各部分６ａ
〜６ｈからの出力電圧が記憶部７ａに記憶された対応す
る電圧値に対して全て所定の範囲内にあるか否かを比較
したり、部分６ａ〜６ｈの各電圧値の比または各電圧値
の対数の比等を比較しても良い。[0016] The above-mentioned comparison of the distribution states is carried out, for example, for each portion 6a.
Comparing whether the output voltages from parts 6a to 6h are all within a predetermined range with respect to the corresponding voltage values stored in the storage unit 7a, or comparing the ratio of each voltage value of parts 6a to 6h or each voltage value You may also compare the ratio of the logarithms of .
【００１７】[0017]
【表１】[Table 1]
【００１８】図３は本発明が適用された第２の実施例を
示すホログラム部の平面図である。本実施例では第１の
実施例と同様の構成であるが、ホログラム部１４に５つ
の特定の反射位置１４ａ〜１４ｅが設定されている。カ
ードリーダライタ側では、発光素子５及び受光素子６を
移動することにより、上記特定の反射位置１４ａ〜１４
ｅに向けて順番に発光素子５から照明光を照射し、その
反射光を受光素子６にて受光し、各反射位置１４ａ〜１
４ｅについて各部分６ａ〜６ｈからの出力電圧の分布（
表２）と、記憶部７ａに記憶された正規のカードのホロ
グラム部に照明光を照射したときの各部分６ａ〜６ｈか
らの出力電圧の分布とを比較してその分布状態が一致す
れば識別ユニット７によりカード１が正規のカードであ
ることを識別する。FIG. 3 is a plan view of a hologram section showing a second embodiment to which the present invention is applied. This embodiment has the same configuration as the first embodiment, but five specific reflection positions 14a to 14e are set in the hologram section 14. On the card reader/writer side, by moving the light emitting element 5 and the light receiving element 6, the specific reflection positions 14a to 14 are set.
Illumination light is emitted from the light emitting element 5 in order toward e, and the reflected light is received by the light receiving element 6, and each reflection position 14a to 1
Distribution of output voltage from each part 6a to 6h for 4e (
Table 2) is compared with the distribution of output voltages from each part 6a to 6h when illumination light is irradiated to the hologram part of a regular card stored in the storage unit 7a, and if the distribution states match, identification is made. Unit 7 identifies card 1 as a regular card.
【００１９】尚、本実施例では反射位置を５つとしたが
、これに限定されず任意の数だけ設けて良い。また、本
実施例ではホログラム部に従来と同様のホログラムを使
用し、任意の箇所に５つの反射位置を設定したが、実際
には反射位置への照明光の照射時の誤差があることから
、識別信頼性を向上するべく各反射位置を上記誤差を考
慮した面積とすると良い。In this embodiment, there are five reflection positions, but the number is not limited to five and any number may be provided. In addition, in this example, a hologram similar to the conventional one was used for the hologram section, and five reflection positions were set at arbitrary locations, but in reality, there is an error in irradiating the illumination light to the reflection positions, so In order to improve identification reliability, it is preferable that each reflection position has an area that takes into account the above-mentioned error.
【００２０】[0020]
【表２】[Table 2]
【００２１】図３は本発明が適用された第３の実施例を
示す図２と同様な図である。本実施例では受光素子２６
が、周方向に沿う分割線により２分割され、かつ径方向
に沿う多数の分割線により外側の各部分２６ａ〜２６ｈ
及び内側の各部分２６ｉ〜２６ｐに分割された多分割フ
ォトダイオードからなる。即ち上記各実施例よりも多く
のフォトダイオードにより受光し、各部分２６ａ〜２６
ｐからの出力電圧の分布と正規のカードのホログラム部
に照明光を照射したときの各部分２６ａ〜２６ｐからの
出力電圧の分布とを比較してその分布状態が一致すれば
識別ユニット７によりカード１が正規のカードであるこ
とを識別することから識別信頼性が向上している。それ
以外の構成は第１の実施例と同様である。本発明は上記
実施例に限定されず様々な応用が可能であることは云う
までもなく、例えば上記各実施例では固有の反射方向特
性を有する反射面を反射型ホログラムにより構成したが
、これに限定されず、例えば回折格子により構成しても
良い。FIG. 3 is a diagram similar to FIG. 2 showing a third embodiment to which the present invention is applied. In this embodiment, the light receiving element 26
is divided into two parts by a dividing line along the circumferential direction, and each of the outer parts 26a to 26h is divided by a number of dividing lines along the radial direction.
and a multi-division photodiode divided into inner parts 26i to 26p. That is, the light is received by more photodiodes than in each of the above embodiments, and each part 26a to 26
The distribution of the output voltage from P and the distribution of the output voltage from each part 26a to 26p when the hologram part of a regular card is irradiated with illumination light are compared, and if the distribution states match, the identification unit 7 recognizes the card. 1 is a legitimate card, the identification reliability is improved. The rest of the configuration is the same as the first embodiment. It goes without saying that the present invention is not limited to the above-mentioned embodiments and can be applied in various ways. For example, in each of the above-mentioned embodiments, the reflecting surface having a unique reflection direction characteristic was constructed from a reflection hologram. The structure is not limited to this, and may be configured by, for example, a diffraction grating.
【００２２】[0022]
【発明の効果】以上の説明により明らかなように本発明
によれば、情報記憶カード表面に設けられた固有の反射
方向特性を有する反射面部に向けて照明光を照射し、そ
の反射光を反射面部の反射方向特性に対応する位置に設
けられた複数の受光面部にて受光し、各受光面部にて受
光した光の強度分布と、正規のカードに於ける反射面部
に照明光を照射したときに各受光面部にて受光した光の
強度分布とを比較することによりカードの表面色、また
は汚れの状態に関わらず各受光面部の受光強度分布を測
定比較するのみでリーダライタにセットされたカードが
正規のカードであるか否かを識別できることからカード
の識別信頼性が向上すると共にその構造が複雑化するこ
ともない。以上のことから本発明の効果は大である。Effects of the Invention As is clear from the above description, according to the present invention, illumination light is irradiated toward a reflective surface portion provided on the surface of an information storage card that has a unique reflection direction characteristic, and the reflected light is reflected. Light is received by multiple light-receiving surfaces provided at positions corresponding to the reflection direction characteristics of the surface, and the intensity distribution of the light received by each light-receiving surface and when illumination light is irradiated onto the reflective surface of a regular card. By simply comparing the intensity distribution of the light received by each light-receiving surface, the light intensity distribution of each light-receiving surface is measured and compared, regardless of the surface color or dirtiness of the card. Since it is possible to identify whether a card is a legitimate card or not, the identification reliability of the card is improved and the structure thereof is not complicated. From the above, the effects of the present invention are significant.
【図１】本発明による好適実施例を示す磁気カード及び
カードリーダライタの要部構成斜視図である。FIG. 1 is a perspective view of a main part configuration of a magnetic card and a card reader/writer showing a preferred embodiment of the present invention.
【図２】図１の発光素子及び受光素子のみを拡大して示
す平面図である。FIG. 2 is an enlarged plan view showing only the light emitting element and light receiving element of FIG. 1;
【図３】本発明による第２の実施例を示すホログラム部
のみの拡大平面図である。FIG. 3 is an enlarged plan view of only a hologram section showing a second embodiment of the present invention.
【図４】本発明による第３の実施例を示す図２と同様な
平面図である。FIG. 4 is a plan view similar to FIG. 2 showing a third embodiment of the present invention.
１ カード １ａ 主面 ２ 磁気ストライプ ３ 磁気ヘッド ４ ホログラム部 ５ 発光素子 ６ 受光素子 ６ａ〜６ｈ 部分 ７ 識別ユニット １４ ホログラム部 １４ａ〜１４ｅ 反射位置 ２６ 受光素子 ２６ａ〜２６ｐ 部分 1 Card 1a Main surface 2 Magnetic stripe 3 Magnetic head 4 Hologram section 5 Light emitting element 6 Photo receiving element 6a-6h part 7 Identification unit 14 Hologram section 14a-14e Reflection position 26 Photo receiving element 26a-26p part
Claims (6)
面部を表面に有する情報記憶カードとの間で情報の授受
を行うリーダライタにて、前記カードが正規のカードで
あることを識別するための情報記憶カードの識別方法で
あって、前記反射面部に向けて照明光を照射し、その反
射光を前記反射面部の反射方向特性に対応する位置に設
けられた複数の受光面部にて受光し、前記各受光面部に
て受光した光の強度分布と、正規のカードに於ける反射
面部に照明光を照射したときに各受光面部にて受光した
光の強度分布とを比較することにより前記カードが正規
のカードであることを識別することを特徴とする情報記
憶カードの識別方法。1. Information for identifying that the card is a regular card in a reader/writer that exchanges information with an information storage card having a reflective surface portion with unique reflection direction characteristics on its surface. A method for identifying a storage card, wherein illumination light is irradiated toward the reflective surface section, the reflected light is received by a plurality of light receiving surface sections provided at positions corresponding to the reflection direction characteristics of the reflective surface section, and the method comprises: By comparing the intensity distribution of the light received by each light-receiving surface with the intensity distribution of the light received by each light-receiving surface when the reflective surface of a regular card is irradiated with illumination light, it is possible to determine whether the card is normal. 1. A method for identifying an information storage card, the method comprising identifying that the card is an information storage card.
方向特性を有する反射面部を有する情報記憶カードとの
間で情報の授受を行うリーダライタにて前記カードが正
規のカードであることを識別するための情報記憶カード
の識別方法であって、前記カードの反射面部に於ける２
つ以上の特定の反射位置に向けて照明光を順番に照射し
、その反射光を前記各反射位置の反射方向特性に対応す
る位置に設けられた複数の受光面部にて受光し、前記各
受光面部にて受光した光の強度分布と、正規のカードに
於ける特定の反射位置に照明光を照射したときに各受光
面部にて受光した光の強度分布とを各々比較することに
より前記カードが正規のカードであることを識別するこ
とを特徴とする情報記憶カードの識別方法。2. Information for identifying that the card is a regular card in a reader/writer that exchanges information with an information storage card having a reflective surface portion having reflective direction characteristics that differ depending on the surface position. 2. A method for identifying a storage card, the method comprising:
Illumination light is sequentially irradiated toward two or more specific reflection positions, and the reflected light is received by a plurality of light-receiving surfaces provided at positions corresponding to the reflection direction characteristics of each of the reflection positions, and each of the light reception By comparing the intensity distribution of the light received by the surface and the intensity distribution of the light received by each light-receiving surface when illumination light is irradiated to a specific reflection position on a regular card, the card can be determined. A method for identifying an information storage card, characterized by identifying that the card is a genuine card.
からなることを特徴とする請求項１若しくは請求項２に
記載の情報記憶カードの識別方法。3. The method for identifying an information storage card according to claim 1, wherein the reflective surface portion is made of a reflective hologram.
面部を表面に有する情報記憶カードとの間で情報の授受
を行うリーダライタにて前記カードが正規のカードであ
ることを識別するための情報記憶カードの識別構造であ
って、前記反射面部に向けて照明光を照射する手段と、
前記前記反射面部からの反射光をその反射方向特性に対
応する位置に設けられた複数の受光面部にて受光する手
段と、正規のカードの反射面部に照明光を照射したとき
に各受光面部にて受光した光の強度分布を記憶する手段
と、前記カードの反射面部に照明光を照射したときの各
受光面部の受光強度分布と前記記憶された正規のカード
に於ける受光強度分布とを比較することにより前記カー
ドが正規のカードであることを識別する手段とを有する
ことを特徴とする情報記憶カードの識別構造。4. Information storage for identifying that the card is a regular card in a reader/writer that exchanges information with an information storage card having a reflective surface portion having unique reflection direction characteristics on its surface. A card identification structure, comprising means for irradiating illumination light toward the reflective surface portion;
means for receiving the reflected light from the reflective surface section at a plurality of light receiving surface sections provided at positions corresponding to the reflection direction characteristics of the reflective surface section; means for storing the intensity distribution of light received by the card; and comparing the received light intensity distribution of each light receiving surface section when illumination light is irradiated onto the reflective surface section of the card with the stored light receiving intensity distribution of the regular card. 1. An identification structure for an information storage card, comprising means for identifying that the card is a regular card by doing so.
方向特性を有する反射面部を有する情報記憶カードとの
間で情報の授受を行うリーダライタにて前記カードが正
規のカードであることを識別するための情報記憶カード
の識別構造であって、前記カードの反射面部に於ける２
つ以上の特定の反射位置に向けて照明光を順番に照射す
る手段と、前記各反射位置からの反射光をその反射方向
特性に対応する位置に設けられた複数の受光面部にて受
光する手段と、正規のカードの各特定の反射位置に照明
光を照射したときに前記各受光面部にて受光した光の強
度分布を記憶する手段と、前記各反射位置に照明光を照
射したときの各受光面部の受光強度分布と、前記記憶さ
れた正規のカードの対応する反射位置に於ける受光強度
分布とを各々比較することにより前記カードが正規のカ
ードであることを識別する手段とを有することを特徴と
する情報記憶カードの識別構造。5. Information for identifying that the card is a regular card in a reader/writer that exchanges information with an information storage card having a reflective surface portion having reflective direction characteristics that differ depending on the surface position. An identification structure of a storage card, comprising: 2
means for sequentially irradiating illumination light toward two or more specific reflection positions, and means for receiving reflected light from each of the reflection positions at a plurality of light-receiving surfaces provided at positions corresponding to the reflection direction characteristics. and a means for storing the intensity distribution of the light received by each of the light-receiving surface sections when illumination light is irradiated to each specific reflection position of the regular card; and means for identifying that the card is a regular card by comparing the received light intensity distribution of the light receiving surface portion and the received light intensity distribution at the corresponding reflection position of the stored regular card. An identification structure of an information storage card characterized by:
からなることを特徴とする請求項４若しくは請求項５に
記載の情報記憶カードの識別構造。6. The identification structure for an information storage card according to claim 4, wherein the reflective surface portion is made of a reflective hologram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3115408A JPH0795341B2 (en) | 1991-04-19 | 1991-04-19 | Information storage card identification method and identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3115408A JPH0795341B2 (en) | 1991-04-19 | 1991-04-19 | Information storage card identification method and identification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04320594A true JPH04320594A (en) | 1992-11-11 |
| JPH0795341B2 JPH0795341B2 (en) | 1995-10-11 |
Family
ID=14661833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3115408A Expired - Lifetime JPH0795341B2 (en) | 1991-04-19 | 1991-04-19 | Information storage card identification method and identification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795341B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499659B1 (en) * | 1998-04-09 | 2002-12-31 | Dcard, Inc. | Pulse shaping for a transformer coupled read/write recording device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223232A (en) * | 1975-08-14 | 1977-02-22 | Landis & Gyr Ag | Device for storing and reading genuine information |
| JPH0371383A (en) * | 1989-08-11 | 1991-03-27 | Nhk Spring Co Ltd | Information storage card and structure and method for identifying same card |
-
1991
- 1991-04-19 JP JP3115408A patent/JPH0795341B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223232A (en) * | 1975-08-14 | 1977-02-22 | Landis & Gyr Ag | Device for storing and reading genuine information |
| JPH0371383A (en) * | 1989-08-11 | 1991-03-27 | Nhk Spring Co Ltd | Information storage card and structure and method for identifying same card |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499659B1 (en) * | 1998-04-09 | 2002-12-31 | Dcard, Inc. | Pulse shaping for a transformer coupled read/write recording device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0795341B2 (en) | 1995-10-11 |
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