CN101742713A - Smart card - Google Patents
Smart card Download PDFInfo
- Publication number
- CN101742713A CN101742713A CN200810177986A CN200810177986A CN101742713A CN 101742713 A CN101742713 A CN 101742713A CN 200810177986 A CN200810177986 A CN 200810177986A CN 200810177986 A CN200810177986 A CN 200810177986A CN 101742713 A CN101742713 A CN 101742713A
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- China
- Prior art keywords
- application processor
- smart card
- sleep state
- usb controller
- control register
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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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a smart card. In the invention, the smart card comprises a control register, a USB controller and an application processor, wherein the control register is used for storing an indicator which indicates a sleep state or an indicator which indicates a working state; the USB controller is used for setting the indicator which indicates the sleep state in the control register when the USB controller is about to enter the sleep state; and the application processor is used for stopping working to enter the sleep state when the application processor is in an idle state and the indication which presents entering the sleep state is stored in the control register. The application processor in the smart card can stop working and enter the sleep state when being in an idle state in which no application program is executed, so the electric power consumption is reduced.
Description
Technical field
The present invention relates to a kind of smart card.
Background technology
Current, the smart card that uses in moving communicating field only comprises SIM (subscriber identity module) kernel that is used to realize security feature usually, and therefore, smart card is also referred to as SIM card usually like this.
Along with development of technology, except comprising the SIM kernel, also comprise the application processor part that is used for executive utility in the smart card.This application processor part except comprising application processor, the general flash memory (Flash Memory) that also comprises the nonvolatile memory (RAM) that is used for permanent storage application program and data and be used for temporary storaging data.The smart card of this SIM of having kernel and application processor part is also referred to as the MegaSIM card usually.
Fig. 1 shows the schematic diagram of existing MegaSIM card.As shown in Figure 1, except comprising SIM kernel and application processor part, the MegaSIM card also comprises USB controller and ISO7816 controller, wherein, SIM kernel in the MegaSIM card utilizes the ISO7816 controller via ISO7816 interface and communication of mobile terminal, and the application processor in the MegaSIM card partly utilizes the USB controller via USB interface and communication of mobile terminal.
The MegaSIM card obtains working power from the portable terminal that it inserted, and when mobile terminal-opening, the MegaSIM card is moved the terminal electrifying startup.After the MegaSIM card was moved the terminal electrifying startup, application processor in MegaSIM card part was just in running order always, till portable terminal shutdown or MegaSIM card take off from portable terminal.
Application processor part in the MegaSIM card needs the electric consumption energy when in running order, therefore, with respect to the normal procedure intelligent card that only has the SIM kernel, the more energy content of battery of MegaSIM calorie requirement consumption, thereby, when the portable terminal that has a battery of finite energy when use was inserted into the MegaSIM card with SIM kernel and application processor part, the stand-by time of portable terminal had just become to influence a key factor of mobile terminal system performance.
Summary of the invention
Consider the above-mentioned defective of prior art, the object of the present invention is to provide a kind of smart card, wherein, the application processor in this smart card can enter out-of-work sleep state when being in the idle condition of executive utility not, thereby reduces the consumption to power supply energy.
In order to realize purpose of the present invention, according to a kind of smart card of the present invention, comprising: control register is used to preserve expression and enters the indication that dormant indication or expression enter operating state; The USB controller is used for to described control register described expression being set and entering dormant indication when described USB controller is desired to enter sleep state; And application processor is used for being in idle condition and preserving described expression when entering dormant indication at described control register when described application processor, and quitting work enters sleep state.
Description of drawings
Other purpose of the present invention, characteristic and advantage will become more apparent by the detailed description below in conjunction with accompanying drawing, wherein:
Fig. 1 shows the schematic diagram of existing MegaSIM card.
Fig. 2 is the structural representation that illustrates according to the smart card of one embodiment of the invention.
Fig. 3 is the flow chart that the process of changing between sleep state and operating state according to the application processor in the smart card of one embodiment of the invention is shown.
Embodiment
According to the USB2.0 standard, when using USB interface to come two equipment of interaction data not use USB interface to come interaction data within a certain period of time, these two equipment USB controller separately will initiatively enter sleep state.If have order or data to send to these two equipment USB controller separately in sleep state, then these two equipment USB controller separately will be according to the USB Remote Wake Up process rearming of stipulating in the USB2.0 standard.
Realize according to the smart card of each embodiment of the present invention above-mentioned characteristic based on USB controller in the USB2.0 standard.
Below, will describe each embodiment of the present invention in conjunction with the accompanying drawings in detail.
Fig. 2 is the structural representation that illustrates according to the smart card of one embodiment of the invention.As shown in Figure 2, smart card 100 comprises control register 110, USB controller 120, application processor 130, nonvolatile memory (RAM) 140, flash memory (Flash Memory) 150, SIM kernel 160 and ISO7816 controller 170.
Wherein, control register 110 is used to preserve expression that USB controller 120 is provided with and enters the indication that dormant indication or expression enter operating state.
Application processor 130 is used for carrying out the application program that is kept at nonvolatile memory 140, and when application processor 130 is in the idle condition of executive utility not and preserves expression when entering dormant indication in control register 110, quitting work enters sleep state.
Nonvolatile memory 140 is used for for good and all storing the data that application processor 130 performed application program, application processor 130 employed data and application processor 130 executive utilities are generated.
Flash memory 150 is used for storing the data that application processor 130 executive utilities are generated temporarily.
SIM kernel 160 is used to realize safety function.
ISO7816 controller 170 is used to be implemented in the exchanges data between the portable terminal M that SIM kernel 160 and smart card 100 inserted.
Fig. 3 is the flow chart that the process of changing between sleep state and operating state according to the application processor in the smart card of one embodiment of the invention is shown.As shown in Figure 3, the portable terminal M swap data that is not inserted in the given time when smart card 100 via USB controller 120 and smart card 100, when thereby USB controller 120 was desired to enter sleep state according to the USB2.0 standard, USB controller 120 was provided with expression to control register 110 and enters dormant indication (step S200).
Then, USB controller 120 enters sleep state (step S210) according to the USB2.0 standard.
When application processor 130 was in the idle condition of executive utility not, application processor 130 checked that periodically whether preserving expression in the control register 110 enters dormant indication (step S220).
When the check result of step S220 for certainly the time, application processor 130 quits work and enters sleep state (step S230) from operating state.
When USB controller 120 received order or data from the portable terminal M that smart card 100 is inserted, USB controller 120 entered operating state (step S240) according to the USB2.0 standard from sleep state.Wherein, can to be the portable terminal M response send to application processor 130 in the phone that receives or short message for this order or data, or the portable terminal M response is checked the time, listened such request such as MP3 and recreation and send to application processor 130 such as user key-press in what the user initiatively initiated.
It will be appreciated by those skilled in the art that smart card of the present invention is not limited to the disclosed smart card of the foregoing description.In other embodiments of the invention, smart card can not comprise nonvolatile memory (RAM) 140 and/or flash memory (Flash Memory) 150, and perhaps, smart card can not comprise SIM kernel 160 and ISO7816 controller 170.
It will be appreciated by those skilled in the art that the disclosed smart card of above-mentioned each embodiment of the present invention can make various distortion and change under the situation that does not depart from invention essence, therefore, protection scope of the present invention is defined by appending claims.
Claims (5)
1. smart card comprises:
Control register is used to preserve expression and enters the indication that dormant indication or expression enter operating state;
The USB controller is used for to described control register described expression being set and entering dormant indication when described USB controller is desired to enter sleep state; And
Application processor is used for being in idle condition and preserving described expression when entering dormant indication at described control register when described application processor, and quitting work enters sleep state.
2. smart card as claimed in claim 1, wherein
Described USB controller be further used for when its when sleep state enters operating state, start described application processor so that described application processor enters operating state.
3. smart card as claimed in claim 2, wherein
Described USB controller be further used for when its when sleep state enters operating state, to described control register the indication that described expression enters operating state is set.
4. smart card as claimed in claim 1 wherein, also comprises:
The SIM kernel is used to realize safety function; And
The ISO7816 controller is used to realize the exchanges data between the portable terminal that described SIM kernel and described smart card inserted.
5. smart card as claimed in claim 1 wherein, also comprises:
Nonvolatile memory is used for for good and all storing application program, the data of described application processor use and/or the data that described application processor executive utility generates that described application processor is carried out; And
Flash memory is used for the data that the described application processor of interim storage generates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810177986A CN101742713A (en) | 2008-11-26 | 2008-11-26 | Smart card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810177986A CN101742713A (en) | 2008-11-26 | 2008-11-26 | Smart card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101742713A true CN101742713A (en) | 2010-06-16 |
Family
ID=42465386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810177986A Pending CN101742713A (en) | 2008-11-26 | 2008-11-26 | Smart card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101742713A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916390A (en) * | 2010-07-05 | 2010-12-15 | 武汉天喻信息产业股份有限公司 | RF-SIM (Radio Frequency-Subscriber Identity Model) card circuit and control method thereof |
| CN104243683A (en) * | 2013-06-24 | 2014-12-24 | 中兴通讯股份有限公司 | Data processing method, terminal, user identification card and data processing system |
-
2008
- 2008-11-26 CN CN200810177986A patent/CN101742713A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916390A (en) * | 2010-07-05 | 2010-12-15 | 武汉天喻信息产业股份有限公司 | RF-SIM (Radio Frequency-Subscriber Identity Model) card circuit and control method thereof |
| CN104243683A (en) * | 2013-06-24 | 2014-12-24 | 中兴通讯股份有限公司 | Data processing method, terminal, user identification card and data processing system |
| CN104243683B (en) * | 2013-06-24 | 2019-09-13 | 南京中兴软件有限责任公司 | A kind of method, terminal, Subscriber Identity Module and system handling data |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100616 |