CN102467647B - Judging method and circuit for work mode of dual-interface smart card - Google Patents
Judging method and circuit for work mode of dual-interface smart card Download PDFInfo
- Publication number
- CN102467647B CN102467647B CN201010546866.4A CN201010546866A CN102467647B CN 102467647 B CN102467647 B CN 102467647B CN 201010546866 A CN201010546866 A CN 201010546866A CN 102467647 B CN102467647 B CN 102467647B
- Authority
- CN
- China
- Prior art keywords
- contact
- contactless
- condition
- mode
- smart card
- 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.)
- Active
Links
Landscapes
- Credit Cards Or The Like (AREA)
Abstract
The invention discloses a judging method for contact and non-contact work modes of a dual-interface smart card, aiming at providing a work mode judging method capable of achieving normal work of the dual-interface card under the contact and/or non-contact work modes. In the invention, the work mode is judged to be the contact work mode under the contact condition, and is judged to be the non-contact work mode under the non-contact condition, wherein when the contact condition and the non-contact condition exist at the same time, the work mode is the one which appears earlier. The judging method and the circuit for the work mode of dual-interface smart card are suitable for the field of the smart card.
Description
Technical field
The present invention relates to the mode of operation decision method in a kind of field of intelligent cards and circuit, in particular, relate to a kind of contact of double-interface smart card and the decision method of contactless pattern and circuit.
Background technology
At present, in application of IC cards, there is the double-interface smart card that contact card and non-contact card combine.This double-interface card supports ISO/IEC 7816 contact interface and ISO/IEC 14443 non-contact interface simultaneously, and can use in different applied environments, have the advantage of contact card and non-contact card concurrently, function is more perfect, is a kind of multifunction card.
Still there is many technical matterss in double-interface card design, one of them is exactly under different condition of work (contact, contactless, contact exist with contactless simultaneously), the mode of operation of judgement card.
Summary of the invention
The object of this invention is to provide a kind of contact of double-interface smart card and the decision method of contactless pattern, double-interface card can normally be worked under contact and/or contactless condition.
Above-mentioned purpose of the present invention is achieved through the following technical solutions: under contact condition, is judged to contact mode of operation, when contact condition keeps, even if reactivation noncontact condition, still keeps in touch mode of operation, contactless condition conductively-closed; Under contactless condition, be judged to be contactless pattern, when contactless condition keeps, even if reactivation contact conditions, still keep contactless pattern, the conductively-closed of contact condition; When contact and contactless condition exist simultaneously, which condition first occurs just being judged to be this mode of operation.
For realizing the decision method of above-mentioned contact and contactless pattern, circuit structure of the present invention is made up of two upper photodetectors and a rest-set flip-flop, on one of them, photodetector detects the voltage of contact VCC contact, on another, photodetector detects contactless commutating voltage VRF, the output signal of two detecting devices is connected respectively to the input end of rest-set flip-flop, and the output signal of rest-set flip-flop is mode of operation marking signal.If the output signal of rest-set flip-flop is ' 0 ', then judge that mode of operation is as contact, if the output signal of rest-set flip-flop is ' 1 ', then judge that mode of operation is as contactless
Owing to adopting above-mentioned technical scheme and circuit structure, card, according to the condition of work in the external world, determined mode of operation automatically.Present invention successfully solves the contact of double-interface smart card and the decision problem of contactless pattern, no matter be used alone contact or Non-contact Media Reader, or under contact and the simultaneous condition of Non-contact Media Reader, can operate double-interface card easily.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of work mode of dual-interface smart card decision method of the present invention.
embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
In FIG, the meaning of input/output signal is as shown in table 1.
The significance signal that table 1 work mode of dual-interface smart card judges
Double-interface smart card contact provided by the present invention is realized by mode detection and decision circuit with the decision method of contactless pattern.As shown in Figure 1, circuit structure is made up of two upper photodetectors and a rest-set flip-flop, on one of them, photodetector detects the voltage of contact VCC contact, on another, photodetector detects contactless commutating voltage VRF, the output signal of two detecting devices is connected respectively to set end SB and the reset terminal RB of rest-set flip-flop, and the output Q end signal of rest-set flip-flop is mode of operation marking signal MODE.
After double-interface card inserts contact card reader, VCC powers on, and VCC >=1.5V detected, and upper photodetector 1 exports high level signal; After double-interface card is extracted from contact card reader, VCC disappears, and VCC < 1.5V detected, then goes up photodetector 1 output low level signal.When double-interface card is exposed among the effective field intensity of Non-contact Media Reader, VRF powers on, and VRF >=1.5V detected, and upper photodetector 2 exports high level signal; After double-interface card leaves the effective field intensity of Non-contact Media Reader, VRF disappears, and VRF < 1.5V detected, then goes up photodetector 2 output low level signal.
The output signal of rest-set flip-flop is mode of operation marking signal MODE, and low level represents contact mode of operation, and high level represents contactless pattern.When upper photodetector 1 exports high level signal, during upper photodetector 2 output low level signal, MODE output low level signal, puts double-interface card in contact mode of operation; When upper photodetector 1 output low level signal, when upper photodetector 2 exports high level signal, MODE exports high level signal, puts double-interface card in contactless pattern.If after upper photodetector 1 exports high level signal, the output of upper photodetector 2 is changed to high level signal by low level, and the output signal of rest-set flip-flop remains unchanged, and MODE is output low level signal still, keeps in touch mode of operation; If after upper photodetector 2 exports high level signal, the output of upper photodetector 1 is changed to high level signal by low level, and the output signal of rest-set flip-flop remains unchanged, and MODE still exports high level signal, keeps contactless pattern.
By adopting above-mentioned circuit structure, card according to the condition of work in the external world, can judge mode of operation automatically.Present invention successfully solves the contact of double-interface smart card and the decision problem of contactless pattern, no matter be used alone contact or Non-contact Media Reader, or under contact and the simultaneous condition of Non-contact Media Reader, can operate double-interface card easily.
Claims (2)
1. the decision circuit of a work mode of dual-interface smart card, it is characterized in that decision circuit is made up of two upper photodetectors and a rest-set flip-flop, on one of them, photodetector detects the voltage of contact VCC contact, on another, photodetector detects contactless commutating voltage VRF, the upper photodetector detecting contact VCC contact voltage is connected to the set end SB of rest-set flip-flop, the upper photodetector detecting contactless commutating voltage VRF is connected to rest-set flip-flop reset terminal RB, the output signal of rest-set flip-flop is mode of operation marking signal, if the output signal of rest-set flip-flop is low level, then judge that work mode of dual-interface smart card is as contact, if the output signal of rest-set flip-flop is high level, then judge that work mode of dual-interface smart card is as contactless.
2. a decision method for work mode of dual-interface smart card, is applied in decision circuit according to claim 1, it is characterized in that: under contact condition, be judged to contact mode of operation, even if reactivation noncontact condition, still keeps in touch mode of operation, contactless condition conductively-closed; Under contactless condition, be judged to be contactless pattern, even if reactivation contact conditions, still keep contactless pattern, the conductively-closed of contact condition, when contact and contactless condition exist simultaneously, which condition first occurs just being judged to be this mode of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010546866.4A CN102467647B (en) | 2010-11-16 | 2010-11-16 | Judging method and circuit for work mode of dual-interface smart card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010546866.4A CN102467647B (en) | 2010-11-16 | 2010-11-16 | Judging method and circuit for work mode of dual-interface smart card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102467647A CN102467647A (en) | 2012-05-23 |
| CN102467647B true CN102467647B (en) | 2015-02-18 |
Family
ID=46071273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010546866.4A Active CN102467647B (en) | 2010-11-16 | 2010-11-16 | Judging method and circuit for work mode of dual-interface smart card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102467647B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950240A (en) * | 2014-03-26 | 2015-09-30 | 北京同方微电子有限公司 | Working voltage segment testing system and testing method for smart card |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1460965A (en) * | 2002-05-23 | 2003-12-10 | 夏普株式会社 | Combined IC card |
| CN1581220A (en) * | 2003-08-12 | 2005-02-16 | 上海华虹集成电路有限责任公司 | Toutch and nou-toutch type working-mode changing-over method in double interface card |
| CN1637780A (en) * | 2003-09-05 | 2005-07-13 | 三星电子株式会社 | Chip card with simultaneous contact and contact-less operations |
| CN2842882Y (en) * | 2004-06-09 | 2006-11-29 | 龙杰智能卡有限公司 | Portable dual-mode contact and contactless communication device |
| CN101533479A (en) * | 2008-03-11 | 2009-09-16 | 北京同方微电子有限公司 | Dual-interface smart card power source management circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5300428B2 (en) * | 2008-11-13 | 2013-09-25 | ルネサスエレクトロニクス株式会社 | Arithmetic apparatus and arithmetic processing method |
-
2010
- 2010-11-16 CN CN201010546866.4A patent/CN102467647B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1460965A (en) * | 2002-05-23 | 2003-12-10 | 夏普株式会社 | Combined IC card |
| CN1581220A (en) * | 2003-08-12 | 2005-02-16 | 上海华虹集成电路有限责任公司 | Toutch and nou-toutch type working-mode changing-over method in double interface card |
| CN1637780A (en) * | 2003-09-05 | 2005-07-13 | 三星电子株式会社 | Chip card with simultaneous contact and contact-less operations |
| CN2842882Y (en) * | 2004-06-09 | 2006-11-29 | 龙杰智能卡有限公司 | Portable dual-mode contact and contactless communication device |
| CN101533479A (en) * | 2008-03-11 | 2009-09-16 | 北京同方微电子有限公司 | Dual-interface smart card power source management circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102467647A (en) | 2012-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102043933B (en) | SD (Secure Digital) card reader module with controllable operating state | |
| CN106161706B (en) | SIM card and SD card are total to detection method, device and the mobile terminal of Kato | |
| CN101281610B (en) | Double-interface smart card and method for starting non-contact application | |
| EP1650696A1 (en) | Integrated circuit card selective power control | |
| CN102142100A (en) | High-frequency passive RFID (Radio Frequency Identification) analog front end circuit | |
| CN102467647B (en) | Judging method and circuit for work mode of dual-interface smart card | |
| CN103546638B (en) | A kind of flash memory cards fall card restoration methods and mobile terminal thereof | |
| TW200933353A (en) | Power-on reset circuit, and combination type ic card | |
| CN209168175U (en) | A kind of polydisc safe storage system for realizing identification by RF Technology of Radio Frequency Card | |
| CN1581220A (en) | Toutch and nou-toutch type working-mode changing-over method in double interface card | |
| CN102096835A (en) | Method for switching working modes of dual interface smart card | |
| CN101840386A (en) | Universal serial bus system | |
| CN201576298U (en) | Automatic detecting and switching device for dual interface smartcard clock sources | |
| CN102436571A (en) | Wireless storage card reader | |
| CN204706047U (en) | A kind of RFID card reader for high fail-safe computer | |
| CN204087219U (en) | A kind of ultrahigh frequency readers | |
| CN103150532A (en) | Capacitive sensing method and device for double-interface card reader | |
| CN102110237A (en) | Processing method for lowering power consumption of multi-interface IC (Integrated Circuit) card pin | |
| CN102103679B (en) | A/B mode detection circuit adaptive to variation of field intensity | |
| CN201340604Y (en) | Composite contact card reader | |
| CN205281532U (en) | Multi -functional sale of electricity card reader | |
| CN201477607U (en) | Handheld smart card reader | |
| CN103605947A (en) | Contact type power-off card reader | |
| CN102054151B (en) | Method for quickly judging operating mode of dual interface smartcard | |
| CN102799393A (en) | Method and device for working condition management on dual-interface smart card chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 102209 Beijing, Beiqijia, the future of science and technology in the south area of China electronic network security and information technology industry base C building, Patentee after: Beijing CEC Huada Electronic Design Co., Ltd. Address before: 100102 Beijing City, Chaoyang District Lize two Road No. 2, Wangjing science and Technology Park A block five layer Patentee before: Beijing CEC Huada Electronic Design Co., Ltd. |