WO2014012440A1 - 可开关的非接触智能卡 - Google Patents

可开关的非接触智能卡 Download PDF

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Publication number
WO2014012440A1
WO2014012440A1 PCT/CN2013/078858 CN2013078858W WO2014012440A1 WO 2014012440 A1 WO2014012440 A1 WO 2014012440A1 CN 2013078858 W CN2013078858 W CN 2013078858W WO 2014012440 A1 WO2014012440 A1 WO 2014012440A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage capacitor
smart card
capacitor
contactless smart
switchable
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.)
Ceased
Application number
PCT/CN2013/078858
Other languages
English (en)
French (fr)
Inventor
严翔翔
周钰
郑建宾
彭敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Unionpay Co Ltd
Original Assignee
China Unionpay Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Unionpay Co Ltd filed Critical China Unionpay Co Ltd
Publication of WO2014012440A1 publication Critical patent/WO2014012440A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06K19/0713—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 including a power charge pump
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
    • G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers
    • G06K19/07318—Means for preventing undesired reading or writing from or onto record carriers by hindering electromagnetic reading or writing

Definitions

  • the utility model relates to a contactless smart card, and in particular to a switchable contactless smart card. Background technique
  • the utility model aims to provide a switchable contactless smart card, which comprises a coil, a storage capacitor, a power supply capacitor, a single-channel electronic pump and an integrated circuit chip, wherein the storage capacitor can be generated by a coil
  • the electromagnetic resonance is charged, and the storage capacitor charges the supply capacitor through a single-channel electronic pump connected between the storage capacitor and the supply capacitor, and the supply capacitor is used to supply the operating voltage to the integrated circuit chip, wherein the storage capacitor is also included
  • An additional resistor connected to prevent the storage capacitor from being charged under certain conditions.
  • the additional resistor is a thermistor in parallel with the storage capacitor.
  • the additional resistor is a photoresistor in series with the storage capacitor.
  • the utility model is non-contact by adding an electric resistance, such as a thermistor or a photoresistor.
  • the smart card's data access provides security and implements a switchable contactless energy card.
  • FIG. 1 is a schematic structural diagram of a contactless smart card according to an embodiment of the present invention.
  • 2 is a schematic diagram of a circuit arrangement of a contactless smart card in accordance with an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a circuit arrangement of a contactless smart card in accordance with another embodiment of the present invention. detailed description
  • a contactless smart card includes a coil, a storage capacitor, a power supply capacitor, a single-channel electronic pump, and an integrated circuit chip.
  • the storage capacitor is coupled to the coil, and the storage capacitor can be charged by electromagnetic resonance generated by the coil.
  • the electromagnetic resonance generated by the line ⁇ in the smart card is caused by a set of fixed-frequency electromagnetic waves transmitted by the card reader.
  • the storage capacitor is connected to the supply capacitor to charge the supply capacitor.
  • the supply capacitor is used to provide operating voltage to the integrated circuit chip. As shown in FIG.
  • the contactless smart card further includes an additional resistor connected to the storage capacitor, which is used to prevent the storage capacitor from being charged under certain conditions, thereby preventing the storage capacitor from charging the supply capacitor, thereby avoiding
  • the contactless smart card reads data from the card reader under the specific conditions described above.
  • the additional resistor is a thermistor in parallel with the storage capacitor.
  • the thermistor resistance is small, and the storage capacitor cannot be charged due to the thermistor path. Only Only when the card holder holds the smart card in his hand, the thermistor is heated by the heat resistor, and the storage capacitor can be charged, thereby allowing the data reading function to be completed.
  • the charge and discharge of the storage capacitor are controlled according to different resistance values of the thermistor at a low temperature and a high temperature, thereby realizing control of the non-storage smart card.
  • the additional resistor is a photoresistor in series with the storage capacitor.
  • the photoresistor has a large resistance value, thereby preventing the storage capacitor from being charged, and when the smart card is exposed to the light source, the resistance of the photoresistor becomes small, thereby allowing the storage capacitor to be charged.
  • the smart card according to this embodiment enables data to be read in the presence of illumination. When the card is placed in an unlit environment such as a backpack or pocket, the data in the card cannot be read.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Description

可开关的非接触智能卡
优先权要求
本申请要求了 2012年 7月 16日提交的、申请号为 201220342612.5、 实用新型名称为 "可开关的非接触智能卡" 的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本实用新型涉及非接触智能卡， 并且尤其涉及可开关的非接触智能卡。 背景技术
现有的非接触智能卡允许读卡器在通常为 2cm至 10cm进行读卡 操作， 而且某些特制的读卡器能够在更大的范围进行读卡操作。 存在 一些情况， 非接触智能卡非接触智能卡尚未被持卡人出示或者未经持 卡人允许而由读卡器进行读卡操作。 因此， 需要一种能够防止非接触 智能卡上的数据被意外读取或者被恶意窃取的非接触智能卡。 实用新型内容
本实用新型的目的在于提供一种可开关的非接触智能卡， 其特征 在于， 包括线圏、 储电电容、 供电电容、 单通路电子泵以及集成电路 芯片， 其中， 储电电容能够通过线圏产生的电磁共振被充电， 储电电 容通过连接在储电电容和供电电容之间的单通路电子泵对供电电容充 电， 供电电容用于为集成电路芯片提供工作电压， 其中， 还包括与储 电电容连接的附加电阻， 该附加电阻用于在特定的条件下阻止储电电 容被充电。
优选地， 该附加电阻是与储电电容并联的热敏电阻。
优选地， 该附加电阻是与储电电容串联的光敏电阻。
本实用新型通过附加电阻， 例如热敏电阻或光敏电阻， 对非接触 智能卡的数据访问提供了安全保护， 实现了一种可开关的非接触式 能卡。 附图说明
在参照附图阅读了本实用新型的具体实施方式以后，本领域技术人员将 会更清楚地了解本实用新型的各个方面。 本领域技术人员应当理解的是： 这 些附图仅仅用于配合具体实施方式说明本实用新型的技术方案， 而并非意在 对本实用新型的保护范围构成限制。
图 1是根据本实用新型实施例的非接触智能卡的结构组成示意图。 图 2 是根据本实用新型的一个实施例的非接触智能卡的电路布置示意 图。
图 3是根据本实用新型的另一个实施例的非接触智能卡的电路布置示意 图。 具体实施方式
以下结合附图阐述本实用新型的具体实施方式。
如图 1所示， 根据本实用新型实施例的非接触智能卡包括线圏、 储电电 容、 供电电容、 单通路电子泵以及集成电路芯片。 其中， 储电电容与线圏耦 合， 该储电电容能够通过线圏产生的电磁共振被充电。 这里， 智能卡内的线 圏产生的电磁共振由读卡器发送的一组固定频率的电磁波引起。储电电容通 到供电电容以对供电电容充电。 供电电容用于为集成电路芯片提供工作电 压。 如图 1所示， 非接触智能卡还包括与储电电容连接的附加电阻， 该附加 电阻用于在特定的条件下阻止储电电容被充电，从而防止储电电容对供电电 容充电， 由此避免非接触智能卡在上述特定条件下被读卡器从中读取数据。
图 2 是根据本实用新型的一个实施例的非接触智能卡的电路布置示意 图。 在该实施例中， 附加电阻是与储电电容并联的热敏电阻。 处于常温状态 下， 热敏电阻阻值较小， 储电电容会因为热敏电阻通路而无法完成充电。 仅 仅当持卡人将智能卡握在手里时， 热敏电阻受热电阻变大， 储电电容才能完 成充电， 从而允许完成数据读取功能。 该实施例根据热敏电阻在低温、 高温 的时的不同阻值来控制储电电容的充放电， 从而实现对非接储智能卡的控 制。
图 3是根据本实用新型的另一个实施例的非接触智能卡的电路布置示意 图。 在该实施例中， 该附加电阻是与储电电容串联的光敏电阻。 在智能卡不 见光的情况下， 光敏电阻阻值较大， 从而阻止储电电容被充电， 而在智能卡 被暴露在光源下时， 光敏电阻阻值变小， 从而允许储电电容被充电。 根据该 实施例的智能卡使得能够在有光照的情况下才能被读取数据。卡片被放在背 包或者口袋等无光照环境的时候， 卡片内的数据无法被读取。
上文中， 参照附图描述了本实用新型的具体实施方式。 但是， 本领域中 的普通技术人员能够理解， 在不偏离本实用新型的精神和范围的情况下， 还 可以对本实用新型的具体实施方式作各种变更和替换。这些变更和替换都落 在本实用新型权利要求书所限定的范围内。

Claims

权 利 要 求
1. 一种可开关的非接触智能卡， 其特征在于， 包括线圏、 储电电容、 供 电电容、 单通路电子泵以及集成电路芯片， 其中，
储电电容能够通过线圏产生的电磁共振被充电，
储电电容通过连接在储电电容和供电电容之间的单通路电子泵对供电 电容充电，
供电电容用于为集成电路芯片提供工作电压，
其中， 还包括与储电电容连接的附加电阻， 该附加电阻用于在特定的条 件下阻止储电电容被充电。
2. 如权利要求 1所述的可开关的非接触智能卡，其特征在于，该附加电 阻是与储电电容并联的热敏电阻。 3. 如权利要求 1所述的可开关的非接触智能卡，其特征在于，该附加电 阻是与储电电容串联的光敏电阻。
PCT/CN2013/078858 2012-07-16 2013-07-05 可开关的非接触智能卡 Ceased WO2014012440A1 (zh)

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Application Number Priority Date Filing Date Title
CN 201220342612 CN202758377U (zh) 2012-07-16 2012-07-16 可开关的非接触智能卡
CN201220342612.5 2012-07-16

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202758377U (zh) * 2012-07-16 2013-02-27 中国银联股份有限公司 可开关的非接触智能卡
CN104077620A (zh) * 2013-12-03 2014-10-01 北京中电华大电子设计有限责任公司 一种具有安全功能的非接触智能卡电磁场耦合的实现电路

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1231751A (zh) * 1996-08-06 1999-10-13 内部技术公司 包括一个电荷泵的无触点集成电路
CN1414516A (zh) * 2002-09-20 2003-04-30 商庆海 非接触式安全卡
US20110079646A1 (en) * 2009-10-07 2011-04-07 Castles Technology Co., Ltd. Composite chip card with a security protection interface and a method for controlling the same
CN202758377U (zh) * 2012-07-16 2013-02-27 中国银联股份有限公司 可开关的非接触智能卡

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1231751A (zh) * 1996-08-06 1999-10-13 内部技术公司 包括一个电荷泵的无触点集成电路
CN1414516A (zh) * 2002-09-20 2003-04-30 商庆海 非接触式安全卡
US20110079646A1 (en) * 2009-10-07 2011-04-07 Castles Technology Co., Ltd. Composite chip card with a security protection interface and a method for controlling the same
CN202758377U (zh) * 2012-07-16 2013-02-27 中国银联股份有限公司 可开关的非接触智能卡

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