CN2672739Y - Double interface intelligent card chip - Google Patents
Double interface intelligent card chip Download PDFInfo
- Publication number
- CN2672739Y CN2672739Y CN 200420024038 CN200420024038U CN2672739Y CN 2672739 Y CN2672739 Y CN 2672739Y CN 200420024038 CN200420024038 CN 200420024038 CN 200420024038 U CN200420024038 U CN 200420024038U CN 2672739 Y CN2672739 Y CN 2672739Y
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- China
- Prior art keywords
- interface
- interface system
- cpu
- card chip
- intelligent card
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a double interface intelligent card chip. A USB interface system and an ISO7861 interface system which are respectively connected with a CPU and an interface checking module are arranged on the chip simultaneously. The CPU is connected with the interface checking module. When the USB interface system is in operation, the ISO7816 interface system is inoperative, and vice versa. The double interface intelligent card chip solves the inconvenience caused by many cards at hands, because people use smart cards of different interface techniques in different fields. The utility model has the advantages of simple structure and small volume. If one cart at hand, many cards are universal.
Description
Technical field
The utility model relates to a kind of chip, particularly a kind of interface chip.
Background technology
Before the present utility model, along with the development of large scale integrated circuit technology, computer technology and information security technology, smart card has obtained using widely.Smart card is by interfacing, carries out exchanges data through read-write (card) device read-write and the external world.Because different interfacings has technical characteristic separately, can in different fields, use the smart card of distinct interface technology, corresponding is that different read write lines is just arranged therewith, thereby realizes exchanges data.
But, only because the difference of interfacing, and cause the various smart card information can not intercommunication, people need carry multiple different smart card, and usefulness has also been brought inconvenience really in order to various information datas exchanges.
Summary of the invention
The purpose of this utility model just is to overcome above-mentioned defective, designs a kind of intelligent card chip that can carry out exchanges data with the read-write equipment with USB interface and ISO7816 interface.
The technical solution of the utility model is: double-interface smart card chip, its major technique are characterised in that usb interface system, ISO7816 interface system are set on this chip, connect CPU, interface detection module respectively, CPU connection interface detection module.
Advantage of the present utility model and effect are that smart card both can carry out exchanges data with the read-write equipment of USB interface, can carry out exchanges data with the read-write equipment of ISO7816 standard interface again, make the scope of application of chip enlarge, making it to carry out intercommunication between different read-write equipments in the information of different field uses, make things convenient for the user, really accomplish one card for multiple uses.
Description of drawings
Fig. 1-the utility model application principle synoptic diagram.
Embodiment
As shown in Figure 1, usb interface system 1, ISO7816 interface system 3 are connected with CPU 2 respectively, also be connected with interface detection module 4 respectively, interface detection module 4 is connected with CPU 2, usb interface system 1 respectively, above-mentioned connection is transmitted in both directions, whole formation double-interface smart card chip 5 promptly is provided with usb interface system 1, ISO7816 interface system 3 on this chip 5 simultaneously.
When using usb interface system 1, usb interface system 1 is connected with the main frame USB interface, and signal is by entering main frame, and main frame and CPU 2 carry out message exchange, usb interface system 1 work this moment; Because interface detection module 4 detects usb interface system 1 and connects with the USB interface of main frame, thereby this information passed to CPU 2, then CPU 2 instruction that will cut off ISO7816 interface system 3 feeds back to interface detection module 4, then interface detection module 4 disconnects the circuit of ISO7816 interface system 3 again, make it not work, be usb interface system 1 work, then ISO7816 interface system 3 is not worked.If interface detection module 4 detects usb interface system 1 and do not use connection, then CPU 2 will give tacit consent to ISO7816 interface system 3 and be in connection status.The two can not be worked simultaneously.
Claims (1)
1. the double-interface smart card chip is characterized in that usb interface system, ISO7816 interface system are set on this chip, connects CPU, interface detection module respectively, CPU connection interface detection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024038 CN2672739Y (en) | 2004-01-06 | 2004-01-06 | Double interface intelligent card chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024038 CN2672739Y (en) | 2004-01-06 | 2004-01-06 | Double interface intelligent card chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672739Y true CN2672739Y (en) | 2005-01-19 |
Family
ID=34483328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420024038 Expired - Fee Related CN2672739Y (en) | 2004-01-06 | 2004-01-06 | Double interface intelligent card chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2672739Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840387A (en) * | 2010-04-07 | 2010-09-22 | 北京天地融科技有限公司 | USB (Universal Serial Bus) Key device and method for realizing smart card communications using USB interface |
| CN107316074A (en) * | 2017-07-04 | 2017-11-03 | 冯贵良 | A kind of multi-protocols smart card and implementation method |
-
2004
- 2004-01-06 CN CN 200420024038 patent/CN2672739Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840387A (en) * | 2010-04-07 | 2010-09-22 | 北京天地融科技有限公司 | USB (Universal Serial Bus) Key device and method for realizing smart card communications using USB interface |
| CN101840387B (en) * | 2010-04-07 | 2012-05-23 | 北京天地融科技有限公司 | USB (Universal Serial Bus) Key device and method for realizing smart card communications using USB interface |
| CN107316074A (en) * | 2017-07-04 | 2017-11-03 | 冯贵良 | A kind of multi-protocols smart card and implementation method |
| CN107316074B (en) * | 2017-07-04 | 2018-08-21 | 冯贵良 | A kind of multi-protocols smart card and implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050119 Termination date: 20120106 |