JP2002109493A - Ic chip and ic card - Google Patents
Ic chip and ic cardInfo
- Publication number
- JP2002109493A JP2002109493A JP2000301777A JP2000301777A JP2002109493A JP 2002109493 A JP2002109493 A JP 2002109493A JP 2000301777 A JP2000301777 A JP 2000301777A JP 2000301777 A JP2000301777 A JP 2000301777A JP 2002109493 A JP2002109493 A JP 2002109493A
- Authority
- JP
- Japan
- Prior art keywords
- card
- chip
- contact state
- supplied
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0707—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0712—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of triggering distinct operating modes or functions dependent on the strength of an energy or interrogation field in the proximity of the record carrier
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＩＣチップ及びＩ
Ｃカードに関するものである。TECHNICAL FIELD The present invention relates to an IC chip and an IC chip.
It concerns the C card.
【０００２】[0002]
【従来の技術】近年、ＩＣカードに搭載されるＩＣチッ
プの高性能化に伴い、複数のアプリケーションを実行す
ることができるＩＣカードが実用化されている。このよ
うなＩＣカードは、アプリケーション毎に専用のリーダ
ライタ〔以下、ＣＡＤ（ＣＡＲＤ ＡＣＣＥＳＳ ＤＥ
ＶＩＣＥ）とする〕から電源を得るとともに、処理情報
のやりとりを行いながら、目的の処理を実行する。2. Description of the Related Art In recent years, IC cards capable of executing a plurality of applications have been put to practical use as the performance of IC chips mounted on the IC cards has improved. Such an IC card is provided with a dedicated reader / writer for each application [hereinafter referred to as CAD (CARD ACCESS DES).
VICE)], power is obtained, and the target processing is executed while exchanging processing information.
【０００３】ＩＣカードに対応するアプリケーション
は、その用途毎に、必要とする仕様が異なり、例えば、
あるアプリケーションでは、処理速度は遅くても消費電
力を小さく抑えることが優先するが、別のアプリケーシ
ョンでは、消費電力が大きくても処理速度を速くするこ
とが優先する場合がある。An application corresponding to an IC card requires different specifications for each application.
In some applications, it is a priority to reduce power consumption even if the processing speed is slow, but in other applications there is a case where priority is given to increasing the processing speed even when the power consumption is large.
【０００４】特に、データの暗号化及び複合を行う処理
は、計算量が多いので、ソフトウェア上で計算を行う
と、処理速度が遅くなってしまう。この場合に、専用の
ハードウェアとしてＩＣカード内のコプロセッサを使用
すれば、処理速度を速くすることができる。但し、この
場合には、消費電力が増大してしまう。[0004] In particular, the processing for encrypting and decrypting data requires a large amount of calculation, so that if the calculation is performed on software, the processing speed will be reduced. In this case, if a coprocessor in the IC card is used as dedicated hardware, the processing speed can be increased. However, in this case, the power consumption increases.
【０００５】このようなことは、ＣＡＤそのものの制限
から発生する場合もある。例えば、携帯電話をＣＡＤと
しても利用するようなＩＣカードでは、供給可能な電圧
が限られており、消費電力を小さく抑えることが要求さ
れるが、そのカードを他のＣＡＤで使用する場合には、
供給可能な電圧に余裕があり、処理速度を速めることが
望まれる。[0005] Such a situation may occur due to the limitation of the CAD itself. For example, in an IC card that uses a mobile phone as a CAD, the voltage that can be supplied is limited, and it is required to keep the power consumption low. However, when the card is used in another CAD, ,
There is room for the voltage that can be supplied, and it is desired to increase the processing speed.
【０００６】[0006]
【発明が解決しようとする課題】しかし、従来のＩＣカ
ードに搭載されているＩＣチップでは、全てのアプリケ
ーション又はＣＡＤに対応するために、最低限の動作条
件が予め設定されていた。そのため、使用するアプリケ
ーション又はＣＡＤに最適な動作条件で処理を行うこと
ができず、ＩＣチップのもつ性能を生かし切れないとい
う問題があった。また、ＩＣチップの高性能化が進んで
いるにもかかわらず、最低限の動作条件でしか処理を行
えず、処理を高速化するには、ＩＣカード，ＣＡＤ及び
アプリケーションからなるＩＣカードシステム全体を変
更する必要があった。However, in an IC chip mounted on a conventional IC card, a minimum operating condition is set in advance in order to support all applications or CAD. For this reason, processing cannot be performed under the optimum operating conditions for the application or CAD to be used, and the performance of the IC chip cannot be fully utilized. In addition, despite the high performance of IC chips, processing can be performed only under the minimum operating conditions. To speed up processing, the entire IC card system consisting of IC cards, CAD, and applications must be implemented. Needed to change.
【０００７】更に、ＩＣカードに使用される場合に限ら
ず、ＩＣチップは、予め設定された条件で動作している
ので、例えば、ＩＣチップに供給されている電源の能力
が低下した場合などに、処理速度を遅くして消費電力を
低く抑えて動作すれば動作可能な場合であっても、高速
で処理を行う設定となっているため動作することができ
なかった。このようなことは、特に小型の携帯可能な機
器において、内蔵するバッテリーの残量不足や、温度低
下によるバッテリーの能力低下等の場合に生じ、電圧等
が所定のレベル以下になると、バッテリーチェック機能
によって、それ以降の処理を受けつけず、機器を使用す
ることができないという問題があった。この場合にも、
機器の動作を優先する動作条件（低い電圧で動作可能な
条件）に予め設定しておくと、電源の状態が良好な場合
であっても、処理速度が遅くなるという問題があった。[0007] Further, not only when the IC chip is used for an IC card but also because the IC chip operates under preset conditions, for example, when the capability of the power supplied to the IC chip is reduced. However, even if the operation is possible if the processing speed is reduced and the power consumption is suppressed, even if the operation is possible, the operation cannot be performed because the processing is set to be performed at a high speed. Such a problem occurs in a small portable device, particularly when the remaining capacity of the built-in battery is insufficient or the battery capacity is reduced due to a temperature drop. When the voltage or the like falls below a predetermined level, the battery check function is performed. Therefore, there has been a problem that the apparatus cannot be used because the subsequent processing is not accepted. Again, in this case,
If the operation conditions (conditions that enable operation at a low voltage) to prioritize the operation of the device are set in advance, there is a problem that the processing speed is reduced even when the state of the power supply is good.
【０００８】本発明の課題は、電力やクロック周波数等
の外部から得られる動作環境が変化した場合に、その動
作環境の変化に応じて自己の動作条件を変更して最適な
設定にすることができるＩＣチップ及びＩＣカードを提
供することである。[0008] An object of the present invention is to change the operating conditions according to the change in the operating environment obtained from the outside such as the power and the clock frequency to obtain optimum settings. It is to provide an IC chip and an IC card which can be used.
【０００９】[0009]
【課題を解決するための手段】本発明は、以下のような
解決手段により、前記課題を解決する。なお、理解を容
易にするために、本発明の実施形態に対応する符号を付
して説明するが、これに限定されるものではない。すな
わち、請求項１の発明は、接触状態及び／又は非接触状
態で外部から受信している動作クロック周波数を検出す
る第１の検出手段（１０）と、前記第１の検出手段が検
出した検出周波数に基づいて、動作条件を設定する第１
の動作条件設定部（３０）と、を備えるＩＣチップ（４
０）である。The present invention solves the above-mentioned problems by the following means. In addition, in order to make it easy to understand, description is given with reference numerals corresponding to the embodiment of the present invention, but the present invention is not limited to this. That is, the first aspect of the present invention provides a first detecting means (10) for detecting an operation clock frequency received from the outside in a contact state and / or a non-contact state, and a detection detected by the first detecting means. First to set operating conditions based on frequency
Operating condition setting unit (30)
0).
【００１０】請求項２の発明は、接触状態及び／又は非
接触状態で外部から供給されている電圧値及び／又は電
流値を検出する第２の検出手段（２０）と、第２の検出
手段が検出した検出電圧値及び／又は検出電流値に基づ
いて、動作条件を設定する第２の動作条件設定部（３
０）と、を備えるＩＣチップ（４０）である。According to a second aspect of the present invention, there is provided a second detecting means for detecting a voltage value and / or a current value supplied from outside in a contact state and / or a non-contact state, and a second detecting means. A second operating condition setting unit (3) for setting operating conditions based on the detected voltage value and / or detected current value detected by
(0).
【００１１】請求項３の発明は、接触状態及び／又は非
接触状態で外部から受信している動作クロック周波数を
検出する第１の検出手段（１０）と、接触状態及び／又
は非接触状態で外部から供給されている電圧値及び／又
は電流値を検出する第２の検出手段（２０）と、前記第
１及び第２の検出手段の検出結果に基づいて、動作条件
を設定する第３の動作条件設定部（３０）と、を備える
ＩＣチップ（４０）である。According to a third aspect of the present invention, there is provided a first detecting means (10) for detecting an operation clock frequency received from outside in a contact state and / or a non-contact state, and a first detection means (10) for detecting a contact state and / or a non-contact state. A second detection means (20) for detecting a voltage value and / or a current value supplied from the outside, and a third setting operation condition based on the detection results of the first and second detection means. An IC chip (40) including an operating condition setting unit (30).
【００１２】請求項４の発明は、請求項１から請求項３
までのいずれか１項に記載のＩＣチップ（４０）におい
て、前記第１〜第３の動作条件設定部（３０）は、動作
可能な範囲内で高速な処理速度を得られるように、処理
の倍率を設定すること、を特徴とするＩＣチップ（４
０）である。According to a fourth aspect of the present invention, there is provided the first to third aspects.
In the IC chip (40) according to any one of the above, the first to third operation condition setting units (30) may perform processing so that a high processing speed can be obtained within an operable range. IC chip (4)
0).
【００１３】請求項５の発明は、カード基材（５０）
と、前記カード基材に設けられた請求項１から請求項４
までのいずれか１項に記載のＩＣチップ（４０）と、を
備えるＩＣカード（６０）である。According to a fifth aspect of the present invention, there is provided a card base material (50).
And the card base material is provided on the card base material.
An IC card (60) comprising: the IC chip (40) according to any one of (1) to (4).
【００１４】[0014]
【発明の実施の形態】以下、図面等を参照しながら、本
発明の実施の形態について、更に詳しく説明する。 （実施形態）図１は、本発明によるＩＣチップを備えた
ＩＣカードの実施形態を説明する図である。ＩＣカード
６０は、カード基材５０とＩＣチップ４０とを備え、図
示しない外部のＣＡＤから電源及びクロック周波数等を
得て、各種処理を行うカードである。なお、ＣＡＤとの
接続は、接点などが接触して行う接触式であってもよい
し、アンテナコイルを介して非接触によって行う非接触
式であってもよい。Embodiments of the present invention will be described below in more detail with reference to the drawings. (Embodiment) FIG. 1 is a view for explaining an embodiment of an IC card having an IC chip according to the present invention. The IC card 60 is a card that includes a card base material 50 and an IC chip 40 and obtains a power supply, a clock frequency, and the like from an external CAD (not shown) and performs various processes. Note that the connection with the CAD may be a contact type that is performed by contact with a contact or the like, or a non-contact type that is performed by non-contact through an antenna coil.
【００１５】ＩＣチップ４０は、第１の検出手段１０
と、第２の検出手段２０と、動作条件設定部３０とを有
している。ＩＣチップ４０は、クロック周波数と動作電
圧値との組合せにより、以下の表１に示す条件におい
て、動作することができる。The IC chip 40 includes the first detecting means 10
And an operating condition setting unit 30. The IC chip 40 can operate under the conditions shown in Table 1 below, depending on the combination of the clock frequency and the operating voltage value.
【００１６】[0016]
【表１】 [Table 1]
【００１７】第１の検出手段１０は、ＣＡＤから供給さ
れているクロック周波数を検出する検出機である。図２
（ａ）は、第１の検出手段１０を説明する図である。第
１の検出手段１０は、検出する周波数帯の異なる５つの
周波数検知機１１〜１５を有し、８ビットの供給電圧判
別用のポート（ＲＥＧＣＬＫ）に検出結果を出力する。The first detecting means 10 is a detector for detecting the clock frequency supplied from the CAD. FIG.
(A) is a figure explaining the 1st detection means 10. The first detecting means 10 has five frequency detectors 11 to 15 having different frequency bands to be detected, and outputs a detection result to an 8-bit supply voltage discriminating port (REGCLK).
【００１８】周波数検知機１１は、１ＭＨｚ未満の周波
数が供給されたときに、供給クロック判別用のポート
（ＲＥＧＣＬＫ）の対応するビット（ｂ１）を１にす
る。When a frequency lower than 1 MHz is supplied, the frequency detector 11 sets the corresponding bit (b1) of the supplied clock discrimination port (REGCLK) to 1.
【００１９】周波数検知機１２は、１ＭＨｚ〜３ＭＨｚ
の周波数が供給されたときに、供給クロック判別用のポ
ート（ＲＥＧＣＬＫ）の対応するビット（ｂ２）を１に
する。The frequency detector 12 has a frequency of 1 MHz to 3 MHz.
When the frequency is supplied, the corresponding bit (b2) of the supply clock discrimination port (REGCLK) is set to 1.
【００２０】周波数検知機１３は、３ＭＨｚ〜４ＭＨｚ
の周波数が供給されたときに、供給クロック判別用のポ
ート（ＲＥＧＣＬＫ）の対応するビット（ｂ３）を１に
する。The frequency detector 13 has a frequency of 3 MHz to 4 MHz.
, The corresponding bit (b3) of the supply clock discrimination port (REGCLK) is set to 1.
【００２１】周波数検知機１４は、４ＭＨｚ〜６ＭＨｚ
の周波数が供給されたときに、供給クロック判別用のポ
ート（ＲＥＧＣＬＫ）の対応するビット（ｂ４）を１に
する。The frequency detector 14 has a frequency of 4 MHz to 6 MHz.
, The corresponding bit (b4) of the supply clock discrimination port (REGCLK) is set to 1.
【００２２】周波数検知機１５は、６ＭＨｚ以上の周波
数が供給されたときに、供給クロック判別用のポート
（ＲＥＧＣＬＫ）の対応するビット（ｂ５）を１にす
る。When a frequency of 6 MHz or more is supplied, the frequency detector 15 sets the corresponding bit (b5) of the supplied clock discrimination port (REGCLK) to 1.
【００２３】表２は、供給クロック判別用のポート（Ｒ
ＥＧＣＬＫ）の各ビットの意味を説明する表である。表
２を参照することにより、第１の検出手段１０によっ
て、いずれのビットが１とされたかによって、実際に供
給されているクロック周波数を知ることができる。Table 2 shows the ports (R
3 is a table for explaining the meaning of each bit of EGCLK). By referring to Table 2, the first detection means 10 can know the clock frequency actually supplied depending on which bit is set to 1.
【００２４】[0024]
【表２】 [Table 2]
【００２５】図２（ｂ）は、第２の検出手段２０を説明
する図である。第２の検出手段２０は、検出する電圧域
の異なる５つの電圧検知機２１〜２５を有し、８ビット
の供給電圧判別用のポート（ＲＥＧＶＣＣ）に検出結果
を出力する。FIG. 2B is a diagram for explaining the second detecting means 20. The second detection means 20 has five voltage detectors 21 to 25 having different voltage ranges to be detected, and outputs a detection result to an 8-bit supply voltage determination port (REGVCC).
【００２６】電圧検知機２１は、１Ｖ未満の電圧が供給
されたときに、供給クロック判別用のポート（ＲＥＧＶ
ＣＣ）の対応するビット（ｂ１）を１にする。When a voltage of less than 1 V is supplied, the voltage detector 21 determines a supply clock (REGV).
CC), the corresponding bit (b1) is set to 1.
【００２７】電圧検知機２２は、１Ｖ〜２Ｖの電圧が供
給されたときに、供給クロック判別用のポート（ＲＥＧ
ＶＣＣ）の対応するビット（ｂ２）を１にする。When a voltage of 1 V to 2 V is supplied, the voltage detector 22 determines a supply clock discrimination port (REG).
The corresponding bit (b2) of (VCC) is set to 1.
【００２８】電圧検知機２３は、２Ｖ〜４Ｖの電圧が供
給されたときに、供給クロック判別用のポート（ＲＥＧ
ＶＣＣ）の対応するビット（ｂ３）を１にする。When a voltage of 2 V to 4 V is supplied, the voltage detector 23 detects a supply clock (REG).
The corresponding bit (b3) of (VCC) is set to 1.
【００２９】電圧検知機２４は、４Ｖ〜６Ｖの電圧が供
給されたときに、供給クロック判別用のポート（ＲＥＧ
ＶＣＣ）の対応するビット（ｂ４）を１にする。When a voltage of 4 V to 6 V is supplied, the voltage detector 24 determines a supply clock discrimination port (REG).
The corresponding bit (b4) of (VCC) is set to 1.
【００３０】電圧検知機２５は、６Ｖ以上の電圧が供給
されたときに、供給クロック判別用のポート（ＲＥＧＶ
ＣＣ）の対応するビット（ｂ５）を１にする。When a voltage of 6 V or more is supplied, the voltage detector 25 supplies a supply clock discriminating port (REGV).
CC), the corresponding bit (b5) is set to 1.
【００３１】表３は、供給電圧判別用のポート（ＲＥＧ
ＶＣＣ）の各ビットの意味を説明する表である。表３を
参照することにより、第２の検出手段２０によって、い
ずれのビットが１とされたかによって、実際に供給され
ている電圧を知ることができる。Table 3 shows a port (REG) for determining the supply voltage.
5 is a table for explaining the meaning of each bit of (VCC). By referring to Table 3, the voltage actually supplied can be known by the second detection means 20 depending on which bit is set to 1.
【００３２】[0032]
【表３】 [Table 3]
【００３３】動作条件設定部３０は、第１の検出手段１
０及び第２の検出手段２０から得られた実際に供給され
ている電圧値及び実際に供給されているクロック周波数
に基づいて、ＩＣチップ４０の動作条件を設定する部分
（第３の動作条件設定部）である。The operating condition setting section 30 includes a first detecting means 1
A part for setting the operating conditions of the IC chip 40 based on the actually supplied voltage value and the actually supplied clock frequency obtained from the second detecting means 20 (third operating condition setting). Part).
【００３４】実際に供給される電圧及びクロック周波数
は、例えばＣＡＤが異なれば変わる。ここで、実際に例
を挙げて、本実施形態のＩＣチップ４０の動作を説明す
る。 （実施例１）あるＣＡＤ（ＣＡＤ−１とする）から電圧
及びクロック周波数を供給されると、第１の検出手段１
０及び第２の検出手段２０が、ＣＡＤ−１から実際に供
給されている周波数及び電圧を検出し、その結果を出力
する。供給クロック判別用のポート（ＲＥＧＣＬＫ）
に、０００００１００が出力され、供給電圧判別用のポ
ート（ＲＥＧＶＣＣ）に、００００００１０が出力され
たとすると、表２，３から、クロック周波数は、３〜４
ＭＨｚであり、電圧値は、１〜２Ｖであることがわか
る。ここで、動作条件設定部３０は、ＩＣカード４０が
この条件下で動作可能な範囲で最高の処理速度が得られ
る動作条件を抽出する。表１を参照すると、電圧１．８
Ｖ，クロック周波数３．５ＭＨｚ，２倍で動作可能であ
ることがわかる。したがって、動作条件設定部３０は、
この条件でＩＣチップ４０が駆動するように、設定を行
う。The actually supplied voltage and clock frequency change when, for example, the CAD is different. Here, the operation of the IC chip 40 of the present embodiment will be described using an actual example. (Example 1) When a voltage and a clock frequency are supplied from a certain CAD (referred to as CAD-1), the first detecting means 1
The zero and second detection means 20 detects the frequency and voltage actually supplied from CAD-1, and outputs the result. Port for determining supply clock (REGCLK)
If 00000100 is output to the port and 00000010 is output to the supply voltage discriminating port (REGVCC), from Tables 2 and 3, the clock frequency is 3 to 4
MHz, and the voltage value is found to be 1-2 V. Here, the operating condition setting unit 30 extracts an operating condition at which the highest processing speed is obtained within a range in which the IC card 40 can operate under this condition. Referring to Table 1, the voltage 1.8
It can be seen that operation is possible at V, a clock frequency of 3.5 MHz, and twice. Therefore, the operation condition setting unit 30
The setting is performed so that the IC chip 40 is driven under these conditions.
【００３５】（実施例２）次に、別のＣＡＤ（ＣＡＤ−
２とする）から電圧及びクロック周波数を供給された場
合を例に挙げて説明する。この場合も、実施例１と同様
にして、供給クロック判別用のポート（ＲＥＧＣＬＫ）
に、００００１０００が出力され、供給電圧判別用のポ
ート（ＲＥＧＶＣＣ）に、００００１０００が出力され
たとする。この値から、供給されているクロック周波数
は、４〜６ＭＨｚであり、電圧値は、４〜６Ｖであるこ
とがわかる。よって、上記と同様にして、動作条件設定
部３０は、ＩＣチップ４０が電圧５Ｖ，クロック周波数
４．９ＭＨｚ，４倍で動作するように設定を行う。(Embodiment 2) Next, another CAD (CAD-
2) will be described as an example. In this case, similarly to the first embodiment, the supply clock discriminating port (REGCLK)
00001000, and 00001000 is output to the supply voltage determination port (REGVCC). From this value, it can be seen that the supplied clock frequency is 4 to 6 MHz and the voltage value is 4 to 6 V. Therefore, in the same manner as described above, the operating condition setting unit 30 performs settings so that the IC chip 40 operates at a voltage of 5 V, a clock frequency of 4.9 MHz, and four times.
【００３６】本実施形態によれば、供給される電圧及び
クロック周波数が変化しても、供給されている電圧及び
クロック周波数の範囲内において最適な動作条件を設定
することができるので、種類の異なるアプリケーション
及びＣＡＤに対応するＩＣカードに備わるＩＣカードで
あっても、各アプリケーション及びＣＡＤに応じて、常
に処理速度を高くすることができる。According to the present embodiment, even if the supplied voltage and the clock frequency change, the optimum operating conditions can be set within the range of the supplied voltage and the clock frequency. Even with an IC card provided in an IC card corresponding to an application and CAD, the processing speed can always be increased according to each application and CAD.
【００３７】（変形形態）以上説明した実施形態に限定
されることなく、種々の変形や変更が可能であって、そ
れらも本発明の均等の範囲内である。 （１）本実施形態において、第２の検出手段２０は、電
圧値を検出する例を示したが、これに限らず、例えば、
電流値も検出するようにしてもよい。(Modifications) Various modifications and changes are possible without being limited to the above-described embodiment, and these are also within the equivalent scope of the present invention. (1) In the present embodiment, the example in which the second detection means 20 detects the voltage value has been described. However, the present invention is not limited to this.
The current value may also be detected.
【００３８】（２）本実施形態において、第１及び第２
の検出手段１０，２０は、所定のレンジの周波数又は電
圧値を検知する検知機を複数組み合わせた例を示した
が、これに限らず、直接周波数又は電圧値を測定できる
測定部を設けてもよい。(2) In the present embodiment, the first and second
Has been described as an example in which a plurality of detectors that detect a frequency or a voltage value in a predetermined range are combined. However, the present invention is not limited to this, and a measuring unit that can directly measure a frequency or a voltage value may be provided. Good.
【００３９】（３）本実施形態において、ＩＣカード
に、本発明を適用した例を示したが、これに限らず、例
えば、供給される電源等の条件が変動する携帯機器等に
使用されるＩＣチップであってもよい。(3) In the present embodiment, an example in which the present invention is applied to an IC card has been described. However, the present invention is not limited to this, and is used, for example, in a portable device or the like in which conditions such as supplied power vary. It may be an IC chip.
【００４０】（４）本実施形態において、第１の検出手
段１０と、第２の検出手段２０とを備える例を示した
が、これに限らず、例えば、第１の検出手段１０のみを
備えてもよいし、第２の検出手段２０のみを備えてもよ
い。(4) In the present embodiment, an example is shown in which the first detecting means 10 and the second detecting means 20 are provided. However, the present invention is not limited to this. For example, only the first detecting means 10 is provided. Alternatively, only the second detection means 20 may be provided.
【００４１】[0041]
【発明の効果】以上詳しく説明したように、請求項１の
発明によれば、第１の検出手段が検出した検出周波数に
基づいて、動作条件を設定する第１の動作条件設定部を
備えるので、実際に供給されているクロック周波数に基
づいて、最適な動作条件で動作することができる。As described above in detail, according to the first aspect of the present invention, since the first operation condition setting section for setting the operation condition based on the detection frequency detected by the first detection means is provided. It is possible to operate under optimum operating conditions based on the actually supplied clock frequency.
【００４２】請求項２の発明によれば、第２の検出手段
が検出した検出電圧値及び／又は検出電流値に基づい
て、動作条件を設定する第２の動作条件設定部を備える
ので、実際に供給されている電圧値等に基づいて、最適
な動作条件で動作することができる。According to the second aspect of the present invention, there is provided the second operating condition setting section for setting the operating condition based on the detected voltage value and / or the detected current value detected by the second detecting means. Can be operated under optimum operating conditions based on the voltage value and the like supplied to the power supply.
【００４３】請求項３の発明によれば、第１及び第２の
検出手段の検出結果に基づいて、動作条件を設定する第
３の動作条件設定部を備えるので、実際に供給されてい
るクロック周波数及び電圧値等に基づいて、最適な動作
条件で動作することができる。According to the third aspect of the present invention, since the third operating condition setting section for setting the operating condition based on the detection results of the first and second detecting means is provided, the clock actually supplied is provided. It is possible to operate under optimum operating conditions based on the frequency, the voltage value, and the like.
【００４４】請求項４の発明によれば、第１〜第３の動
作条件設定部は、動作可能な範囲内で高速な処理速度を
得られるように、処理の倍率を設定するので、処理速度
を無駄に遅くすることなく、常に高速な処理を行うこと
ができる。According to the fourth aspect of the present invention, the first to third operating condition setting units set the processing magnification so as to obtain a high processing speed within an operable range. Can be always performed at high speed without wasting time.
【００４５】請求項５の発明によれば、カード基材に設
けられた請求項１から請求項４までのいずれか１項に記
載のＩＣチップを備えるＩＣカードであるので、アプリ
ケーション又はリーダライタ毎に最適な動作を行うこと
ができる。According to the fifth aspect of the present invention, since the IC card is provided with the IC chip according to any one of the first to fourth aspects provided on a card base material, the IC card is provided for each application or reader / writer. Optimum operation can be performed.
【図１】本発明によるＩＣチップを備えたＩＣカードの
実施形態を説明する図である。FIG. 1 is a diagram illustrating an embodiment of an IC card provided with an IC chip according to the present invention.
【図２】第１の検出手段１０及び第２の検出手段２０を
説明する図である。FIG. 2 is a diagram illustrating a first detection unit 10 and a second detection unit 20.
１０ 第１の検出手段 ２０ 第２の検出手段 ３０ 動作条件設定部 ４０ ＩＣチップ ５０ カード基材 ６０ ＩＣカード DESCRIPTION OF SYMBOLS 10 1st detection means 20 2nd detection means 30 Operating condition setting part 40 IC chip 50 Card base material 60 IC card
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2C005 MA20 MA22 MA29 MB04 MB05 NA02 NA08 NA09 SA26 SA27 TA21 TA22 5B035 AA00 BB09 BC00 CA11 5B079 BA01 BB10 BC03 CC13 DD08 DD20 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 MA20 MA22 MA29 MB04 MB05 NA02 NA08 NA09 SA26 SA27 TA21 TA22 5B035 AA00 BB09 BC00 CA11 5B079 BA01 BB10 BC03 CC13 DD08 DD20
Claims (5)
ら受信している動作クロック周波数を検出する第１の検
出手段と、 前記第１の検出手段が検出した検出周波数に基づいて、
動作条件を設定する第１の動作条件設定部と、 を備えるＩＣチップ。A first detection unit for detecting an operation clock frequency received from outside in a contact state and / or a non-contact state; and a detection frequency detected by the first detection unit.
An IC chip comprising: a first operation condition setting unit that sets operation conditions.
ら供給されている電圧値及び／又は電流値を検出する第
２の検出手段と、 前記第２の検出手段が検出した検出電圧値及び／又は検
出電流値に基づいて、動作条件を設定する第２の動作条
件設定部と、 を備えるＩＣチップ。2. A second detection means for detecting a voltage value and / or a current value supplied from outside in a contact state and / or a non-contact state, and a detection voltage value detected by the second detection means. And / or a second operating condition setting unit that sets operating conditions based on the detected current value.
ら受信している動作クロック周波数を検出する第１の検
出手段と、 接触状態及び／又は非接触状態で外部から供給されてい
る電圧値及び／又は電流値を検出する第２の検出手段
と、 前記第１及び第２の検出手段の検出結果に基づいて、動
作条件を設定する第３の動作条件設定部と、 を備えるＩＣチップ。3. A first detecting means for detecting an operation clock frequency received from the outside in a contact state and / or a non-contact state, and a voltage value supplied from outside in a contact state and / or a non-contact state. And / or a second detection means for detecting a current value, and a third operation condition setting unit for setting an operation condition based on a detection result of the first and second detection means.
項に記載のＩＣチップにおいて、 前記第１〜第３の動作条件設定部は、動作可能な範囲内
で高速な処理速度を得られるように、処理の倍率を設定
すること、 を特徴とするＩＣチップ。4. One of claims 1 to 3
3. The IC chip according to claim 1, wherein the first to third operation condition setting units set a processing magnification so as to obtain a high processing speed within an operable range. Chips.
のいずれか１項に記載のＩＣチップと、 を備えるＩＣカード。5. An IC card, comprising: a card base; and the IC chip according to claim 1 provided on the card base.
Priority Applications (1)
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|---|---|---|---|
| JP2000301777A JP4620852B2 (en) | 2000-10-02 | 2000-10-02 | IC chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000301777A JP4620852B2 (en) | 2000-10-02 | 2000-10-02 | IC chip |
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| Publication Number | Publication Date |
|---|---|
| JP2002109493A true JP2002109493A (en) | 2002-04-12 |
| JP4620852B2 JP4620852B2 (en) | 2011-01-26 |
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ID=18783252
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|---|---|---|---|
| JP2000301777A Expired - Fee Related JP4620852B2 (en) | 2000-10-02 | 2000-10-02 | IC chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005062240A1 (en) * | 2003-12-22 | 2005-07-07 | Giesecke & Devrient Gmbh | Portable data carrier comprising means for adjusting the power acceptance |
| JPWO2005085882A1 (en) * | 2004-03-09 | 2007-08-09 | 松下電器産業株式会社 | Frequency sensor and semiconductor device |
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| JPH10209284A (en) * | 1997-01-20 | 1998-08-07 | Fujitsu Ltd | Semiconductor device and signal transmission system |
| WO1998048523A2 (en) * | 1997-04-24 | 1998-10-29 | Koninklijke Philips Electronics N.V. | Transponder constructed for contactless inductive communication |
| JPH11296627A (en) * | 1998-04-14 | 1999-10-29 | Mitsubishi Electric Corp | Non-contact card, its reader and writer and its control method |
| JP2000077999A (en) * | 1998-09-02 | 2000-03-14 | Oki Electric Ind Co Ltd | Semiconductor integrated circuit |
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2000
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|---|---|---|---|---|
| JPH09330387A (en) * | 1996-06-07 | 1997-12-22 | Toshiba Corp | Semiconductor integrated circuit, ic card, and ic card system |
| JPH10209284A (en) * | 1997-01-20 | 1998-08-07 | Fujitsu Ltd | Semiconductor device and signal transmission system |
| WO1998048523A2 (en) * | 1997-04-24 | 1998-10-29 | Koninklijke Philips Electronics N.V. | Transponder constructed for contactless inductive communication |
| JPH11296627A (en) * | 1998-04-14 | 1999-10-29 | Mitsubishi Electric Corp | Non-contact card, its reader and writer and its control method |
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| WO2005062240A1 (en) * | 2003-12-22 | 2005-07-07 | Giesecke & Devrient Gmbh | Portable data carrier comprising means for adjusting the power acceptance |
| JPWO2005085882A1 (en) * | 2004-03-09 | 2007-08-09 | 松下電器産業株式会社 | Frequency sensor and semiconductor device |
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| Publication number | Publication date |
|---|---|
| JP4620852B2 (en) | 2011-01-26 |
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