JP2005165839A - Reader/writer, ic tag, article control device, and optical disk device - Google Patents

Reader/writer, ic tag, article control device, and optical disk device Download PDF

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JP2005165839A
JP2005165839A JP2003406003A JP2003406003A JP2005165839A JP 2005165839 A JP2005165839 A JP 2005165839A JP 2003406003 A JP2003406003 A JP 2003406003A JP 2003406003 A JP2003406003 A JP 2003406003A JP 2005165839 A JP2005165839 A JP 2005165839A
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tag
reader
writer
rod
antenna
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Daisuke Saito
大介 斎藤
Toshihiro Kojima
敏宏 小島
Nobuhiko Ido
伸彦 井土
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Nippon Signal Co Ltd
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Nippon Signal Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a reader/writer that eliminates the interference between tags and influence due to electromagnetic wave disturbance by a metal of an article, on which an IC tag is attached by making the antenna of the reader/writer bar-shaped and opening the center of a loop antenna of the IC tag attached to the article. <P>SOLUTION: The optical disk control device 300 is constituted of a computer 150, that is located outside and controls the whole system by communicating data to the reader/writer 100, the reader/writer 100 that performs transmission of a conveyance power, based on a predetermined modulation method and communication of data with the IC tag 200 in a non-contact manner, the bar-shaped antenna 9 having generally the same diameter as the shaft hole of the optical disk, a plurality of optical disks 400 equipped with the IC tag 200, and a holder 57 that holds the bar-shaped antenna 9 and the plurality of optical disks 400. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、非接触ＩＣタグ用リーダライタに関し、さらに詳しくは、金属による電波障害を回避する技術手段に関するものである。   The present invention relates to a reader / writer for a non-contact IC tag, and more particularly to technical means for avoiding radio wave interference caused by metal.

近年、ＩＣカードと呼ばれる新しい情報記録媒体が、市場に広く出回っている。ＩＣカードは、クレジットカード、銀行カード、ポイントカード等のカード状あるいはシート状の形状を備え、カード内にＩＣ(Integrated Circuit)が組み込まれているものを総称した名称である。最近では、ＩＣカードの応用品としてのＩＣタグが、各種物品に付されて在庫管理等の効率化に貢献している。このようなＩＣカードやＩＣタグは、リーダライタとの間でのデータの授受を電波にて行うため、定期券等のように１枚単位で処理されるＩＣカードでは特に発生しない特有の問題を有している。
即ち、商品がＣＤやＤＶＤ等の光ディスクの場合、記録媒体の情報記録領域にレーザ光を反射するための金属箔が形成されているため、その上にＩＣタグを取り付けると金属箔によりリーダライタからの電波が反射と減衰によりＩＣタグが動作するための必要磁界に達しなくなり、情報が正確に読み書きできなくなるといった問題がある。仮にＩＣタグを光ディスクのケースの隅部等に取り付けて金属箔に重ならないようにすれば１枚単位では情報の読み書きは可能であるが、ケースと光ディスクが別体のため、必ずしもＩＣタグから読み書きする情報が、光ディスク本体の記録情報と一致する保証がなくなる。
また前述の金属箔により電波が反射されて情報が正確に読み書きできないといった問題を解決するために、ＩＣタグと金属との間に磁性シートを設け、それにより磁路を形成してタグ情報を読み取る技術がある。しかし、ＩＣタグを積載した場合、磁束は外側だけ通過して内側には磁束が通過しないため、内側のタグは交信できないといった問題が残る。
また従来技術として特開２００３−５９１７７公報には、コンピュータ記録媒体に記録した再生可能な音楽・画像などの情報に対して、不正使用防止、機密情報の漏洩あるいは個人認証による機密情報の保護管理を行う技術について開示されている。それによると、ＲＦＩＤおよびコンピュータ記録媒体にそれぞれ識別情報が記録されたＲＦＩＤ搭載コンピュータ記録媒体から情報を読み取り再生する際に、コンピュータに、前記記録媒体および前記ＲＦＩＤより識別情報を読み取り、双方の識別情報から正しい利用者と認識されたとき、前記記録媒体に記録されている情報を読み取り再生を可能とする機能を実現させるためのプログラムについて開示されている。
また特開２００２−２４５４３３公報には、光ディスクとＩＣカードの融合を図るために、光ディスクの非記録領域に一体的にループアンテナとＩＣチップを形成して光ディスクの管理を行う技術について開示されている。
また同一出願人より特開２００２−２４７７６公報として、リーダライタの磁束をＩＣカードに効率よく集中させるために、ループコイル内に磁心を挿入したリーダライタについて開示されている。
特開２００３−５９１７７公報 特開２００２−２４５４３３公報 特開２００２−２４７７６公報 In recent years, new information recording media called IC cards are widely available on the market. The IC card is a generic name for cards having a card-like or sheet-like shape such as a credit card, a bank card, a point card, etc., and an IC (Integrated Circuit) incorporated in the card. Recently, an IC tag as an applied product of an IC card is attached to various articles and contributes to the efficiency of inventory management and the like. Since such IC cards and IC tags exchange data with reader / writers by radio waves, there is a particular problem that does not occur particularly with IC cards that are processed in units such as commuter passes. Have.
That is, when the product is an optical disc such as a CD or DVD, a metal foil for reflecting laser light is formed on the information recording area of the recording medium. When an IC tag is attached on the metal foil, the metal foil removes the reader / writer from the reader / writer. There is a problem in that the radio waves of the IC tag do not reach the required magnetic field for the operation of the IC tag due to reflection and attenuation, and information cannot be read and written accurately. If the IC tag is attached to the corner of the optical disk case so that it does not overlap the metal foil, information can be read and written in units of one sheet. However, because the case and optical disk are separate, reading and writing are not necessarily done from the IC tag. There is no guarantee that the information to be recorded matches the recording information of the optical disc body.
In addition, in order to solve the problem that radio waves are reflected by the metal foil and the information cannot be read and written accurately, a magnetic sheet is provided between the IC tag and the metal, thereby forming a magnetic path and reading the tag information. There is technology. However, when an IC tag is loaded, the magnetic flux passes only outside and the magnetic flux does not pass inside, so that the problem remains that the inner tag cannot communicate.
Further, as a conventional technique, Japanese Patent Application Laid-Open No. 2003-59177 discloses the protection management of confidential information by preventing unauthorized use, leakage of confidential information, or personal authentication with respect to information such as reproducible music and images recorded on a computer recording medium. The technique to perform is disclosed. According to this, when reading and reproducing information from an RFID-equipped computer recording medium in which identification information is recorded on the RFID and the computer recording medium, the computer reads the identification information from the recording medium and the RFID, and the identification information of both Discloses a program for realizing a function of reading and reproducing information recorded on the recording medium when the user is recognized as a correct user.
Japanese Laid-Open Patent Publication No. 2002-245433 discloses a technique for managing an optical disk by integrally forming a loop antenna and an IC chip in a non-recording area of the optical disk in order to fuse an optical disk and an IC card. .
Further, Japanese Patent Application Laid-Open No. 2002-24776 discloses a reader / writer in which a magnetic core is inserted in a loop coil in order to efficiently concentrate the magnetic flux of the reader / writer on an IC card.
JP 2003-59177 A JP 2002-245433 A JP 2002-24776 A

前述のように光ディスク或いは金属で構成される商品にＩＣタグを取り付けた場合、リーダライタの電波を金属が反射して正常に交信ができないといった問題がある。この問題を解決するために、光ディスクの金属箔が存在しない非情報記録領域にＩＣタグを取り付けたり、非磁性シートをＩＣタグに取り付けて磁路を形成する等の方法があるが、いずれの場合も複数の物品を重ねた場合、ＩＣタグ同士の干渉や金属の影響によりリーダライタとの交信が正常に行われないといった問題が残る。
また特許文献１に開示されている従来技術は、ＣＤ等の記録媒体面以外の場所にＲＦＩＤチップを埋め込んだ構成であり、複数のＣＤを重ねた場合、ＲＦＩＤチップの位置関係が重複する可能性があるため、ＩＣタグ同士の干渉により必ずしも全てのＲＦＩＤチップからの情報を正確に読み取れる保証はない。
また特許文献２に開示されている従来技術は、光ディスクにＩＣタグを一体的に構成し、光ディスクの情報は従来通り光ディスク装置により読み書きし、ＩＣタグの情報は別のリーダライタにより読み書きするものであり、特許文献１と同様の問題を含んでいる。
また特許文献３に開示されている従来技術は、あくまでも磁束をＩＣタグに効率良く通過させる技術であり、ループアンテナの磁心にＩＣタグのループアンテナを挿通して読み書きするものではないため、複数のＩＣタグの記録情報を一括して読み書きすることはできない。
本発明は、かかる課題に鑑み、リーダライタのアンテナを棒状にし、且つ商品に取り付けられたＩＣタグのループアンテナの中心部を開口することにより、ＩＣタグが取り付けられた商品の、タグ同士の干渉や金属による電磁波障害の影響を無くしたリーダライタを提供することを目的とする。 As described above, when an IC tag is attached to a product made of an optical disk or metal, there is a problem that the radio wave of the reader / writer is reflected by the metal and cannot communicate normally. In order to solve this problem, there are methods such as attaching an IC tag to a non-information recording area where a metal foil of an optical disk does not exist, or attaching a non-magnetic sheet to an IC tag to form a magnetic path. However, when a plurality of articles are stacked, there remains a problem that communication with the reader / writer is not normally performed due to interference between IC tags or the influence of metal.
The prior art disclosed in Patent Document 1 has a configuration in which an RFID chip is embedded in a location other than the surface of a recording medium such as a CD. When a plurality of CDs are stacked, the positional relationship between the RFID chips may overlap. Therefore, there is no guarantee that information from all RFID chips can be accurately read due to interference between IC tags.
In the prior art disclosed in Patent Document 2, an IC tag is integrally formed on an optical disc, information on the optical disc is read and written by an optical disc apparatus as usual, and information on the IC tag is read and written by another reader / writer. There is a problem similar to that of Patent Document 1.
In addition, the prior art disclosed in Patent Document 3 is a technique that allows magnetic flux to pass through the IC tag efficiently, and does not read or write by inserting the loop antenna of the IC tag into the magnetic core of the loop antenna. It is impossible to read / write the recorded information of the IC tag at once.
In view of the above problems, the present invention makes the antenna of the reader / writer a rod-like shape and opens the center of the loop antenna of the IC tag attached to the product, thereby interfering the tags of the product with the IC tag attached. Another object of the present invention is to provide a reader / writer that eliminates the effects of electromagnetic interference caused by metal or metal.

本発明はかかる課題を解決するために、請求項１は、所定の変調方式に基づく搬送電力の送信とデータの授受をＩＣタグとの間で非接触にて行うリーダライタであって、前記リーダライタは棒状の磁心に導線を所定回数巻きつけた棒状アンテナを備え、前記ＩＣタグのループアンテナと前記棒状アンテナの磁心が互いに挿通し合うことにより、前記ＩＣタグに起電力を誘起して、前記ＩＣタグとの間で所定の変調方式に基づく搬送電力の送信とデータの授受を行うことを特徴とする。
磁心に巻きつけたコイルに信号（交流信号）を流すと、磁心に磁束の変化が生じる。一方、磁心にループアンテナを挿通すると磁束変化による誘導作用によって、ループアンテナに起電力が誘起される。本発明はこの原理を利用してリーダライタのアンテナを棒状の磁心とし、そこにコイルを所定ピッチにて巻きつけ、その磁心にＩＣタグのループアンテナを挿通するものである。
かかる発明によれば、ＩＣタグのループアンテナと棒状アンテナの磁心が互いに挿通し合うので、金属による電波障害の影響を無くすことができる。
請求項２は、前記棒状アンテナの磁心材料は、フェライト、純鉄、珪素鋼、鉄・ニッケル合金、及びダストコアであることを特徴とする。
コイルに電流を流すと、その周囲には磁界が生ずるが、コイルの中に磁心を入れると磁心は磁石となり更に磁界が強まる。磁心には比透磁率が大きくヒステリシス現象の小さいものが好ましい。このような条件を満足する磁心として、フェライト、純鉄、珪素鋼、鉄・ニッケル合金、及びダストコアがある。
かかる発明によれば、棒状アンテナの磁心材料がフェライト、純鉄、珪素鋼、鉄・ニッケル合金、及びダストコアであるので、磁心の比透磁率を大きく、且つヒステリシス現象を小さくすることができる。 In order to solve such a problem, the present invention provides a reader / writer that performs transmission of carrier power and transmission / reception of data based on a predetermined modulation method in a non-contact manner with an IC tag. The writer includes a rod-shaped antenna in which a conductive wire is wound around a rod-shaped magnetic core a predetermined number of times. When the loop antenna of the IC tag and the magnetic core of the rod-shaped antenna are inserted into each other, an electromotive force is induced in the IC tag, Transmission of carrier power and transmission / reception of data based on a predetermined modulation method are performed with an IC tag.
When a signal (AC signal) is passed through a coil wound around a magnetic core, a change in magnetic flux occurs in the magnetic core. On the other hand, when the loop antenna is inserted through the magnetic core, an electromotive force is induced in the loop antenna due to an induction effect due to a change in magnetic flux. The present invention uses this principle to make the reader / writer antenna a rod-shaped magnetic core, wind a coil around it at a predetermined pitch, and insert the IC tag loop antenna through the magnetic core.
According to this invention, since the loop antenna of the IC tag and the magnetic core of the rod-shaped antenna are inserted into each other, the influence of the radio wave interference caused by the metal can be eliminated.
According to a second aspect of the present invention, the magnetic core material of the rod-shaped antenna is ferrite, pure iron, silicon steel, iron / nickel alloy, and dust core.
When a current is passed through the coil, a magnetic field is generated around it, but when a magnetic core is inserted into the coil, the magnetic core becomes a magnet and the magnetic field is further strengthened. The magnetic core preferably has a large relative permeability and a small hysteresis phenomenon. Magnetic cores that satisfy such conditions include ferrite, pure iron, silicon steel, iron / nickel alloy, and dust core.
According to this invention, since the magnetic core material of the rod-shaped antenna is ferrite, pure iron, silicon steel, iron / nickel alloy, and dust core, the relative permeability of the magnetic core can be increased and the hysteresis phenomenon can be reduced.

請求項３は、前記棒状アンテナは、前記棒状磁心の長手方向の全長又は一部に亘って前記導線を所定回数巻きつけたことを特徴とする。
棒状アンテナの磁束は、磁心に巻きつけられたコイルの巻き数（Ｎ）と電流（Ａ）の積（ＡＴ）に比例する。従って、送信パワーを増やさないで所定の磁束を得るには、磁心の長手方向の全長又は一部に亘ってコイルを巻きつけ巻き数（Ｎ）を増やす必要がある。また、ループアンテナとの相互誘導作用を強めるには棒状アンテナのコイルとループアンテナが近いほど強くなる。そのためにも磁心の長手方向の全長又は一部に亘って導線を巻きつけることは、相互誘導作用を強めるには有効である。
かかる発明によれば、棒状アンテナは、磁心の長手方向の全長又は一部に亘って導線を所定回数巻きつけた構成とするので、棒状アンテナとループアンテナとの相互誘導作用を強め、且つ送信パワーを必要最小限にすることができる。
請求項４は、請求項１記載のリーダライタのリードライト対象物としての前記ＩＣタグは、誘電体基板と、該誘電体基板の所定の位置に設けた開口部の周縁に導線を所定回数周回して形成したループアンテナと、該ループアンテナを介して所定の変調方式に基づく搬送電力の送信とデータの授受を制御する集積回路とを備えたことを特徴とする。
本発明のもう一つの特徴はＩＣタグの構成である。即ち、ＩＣタグを誘電体基板で構成し、その基板の所定の位置に中心部を開口したループアンテナを形成して制御用の集積回路（ＩＣ）を搭載する。この構成により、ループアンテナとリーダライタの棒状アンテナとが確実に相互誘導作用により結合することができる。
かかる発明によれば、ＩＣタグは、誘電体基板の所定の位置に設けた開口部の周回に導線を所定回数周回して形成したループアンテナと、このループアンテナを介して所定の変調方式に基づく搬送電力の送信とデータの授受を制御する集積回路とを備えたので、ループアンテナとリーダライタの棒状アンテナとが確実に相互誘導作用により結合して、リーダライタとＩＣタグの交信を確実なものにすることができる。 According to a third aspect of the present invention, the rod-shaped antenna is characterized in that the conducting wire is wound a predetermined number of times over the entire length or a part of the rod-shaped magnetic core in the longitudinal direction.
The magnetic flux of the rod-shaped antenna is proportional to the product (AT) of the number of turns (N) of the coil wound around the magnetic core and the current (A). Therefore, in order to obtain a predetermined magnetic flux without increasing the transmission power, it is necessary to increase the number of turns (N) by winding the coil over the entire length or part of the length of the magnetic core. In addition, in order to strengthen the mutual induction effect with the loop antenna, the closer the coil of the rod-shaped antenna and the loop antenna are, the stronger it is. Therefore, winding the conductive wire over the entire length or a part of the longitudinal direction of the magnetic core is effective for enhancing the mutual induction effect.
According to this invention, since the rod-shaped antenna has a configuration in which the conducting wire is wound a predetermined number of times over the entire length or a part of the longitudinal direction of the magnetic core, the mutual induction action between the rod-shaped antenna and the loop antenna is enhanced, and the transmission power is increased. Can be minimized.
According to a fourth aspect of the present invention, there is provided the IC tag as the read / write object of the reader / writer according to the first aspect of the present invention, in which the conductor is circulated a predetermined number of times around the dielectric substrate and the periphery of the opening provided at a predetermined position of the dielectric substrate. And an integrated circuit that controls transmission of carrier power and transmission / reception of data based on a predetermined modulation system via the loop antenna.
Another feature of the present invention is the configuration of the IC tag. That is, the IC tag is formed of a dielectric substrate, a loop antenna having an opening at the center is formed at a predetermined position of the substrate, and a control integrated circuit (IC) is mounted. With this configuration, the loop antenna and the rod-shaped antenna of the reader / writer can be reliably coupled by mutual induction.
According to this invention, the IC tag is based on a loop antenna formed by winding a lead wire a predetermined number of times around the opening provided at a predetermined position of the dielectric substrate, and a predetermined modulation system via the loop antenna. Since it has an integrated circuit that controls the transmission of carrier power and the transmission and reception of data, the loop antenna and the rod-shaped antenna of the reader / writer are reliably coupled by mutual induction, ensuring communication between the reader / writer and the IC tag. Can be.

請求項５は、請求項４記載のＩＣタグの前記集積回路のメモリに当該ＩＣタグの取付対象物に関する必要情報を記憶し、当該ＩＣタグの開口部と前記取付対象物の開口部との位置関係が一致するように構成することにより、前記取付対象物の開口部を請求項１記載のリーダライタの前記棒状アンテナに挿入、若しくは前記棒状アンテナを前記取付対象物の開口部に挿入して前記取付対象物の必要情報の読み書きを行うことを特徴とする。
ＩＣタグのループアンテナの中心部には、棒状アンテナを（に）挿入するための開口部（穴）が形成されている。従って、ＩＣタグを物品に取り付ける場合は、その物品の必要情報をメモリに記憶し、且つその開口部と物品の開口部を一致するように構成する必要がある。そうすることにより、物品の開口部を（に）棒状アンテナに（を）挿入すると、物品の必要情報を取得することができる。
かかる発明によれば、ＩＣタグの集積回路のメモリに当該ＩＣタグを取り付ける物品の必要情報を記憶し、当該ＩＣタグの開口部と物品の開口部との位置関係が一致するように構成するので、物品の開口部を（に）棒状アンテナに（を）挿入すると、物品の必要情報を取得することができる。
請求項６は、請求項２又は３に記載の棒状アンテナをディスク回転軸内に形成したディスク機構部と、請求項４に記載のＩＣタグを備えた光ディスクと、請求項１乃至３の何れか一項に記載のリーダライタとを備え、前記光ディスク機構部に前記光ディスクを装填することにより、該光ディスクのＩＣタグに記憶された情報を読み書きすると共に、該光ディスクの記録情報を読み書きすることを特徴とする。
光ディスク装置の機構部にはディスクを回転するための回転軸がある。本発明はその回転軸に棒状アンテナを形成し、光ディスクの中心部分にＩＣタグを形成することにより、ＩＣタグの情報を読み書きすると共に、光ディスクの記録情報を読み書きするものである。これにより、光ディスクのセキュリティを向上させ、不正なコピー等を防ぐことができる。
かかる発明によれば、光ディスクの回転軸に棒状アンテナを形成し、光ディスクの中心部分にＩＣタグを形成するので、光ディスクのセキュリティを向上させ、不正なコピー等を防ぐことができる。 According to a fifth aspect of the present invention, the necessary information regarding the attachment target of the IC tag is stored in the memory of the integrated circuit of the IC tag according to the fourth aspect, and the positions of the opening of the IC tag and the opening of the attachment target The opening of the attachment object is inserted into the rod-shaped antenna of the reader / writer according to claim 1, or the rod-shaped antenna is inserted into the opening of the attachment object by configuring the relationship so as to match. It is characterized by reading and writing necessary information on the attachment object.
At the center of the loop antenna of the IC tag, an opening (hole) for inserting the rod-shaped antenna is formed. Therefore, when attaching an IC tag to an article, it is necessary to store the necessary information of the article in a memory and configure the opening and the opening of the article to coincide. By doing so, when the opening of the article is inserted into the rod-shaped antenna, necessary information on the article can be acquired.
According to such an invention, the necessary information of the article to which the IC tag is attached is stored in the memory of the IC tag integrated circuit, and the positional relationship between the opening of the IC tag and the opening of the article is matched. When the opening of the article is inserted into the rod-shaped antenna, necessary information on the article can be acquired.
A sixth aspect of the present invention relates to a disk mechanism portion in which the rod-shaped antenna according to the second or third aspect is formed in a disk rotation shaft, an optical disk having the IC tag according to the fourth aspect, and any one of the first to third aspects. A reader / writer according to claim 1, wherein the optical disk is loaded into the optical disk mechanism unit to read / write information stored in an IC tag of the optical disk and to read / write information recorded on the optical disk. And
A mechanism part of the optical disk device has a rotation shaft for rotating the disk. In the present invention, a rod-shaped antenna is formed on the rotating shaft, and an IC tag is formed at the center of the optical disc, whereby information on the IC tag is read and written and information recorded on the optical disc is read and written. As a result, the security of the optical disk can be improved and unauthorized copying or the like can be prevented.
According to this invention, since the rod-shaped antenna is formed on the rotating shaft of the optical disk and the IC tag is formed at the center of the optical disk, the security of the optical disk can be improved and unauthorized copying and the like can be prevented.

請求項７は、前記ＩＣタグは、前記光ディスクに貼付若しくは一体に形成されていることを特徴とする。
既に存在する光ディスクの在庫管理等を行う場合は、誘電体基板上に形成されたＩＣタグを後から光ディスクに貼付する必要がある。この場合、任意に管理対象とする光ディスクを選択することができるが、貼付する手間がかかり、ＩＣタグを剥がされるといった危険性がある。それに対して、光ディスクの製造段階で一体的にＩＣタグを埋め込んでおけば、そのような危険性は回避できる。
かかる発明によれば、ＩＣタグは、光ディスクに貼付若しくは一体に形成されているので、既存の光ディスクから新規に製造するディスクまで広い範囲で対応することができる。 According to a seventh aspect of the present invention, the IC tag is attached to or integrally formed with the optical disc.
When inventory management of an existing optical disk is performed, an IC tag formed on a dielectric substrate needs to be attached to the optical disk later. In this case, an optical disc to be managed can be arbitrarily selected, but there is a risk that the IC tag is peeled off due to the time and effort required for pasting. On the other hand, if the IC tag is embedded in the optical disk manufacturing stage, such a risk can be avoided.
According to this invention, since the IC tag is attached to or integrally formed with the optical disk, it can be used in a wide range from an existing optical disk to a newly manufactured disk.

請求項１の発明によれば、ＩＣタグのループアンテナと棒状アンテナの磁心が互いに挿通し合うので、金属による電波障害の影響を無くすことができる。
また請求項２では、棒状アンテナの磁心材料がフェライト、純鉄、珪素鋼、鉄・ニッケル合金、及びダストコアであるので、磁心の比透磁率を大きく、且つヒステリシス現象を小さくすることができる。
また請求項３では、棒状アンテナは、磁心の長手方向の全体又は一部に亘って導線を所定回数巻きつけた構成とするので、棒状アンテナとループアンテナとの相互誘導作用を強め、且つ送信パワーを必要最小限にすることができる。
また請求項４では、ＩＣタグは、誘電体基板の所定の位置に設けた開口部の周回に導線を所定回数周回して形成したループアンテナと、このループアンテナを介して所定の変調方式に基づく搬送電力の送信とデータの授受を制御する集積回路とを備えたので、ループアンテナとリーダライタの棒状アンテナとが確実に相互誘導作用により結合して、リーダライタとＩＣタグの交信を確実なものにすることができる。
また請求項５では、ＩＣタグの集積回路のメモリに当該ＩＣタグを取り付ける物品の必要情報を記憶し、当該ＩＣタグの開口部と物品の開口部との位置関係が一致するように構成するので、物品の開口部を（に）棒状アンテナに（を）挿入すると、物品の必要情報を取得することができる。
また請求項６では、光ディスクの回転軸に棒状アンテナを形成し、光ディスクの中心部分にＩＣタグを形成するので、光ディスクのセキュリティを向上させ、不正なコピー等を防ぐことができる。
また請求項７では、ＩＣタグは、光ディスクに貼付若しくは一体に形成されているので、既存の光ディスクから新規に製造するディスクまで広い範囲で対応することができる。 According to the first aspect of the present invention, since the loop antenna of the IC tag and the magnetic core of the rod-shaped antenna are inserted through each other, it is possible to eliminate the influence of radio wave interference caused by metal.
In the second aspect, since the magnetic core material of the rod-shaped antenna is ferrite, pure iron, silicon steel, iron / nickel alloy, and dust core, the relative permeability of the magnetic core can be increased and the hysteresis phenomenon can be decreased.
According to the third aspect of the present invention, since the rod-shaped antenna has a configuration in which the conducting wire is wound a predetermined number of times over the whole or a part of the longitudinal direction of the magnetic core, the mutual induction action between the rod-shaped antenna and the loop antenna is strengthened and the transmission power is increased. Can be minimized.
According to a fourth aspect of the present invention, the IC tag is based on a loop antenna formed by circulating a lead wire a predetermined number of times around the opening provided at a predetermined position of the dielectric substrate, and based on a predetermined modulation system via the loop antenna. Since it has an integrated circuit that controls the transmission of carrier power and the transmission and reception of data, the loop antenna and the rod-shaped antenna of the reader / writer are reliably coupled by mutual induction, ensuring communication between the reader / writer and the IC tag. Can be.
According to the fifth aspect of the present invention, the necessary information of the article to which the IC tag is attached is stored in the memory of the integrated circuit of the IC tag, and the positional relationship between the opening of the IC tag and the opening of the article is matched. When the opening of the article is inserted into the rod-shaped antenna, necessary information on the article can be acquired.
According to the sixth aspect of the present invention, since the rod-shaped antenna is formed on the rotating shaft of the optical disk and the IC tag is formed at the center part of the optical disk, the security of the optical disk can be improved and unauthorized copying and the like can be prevented.
According to the seventh aspect of the present invention, since the IC tag is attached to or integrally formed with the optical disk, it can be used in a wide range from an existing optical disk to a newly manufactured disk.

以下、本発明を図に示した実施形態を用いて詳細に説明する。但し、この実施形態に記載される構成要素、種類、組み合わせ、形状、その相対配置などは特定的な記載がない限り、この発明の範囲をそれのみに限定する主旨ではなく単なる説明例に過ぎない。
図１は、本発明のリーダライタの構成を示すブロック図である。このリーダライタ１００は、外部にあってリーダライタ１００に対してデータの授受を行ってシステム全体を制御するコンピュータ（以下、ＰＣと記す）１５０と、外部のＰＣ１５０とのデータの通信プロトコルを司る送受信装置１と、リーダライタ１００全体の動作を制御する制御装置（ＣＰＵ）２と、制御装置２を動作させる手順を記録したプログラムを格納するメモリ装置３と、制御装置２からのデータを搬送波に乗せて変調する変調器４と、操作コマンドを入力する入力装置５と、制御装置２からの情報を表示する表示装置６と、制御装置２からの交流信号である電力供給用信号と変調器４からの書き込みコマンドを電力増幅する電力増幅器７と、棒状アンテナ９から受信した信号から２値化データに変換する検波復調器８と、図示しないＩＣタグとの電力用搬送波とデータの授受をする棒状アンテナ９（詳細は後述する）とを備えて構成されている。
図２は、本発明のＩＣタグの構成を示すブロック図である。このＩＣタグ２００は、前記リーダライタ１００からの電力用搬送波によりデータの授受をするループアンテナ２０と、書き込みコマンド読み出しコマンドを送受する送受信装置２１と、ループアンテナ２０からの電力用搬送波を受け、それを整流して直流電力に変換する電力生成回路２２と、制御用プログラムとデータの一時記憶を司るメモリ装置２３と、制御回路２６からの搬送波に送信コマンドを乗せて変調する変調器２４と、送受信装置２１からの搬送波データから２値化データに変換する復調器２５と、ＩＣタグ２００の全体の動作を制御する制御回路２６から構成されている。尚、本実施形態の場合は、ループアンテナ２０以外の回路は１つのＩＣ２０１（以下、制御ＩＣと記す）として集積化されている。 Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention only unless otherwise specified. .
FIG. 1 is a block diagram showing the configuration of the reader / writer of the present invention. This reader / writer 100 is an external computer that transmits and receives data to / from the reader / writer 100 and controls the entire system (hereinafter referred to as a PC) 150, and transmission / reception that controls the data communication protocol between the external PC 150 The device 1, the control device (CPU) 2 that controls the operation of the reader / writer 100 as a whole, the memory device 3 that stores a program that records the procedure for operating the control device 2, and the data from the control device 2 are carried on a carrier wave. A modulator 4 that modulates the operation command, an input device 5 that inputs an operation command, a display device 6 that displays information from the control device 2, a power supply signal that is an AC signal from the control device 2, and the modulator 4. A power amplifier 7 for amplifying the write command of the signal, a detector demodulator 8 for converting the signal received from the rod antenna 9 into binary data, Shaped antenna 9 for transmission and reception of electric power carrier wave and data not IC tag (details will be described later) is constituted by a.
FIG. 2 is a block diagram showing the configuration of the IC tag of the present invention. The IC tag 200 receives a loop antenna 20 that transmits / receives data using a power carrier wave from the reader / writer 100, a transmission / reception device 21 that transmits / receives a write command read command, and a power carrier wave from the loop antenna 20. Power generation circuit 22 that rectifies and converts it into DC power, a memory device 23 that manages temporary storage of a control program and data, a modulator 24 that modulates a transmission command on a carrier wave from the control circuit 26, and transmission and reception It comprises a demodulator 25 that converts carrier wave data from the device 21 into binary data, and a control circuit 26 that controls the overall operation of the IC tag 200. In the present embodiment, circuits other than the loop antenna 20 are integrated as one IC 201 (hereinafter referred to as a control IC).

次に、図１と図２を参照してそれぞれの動作について説明する。リーダライタ１００は、図示しない電源が投入されると、制御装置２のイニシャル動作後、メモリ装置３に記憶されたプログラムに従い動作を開始する。まず、制御装置２は、ＩＣタグ２００に供給する電力供給用信号と、ポーリング信号を電力増幅器７から送信する。その信号は、棒状アンテナ９から電磁波として外部に放射される。次に、ＩＣタグ２００のループアンテナ２０が電力供給用信号を受信し、電力生成回路２２によりその搬送波を整流して直流電力に変換して、タグ内の全ての回路に供給する。電力を供給されて制御回路２６が駆動すると、メモリ装置２３に格納されたプログラムに従って制御を開始する。
次に、ＩＣタグ２００の制御回路２６は、まず送受信装置２１からコマンドを復調器２５で復調して２値化信号に変換し、そのコマンドを解析する。その結果自分が呼び出されていることを認識すると、レスポンスを変調器２４により変調して送受信装置２１を介してループアンテナ２０から送信する。
このレスポンスをリーダライタ１００が棒状アンテナ９で受信して、検波復調器８で２値化コードに変換し、制御装置２により解析してＩＣタグ２００が規格に合致したタグであると認識する。それにより、以後リーダライタ１００とＩＣタグ２００の間で通信が行われる。
図３は、本発明のＩＣタグ２００の一例を示す外観図である。同一構成要素には同一参照番号を付して説明する。このＩＣタグ２００は、略中心に開口部３１を有する誘電体基板３２と、この誘電体基板３２上にパターン化して形成されたループアンテナ２０と、ループアンテナ２０を介してデータの授受を行う制御ＩＣ２０１とを備えて構成される。尚、誘電体基板３２の材質はガラスエポキシ材等の堅い材質でもよいし、ＦＰＣ等のフレキシブルな材質のどちらでも構わない。また、開口部３１とループアンテナ２０の形状は図では円形であるが、形状は円形である必要はない。そしてその大きさは、相手側の棒状アンテナ（又はＬ字やＵ字型アンテナ等）の大きさにより決定される。このＩＣタグ２００の最も大きな特徴は、誘電体基板３２の略中心に開口部３１を設け、その周回にループアンテナ２０を形成した点である。
図４は、本発明のＩＣタグ２００を備えた光ディスクの外観図である。この光ディスク４００は、光ディスクのベース４１に形成された情報記録領域４２以外の内周部４３に、ＩＣタグ２００を配置したものである。そして光ディスク４００の開口部４０と、ＩＣタグ２００の開口部３１の穴位置を一致させたものである。尚、ＩＣタグ２００は後から光ディスク４００に取り付けても良いし、光ディスク４００の製造段階で一体的に構成しても良い。 Next, each operation will be described with reference to FIGS. When a power supply (not shown) is turned on, the reader / writer 100 starts an operation according to a program stored in the memory device 3 after the initial operation of the control device 2. First, the control device 2 transmits a power supply signal to be supplied to the IC tag 200 and a polling signal from the power amplifier 7. The signal is radiated to the outside as an electromagnetic wave from the rod-shaped antenna 9. Next, the loop antenna 20 of the IC tag 200 receives the power supply signal, and the power generation circuit 22 rectifies the carrier wave to convert it into DC power, and supplies it to all the circuits in the tag. When power is supplied and the control circuit 26 is driven, control is started in accordance with a program stored in the memory device 23.
Next, the control circuit 26 of the IC tag 200 first demodulates the command from the transmission / reception device 21 by the demodulator 25, converts it to a binary signal, and analyzes the command. As a result, when it is recognized that it is called, the response is modulated by the modulator 24 and transmitted from the loop antenna 20 via the transmission / reception device 21.
The reader / writer 100 receives this response with the rod-shaped antenna 9, converts it into a binary code with the detector demodulator 8, analyzes it with the control device 2, and recognizes that the IC tag 200 is a tag conforming to the standard. Thereby, communication is performed between the reader / writer 100 and the IC tag 200 thereafter.
FIG. 3 is an external view showing an example of the IC tag 200 of the present invention. The same components will be described with the same reference numerals. The IC tag 200 includes a dielectric substrate 32 having an opening 31 at the substantially center thereof, a loop antenna 20 formed by patterning on the dielectric substrate 32, and a control for transferring data via the loop antenna 20. IC201 is comprised. The material of the dielectric substrate 32 may be a hard material such as a glass epoxy material or a flexible material such as an FPC. Moreover, although the shape of the opening part 31 and the loop antenna 20 is circular in a figure, the shape does not need to be circular. And the magnitude | size is determined by the magnitude | size of the other party's rod-shaped antenna (or L-shaped, U-shaped antenna, etc.). The greatest feature of the IC tag 200 is that an opening 31 is provided at substantially the center of the dielectric substrate 32 and the loop antenna 20 is formed around the opening 31.
FIG. 4 is an external view of an optical disc provided with the IC tag 200 of the present invention. In this optical disc 400, the IC tag 200 is arranged on the inner peripheral portion 43 other than the information recording area 42 formed on the base 41 of the optical disc. The hole position of the opening 40 of the optical disc 400 and the opening 31 of the IC tag 200 are made to coincide. The IC tag 200 may be attached to the optical disc 400 later, or may be integrally formed at the manufacturing stage of the optical disc 400.

図５は、本発明の棒状アンテナの一例を示す外観構成図である。この棒状アンテナ９は、磁心４５に導線４６をコイル状に巻きつけ、その導線４６の始端４７と終端４８にリーダライタ１００と接続するリード線４９を備えて構成される。
尚、磁心４５の材料としては、比透磁率が大きくヒステリシス現象の小さいものが好ましい。このような条件を満足する磁心として、フェライト、純鉄、珪素鋼、鉄・ニッケル合金、及びダストコアがある。また、導線４６に図では帯状の導線を使用しているが、線状の導線でも構わない。
図６は、本発明の棒状アンテナによるデータ交信方法を説明する図である。図６（ａ）はＩＣタグの近傍に金属が存在する場合を仮定した様子を表す図であり、図６（ｂ）はそのときの原理図である。例えば、棒状アンテナ９の磁心４５に導線４６を巻きつけ、その始端と終端に交流信号５０を供給した場合を考える。例えば、ある瞬間に矢印５１の方向に電流が流れたとすると、磁心４５に磁束５２が発生する。そのとき磁心４５に本発明の光ディスク４００ａ、４００ｂが挿入されており、且つ光ディスク４００ｂの近傍に金属板５３が存在したとする。（この金属板５３は、例えば光ディスクを分類するための境界として使用する）また光ディスク４００ａ、４００ｂにはＩＣタグ２００ａ、２００ｂが取り付けられている。この図から明らかなように、ＩＣタグ２００ａ、２００ｂには金属板５３の存在の如何にかかわらず磁束５２が通過することになる（即ち、ＩＣタグ２００ａ、２００ｂのループアンテナに磁束５２が通過する）。これにより、ループアンテナ２０は磁束５２の磁束変化により起電力が誘起される。このことは言い換えると、光ディスク４００ｂの近傍に金属板５３が存在してもその影響を受けないことを表している。
図６（ｂ）は上記の説明を更に詳しく説明するための原理図である。同じ構成要素には同じ参照番号を付して説明する。ここで、導線４６の巻き数をＴ、交流信号５０の電流をＡ、磁路の抵抗をＲとすると、磁心４５の磁束ψはψ＝ＡＴ／Ｒとなる。そして金属板５３は巻き数が１回のコイルと見なせる。従って、磁束５２が発生すればその影響を殆ど受けることなくＩＣタグ２００ｂのループアンテナ２０に起電力が誘起される。即ち、磁心４５内であれば何枚の光ディスクが存在してもＩＣタグとリーダライタとの交信が可能である。
また、前述より棒状アンテナの磁束ψは、磁心４５に巻きつけられた導線４６の巻き数（Ｎ）と導線４６に流す電流（Ａ）の積（ＡＴ）に比例する。従って、送信パワーを増やさないで所定の磁束を得るには、磁心の長手方向の全体に亘って導線４６を巻きつけ巻き数（Ｎ）を増やす必要がある。また、ループアンテナとの相互誘導作用を強めるには棒状アンテナ９の導線４６とループアンテナが近いほど強くなる。そのためにも磁心の長手方向の全体に亘って導線を巻きつけることは、相互誘導作用を強めるには有効である。 FIG. 5 is an external configuration diagram showing an example of the rod-shaped antenna of the present invention. The rod-shaped antenna 9 includes a lead wire 49 connected to the reader / writer 100 at the start end 47 and the end end 48 of the lead wire 46 wound around a magnetic core 45 in a coil shape.
The material of the magnetic core 45 is preferably a material having a large relative permeability and a small hysteresis phenomenon. Magnetic cores that satisfy such conditions include ferrite, pure iron, silicon steel, iron / nickel alloy, and dust core. Moreover, although the strip | belt-shaped conducting wire is used for the conducting wire 46 in the figure, a linear conducting wire may be used.
FIG. 6 is a diagram for explaining a data communication method using the rod-shaped antenna of the present invention. FIG. 6A is a diagram illustrating a state in which a metal is present in the vicinity of the IC tag, and FIG. 6B is a principle diagram at that time. For example, consider a case where a conducting wire 46 is wound around the magnetic core 45 of the rod-shaped antenna 9 and an AC signal 50 is supplied to the start and end of the lead wire 46. For example, if a current flows in the direction of the arrow 51 at a certain moment, a magnetic flux 52 is generated in the magnetic core 45. At this time, it is assumed that the optical disks 400a and 400b of the present invention are inserted into the magnetic core 45 and the metal plate 53 is present in the vicinity of the optical disk 400b. (The metal plate 53 is used as a boundary for classifying optical disks, for example). Further, IC tags 200a and 200b are attached to the optical disks 400a and 400b. As is clear from this figure, the magnetic flux 52 passes through the IC tags 200a and 200b regardless of the presence of the metal plate 53 (that is, the magnetic flux 52 passes through the loop antennas of the IC tags 200a and 200b). ). As a result, an electromotive force is induced in the loop antenna 20 by a change in the magnetic flux 52. In other words, this means that even if the metal plate 53 exists in the vicinity of the optical disc 400b, it is not affected.
FIG. 6B is a principle diagram for explaining the above description in more detail. The same components will be described with the same reference numerals. Here, if the number of turns of the conducting wire 46 is T, the current of the AC signal 50 is A, and the resistance of the magnetic path is R, the magnetic flux ψ of the magnetic core 45 is ψ = AT / R. The metal plate 53 can be regarded as a coil with one winding. Therefore, if the magnetic flux 52 is generated, an electromotive force is induced in the loop antenna 20 of the IC tag 200b with almost no influence. In other words, the IC tag and the reader / writer can communicate with each other within the magnetic core 45 regardless of the number of optical disks.
Further, as described above, the magnetic flux ψ of the rod-shaped antenna is proportional to the product (AT) of the number of turns (N) of the conducting wire 46 wound around the magnetic core 45 and the current (A) flowing through the conducting wire 46. Therefore, in order to obtain a predetermined magnetic flux without increasing the transmission power, it is necessary to increase the number of turns (N) by winding the conducting wire 46 over the entire length of the magnetic core. Further, in order to strengthen the mutual induction effect with the loop antenna, the closer the conductor 46 of the rod-shaped antenna 9 is to the loop antenna, the stronger it becomes. For this purpose, winding the conductive wire over the entire length of the magnetic core is effective for enhancing the mutual induction effect.

図７は、本発明の第１の実施形態に係る棒状アンテナを備えたリーダライタによる光ディスク管理装置の構成図である。同じ構成要素には同じ参照番号を付して説明する。ＣＤやＤＶＤ等の光ディスクを管理する場合、従来ではラベルの表記で判断するか、ＰＣのドライブ装置に挿入して内容を確認しなければならなかった。また、内容の確認や仕分けが終了したか否かを判断するのが困難であった。本実施形態では、このような管理上の課題を解決するために、光ディスク管理装置３００は、外部にありリーダライタ１００に対してデータの授受を行ってシステム全体を制御するＰＣ１５０と、所定の変調方式に基づく搬送電力の送信とデータの授受をＩＣタグ２００との間で非接触にて行うリーダライタ１００と、光ディスクの軸穴と略同じ径を有する棒状アンテナ９と、本発明のＩＣタグ２００を備えた複数の光ディスク４００と、棒状アンテナ９と複数の光ディスク４００を保持する保持台５７とを備えて構成される。また、ＰＣ１５０とリーダライタ１００はケーブル５５により接続され、リーダライタ１００と棒状アンテナ９はケーブル５６により接続されている。尚、この図ではリーダライタ１００と棒状アンテナ９を別体の構成として説明しているが、両者が一体の構成でも構わない。
次に光ディスク管理装置３００の動作について図７を参照して説明する。まず、管理すべき複数の光ディスク４００を棒状アンテナ９に挿入する。このとき光ディスク４００の表裏の向きはどちらでも構わない。また、光ディスク４００の枚数は積載したときの高さが棒状アンテナ９の長さ以内であれば何枚でも構わない。そしてＰＣ１５０から読み取りコマンドを送信する指令がリーダライタ１００に出されると、リーダライタ１００は図６で説明したように棒状アンテナ９に信号を送信する。それにより棒状アンテナ９の磁心４５から磁束が発生し、光ディスク４００に取り付けられたＩＣタグ２００と交信を開始し、ＩＣタグ２００のメモリに記憶された情報が読み取られる。ＰＣ１５０は各光ディスク４００の情報をリーダライタ１００を介して受信してメモリに記憶する。また、必要であれば、ＰＣ１５０からリーダライタ１００を介して所定の光ディスクのタグ情報を書き換えることもできる。このように、ＩＣタグ２００を備えた光ディスク４００を棒状アンテナ９に挿入するだけで、容易に光ディスク４００を一括管理することができる。 FIG. 7 is a configuration diagram of an optical disc management apparatus using a reader / writer equipped with a rod-shaped antenna according to the first embodiment of the present invention. The same components will be described with the same reference numerals. In the case of managing optical disks such as CDs and DVDs, conventionally, it has been necessary to make a determination based on the label notation or to insert the contents into a PC drive device to check the contents. Also, it has been difficult to determine whether the content confirmation and sorting has been completed. In this embodiment, in order to solve such a management problem, the optical disc management apparatus 300 is provided with a PC 150 that is externally provided to the reader / writer 100 to exchange data and control the entire system, and a predetermined modulation. A reader / writer 100 that performs non-contact transmission and transfer of carrier power and data exchange based on the system, a rod-shaped antenna 9 having substantially the same diameter as the shaft hole of the optical disc, and the IC tag 200 of the present invention. And a plurality of optical discs 400, a rod-shaped antenna 9, and a holding table 57 that holds the plurality of optical discs 400. The PC 150 and the reader / writer 100 are connected by a cable 55, and the reader / writer 100 and the rod-shaped antenna 9 are connected by a cable 56. In this figure, the reader / writer 100 and the rod-shaped antenna 9 are described as separate components, but they may be integrated.
Next, the operation of the optical disc management apparatus 300 will be described with reference to FIG. First, a plurality of optical disks 400 to be managed are inserted into the rod-shaped antenna 9. At this time, the orientation of the front and back of the optical disk 400 may be either. The number of optical disks 400 may be any number as long as the height when loaded is within the length of the rod-shaped antenna 9. When a command for transmitting a read command is issued from the PC 150 to the reader / writer 100, the reader / writer 100 transmits a signal to the rod antenna 9 as described with reference to FIG. As a result, a magnetic flux is generated from the magnetic core 45 of the rod-shaped antenna 9 to start communication with the IC tag 200 attached to the optical disc 400, and information stored in the memory of the IC tag 200 is read. The PC 150 receives the information of each optical disc 400 via the reader / writer 100 and stores it in the memory. If necessary, tag information of a predetermined optical disc can be rewritten from the PC 150 via the reader / writer 100. In this way, the optical disc 400 can be easily managed in a lump by simply inserting the optical disc 400 provided with the IC tag 200 into the rod-shaped antenna 9.

図８は本発明の第２の実施形態に係る棒状アンテナを備えたリーダライタによる光ディスク装置の構成図である。同じ構成要素には同じ参照番号を付して説明する。この光ディスク装置５００は、棒状アンテナ９を内装したディスク回転軸６１と、ＩＣタグ２００を備えた光ディスク４００と、光ディスク４００に情報を読み書きする光ピックアップ６２と、光ピックアップ６２を駆動するディスクドライバ６０と、ＩＣタグ用リーダライタ１００と、全体を制御するＰＣ１５０とを備えて構成される。
図８を参照して動作を説明する。図７の第１の実施形態では複数の光ディスクのＩＣタグ情報を一括して処理したが、本実施形態では、光ディスクに記録された情報の処理と、ＩＣタグの情報の処理を光ディスク１枚単位で同時に行うものである。そのために、通常のディスク操作が可能な機構の他に、ＩＣタグのリーダライタを併せて備えるものである。本実施形態では、例えば、光ディスクのセキュリティを行う場合について説明する。まずディスク回転軸６１に光ディスク４００を装填する。そしてＰＣ１５０がこの光ディスクのＩＣタグに記憶されている情報を読みとった結果、ＩＣタグにコピー禁止の情報が書き込まれていた場合、ＰＣ１５０からコピー動作の指示が出されると、表示部にコピー不可の表示をして動作を停止する。また他の例として、ＩＣタグ２００に光ディスク４００の書き換え不可の領域を指定しておくことにより、光ディスク４００の重要なデータが消失することを未然に防止できる。 FIG. 8 is a block diagram of an optical disc apparatus using a reader / writer equipped with a rod-shaped antenna according to the second embodiment of the present invention. The same components will be described with the same reference numerals. The optical disk device 500 includes a disk rotating shaft 61 with a rod-shaped antenna 9, an optical disk 400 provided with an IC tag 200, an optical pickup 62 for reading and writing information on the optical disk 400, and a disk driver 60 for driving the optical pickup 62. The IC tag reader / writer 100 and a PC 150 for controlling the whole are configured.
The operation will be described with reference to FIG. In the first embodiment of FIG. 7, the IC tag information of a plurality of optical discs is processed in a lump, but in this embodiment, the processing of information recorded on the optical disc and the processing of the information of the IC tag are performed in units of one optical disc. It is done at the same time. For this purpose, an IC tag reader / writer is provided in addition to a mechanism capable of normal disk operation. In the present embodiment, for example, a case where security of an optical disk is performed will be described. First, the optical disk 400 is loaded on the disk rotation shaft 61. As a result of the PC 150 reading the information stored in the IC tag of the optical disc, if copy prohibition information has been written to the IC tag, when the PC 150 issues a copy operation instruction, the display unit cannot copy. Display and stop operation. As another example, by specifying a non-rewritable area of the optical disc 400 in the IC tag 200, important data on the optical disc 400 can be prevented from being lost.

図９は本発明の第３の実施形態に係る棒状アンテナを備えたリーダライタによる金属板管理装置の構成図である。同じ構成要素には同じ参照番号を付して説明する。この金属板管理装置６００は、棒状アンテナ９と、ＩＣタグ２００を備えた複数の金属板６５と、金属板６５を保持する保持台６６と、ＩＣタグ用リーダライタ１００と、全体を制御するＰＣ１５０とを備えて構成される。
図９を参照して動作を説明する。金属にＩＣタグを取り付けた場合、リーダライタからの電波が反射と減衰によりＩＣタグが動作するための必要磁界に達しなくなり、交信が正常に行われないことは既に述べた。管理する品物が金属の場合、ＩＣタグを取り付けただけでは前述と同じ問題により交信が正常に行われない。そこで本実施形態では、金属板６５の所定の場所に開口部６７を設け、その開口部６７と一致するようにＩＣタグ２００の開口部を備えることにより、金属の影響を回避して（その理由は図６を参照）ＩＣタグ２００の情報を読み書きすることができる。本実施形態では、管理する品物が金属の場合について説明したが、特に金属に限定する必要はないのは言うまでもない。 FIG. 9 is a configuration diagram of a metal plate management apparatus using a reader / writer equipped with a bar-shaped antenna according to a third embodiment of the present invention. The same components will be described with the same reference numerals. The metal plate management apparatus 600 includes a rod-shaped antenna 9, a plurality of metal plates 65 including an IC tag 200, a holding table 66 that holds the metal plate 65, an IC tag reader / writer 100, and a PC 150 that controls the whole. And is configured.
The operation will be described with reference to FIG. As described above, when an IC tag is attached to a metal, radio waves from the reader / writer do not reach a necessary magnetic field for the operation of the IC tag due to reflection and attenuation, and communication is not normally performed. If the item to be managed is a metal, communication cannot be performed normally due to the same problem as described above just by attaching an IC tag. Therefore, in this embodiment, an opening 67 is provided at a predetermined location of the metal plate 65, and the opening of the IC tag 200 is provided so as to coincide with the opening 67, thereby avoiding the influence of metal (the reason). (See FIG. 6) The information of the IC tag 200 can be read and written. In the present embodiment, the case where the item to be managed is a metal has been described, but it is needless to say that it is not particularly limited to a metal.

本発明のリーダライタの構成を示すブロック図である。It is a block diagram which shows the structure of the reader / writer of this invention. 本発明のＩＣタグの構成を示すブロック図である。It is a block diagram which shows the structure of the IC tag of this invention. 本発明のＩＣタグ２００の一例を示す外観図である。It is an external view which shows an example of IC tag 200 of this invention. 本発明のＩＣタグ２００を備えた光ディスクの外観図である。It is an external view of an optical disk provided with the IC tag 200 of the present invention. 本発明の棒状アンテナの一例を示す外観構成図である。It is an external appearance block diagram which shows an example of the rod-shaped antenna of this invention. 本発明の棒状アンテナによるデータ交信方法を説明する図である。It is a figure explaining the data communication method by the rod-shaped antenna of this invention. 本発明の第１の実施形態に係る棒状アンテナを備えたリーダライタによる光ディスク管理装置の構成図である。It is a block diagram of the optical disk management apparatus by the reader / writer provided with the rod-shaped antenna which concerns on the 1st Embodiment of this invention. 本発明の第２の実施形態に係る棒状アンテナを備えたリーダライタによる光ディスク装置の構成図である。It is a block diagram of the optical disk apparatus by the reader / writer provided with the rod-shaped antenna which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施形態に係る棒状アンテナを備えたリーダライタによる金属板管理装置の構成図である。It is a block diagram of the metal plate management apparatus by the reader / writer provided with the rod-shaped antenna which concerns on the 3rd Embodiment of this invention.

符号の説明Explanation of symbols

９ 棒状アンテナ、５７ 保持台、１００ リーダライタ、１５０ コンピュータ、２００ ＩＣタグ、３００ 光ディスク管理装置、４００ 光ディスク   9 Rod Antenna, 57 Holding Base, 100 Reader / Writer, 150 Computer, 200 IC Tag, 300 Optical Disk Management Device, 400 Optical Disk

Claims (7)

所定の変調方式に基づく搬送電力の送信とデータの授受をＩＣタグとの間で非接触にて行うリーダライタであって、
前記リーダライタは棒状の磁心に導線を所定回数巻きつけた棒状アンテナを備え、前記ＩＣタグのループアンテナと前記棒状アンテナの磁心が互いに挿通し合うことにより、前記ＩＣタグに起電力を誘起して、前記ＩＣタグとの間で所定の変調方式に基づく搬送電力の送信とデータの授受を行うことを特徴とするリーダライタ。 A reader / writer that performs carrier power transmission and data exchange based on a predetermined modulation method in a contactless manner with an IC tag,
The reader / writer includes a rod-shaped antenna in which a lead wire is wound around a rod-shaped magnetic core a predetermined number of times, and an electromotive force is induced in the IC tag by inserting the loop antenna of the IC tag and the magnetic core of the rod-shaped antenna into each other. A reader / writer which transmits carrier power and exchanges data with the IC tag based on a predetermined modulation method. 前記棒状アンテナの磁心材料は、フェライト、純鉄、珪素鋼、鉄・ニッケル合金、及びダストコアであることを特徴とする請求項１に記載のリーダライタ。   The reader / writer according to claim 1, wherein the magnetic core material of the rod-shaped antenna is ferrite, pure iron, silicon steel, iron / nickel alloy, and dust core. 前記棒状アンテナは、前記棒状磁心の長手方向の全長又は一部に亘って前記導線を所定回数巻きつけたことを特徴とする請求項１又は２に記載のリーダライタ。   3. The reader / writer according to claim 1, wherein the rod-shaped antenna is formed by winding the conducting wire a predetermined number of times over the entire length or a part of the rod-shaped magnetic core in the longitudinal direction. 請求項１記載のリーダライタのリードライト対象物としての前記ＩＣタグは、誘電体基板と、該誘電体基板の所定の位置に設けた開口部の周縁に導線を所定回数周回して形成したループアンテナと、該ループアンテナを介して所定の変調方式に基づく搬送電力の送信とデータの授受を制御する集積回路とを備えたことを特徴とするＩＣタグ。   2. The IC tag as a read / write object of the reader / writer according to claim 1, wherein a loop is formed by winding a conductive wire around a dielectric substrate and a periphery of an opening provided at a predetermined position of the dielectric substrate a predetermined number of times. An IC tag, comprising: an antenna; and an integrated circuit that controls transmission of carrier power and transmission / reception of data based on a predetermined modulation system via the loop antenna. 請求項４記載のＩＣタグの前記集積回路のメモリに当該ＩＣタグの取付対象物に関する必要情報を記憶し、当該ＩＣタグの開口部と前記取付対象物の開口部との位置関係が一致するように構成することにより、前記取付対象物の開口部を請求項１記載のリーダライタの前記棒状アンテナに挿入、若しくは前記棒状アンテナを前記取付対象物の開口部に挿入して前記取付対象物の必要情報の読み書きを行うことを特徴とする物品管理装置。   5. Necessary information related to an attachment object of the IC tag is stored in the memory of the integrated circuit of the IC tag according to claim 4, so that the positional relationship between the opening of the IC tag and the opening of the attachment object matches. The opening of the attachment object is inserted into the rod-shaped antenna of the reader / writer according to claim 1, or the rod-shaped antenna is inserted into the opening of the attachment object so that the attachment object is necessary. An article management apparatus that reads and writes information. 請求項２又は３に記載の棒状アンテナをディスク回転軸内に形成したディスク機構部と、請求項４に記載のＩＣタグを備えた光ディスクと、請求項１乃至３の何れか一項に記載のリーダライタとを備え、
前記光ディスク機構部に前記光ディスクを装填することにより、該光ディスクのＩＣタグに記憶された情報を読み書きすると共に、該光ディスクの記録情報を読み書きすることを特徴とする光ディスク装置。 The disk mechanism part which formed the rod-shaped antenna of Claim 2 or 3 in the disk rotating shaft, the optical disk provided with the IC tag of Claim 4, and any one of Claims 1 thru | or 3 With a reader / writer,
An optical disc apparatus, wherein the optical disc is loaded into the optical disc mechanism section to read / write information stored in an IC tag of the optical disc and read / write information recorded on the optical disc. 前記ＩＣタグは、前記光ディスクに貼付若しくは一体に形成されていることを特徴とする請求項６に記載の光ディスク装置。   The optical disc apparatus according to claim 6, wherein the IC tag is attached to or integrally formed with the optical disc.
JP2003406003A 2003-12-04 2003-12-04 Reader/writer, ic tag, article control device, and optical disk device Pending JP2005165839A (en)

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