CN202495078U - Smart card and terminal system - Google Patents
Smart card and terminal system Download PDFInfo
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- CN202495078U CN202495078U CN 201120537713 CN201120537713U CN202495078U CN 202495078 U CN202495078 U CN 202495078U CN 201120537713 CN201120537713 CN 201120537713 CN 201120537713 U CN201120537713 U CN 201120537713U CN 202495078 U CN202495078 U CN 202495078U
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- interface controller
- card
- smart card
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Abstract
The utility model discloses a smart card and a terminal system. The smart card comprises: a first interface controller, a second interface controller, and a central processor, wherein, the first interface controller is connected with a terminal device by a contact of the smart card; the second interface controller is connected with a user card by the contact of the smart card; the central processor is respectively connected with the first interface controller and the second interface controller and used for negotiating with the terminal device to determine the first speed used for data transmission between the first interface controller and the terminal device, and negotiating with the user card to determine the second speed used for data transmission between the second interface controller and the user card. The smart card respectively determines the data transmission speed for the connected terminal device and the user card, the work efficiency of the smart card is increased, the terminal system formed by the smart card, the terminal device and the user card is used to transmit the data therein, so as to get rid of the relative low speed limit of the user card.
Description
Technical Field
The utility model relates to a smart card technical field especially relates to a smart card and terminal system.
Background
In recent years, with the competition of the mobile communication market becoming more intense, operators are required to rapidly launch various services at low cost, but users are often unable to use the services due to the limitation of their terminal device functions. The problem is solved by the application of the mobile communication smart card, the smart card is applied to terminal equipment and can provide various value-added service functions, and compared with the replacement of the terminal equipment, the mobile communication smart card used in the existing terminal equipment has the characteristics of convenience, flexibility and low cost.
The existing mobile communication smart card generally comprises a central processing Module and two interface modules, wherein the two interface modules are respectively used for receiving data sent by a Subscriber Identity Module (SIM) card and a terminal device, and the central processing Module is responsible for correspondingly processing data from one of the terminal device and the SIM card and then sending the data to the other.
At present, the mobile communication smart card generally adopts symmetrical speed to transmit data, that is, the smart card and the terminal device and the SIM card connected with the smart card all adopt the same speed when transmitting data, however, because the terminal device and the SIM card in the current market have various types, different functions and different performance, and the data transmission speed supported by the SIM card is generally lower than the data transmission speed supported by the terminal device, in this case, it is not easy to want the smart card to use the default speed of the SIM card to transmit data with the terminal device without causing the compatibility problem of the device. In view of this, in order To ensure that the terminal device can normally use the smart card, a forced conversion mode is currently adopted To determine the rate, that is, after the central processing module of the smart card receives an ATR (Answer To Reset) byte sent by the SIM card, the TA1 byte reflecting the SIM card rate is forced To be 0x11 (i.e. 9600bps), and the ATR byte is sent To the terminal device. This will prolong the data transmission time, resulting in compatibility problems of some terminal devices, such as incapability of starting up and reading telephone directory.
SUMMERY OF THE UTILITY MODEL
The utility model provides a smart card and terminal system for carry out data transmission among the solution prior art because the smart card adopts between the same speed and terminal equipment, the user card, and lead to the problem of data transmission time overlength in the whole terminal system.
The utility model discloses a:
a smart card, comprising: the system comprises a first interface controller, a second interface controller and a central processing unit; wherein,
the first interface controller is connected with the terminal equipment through the contact of the intelligent card;
the second interface controller is connected with the user card through the contact of the smart card;
the central processing unit is respectively connected with the first interface controller and the second interface controller, and is used for negotiating with the terminal equipment to determine a first rate for transmitting data between the first interface controller and the terminal equipment, and negotiating with the user card to determine a second rate for transmitting data between the second interface controller and the user card.
A terminal system, comprising:
a smart card as described above;
the terminal equipment is connected with the first interface controller of the intelligent card;
and the user card is connected with the second interface controller of the intelligent card.
The utility model provides a smart card and terminal system, the data transmission rate can be confirmed respectively to terminal equipment and the user card that connects to the smart card for the smart card no longer is limited to and uses the same speed and terminal equipment and user card to carry out data transmission, has improved the work efficiency of smart card, makes the inside data transmission who goes on of terminal system who comprises smart card, terminal equipment and user card break away from the restriction that receives the lower speed of user card.
Drawings
Fig. 1 is a schematic diagram of a smart card according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another smart card according to an embodiment of the present invention.
Detailed Description
In order to improve the data transmission rate between smart card and terminal equipment and the user card, shorten data transmission time, the embodiment of the utility model provides a smart card. The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The utility model provides a smart card embodiment, as shown in FIG. 1, smart card 101 is connected between terminal equipment 102 and user card 103, include: a first interface controller 104, a second interface controller 105, a central processing unit 106; the central processor 106 is connected to the first interface controller 104 and the second interface controller 105 through an AHB (Advanced high performance Bus), the first interface controller 104 is connected to the terminal device 102 through each contact of the smart card, and the second interface controller 105 is connected to the user card 103 through each contact of the smart card. According to the international standard ISO/IEC 7816 protocol of the smart card, the contacts of the smart card comprise: a C1 contact connected to a power supply pin Vcc of the smart card chip, a C2 contact connected to a reset signal pin RST, a C3 contact connected to a clock signal pin CLK, a C7 contact connected to an input/output pin I/O, and a C5 contact connected to a ground pin GND.
The utility model discloses a data transmission rate can be confirmed respectively to terminal equipment and user card to the smart card for the smart card is not restricted to and can only use the same speed and terminal equipment and user card to carry out data transmission, compares prior art, the utility model provides the high work efficiency of smart card has shortened the time of the inside data transmission of terminal equipment who uses the smart card.
The terminal device 102 is any terminal that can communicate with an operating network through a user Card and provide communication services and information services for a user, for example, the terminal device 102 is a mobile phone device, a netbook, a notebook computer, or the like, and the user Card 103 is a user identification Card used in an operator network, such as a SIM Card, a UICC (Universal Integrated Circuit Card), a USIM (Universal subscriber Identity Module) Card, or the like.
The smart card 101, the user card 103 and the terminal device 102 all use a default rate of 9600bps to transmit data before the data transmission rate among each other is not determined, and the rate is the lowest rate that can be supported by a common smart card, a user card and a terminal device.
Will the embodiment of the utility model provides an intelligent card 101, user card 103 insert respectively terminal equipment 102 in the predetermined IFD (Interface Device), intelligent card 101, user card 103 put through respectively behind each contact of card itself, intelligent card 101 is through the Reset signal that C2 contact receiving terminal equipment 102 sent To directly forward this Reset signal To user card 103, then user card 103 resets and returns ATR (Answer To Reset, all kinds of information that the communication was used have been established between user card and the terminal equipment To the byte (carried in the ATR byte). After the power-on is successful, the smart card 101 respectively determines a second rate V2 and a first rate V1 used for data transmission with the user card 103 and the terminal device 102 by the following methods:
in step a1, the second interface controller 105 receives the ATR byte sent by the user card 103 through the C7 contact and forwards it to the central processor 106.
In step a2, the cpu 106 obtains the optimal speed v _ user supported by the user card 103 described in TA1 characters in the ATR byte, and saves a copy of the ATR byte.
In step a3, the cpu 106 determines whether the smart card 101 supports the optimal speed v _ user supported by the user card 103, and if so, executes step a4, otherwise, executes step a 5.
In step a4, the cpu 106 sends a PPS (Protocol and parameter Select) response message containing supportable information to the user card 103, informs the user card 103 that the second rate V2 used by the second interface controller 105 for data transmission therebetween is the optimal rate V _ user supported by the user card 103, and then executes step a 10.
The relationship between the smart card 101 and the user card 103 is a master-slave relationship, and the smart card 101 determines the data transmission rate between the two.
In step a5, the central processing unit 106 sends a PPS request message to the user card 103 via the second interface controller 105, where the PPS request message includes a second negotiated rate v _ ic _ user that can be supported by the smart card 101 currently selected by the central processing unit 106 and is different from the optimal rate v _ user supported by the user card 103. The next step is performed.
The smart card 101 has a second negotiation rate selection table, in which a plurality of rates with different levels are stored according to a priority order, and the central processing unit 106 selects a rate with the highest priority from among the rates less than the rate v _ user in the second negotiation rate selection table as a second negotiation rate v _ ic _ user according to the obtained optimal rate v _ user supported by the user card 103.
At step a6, the second interface controller 105 receives the PPS response message returned by the user card 103 through the C7 contact and forwards it to the central processor 106.
Step a7, the central processing unit 106 reads the information content contained in the PPS response message, and determines whether the user card 103 supports the second negotiation rate v _ ic _ user; if so, go to step a 8; otherwise, step a9 is performed.
Step a8, the central processing unit 106 determines the second speed V2 used for subsequent data transmission between the second interface controller 105 and the user card 103 as the second negotiated speed V _ ic _ user;
in step a9, the cpu 106 selects a new second negotiated rate v _ ic _ user (i.e. different from the previously used second negotiated rate and also different from the optimal rate v _ user supported by the user card 103), and returns to execute step a5 until it is determined that the user card 103 supports the second negotiated rate v _ ic _ user selected by the cpu 106, and then executes step a 10.
The central processing unit 106 selects a rate with a priority lower than the previously selected second negotiated rate from the rates less than the rate v _ user stored in the second negotiated rate selection table as a newly selected second negotiated rate v _ ic _ user.
At step a10, CPU 106 modifies TA1 characters in the ATR byte copy to record the optimal rate v _ ic supported by smart card 101, and then sends the ATR byte copy to terminal 102 via first interface controller 104.
In step a11, the first interface controller 104 receives the APDU command or the PPS request message returned by the terminal device 102 through the C7 contact point and forwards it to the central processor 106.
Step a12, when the central processing unit 106 determines that the APDU command is received, it is determined that the terminal device 102 will use the default rate (9600bps) as the first rate V1 for data transmission with the first interface controller 104 thereafter, and the central processing unit 106 also determines that the first interface controller 104 will use the default rate for data transmission with the terminal device 102 thereafter; otherwise, the central processor 106 performs step a13 when it determines that the PPS request message is received.
The terminal device 102 and the smart card 101 are in a master-slave relationship, and the terminal device 102 determines the data transmission rate finally used between the two.
Step a13, after determining that the terminal device 102 cannot support the optimal rate v _ ic supported by the smart card 101, the central processor 106 instructs the first interface controller 104 to wait for the PPS request message sent by the terminal device 102, and reads the first negotiated rate v _ me _ ic contained in the PPS request message after receiving the PPS request message, where the first negotiated rate v _ me _ ic is a rate that the terminal device 102 currently selected can support and is different from the optimal rate v _ ic supported by the smart card 101; the central processing unit 106 determines whether the smart card 101 can support the first negotiation rate v _ me _ ic, if so, execute step a 14; otherwise, step a15 is performed.
The terminal device 102 has a first negotiation rate selection table, wherein a plurality of rates with different levels are stored according to a priority order, and the terminal device 102 selects a rate with the highest priority from the rates smaller than the rate v _ ic in the first negotiation rate selection table as a first negotiation rate v _ me _ ic according to the obtained optimal rate v _ ic supported by the smart card 101.
Step a14, the central processor 106 determines that the first speed V1 used by the first interface controller 104 and the terminal device 102 for subsequent data transmission is the first negotiated speed V _ me _ ic, and returns a PPS response message containing information confirming support of the first negotiated speed V _ me _ ic to the terminal device 102 through the first interface controller 104, so as to notify the terminal device 102 that the smart card 101 supports the first negotiated speed V _ me _ ic, and agree to use the speed for data transmission with the terminal device 102. The process is ended.
Step a15, the central processor 106 returns a PPS response message containing confirmation that the first negotiated rate v _ me _ ic is not supported to the terminal device 102 through the first interface controller 104, so as to notify the terminal device 102 that the smart card 101 does not support the first negotiated rate v _ me _ ic, request the terminal device 102 to continue to select the new first negotiated rate v _ me _ ic, and continue to send a PPS request message containing the new first negotiated rate v _ me _ ic to the first interface controller 104, and then return to execute step a13 until it is determined that the smart card 101 supports the first negotiated rate v _ me _ ic selected by the terminal device 102, and end the processing.
The terminal device 102 selects a rate with a priority lower than the previously selected first negotiation rate from the rates stored in the first negotiation rate selection table and smaller than the rate v _ ic as a newly selected first negotiation rate v _ me _ ic.
After the smart card 101 determines the first rate V1 and the second rate V2, respectively, the terminal device 102 and the first interface controller 104 will use the first rate V1 for information transmission, and the user card 103 and the second interface controller 105 will use the second rate V2 for information transmission. When the first interface controller 104 receives the information sent by the terminal device 102, the information is reported to the central processing unit 106 for corresponding processing, and then the central processing unit 106 sends the processed information to the second interface controller 105, and finally the processed information reaches the user card 103; on the contrary, when receiving the information sent by the user card 103, the second interface controller 105 reports the information to the central processing unit 106 for corresponding processing, and then the central processing unit 106 sends the processed information to the first interface controller 104, and finally the processed information reaches the terminal device 102.
The embodiment of the utility model provides an in, smart card 101 is applied to between terminal equipment 102 and the user card 103, is responsible for handling the data that one of them party sent and forwards the other party again. The central processor 106 of the smart card 101 determines the second rate V2 used for data transmission between the second interface controller 105 and the user card 103 in a negotiation manner with the user card 103, and determines the first rate V1 used for data transmission between the first interface controller 104 and the terminal device 102 in a negotiation manner with the terminal device 102, wherein the second rate V2 and the first rate V1 may be the same or different. Compared with the prior art, the utility model discloses the smart card of embodiment has higher work efficiency, has shortened the required time of carrying out information transmission between terminal equipment 102 and the user card 103.
Preferably, the first interface controller 104 and the second interface controller 105 are controllers with the first rate and the second rate different in magnitude.
Preferably, the central processor 106 is further connected to the first interface controller 104 and the second interface controller 105 through an APB (Advanced Peripheral Bus).
Preferably, the clock signal pin CLK connected to the first interface controller 104 and the clock signal pin CLK connected to the second interface controller 105 are connected together by a wire, as shown in fig. 2 (the internal module of the smart card is hidden in the figure), so that the clock of the terminal device 102 can be used to provide the clock signal for the user card 103, and the frequency dividing circuit in the smart card can be omitted.
The utility model discloses it is right the in-process of negotiation definite first rate, first rate specifically is selected by the central processing unit 106 of smart card, still is selected by terminal equipment 102 and is not restricted, in view of under general conditions, compares the central processing unit 106 of smart card, and terminal equipment 102 has more perfect data analysis processing function, and is preferred, terminal equipment 102 selects the first rate that central processing unit 106 and terminal equipment 102 all supported.
Similarly, the present invention provides a process of determining the second rate by the negotiation, where the second rate is specifically selected by the central processing unit 106 of the smart card or selected by the user card 103 without limitation, and in view of general situation, compared with the user card 103, the central processing unit 106 of the smart card has a more complete data analysis and processing function, and preferably, the central processing unit 106 selects the second rate supported by both the central processing unit 106 and the user card 103.
The embodiment of the utility model provides a terminal system, including above-mentioned embodiment smart card 101, with terminal equipment 102 that smart card 101's first interface controller 104 is connected, with user's card 103 that smart card 101's second interface controller 105 is connected. The smart card 101 is responsible for correspondingly processing information from one of the terminal device 102 and the user card 103 and then forwarding the information to the other, and the rate used for information transmission between the terminal device 102 and the user card 103, which is determined by the smart card 101, may be the same as or different from the rate used for information transmission between the terminal device 102 and the user card 103.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A smart card, comprising: a first interface controller (104), a second interface controller (105) and a central processing unit (106); wherein,
the first interface controller (104) is connected with the terminal equipment (102) through the contact of the smart card;
the second interface controller (105) is connected with the user card (103) through the contact points of the smart card;
the central processing unit (106) is respectively connected with the first interface controller (104) and the second interface controller (105), and is used for negotiating with the terminal device (102) to determine a first rate for transmitting data between the first interface controller (104) and the terminal device (102), and negotiating with the user card (103) to determine a second rate for transmitting data between the second interface controller (105) and the user card (103).
2. The smart card of claim 1 wherein the first interface controller (104) and the second interface controller (105) are controllers of different magnitudes for the first rate and the second rate.
3. The smart card of claim 1, wherein the central processor (106) is connected to the first interface controller (104) and the second interface controller (105) via a system bus AHB or a peripheral bus APB, respectively.
4. The smart card of claim 1, wherein the contacts of the smart card comprise:
the contact is connected with a power supply pin Vcc of the intelligent card chip, the contact is connected with a reset signal pin RST, the contact is connected with a clock signal pin CLK, the contact is connected with an input/output pin I/O, and the contact is connected with a ground wire pin GND.
5. The smart card of claim 4, wherein the clock signal pin CLK connected to the first interface controller (104) and the clock signal pin CLK connected to the second interface controller (105) are wired together.
6. A terminal system, comprising:
the smart card of any of claims 1 to 5;
a terminal device (102) connected to a first interface controller (104) of the smart card;
a user card (103) connected to a second interface controller (105) of the smart card.
7. The terminal system of claim 6,
the terminal equipment (102) is mobile phone equipment/notebook computer.
8. The terminal system of claim 6,
the user card (103) is a subscriber identity module SIM card/universal integrated circuit card UICC/universal subscriber identity module USIM card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120537713 CN202495078U (en) | 2011-12-20 | 2011-12-20 | Smart card and terminal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120537713 CN202495078U (en) | 2011-12-20 | 2011-12-20 | Smart card and terminal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202495078U true CN202495078U (en) | 2012-10-17 |
Family
ID=47001293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120537713 Expired - Lifetime CN202495078U (en) | 2011-12-20 | 2011-12-20 | Smart card and terminal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202495078U (en) |
-
2011
- 2011-12-20 CN CN 201120537713 patent/CN202495078U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100015 Beijing city Chaoyang District Dongzhimen West eight Street No. 2 room Wanhong Yan Dong Business Garden Patentee after: Beijing Watchdata Limited by Share Ltd Address before: 100015 Beijing city Chaoyang District Dongzhimen West eight Street No. 2 room Wanhong Yan Dong Business Garden Patentee before: Beijing Woqi Data System Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |
|
| CX01 | Expiry of patent term |