JP2001155121A - Non-contact ic card reader-writer - Google Patents
Non-contact ic card reader-writerInfo
- Publication number
- JP2001155121A JP2001155121A JP34072499A JP34072499A JP2001155121A JP 2001155121 A JP2001155121 A JP 2001155121A JP 34072499 A JP34072499 A JP 34072499A JP 34072499 A JP34072499 A JP 34072499A JP 2001155121 A JP2001155121 A JP 2001155121A
- Authority
- JP
- Japan
- Prior art keywords
- card
- contact
- communication
- antenna coil
- permanent magnet
- 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
Links
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、電磁誘導型の非接
触ICカードシステムに用いられる、読み取り書き込み
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a read / write device used for an electromagnetic induction type non-contact IC card system.
【0002】[0002]
【従来の技術】ICメモリを利用したICカードは、従
来の磁気カードに比べ記憶できる情報量やセキュリティ
の高さに優れ、会員カードやネットワークやパソコンに
アクセスするための鍵として、また海外ではテレホンカ
ードなど、各方面で使われている。また、近年、非接触
でデータの読み書きができるICカードシステムが普及
してきており、なかでも交流磁界を利用した電磁誘導型
システムでは、カードの動作に必要な電力を読み取り書
き込み装置(リーダ・ライタ、以下R/Wと記す。)か
ら供給可能で、カードに電池を搭載しないシステムが構
成できるため、その普及はめざましい。現在国際標準化
(ISO14443)の作業も進められており、199
9年春には、ICテレホンカードとしてのサービスも開
始されている。このように電磁誘導型の非接触ICカー
ドシステムが普及するにつれ、これら非接触ICカード
を会員カードに用いる事も考えられてきており、パソコ
ンからネットワークへログインするための鍵として使わ
れることも考えられる。また家庭内で非接触ICカード
を使う事に向けた、ノートパソコンに組み込むPCカー
ド型のR/Wも考えられてきている(特願平10−20
8714)。2. Description of the Related Art An IC card using an IC memory is superior in the amount of information that can be stored and the security level as compared with a conventional magnetic card, and is used as a key for accessing a membership card, a network or a personal computer. It is used in various fields such as cards. In recent years, IC card systems that can read and write data in a non-contact manner have become widespread. In particular, in an electromagnetic induction type system using an AC magnetic field, power required for card operation is read and written by a reader / writer (reader / writer, R / W), and a system that does not have a battery mounted on the card can be configured. Currently, work on international standardization (ISO14443) is underway.
In the spring of 1997, the service as an IC telephone card was started. With the widespread use of electromagnetic induction type non-contact IC card systems, it has been considered that these non-contact IC cards are used as membership cards, and may be used as keys for logging in to a network from a personal computer. Can be Also, a PC card type R / W incorporated in a notebook personal computer for using a non-contact IC card at home has been considered (Japanese Patent Application No. 10-20 / 1990).
8714).
【0003】非接触式ICカードは、文字通りR/Wと
接触することなく動作するため、利用者にとって便利な
反面、R/Wから見た場合に、カードの存在を確認する
には、常にカードを認識するための信号を出し続けてい
るか、或いはカードをR/Wの付近に近づけてから、カ
ード所有者が何等かの操作を行ってR/Wを動作させる
必要があった。しかしながら、常に信号を送信し続ける
には、R/Wの消費電力が大きくなり、ノートパソコン
や携帯端末などに組み込むには問題であった。また、カ
ードの所有者が何らかの操作をする場合では、折角非接
触で動作するカードの利便性を損なっていた。このよう
に、小さな消費電力で、かつ利用者の手を煩わす事な
く、非接触ICカードを検出する仕組みが、R/Wに求
められていた。[0003] Non-contact IC cards operate literally without contacting the R / W, so they are convenient for users. However, when viewed from the R / W, it is always necessary to check the presence of the card. It is necessary for the card owner to perform some operation to operate the R / W after the signal for recognizing the ID is continuously output or the card is brought close to the vicinity of the R / W. However, the power consumption of the R / W increases in order to continuously transmit the signal, and there is a problem in incorporating the signal into a notebook personal computer, a portable terminal, or the like. Further, in the case where the card owner performs some operation, the convenience of the card operating in a non-contact manner is impaired. As described above, the R / W is required to have a mechanism for detecting a non-contact IC card with low power consumption and without any trouble of the user.
【0004】[0004]
【発明が解決しようとする課題】本発明の目的は、上記
のように従来問題となっていたR/Wと非接触で動作す
る電磁誘導型のICカード用R/Wにおける、非動作時
の不要消費電力の節減を行い、動作開始時には非接触I
Cカードの接近または存在を検出する手段を備え、これ
によりICカードを検出することにより、R/Wを自動
的に動作開始状態に設定することが出来るようなR/W
を提供する事にある。SUMMARY OF THE INVENTION It is an object of the present invention to provide an electromagnetic induction type R / W for an IC card which operates in a non-contact manner with the R / W which has been a conventional problem as described above. Unnecessary power consumption is reduced, and non-contact I
A means for detecting the approach or presence of the C card, whereby the R / W can be automatically set to the operation start state by detecting the IC card.
It is to provide.
【0005】[0005]
【課題を解決するための手段】本発明では、上記目的を
達成するために、電磁誘導型非接触ICカード及びその
R/Wで構成された非接触ICカードシステムにおい
て、この非接触ICカードとR/Wの間で通信させるた
めに、動作開始に際して利用者はこのICカードをR/
Wへ近づける動作を行う事に着目し、このICカード近
接を検出してR/Wを動作状態に設定する方法とした。
このため、ICカードとR/Wとの通信を行うためのア
ンテナ用コイルと、この通信用の送受信回路と、これら
を制御する制御回路とを有することを基本構成とする非
接触ICカードシステムにおいて、ICカードの接近を
検出するための永久磁石を従来のR/Wのアンテナ内部
に組み込む構成とした。According to the present invention, in order to achieve the above object, an electromagnetic induction type non-contact IC card and a non-contact IC card system composed of the R / W of the same are used in the non-contact IC card. To start communication between the R / W, at the start of operation, the user inserts this IC card into the R / W.
Paying attention to performing an operation of approaching W, a method of detecting the proximity of the IC card and setting the R / W to an operation state is adopted.
For this reason, in a non-contact IC card system having a basic configuration including an antenna coil for performing communication between the IC card and the R / W, a transmitting / receiving circuit for communication, and a control circuit for controlling these circuits. A permanent magnet for detecting the approach of an IC card is incorporated in a conventional R / W antenna.
【0006】以上の構成において、本発明においては、
未通信状態にある非動作時には通信のためのキャリアの
発信を停止し、上記のICカードが接近したことを検出
することによりR/Wは通信状態となり、キャリアを発
信開始する構成としている。また、本システムが動作状
態にあるとき、R/W側から予め定められた時間間隔で
通信相手であるICカードを確認する信号を送信し、こ
れに対する応答がなくなった時点で通信用キャリア及び
信号の送信を停止する構成としている。In the above configuration, in the present invention,
At the time of non-operation in the non-communication state, transmission of the carrier for communication is stopped, and the R / W enters the communication state by detecting that the above-mentioned IC card approaches, and transmission of the carrier is started. Also, when the system is in an operating state, a signal for confirming an IC card as a communication partner is transmitted from the R / W side at a predetermined time interval, and when there is no response thereto, a communication carrier and a signal are transmitted. Transmission is stopped.
【0007】[0007]
【作用】永久磁石の作る時間変化のない直流的な磁束に
対して、ICカードを近づける動作によって、この直流
磁束をICカードのアンテナ用コイルが横切ることにな
り、電磁誘導の法則に基づいてカード側アンテナ用コイ
ルに誘導電流が発生する。更に、この誘導電流はレンツ
の法則により、直流磁界を打ち消す方向の磁束を発生さ
せ、R/W側でこのICカード側からの磁束を検出する
ことにより、カードの存在をR/Wに検出させるもので
ある。The operation of bringing the IC card close to the DC magnetic flux that does not change with time created by the permanent magnet causes the antenna coil of the IC card to cross this DC magnetic flux. An induced current is generated in the side antenna coil. Further, the induced current generates a magnetic flux in a direction to cancel the DC magnetic field according to Lenz's law, and the R / W side detects the magnetic flux from the IC card side so that the R / W detects the presence of the card. Things.
【0008】[0008]
【発明の実施の形態】本発明によるR/Wに搭載される
電磁誘導型非接触ICカードを検出する仕組みを、図1
を用いて説明する。図において、101はR/Wのアン
テナコイル、102は永久磁石、103は非接触ICカ
ードのアンテナコイルである。R/Wのアンテナコイル
101内部に永久磁石102を組み込むことで、R/W
のアンテナコイル内に、時間変化をしない静的な直流磁
界を発生する磁束B1が形成される。ここで、R/Wに
非接触ICカードを近づけると(A図)、この非接触I
Cカードのアンテナコイル103が永久磁石102の作
る直流的な磁束B1を横切ることで、カード内部のアン
テナコイルに誘導電流I1が発生し(B図)、これによ
り非接触ICカードからR/Wの永久磁石102が生成
する磁束B1を打ち消す向きの磁束B2が生成される
(C図)。非接触ICカードのアンテナコイル103が
生成する磁束B2は、R/Wのアンテナコイル101を
貫くため、R/Wのアンテナコイル101内に時間変化
する磁束B2が横切る事になり、R/Wのアンテナコイ
ル101に誘導電流I2が流れることになる(D図)。
従って、R/Wのアンテナコイル101に流れる誘導電
流I2をR/Wが検出すれば、認識されていなかった非
接触ICカードがR/Wとの通信エリア内に挿入された
事を検知することが可能になる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mechanism for detecting an electromagnetic induction type non-contact IC card mounted on an R / W according to the present invention is shown in FIG.
This will be described with reference to FIG. In the figure, 101 is an R / W antenna coil, 102 is a permanent magnet, and 103 is a non-contact IC card antenna coil. By incorporating the permanent magnet 102 inside the R / W antenna coil 101, the R / W
A magnetic flux B1 that generates a static DC magnetic field that does not change with time is formed in the antenna coil of FIG. Here, when the non-contact IC card is brought close to the R / W (FIG. A),
When the antenna coil 103 of the C card crosses the DC magnetic flux B1 generated by the permanent magnet 102, an induced current I1 is generated in the antenna coil inside the card (FIG. B). A magnetic flux B2 in a direction to cancel the magnetic flux B1 generated by the permanent magnet 102 is generated (FIG. C). Since the magnetic flux B2 generated by the antenna coil 103 of the non-contact IC card passes through the R / W antenna coil 101, the time-varying magnetic flux B2 crosses the R / W antenna coil 101, and the R / W The induced current I2 flows through the antenna coil 101 (D diagram).
Therefore, if the R / W detects the induced current I2 flowing through the R / W antenna coil 101, it is possible to detect that an unrecognized non-contact IC card has been inserted into the communication area with the R / W. Becomes possible.
【0009】図2に、本発明の電磁誘導型非接触ICカ
ード用R/Wの実施例として、R/Wの機能ブロック図
を示す。図において201はR/W本体、202はパー
ソナルコンピュータ等の端末、203は接続ケーブル、
211はR/Wのアンテナコイル、212は永久磁石、
213は誘導電流検出回路、214は送受信回路、21
5は制御回路、216は端末とのインタフェース回路、
217は電源回路である。本実施の形態では、R/Wは
パソコン等の端末と接続ケーブル203で電気的に接続
されており、カードへ書き込む情報や、カードから読み
取る情報の管理などは、基本的に端末202が行う構成
になっているが、特願平10−208714で見られる
ような、PCMCIAインタフェースで端末に組み込ん
で動作する、PCカード型R/Wに、本発明のカード検
出の仕組みを組み込んでも、問題なく動作する事は言う
までもない。また、PCMCIA型の場合や、端末とR
/Wの接続をUSBなどの電源供給も可能なケーブルで
行えば、R/Wに電源回路が不要になることも勿論であ
る。FIG. 2 is a functional block diagram of an R / W for an electromagnetic induction type non-contact IC card according to an embodiment of the present invention. In the figure, 201 is the R / W main body, 202 is a terminal such as a personal computer, 203 is a connection cable,
211 is an R / W antenna coil, 212 is a permanent magnet,
213 is an induced current detection circuit, 214 is a transmission / reception circuit, 21
5 is a control circuit, 216 is an interface circuit with a terminal,
217 is a power supply circuit. In the present embodiment, the R / W is electrically connected to a terminal such as a personal computer by a connection cable 203, and management of information to be written to the card and information to be read from the card is basically performed by the terminal 202. However, even if the card detection mechanism of the present invention is incorporated in a PC card type R / W, which is incorporated in a terminal with a PCMCIA interface and operates as shown in Japanese Patent Application No. 10-208714, no problem occurs. Needless to say. Also, in the case of PCMCIA type,
If the connection of / W is performed by a cable which can supply power such as USB, it is needless to say that a power supply circuit is not required for R / W.
【0010】図3に、本発明によるR/Wと非接触IC
カードとの通信開始からR/Wの動作終了までの例を示
す。図に於いて、4は非接触ICカード、18はR/W
の送受信や制御等の回路部、41は非接触ICカードの
アンテナコイル(図1におけるアンテナコイル103に
同じ。)、42は非接触ICカードの回路部である。本
発明によるR/W本体201では、非接触ICカード4
と通信していない場合には、永久磁石による時間変化の
ない直流磁界(磁束)B1のみが存在する「待ち」状態
となっている(A図)。非接触ICカード4を近づける
と、図1で示した原理により、R/W本体201の検出
回路213が非接触ICカード4を検出し、非接触IC
カード4と通信兼パワー供給のためのキャリアC1を送
信開始する(B図)。キャリア送信後、R/W本体20
1から非接触ICカード4を認識するための信号、或い
は非接触ICカード4と通信するための信号S1を送信
し、非接触ICカード4からは信号S1に対するレスポ
ンスR1が送信され、通信が実行される(C図)。ま
た、本発明のR/W本体201では、非接触ICカード
4が通信エリア内に存在する事を確認し続けるために、
カードのある定められたメモリエリアの情報を読み出す
信号と、新たに通信エリア内に挿入される非接触ICカ
ード4’検出のための信号S2を、非接触ICカード4
へデータの読み書きを行う以外でも、決められた時間間
隔で送信し続け、カードからの応答R2を受信する事
で、非接触ICカード4の存在や新たな非接触ICカー
ド4’の追加を確認し続ける(D図)。従って、一枚の
非接触ICカードが認識されている状態で、さらにもう
一枚の非接触ICカード4’が通信エリア内に挿入され
た場合でも、R/W本体201から決められた間隔で送
信されるカード検出のための信号S2に対する、追加さ
れた非接触ICカード4’からの応答信号R2’で、非
接触ICカードを認識することが可能になる。非接触I
Cカード4を通信エリアから離した場合でも(E図)、
R/W本体201はカードの認識及び追加確認のための
信号S2を送信し続けるが、非接触ICカードからの応
答が無いため、カードが無くなった事をR/Wは認識で
き、キャリア及び信号の送信を停止し、(A図)と同様
の「待ち」状態に移る。このように、本発明によるR/
Wでは、非接触ICカードが存在するときのみR/W本
体201が動作しており、それ以外の時間帯では、検出
回路のみが動作している「待ち」状態となっている。ま
た、非接触ICカード4が通信エリア内に挿入された後
のR/W本体201と非接触ICカード4間で通信を行
っている間でも、永久磁石による時間変化しない磁束B
1は存在し続けるが、R/W本体201と非接触ICカ
ード4間の通信には、交流磁界を利用しているため、磁
束B1は通信に影響を与えない。FIG. 3 shows an R / W and a non-contact IC according to the present invention.
An example from the start of communication with the card to the end of R / W operation will be described. In the figure, 4 is a non-contact IC card, 18 is R / W
41 is an antenna coil of the non-contact IC card (the same as the antenna coil 103 in FIG. 1), and 42 is a circuit section of the non-contact IC card. In the R / W body 201 according to the present invention, the non-contact IC card 4
When the communication is not performed, there is a "waiting" state in which only the DC magnetic field (magnetic flux) B1 that does not change over time due to the permanent magnet exists (FIG. A). When the non-contact IC card 4 is approached, the detection circuit 213 of the R / W main unit 201 detects the non-contact IC card 4 and, based on the principle shown in FIG.
The transmission of the carrier C1 for communication and power supply with the card 4 is started (FIG. B). After carrier transmission, R / W main unit 20
1 transmits a signal for recognizing the non-contact IC card 4 or a signal S1 for communicating with the non-contact IC card 4, and the non-contact IC card 4 transmits a response R1 to the signal S1 to execute communication. (Fig. C). Further, in the R / W main unit 201 of the present invention, in order to continuously confirm that the non-contact IC card 4 exists in the communication area,
A signal for reading information from a predetermined memory area of the card and a signal S2 for detecting a non-contact IC card 4 'newly inserted in the communication area are transmitted to the non-contact IC card 4
In addition to reading / writing data from / to the card, transmission is continued at a predetermined time interval, and by receiving a response R2 from the card, the existence of the non-contact IC card 4 and the addition of a new non-contact IC card 4 'are confirmed. (D). Therefore, even when another non-contact IC card 4 ′ is inserted into the communication area while one non-contact IC card is being recognized, the non-contact IC card 4 ′ is inserted at intervals determined by the R / W main unit 201. The response signal R2 'from the added non-contact IC card 4' to the transmitted signal S2 for detecting the card can recognize the non-contact IC card. Non-contact I
Even when the C card 4 is separated from the communication area (FIG. E),
The R / W main unit 201 continues to transmit the signal S2 for card recognition and additional confirmation, but since there is no response from the non-contact IC card, the R / W can recognize that the card is gone, and Is stopped, and the state shifts to the "waiting" state similar to that shown in FIG. Thus, the R /
In W, the R / W main unit 201 is operating only when the non-contact IC card is present, and in other time zones, only the detection circuit is operating and is in a “waiting” state. Further, even during the communication between the R / W main unit 201 and the non-contact IC card 4 after the non-contact IC card 4 is inserted into the communication area, the magnetic flux B which does not change over time due to the permanent magnet.
1, the communication between the R / W main body 201 and the non-contact IC card 4 uses an AC magnetic field, so that the magnetic flux B1 does not affect the communication.
【0011】[0011]
【発明の効果】以上のように本発明により、従来の非接
触ICカードR/Wに、永久磁石と簡単な検出回路を組
み込む事で、非接触ICカードをR/Wに近づける動作
だけでR/Wが動作を開始し、未使用時には余分な電力
消費を押さえる非接触ICカード読み取り書き込み装置
が実現出来た。As described above, according to the present invention, by incorporating a permanent magnet and a simple detection circuit into a conventional non-contact IC card R / W, the R can be obtained only by the operation of bringing the non-contact IC card close to the R / W. / W starts operation, and a non-contact IC card reader / writer that can suppress unnecessary power consumption when not in use has been realized.
【図1】本発明によるR/Wの非接触ICカードを検知
する方法の原理図。FIG. 1 is a principle diagram of a method for detecting an R / W non-contact IC card according to the present invention.
【図2】本発明によるR/Wの機能ブロック図。FIG. 2 is a functional block diagram of an R / W according to the present invention.
【図3】本発明によるR/Wの動作例。FIG. 3 is an example of R / W operation according to the present invention.
1:R/W、本体 2:端末 3:接続ケーブル 4:非接触I
Cカード 11、101:R/Wのアンテナコイル、 102、212:永久磁石 18:R/
Wの回路部 213:検出回路 214:送受
信回路 215:制御回路 216:端末
とのインタフェース回路 217:電源回路 41、103:非接触ICカードのアンテナコイル、 42:非接触ICカードの回路部 B1:永久磁石による時間変化しない磁束 B2:非接触ICカードがR/Wの永久磁石が生成する
磁束を打ち消す向きに生成する磁束 C1:R/Wが送信するキャリア、 I1:カードのアンテナコイルに誘導される電流 I2:R/Wのアンテナコイルに誘導される電流、 S1:R/Wからカードへ送信される信号 S2:カードの存在及びカードの追加を認識するために
R/Wからカードへ送信される信号 R1:S1に対するカードの応答信号 R2,R2’:S2に対するカードの応答信号1: R / W, body 2: terminal 3: connection cable 4: non-contact I
C card 11, 101: R / W antenna coil, 102, 212: permanent magnet 18: R /
W circuit unit 213: detection circuit 214: transmission / reception circuit 215: control circuit 216: interface circuit with terminal 217: power supply circuit 41, 103: antenna coil of non-contact IC card, 42: circuit unit of non-contact IC card B1: Magnetic flux that does not change over time due to the permanent magnet B2: Magnetic flux generated by the non-contact IC card in a direction to cancel the magnetic flux generated by the R / W permanent magnet C1: Carrier transmitted by R / W, I1: Guided to the antenna coil of the card I2: Current induced in the R / W antenna coil, S1: Signal transmitted from R / W to card S2: Transmitted from R / W to card to recognize presence of card and addition of card R1: Response signal of card to S1 R2, R2 ': Response signal of card to S2
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西谷 隆 東京都千代田区大手町二丁目3番1号 日 本電信電話株式会社内 Fターム(参考) 5B058 CA15 CA22 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Takashi Nishitani 2-3-1 Otemachi, Chiyoda-ku, Tokyo F-term in Nippon Telegraph and Telephone Corporation (reference) 5B058 CA15 CA22
Claims (3)
ナコイルと、記憶素子と、送受信回路、及びこれらを制
御する回路を有する電磁誘導型の非接触ICカードに対
してデータを読み取り書き込むための、非接触ICカー
ド読み取り書き込み装置であって、該非接触ICカード
読み取り書き込み装置は、通信用のアンテナコイルと、
送受信回路、及びこれらを制御する回路を少なくとも有
し、該通信用のアンテナコイルの内部に永久磁石を備
え、該永久磁石による磁束と、前記非接触ICカードの
アンテナコイルの相互作用によって発生する磁束によっ
て、該非接触ICカード読み取り書き込み装置のアンテ
ナコイルに誘起する電流を検出する回路を備えることを
特徴とした非接触ICカード読み取り書き込み装置。An AC magnetic field is used as a communication medium to read and write data from and to an electromagnetic induction type non-contact IC card having a communication antenna coil, a storage element, a transmission / reception circuit, and a circuit for controlling these elements. A non-contact IC card reading and writing device, wherein the non-contact IC card reading and writing device includes a communication antenna coil;
At least a transmission / reception circuit and a circuit for controlling them, a permanent magnet is provided inside the antenna coil for communication, and a magnetic flux generated by the interaction between the magnetic flux by the permanent magnet and the antenna coil of the non-contact IC card A circuit for detecting a current induced in an antenna coil of the non-contact IC card reader / writer.
書き込み装置において、非接触ICカードと未通信状態
時に、通信に用いるキャリアを停止させていることを特
徴とする非接触ICカード読み取り書き込み装置であっ
て、該非接触ICカードと永久磁石の相互作用によって
生じる時間変化する磁束により、読み取り書き込み装置
のアンテナコイルに誘導される電流を上記検出回路が検
知することで、該非接触ICカードとの通信動作を開始
することを特徴とした非接触ICカード読み取り書き込
み装置。2. The non-contact IC card reading and writing device according to claim 1, wherein the carrier used for communication is stopped when the communication with the non-contact IC card is not performed. Wherein the detection circuit detects a current induced in an antenna coil of the read / write device by a time-varying magnetic flux generated by an interaction between the non-contact IC card and the permanent magnet, thereby communicating with the non-contact IC card. A non-contact IC card reading / writing device, which starts operation.
み取り書き込み装置において、通信状態にある非接触I
Cカードに対して、間隔をあけて定められた時間間隔で
ある特定のメモリエリアへの読み込み、或いは認識して
いない非接触ICカードを認識するための信号を送信
し、該非接触ICカードからの応答が無い場合に、通信
用キャリア、及び信号の送信を停止することを特徴とし
た非接触ICカード読み取り書き込み装置。3. The non-contact IC card read / write device according to claim 1, wherein said non-contact IC card is in a communication state.
To the C card, a signal for reading into a specific memory area at a time interval set at intervals or recognizing an unrecognized non-contact IC card is transmitted. A non-contact IC card reader / writer which stops transmission of a communication carrier and a signal when there is no response.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34072499A JP2001155121A (en) | 1999-11-30 | 1999-11-30 | Non-contact ic card reader-writer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34072499A JP2001155121A (en) | 1999-11-30 | 1999-11-30 | Non-contact ic card reader-writer |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001155121A true JP2001155121A (en) | 2001-06-08 |
Family
ID=18339715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP34072499A Pending JP2001155121A (en) | 1999-11-30 | 1999-11-30 | Non-contact ic card reader-writer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2001155121A (en) |
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