JPH03247496A - Data memory apparatus and data reading apparatus - Google Patents

Data memory apparatus and data reading apparatus

Info

Publication number
JPH03247496A
JPH03247496A JP2415029A JP41502990A JPH03247496A JP H03247496 A JPH03247496 A JP H03247496A JP 2415029 A JP2415029 A JP 2415029A JP 41502990 A JP41502990 A JP 41502990A JP H03247496 A JPH03247496 A JP H03247496A
Authority
JP
Japan
Prior art keywords
shape memory
card
shape
substrate
storage device
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.)
Pending
Application number
JP2415029A
Other languages
Japanese (ja)
Inventor
Masanao Nakagawa
中川 政直
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.)
Omron Corp
Original Assignee
Omron Corp
Omron Tateisi Electronics Co
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
Priority to JP1987002850U priority Critical patent/JPS63112070U/ja
Application filed by Omron Corp, Omron Tateisi Electronics Co filed Critical Omron Corp
Priority to JP2415029A priority patent/JPH03247496A/en
Publication of JPH03247496A publication Critical patent/JPH03247496A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To read data regardless of the change of card environment such as card temp. by arranging a plurality of shape memory chips composed of a shape memory substance generating the change of an outer shape when placed at predetermined temp. to a substrate. CONSTITUTION:A magnetic stripe 2 is bonded to one surface of a card 1 on one side thereof and an elongated groove 3 is provided to the same surface of the card 1 on the other side thereof and shape memory chips 4 composed of a shape memory alloy are arranged to the groove 3 at a predetermined interval in a row. Each of the shape memory chips 4 is bent in a zigzag state and received in the groove 3 at room temp. not to protrude above the surface of the card. When the whole of the card or the chips 4 is heated to specific temp. or higher, the shape memory chips extend and protrude from the surface of the card to becomes deformed pieces 4a. Therefore, by detecting the presence of the chips 4 (4a) by a photoelectric sensor having a light path at a predetermined level on the surface of the card, the data expressed by the pieces can be read.

Description

【発明の詳細な説明】[Detailed description of the invention]

[0001] [0001]

【産業上の利用分野】[Industrial application field]

この発明は、複数個の形状記憶物質素片を配置した情報
記憶装置およびこの情報記憶装置のための情報読取装置
に関する。 [0002]
The present invention relates to an information storage device in which a plurality of shape memory material pieces are arranged, and an information reading device for this information storage device. [0002]

【従来の技術】[Conventional technology]

カードは種々の分野において広く用いられるようになっ
てきた。現今までに開発されまたは使用されているカー
ドには、あけられた孔の位置、数で情報を表わす穿孔カ
ード、磁気ストライプまたは磁気面を有し情報が磁気的
に記録された磁気カード、メモリおよびCPUを備え、
データの書込み、読出しが可能なICカード(またはC
PUカード) 形成されたピットの位置、数、形状で情
報を表わす非接触読取りが可能な光メモリ・カード(ま
たはレーザ・カード)等がある。 [0003]
Cards have become widely used in various fields. Cards that have been developed or are currently in use include perforated cards that represent information by the position and number of holes punched, magnetic cards that have a magnetic stripe or magnetic surface on which information is magnetically recorded, and memory and Equipped with a CPU,
An IC card (or C
PU card) There are optical memory cards (or laser cards) that can be read without contact and express information by the position, number, and shape of formed pits. [0003]

【発明が解決しようとする課題】[Problem to be solved by the invention]

これらのカードは温度等のカード環境の変化にかかわら
ず情報等の読取りが可能である。 [0004] この発明は、カード環境、とくに特定温度下に置かれた
ときのみ特定の情報の読取りが可能となる新規なカード
、すなわち形状記憶合金カードを含む情報記憶装置、お
よびこの情報記憶装置からの情報の読取りのための情報
読取装置を提供することを目的とする。 [0005]
These cards can read information, etc. regardless of changes in the card environment such as temperature. [0004] The present invention provides an information storage device including a novel card, that is, a shape memory alloy card, which allows reading of specific information only when placed under a card environment, particularly a specific temperature, and an information storage device including a shape memory alloy card. An object of the present invention is to provide an information reading device for reading information. [0005]

【課題を解決するための手段】[Means to solve the problem]

この発明による情報記憶装置は、基板に、所定温度下に
置かれたときに外形の変化を生じる形状記憶物質からな
る形状記憶素片が複数個配置されているものである。 [0006] 好ましくは基板はカード状基板、形状記憶物質は形状記
憶合金であり、上記情報記憶装置は形状記憶合金カード
として実現される。 [0007] 形状記憶素片と同一形状の形状記憶物質以外の物質から
なる素片を基板に配置しておいたり、形状記憶素片を不
可視状態に基板に設けるようにすると一層好ましい。 [0008] この発明による情報読取装置は、所定温度下に置かれた
ときに外形の変化を生じる形状記憶物質からなる形状記
憶素片が基板に複数個配置されている情報記憶装置の各
形状記憶素片の形状が所定の条件を満足するか否かを検
出するセンサを有するものである。 [0009] 情報読取り用のセンサとしては光電センサ、磁気センサ
(ホール素子、磁気ヘッドなど) 近接スイッチ等を用
いることができよう。 [00101
In the information storage device according to the present invention, a plurality of shape memory elements made of a shape memory material whose external shape changes when placed under a predetermined temperature are arranged on a substrate. [0006] Preferably, the substrate is a card-like substrate, the shape memory material is a shape memory alloy, and the information storage device is realized as a shape memory alloy card. [0007] It is more preferable that an elemental piece made of a substance other than a shape-memory substance having the same shape as the shape-memory element is placed on the substrate, or that the shape-memory element is provided on the substrate in an invisible state. [0008] The information reading device according to the present invention has each shape memory element of an information storage device in which a plurality of shape memory elements made of a shape memory material whose external shape changes when placed under a predetermined temperature are arranged on a substrate. It has a sensor that detects whether the shape of the elemental piece satisfies predetermined conditions. [0009] As a sensor for reading information, a photoelectric sensor, a magnetic sensor (Hall element, magnetic head, etc.), a proximity switch, etc. may be used. [00101

【作用] 上記の形状記憶素片には、特定温度下に置いたときにあ
る規定以上の(センサによって検知しうる)外形変化を
生じさせるような形状を記憶させておく。このことによ
り、常温では形状記憶素片は上記の規定以下の形状を保
持しているのでこの素片をセンサによって読取っても必
要な情報は得られない。このカードを上記の特定温度に
加熱して上記素片に形状変化が生じたときのみ所定の情
報の読取りが可能となる。 [0011] 【発明の効果】 以上のようにこの発明による情報記憶装置およびその読
取装置は特定温度下でのみ所定の動作をすることが期待
されるから、解錠用、個人照合用等の情報記憶媒体の偽
造を防止することが要求される分野で特に有用である。 [0012]
[Operation] The above-mentioned shape memory element is stored with a shape that causes a change in external shape exceeding a certain standard (which can be detected by a sensor) when placed under a specific temperature. As a result, at room temperature, the shape memory element retains a shape that is less than the above-mentioned specification, so even if this element is read by a sensor, the necessary information cannot be obtained. Predetermined information can be read only when the card is heated to the above-mentioned specific temperature and the shape of the element changes. [0011] [Effects of the Invention] As described above, since the information storage device and its reading device according to the present invention are expected to operate in a specified manner only under a specific temperature, information such as unlocking, personal verification, etc. It is particularly useful in fields where it is required to prevent counterfeiting of storage media. [0012]

【実施例】【Example】

図1から図4はこの発明の実施例を示している。図1は
平面図、図2は図1のI I−I I線にそう断面図で
あるがカードの厚さが誇張して描かれている。カード厚
さは1 mm以下が好ましい。 [0013] 図3および図4は図1のI I I−I I I線にそ
う断面図であり、図3は常温での状態を、図4は特定温
度以上に加熱された状態をそれぞれ示している。 [0014] カード1の一面の一側には磁気ストライプ2が貼付され
ている。カードの同じ面の他側には細長い溝3があけら
れており、ここに形状記憶合金からなる形状記憶素片4
が所定間隔で一列に配列されている。これらの素片4は
カード1内に埋設された熱伝導性の良好な取付板5に固
定、たとえば接着されている。 [0015] 形状記憶素片4はジグザグに折曲されており、常温下で
は図3に示すように溝3内に収まりカード表面上には突
出しない。 [0016] カード全体または素片4が特定温度以上に加熱されると
、図4に示すように形状記憶素片は伸張し、カード1の
表面から突出する。この変形した素片を4aで示す。素
片4には4aで示すような形状が記憶されている訳であ
る。 [0017] したがって、カード1の表面上の所定レベル(読取りレ
ベル)に光路をもつ光電センサで素片4 (4a)の有
無を検知することにより、素片によって表現された情報
を読取ることができる。もちろん、光電センサによる読
取りは図1に「読取り方向」の矢印で示すように各素片
4ごとに行なう。 [0018] 形状記憶素片の材料としては、カード・ベースに使用す
るプラスチック材に応じて適宜選択されるが、オーステ
ナイト温度(A S )が78℃、マルテンサイト温度
(M S )が60℃程度のTi−5ONiにテノール
)が好適であろう。 [0019] また形状記憶合金は一方向性のものでも二方向性のもの
でもどちらでもよい。 一方向性のものの場合には、常温に戻しても素片4aは
図4に示す伸張した形のままに保持されるので、この素
子4aが溝3内に戻るように外圧を加える必要がある。 二方向性のものであれば、素片4は常温になれば図3に
示す元の形状に戻る。 [0020] 図1では形状記憶素片4は一列状に一定間隔で配列され
ている力板二列以上にわたって配列してもよいし、素片
4の位置によってデータを表わす場合には一定間隔で配
列する必要はなく、穿孔カードの孔のように適当な位置
に配置する。 [0021] さらに、常温下において外観だけでは素片4によって表
わされる情報を知ることができないように、いくつかの
形状記憶素片4を全く同形の通常の金属片で置きかえる
ようにすることが好ましい。このようにすると、特定温
度に加熱したときに、形状記憶素片のみが変形するから
、この変形した素片の位置や数によって情報の読取りが
可能となる。 [0022] この形状記憶合金カードはたとえば次のようにして用い
られる。 [0023] 磁気ストライプ2から読取った磁気データを形状記憶素
片の変形によって表わされるデータを用いて加工する。 [0024] まず常温で形状記憶素片によって表わされるデータを読
取り、次にカードを加熱して特定温度下で変形した形状
記憶素片によって表わされるデータを読取る。 両データを比較して差があるかどうかを検査する。 [0025] 記憶形状に変形する温度が異なる複数種類の形状記憶素
片を組合せてカードに設けておき、1の温度または2以
上の温度における素片の変形を読取る。 [0026] 変形量の異なる形状記憶素片を組合せてカードに設けて
おき、異なる2以上のレベルで読取りを行なう。 [0027] 図5は他の例を示している。ここでは形状記憶素片14
は屈曲された形でカード1の表面上に設けられ、その基
端において固定されている。カード1の表面にはカバー
が設けられる。カード1が特定温度に加熱されると素片
14aはまっすぐな形となる。 [0028] 図6から図8はさらに他の例を示している。カード1内
に空洞13が設けられている。この空洞13内にジグザ
グ形状の素片4が配列されている。特定温度に加熱され
ると素片4は図8に示すように空洞13内でカードの面
方向に伸張する。 [0029] これらの例は、素片14,4が外から見えないので情報
が盗まれることが防止される。このような素片14,4
の変形は、カード1を所定位置に位置決めし、変形後の
素片14a、4aを検知しうる位置に配置された金属検
知センサによって読取ることができよう。また、元の形
状に戻すための外力を加えることができないので、形状
記憶素片は二方向性の形状記憶合金によってつくられよ
う。
1 to 4 show embodiments of the invention. FIG. 1 is a plan view, and FIG. 2 is a sectional view taken along line III--I in FIG. 1, but the thickness of the card is exaggerated. The card thickness is preferably 1 mm or less. [0013] FIGS. 3 and 4 are cross-sectional views taken along the III-III line in FIG. 1, with FIG. 3 showing the state at room temperature, and FIG. 4 showing the state heated to a specific temperature or higher. ing. [0014] A magnetic stripe 2 is pasted on one side of one surface of the card 1. On the other side of the same side of the card, a long and narrow groove 3 is drilled, and a shape memory element piece 4 made of a shape memory alloy is formed in this slot.
are arranged in a line at predetermined intervals. These pieces 4 are fixed, for example, glued, to a mounting plate 5 buried in the card 1 and having good thermal conductivity. [0015] The shape memory element piece 4 is bent in a zigzag pattern, and at room temperature it fits within the groove 3 as shown in FIG. 3 and does not protrude above the card surface. [0016] When the entire card or the elemental piece 4 is heated to a certain temperature or higher, the shape memory elemental piece expands and protrudes from the surface of the card 1, as shown in FIG. This deformed elemental piece is shown as 4a. This means that the elemental piece 4 stores a shape as shown by 4a. [0017] Therefore, by detecting the presence or absence of the elemental piece 4 (4a) with a photoelectric sensor having an optical path at a predetermined level (reading level) on the surface of the card 1, the information expressed by the elemental piece can be read. . Of course, reading by the photoelectric sensor is performed for each elemental piece 4 as shown by the arrow in the "reading direction" in FIG. [0018] The material of the shape memory element is appropriately selected depending on the plastic material used for the card base, but the austenite temperature (A S ) is about 78°C and the martensite temperature (M S ) is about 60°C. Tenor) would be suitable for Ti-5ONi. [0019] Further, the shape memory alloy may be either unidirectional or bidirectional. In the case of a unidirectional one, the element 4a remains in the expanded shape shown in FIG. 4 even after returning to room temperature, so it is necessary to apply external pressure so that the element 4a returns to the groove 3. . If it is bidirectional, the elemental piece 4 returns to its original shape as shown in FIG. 3 when the temperature reaches room temperature. [0020] In FIG. 1, the shape memory elements 4 may be arranged in two or more rows of force plates arranged in a line at regular intervals, or when representing data by the position of the element pieces 4, the shape memory elements 4 may be arranged at regular intervals. There is no need to arrange them, just place them at appropriate positions like the holes in a punched card. [0021] Further, it is preferable to replace some of the shape memory elements 4 with ordinary metal pieces of exactly the same shape so that the information represented by the element pieces 4 cannot be known from the appearance alone at room temperature. . In this way, only the shape memory elemental pieces are deformed when heated to a specific temperature, so that information can be read based on the position and number of the deformed elemental pieces. [0022] This shape memory alloy card is used, for example, in the following manner. [0023] The magnetic data read from the magnetic stripe 2 is processed using data represented by the deformation of the shape memory element. [0024] First, the data represented by the shape memory element is read at room temperature, and then the data represented by the shape memory element deformed at a specific temperature by heating the card is read. Compare both data to see if there is a difference. [0025] A card is provided with a combination of a plurality of types of shape memory elements that transform into memorized shapes at different temperatures, and the deformation of the element pieces at one temperature or two or more temperatures is read. [0026] Shape memory elements having different amounts of deformation are combined and provided on a card, and reading is performed at two or more different levels. [0027] FIG. 5 shows another example. Here, shape memory element 14
is provided in a bent shape on the surface of the card 1 and is fixed at its base end. A cover is provided on the surface of the card 1. When the card 1 is heated to a specific temperature, the piece 14a assumes a straight shape. [0028] FIGS. 6 to 8 show still other examples. A cavity 13 is provided within the card 1. Zigzag-shaped pieces 4 are arranged within this cavity 13. When heated to a specific temperature, the elemental piece 4 expands in the direction of the surface of the card within the cavity 13, as shown in FIG. [0029] In these examples, the pieces 14 and 4 are not visible from the outside, so information is prevented from being stolen. Such a piece 14,4
The deformation can be read by positioning the card 1 at a predetermined position and using a metal detection sensor placed at a position where the deformed pieces 14a, 4a can be detected. Also, since no external force can be applied to restore the shape to its original shape, the shape memory element may be made of a bidirectional shape memory alloy.

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

【図1】 この発明の実施例を示しており、カードの平面図である
FIG. 1 shows an embodiment of the invention and is a plan view of a card.

【図2】 この発明の実施例を示しており、図1のII−II線に
そう断面図である。
2 shows an embodiment of the invention, and is a sectional view taken along line II-II in FIG. 1. FIG.

【図3】 この発明の実施例を示しており、図1のIII−III
線にそう断面図であって、常温下における状態を示して
いる。
[Fig. 3] Shows an embodiment of the present invention, and shows III-III in Fig. 1.
It is a sectional view along the line, showing the state at room temperature.

【図4】 この発明の実施例を示しており、図1のIII−III
線にそう断面図であって、特定温度に加熱した状態を示
している。
FIG. 4 shows an embodiment of the present invention, and shows III-III in FIG.
It is a cross-sectional view along the line, showing a state heated to a specific temperature.

【図5】 変形例を示すものであって、カバーを除去した状態の平
面図である。
FIG. 5 is a plan view showing a modified example with the cover removed.

【図6】 さらに他の例を示すものであり、一部切欠き平面図であ
る。
FIG. 6 shows still another example, and is a partially cutaway plan view.

【図7】 さらに他の例を示すものであり、図6のVII−VII
線にそう断面図であり常温下における状態図を示してい
る。
[FIG. 7] Still another example is shown, and VII-VII in FIG.
It is a sectional view taken along the line, and shows a state diagram at room temperature.

【図8】 さらに他の例を示すものであり、図6のVII−VII
線にそう断面図であり特定温度下における状態を示して
いる。
[FIG. 8] Still another example is shown, and VII-VII in FIG.
It is a cross-sectional view along the line and shows the state under a specific temperature.

【符号の説明】[Explanation of symbols]

カード 4.14 形状記憶素片(変形前) 4a。 4a 変形後の形状記憶素片 card 4.14 Shape memory element (before deformation) 4a. 4a Shape memory element after deformation

【図1】[Figure 1]

【図2】[Figure 2]

【図3】[Figure 3]

【図4】[Figure 4]

【図5】[Figure 5]

【図6】[Figure 6]

【図7】[Figure 7]

【図8】[Figure 8]

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】基板に、所定温度下に置かれたときに外形
の変化を生じる形状記憶物質からなる形状記憶素片が複
数個配置されている情報記憶装置。
1. An information storage device in which a plurality of shape memory elements made of a shape memory material whose external shape changes when placed under a predetermined temperature are arranged on a substrate.
【請求項2】上記基板がカード基板である特許請求の範
囲第1項記載の情報記憶装置。
2. The information storage device according to claim 1, wherein the substrate is a card substrate.
【請求項3】上記形状記憶物質が形状記憶合金である特
許請求の範囲第1項記載の情報記憶装置。
3. The information storage device according to claim 1, wherein the shape memory material is a shape memory alloy.
【請求項4】形状記憶素片と同一形状の形状記憶物質以
外の物質からなる素片が基板に配置されている特許請求
の範囲第1項記載の情報記憶装置。
4. The information storage device according to claim 1, wherein an elemental piece made of a substance other than a shape-memory material and having the same shape as the shape-memory element is disposed on the substrate.
【請求項5】形状記憶素片が不可視状態に基板に設けら
れている特許請求の範囲第1項記載の情報記憶装置。
5. The information storage device according to claim 1, wherein the shape memory element is provided on the substrate in an invisible state.
【請求項6】所定温度下に置かれたときに外形の変化を
生じる形状記憶物質からなる形状記憶素片が基板に複数
個配置されている情報記憶装置の各形状記憶素片の形状
が所定の条件を満足するか否かを検出するセンサを有す
る情報読取装置。
6. An information storage device in which a plurality of shape memory elements made of a shape memory material whose external shape changes when placed under a predetermined temperature are arranged on a substrate, each shape memory element having a predetermined shape. An information reading device that includes a sensor that detects whether the following conditions are satisfied.
【請求項7】前記センサが光電センサである特許請求の
範囲第6項記載の情報読取装置。
7. The information reading device according to claim 6, wherein the sensor is a photoelectric sensor.
【請求項8】前記センサが金属検知センサである特許請
求の範囲第6項記載の情報読取装置。
8. The information reading device according to claim 6, wherein the sensor is a metal detection sensor.
JP2415029A 1987-01-14 1990-12-27 Data memory apparatus and data reading apparatus Pending JPH03247496A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1987002850U JPS63112070U (en) 1987-01-14 1987-01-14
JP2415029A JPH03247496A (en) 1987-01-14 1990-12-27 Data memory apparatus and data reading apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1987002850U JPS63112070U (en) 1987-01-14 1987-01-14
JP2415029A JPH03247496A (en) 1987-01-14 1990-12-27 Data memory apparatus and data reading apparatus

Publications (1)

Publication Number Publication Date
JPH03247496A true JPH03247496A (en) 1991-11-05

Family

ID=61023500

Family Applications (2)

Application Number Title Priority Date Filing Date
JP1987002850U Pending JPS63112070U (en) 1987-01-14 1987-01-14
JP2415029A Pending JPH03247496A (en) 1987-01-14 1990-12-27 Data memory apparatus and data reading apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP1987002850U Pending JPS63112070U (en) 1987-01-14 1987-01-14

Country Status (1)

Country Link
JP (2) JPS63112070U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05229291A (en) * 1992-02-21 1993-09-07 Nec Data Terminal Ltd Memory card and memory card discriminating device
WO1997044780A1 (en) * 1996-05-20 1997-11-27 International Business Machines Corporation Shape memory alloy recording medium, storage devices based thereon, and method for using these storage devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5277531A (en) * 1975-12-23 1977-06-30 Mitsubishi Electric Corp Check card
JPS5823335A (en) * 1981-08-04 1983-02-12 Mitsubishi Electric Corp Recording element

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5277531A (en) * 1975-12-23 1977-06-30 Mitsubishi Electric Corp Check card
JPS5823335A (en) * 1981-08-04 1983-02-12 Mitsubishi Electric Corp Recording element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05229291A (en) * 1992-02-21 1993-09-07 Nec Data Terminal Ltd Memory card and memory card discriminating device
WO1997044780A1 (en) * 1996-05-20 1997-11-27 International Business Machines Corporation Shape memory alloy recording medium, storage devices based thereon, and method for using these storage devices

Also Published As

Publication number Publication date
JPS63112070U (en) 1988-07-19

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