WO2010074443A2 - 접촉식 아이씨카드 판독기의 전원 인터페이스회로 - Google Patents
접촉식 아이씨카드 판독기의 전원 인터페이스회로 Download PDFInfo
- Publication number
- WO2010074443A2 WO2010074443A2 PCT/KR2009/007451 KR2009007451W WO2010074443A2 WO 2010074443 A2 WO2010074443 A2 WO 2010074443A2 KR 2009007451 W KR2009007451 W KR 2009007451W WO 2010074443 A2 WO2010074443 A2 WO 2010074443A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power
- unit
- card
- terminal
- transistor
- Prior art date
Links
- 230000000295 complement effect Effects 0.000 claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
- G06K7/0086—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers the connector comprising a circuit for steering the operations of the card connector
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
Definitions
- the present invention relates to a design technology of a power supply interface circuit applied to various card readers, and in particular, to implement a power supply interface circuit for supplying power to a contact IC card. It relates to a power interface circuit of a contact IC card reader.
- IC cards are classified into contact IC cards and contactless IC cards.
- a contact IC card is physically connected and communicated with a card reader through an 8-pin terminal of the card, while a contactless IC card transmits radio frequency signals within a predetermined range. To communicate with the card reader.
- the contact IC card is applied to an IC card terminal or various mobile device game machines having a subscriber authentication module (USIM or SIM) or a security authentication module (SIM).
- the contact IC card does not have a battery and is activated by power supplied from a power interface circuit only when the battery is connected to a card reader. When the connection state is released, the power is interrupted and maintained in an inactive state.
- the reader of the contact IC card is provided with a card power interface circuit for supplying a predetermined level of voltage when connected to the contact IC card, and for interrupting the power supply when the connection is interrupted.
- the power interface circuit of the conventional contact IC card reader is implemented with a one chip interface element. Even when the contact IC card is separated from the contact IC card, the voltage at the power output terminal does not maintain a zero level and is often at a predetermined level. There was a problem that it is maintained above about 1V) and adversely affects the contact IC card.
- the power interface circuit of the conventional contact type IC card reader occupies a lot of space due to the characteristics of the circuit configuration, which causes difficulty in miniaturization and cost reduction.
- an object of the present invention is to implement a power interface circuit for supplying power to a contact IC card applied to the IC card reader, the circuit is simple and inexpensive, and the power output stage in a state separated from the contact IC card The purpose is to be able to keep the voltage at zero level stable.
- the power input unit for transmitting the power supply terminal voltage supplied from the outside to the switching diode unit and the complementary transistor unit;
- a power control unit for inverting and amplifying and outputting a power control signal supplied from the outside;
- a switching diode unit for controlling the on / off operation of the ground terminal side transistor of the complementary transistor unit according to the output signal of the power supply control unit;
- Complementary transistors operate opposite to each other by a control signal input directly from the power control unit and a control signal input through the switching diode unit, and transfer the power terminal voltage to the power output unit, or the card power terminal of the power output unit.
- a complementary transistor unit for muting to a level of ground voltage In accordance with the operation of the complementary transistor unit, characterized in that it comprises a power output unit for outputting the voltage input through the complementary transistor unit to the card power supply terminal of the IC card, or to maintain the card power supply terminal at the level of the ground voltage. do.
- the present invention implements a power interface circuit applicable to an IC reader, a subscriber authentication module (USIM or SIM), a security authentication module (SIM), and the like, and the effect of contributing to the miniaturization and cost reduction of a product by simply implementing the circuit. have.
- the voltage at the power output terminal can be reliably and stably maintained at the zero level in a state where it is separated from the contact IC card, the reliability of the product can be improved.
- FIG. 1 is a block diagram of a power interface circuit of a contact IC card reader according to the present invention
- FIG. 2 is a power interface circuit diagram of a contact IC card reader according to the present invention.
- power control unit 2 power input unit
- switching diode portion 4 complementary transistor portion
- FIG. 1 is a block diagram of a power interface circuit of a contact IC card reader according to the present invention, as shown therein, a power supply control section 1, a power supply input section 2, a switching diode section 3, and a complementary transistor section ( 4) and a power output unit 5.
- the power input unit 2 receives a power terminal voltage of a predetermined level from the outside and transfers it to the switching diode unit 3 and the complementary transistor unit 4.
- the power control unit 1 inverts the power control signal EN_CARD_VCC supplied from the outside, buffers and amplifies the signal to a predetermined level, and outputs the amplified signal to the switching diode unit 3 and the complementary transistor unit 4.
- the switching diode section 3 controls the on / off operation of the transistor on the ground terminal side of the complementary transistor section 4 in accordance with the output signal of the power supply control section 1.
- the complementary transistor unit 4 operates the complementary transistors in opposition to each other by a control signal directly input from the power supply control unit 1 and a control signal input through the switching diode unit 3.
- the power terminal voltage input through the power transmission unit 5 is transferred to the power output unit 5, or the card power terminal CARD_VCC of the power output unit 5 is muted to the level of the ground voltage.
- the power output unit 5 transmits the voltage inputted through the complementary transistor unit 4 to the card power supply terminal CARD_VCC of the IC card.
- the card power supply terminal CARD_VCC is maintained at the ground voltage level.
- the power input unit 2A receives the power terminal voltage 5V of a predetermined level from the outside and supplies it to the anode common connection point of the switching diode unit 3, and the power input unit 2B also receives the power terminal voltage 5V from the outside. Is supplied to the emitter of the PNP transistor Q1 on the complementary transistor section 4.
- the power control unit 1 converts the power control signal EN_CARD_VCC of the 'high' to 'low' by using the inverter I1.
- the 'low' signal output from the inverter I1 of the power supply control unit 1 is transmitted to the base side of the transistor Q1 of the complementary transistor unit 4, and the transistor Q1 is turned on.
- the power terminal voltage 5V supplied through the power input unit 2A is the diode D1 of the switching diode unit 3. Is supplied to the output terminal side of the inverter I1 so that the base of the NPN transistor Q2 of the complementary transistor section 4 is in a low state. Thus, the transistor Q2 is turned off.
- the power supply terminal voltage 5V input through the power supply input unit 2B is charged through the transistor Q1 and then charged to the capacitor C2 of the power supply output unit 5, and the charging voltage is supplied to the card power supply terminal.
- Output to (CARD_VCC) Accordingly, the power supply terminal voltage 5V is transmitted to the contact IC card through the card power supply terminal CARD_VCC and the power supply terminal of the contact IC card.
- the control device of the IC card reader can read or write data from the IC card.
- the control device of the IC card reader When communication between the control device of the IC card reader and the IC card is completed, the control device of the IC card reader outputs the power control signal EN_CARD_VCC as 'low'.
- the low power control signal EN_CARD_VCC is converted to high by the inverter I1 of the power control unit 1.
- the 'high' signal output from the inverter I1 of the power supply control unit 1 is transmitted to the base side of the transistor Q1 of the complementary transistor unit 4 so that the transistor Q1 is turned off.
- the power terminal voltage 5V input through the power input unit 2B is cut off by the transistor Q1.
- the power terminal voltage 5V input through the power input unit 2A is the diode D2 of the switching diode unit 3. Is supplied to the base of the transistor Q2 of the complementary transistor section 4, whereby the transistor Q2 is turned on.
- the residual voltage of the capacitor C2 and the card power terminal CARD_VCC side of the power output unit 5 is rapidly muted to the ground terminal through the transistor Q2. Accordingly, the voltage level of the card power supply terminal CARD_VCC is stably maintained at zero level.
- the power inputs 2A and 2B have been represented by different symbols for convenience of description, but are substantially implemented as one power input unit 2 as shown in FIG. 1.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Power Sources (AREA)
- Electronic Switches (AREA)
- Logic Circuits (AREA)
Abstract
Description
Claims (5)
- 외부로부터 공급되는 전원제어신호를 반전 및 증폭하여 출력하는 전원제어부와;상기 전원제어부의 출력신호에 따라 상보형 트랜지스터부의 접지단자측 트랜지스터의 온오프 동작을 제어하는 스위칭 다이오드부와;상기 전원제어부로부터 직접 입력되는 제어신호와 상기 스위칭 다이오드부를 통해 입력되는 제어신호에 의해 상보형 트랜지스터가 서로 상반되게 동작하면서 전원단자전압을 전원출력부 측으로 전달하거나, 그 전원출력부의 카드전원단자를 접지전압의 레벨로 뮤팅시키는 상보형 트랜지스터부와;상기 상보형 트랜지스터부의 동작에 따라, 그 상보형 트랜지스터부를 통해 입력되는 전압을 IC카드의 카드전원단자에 출력하거나, 카드전원단자를 접지전압의 레벨로 유지하는 전원출력부로 구성한 것을 특징으로 하는 접촉식 아이씨카드 판독기의 전원 인터페이스회로.
- 제1항에 있어서, 전원제어부는 전원제어신호를 반전 및 증폭하는 인버터를 포함하여 구성된 것을 특징으로 하는 접촉식 아이씨카드 판독기의 전원 인터페이스회로.
- 제1항에 있어서, 스위칭 다이오드부는애노드가 전원입력단자 측에 접속되고 캐소우드는 상기 전원제어부의 출력단측에 접속된 제1다이오드와;애노드가 전원입력단자 측에 접속되고 캐소우드는 상보형 트랜지스터부의 접지단자측 트랜지스터의 베이스에 접속된 제2다이오드를 포함하여 구성된 것을 특징으로 하는 접촉식 아이씨카드 판독기의 전원 인터페이스회로.
- 제1항에 있어서, 상보형 트랜지스터부는에미터가 전원입력부의 전원단자에 접속되고, 베이스는 상기 전원제어부의 출력단에 접속되며, 콜렉터는 전원출력부의 전원입력단에 접속된 PNP형 트랜지스터와;콜렉터가 상기 PNP형 트랜지스터의 콜렉터에 접속되고, 베이스는 상기 스위칭 다이오드부의 타측 출력단에 접속되며, 에미터가 접지단자에 접속된 NPN형 트랜지스터로 구성된 것을 특징으로 하는 접촉식 아이씨카드 판독기의 전원 인터페이스회로.
- 제1항에 있어서, 전원출력부는 입력단자가 접축식 IC카드의 카드전원단자에 접속되고, 그 접속점이 콘덴서를 통해 접지단자에 접속된 것을 특징으로 하는 접촉식 아이씨카드 판독기의 전원 인터페이스회로.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09835209.9A EP2372888B1 (en) | 2008-12-24 | 2009-12-11 | Power interface circuit of contact ic card reader |
CN200980151917.9A CN102257713B (zh) | 2008-12-24 | 2009-12-11 | 用于接触式ic读卡器的电力接口电路 |
US13/142,079 US8610468B2 (en) | 2008-12-24 | 2009-12-11 | Power interface circuit of contact IC card reader |
JP2011543418A JP5257720B2 (ja) | 2008-12-24 | 2009-12-11 | 接触式集積回路カード読み取り機の電源インターフェース回路 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2008-0133449 | 2008-12-24 | ||
KR1020080133449A KR100995752B1 (ko) | 2008-12-24 | 2008-12-24 | 접촉식 아이씨카드 판독기의 전원 인터페이스회로 |
Publications (2)
Publication Number | Publication Date |
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WO2010074443A2 true WO2010074443A2 (ko) | 2010-07-01 |
WO2010074443A3 WO2010074443A3 (ko) | 2010-09-23 |
Family
ID=42288248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2009/007451 WO2010074443A2 (ko) | 2008-12-24 | 2009-12-11 | 접촉식 아이씨카드 판독기의 전원 인터페이스회로 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8610468B2 (ko) |
EP (1) | EP2372888B1 (ko) |
JP (1) | JP5257720B2 (ko) |
KR (1) | KR100995752B1 (ko) |
CN (1) | CN102257713B (ko) |
MY (1) | MY161259A (ko) |
WO (1) | WO2010074443A2 (ko) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8677034B2 (en) | 2006-04-28 | 2014-03-18 | Hewlett-Packard Development Company, L.P. | System for controlling I/O devices in a multi-partition computer system |
CN103605947A (zh) * | 2013-12-04 | 2014-02-26 | 东信和平科技股份有限公司 | 一种接触式断电读卡器 |
CN105893894B (zh) * | 2015-02-11 | 2018-09-28 | 天地融科技股份有限公司 | 一种电子设备 |
CN106210198B (zh) * | 2016-07-29 | 2019-03-05 | 维沃移动通信有限公司 | 一种智能卡保护电路、移动终端及智能卡保护方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05250532A (ja) * | 1992-03-09 | 1993-09-28 | Nec Corp | Icカード |
JP2002269519A (ja) | 2001-03-09 | 2002-09-20 | Sharp Corp | 半導体装置およびそれを用いるicカード |
JP2003244966A (ja) * | 2002-02-18 | 2003-08-29 | Mitsubishi Electric Corp | 駆動回路 |
JP4077337B2 (ja) | 2003-02-27 | 2008-04-16 | 株式会社東芝 | パルス発生回路及びそれを用いたハイサイドドライバ回路 |
EP1661055A1 (en) * | 2003-08-27 | 2006-05-31 | Koninklijke Philips Electronics N.V. | Card reader having contact and non-contact interface |
JP2006011917A (ja) | 2004-06-28 | 2006-01-12 | Matsushita Electric Ind Co Ltd | 非接触icカード |
JP4750530B2 (ja) | 2005-10-27 | 2011-08-17 | ルネサスエレクトロニクス株式会社 | 半導体集積回路装置及びそれを用いた非接触電子装置 |
KR100691634B1 (ko) | 2006-06-08 | 2007-03-12 | 삼성전기주식회사 | Lcd 백라이트 인버터 구동회로 |
-
2008
- 2008-12-24 KR KR1020080133449A patent/KR100995752B1/ko not_active IP Right Cessation
-
2009
- 2009-12-11 WO PCT/KR2009/007451 patent/WO2010074443A2/ko active Application Filing
- 2009-12-11 EP EP09835209.9A patent/EP2372888B1/en not_active Not-in-force
- 2009-12-11 JP JP2011543418A patent/JP5257720B2/ja not_active Expired - Fee Related
- 2009-12-11 US US13/142,079 patent/US8610468B2/en not_active Expired - Fee Related
- 2009-12-11 CN CN200980151917.9A patent/CN102257713B/zh not_active Expired - Fee Related
- 2009-12-11 MY MYPI2011002680A patent/MY161259A/en unknown
Non-Patent Citations (2)
Title |
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None |
See also references of EP2372888A4 |
Also Published As
Publication number | Publication date |
---|---|
EP2372888B1 (en) | 2015-04-15 |
JP5257720B2 (ja) | 2013-08-07 |
KR100995752B1 (ko) | 2010-11-19 |
JP2012513720A (ja) | 2012-06-14 |
EP2372888A4 (en) | 2013-04-24 |
US8610468B2 (en) | 2013-12-17 |
KR20100074898A (ko) | 2010-07-02 |
CN102257713B (zh) | 2014-05-28 |
US20110254620A1 (en) | 2011-10-20 |
CN102257713A (zh) | 2011-11-23 |
MY161259A (en) | 2017-04-14 |
EP2372888A2 (en) | 2011-10-05 |
WO2010074443A3 (ko) | 2010-09-23 |
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