CN107729972A - A kind of data guard method of intellective IC card - Google Patents
A kind of data guard method of intellective IC card Download PDFInfo
- Publication number
- CN107729972A CN107729972A CN201710778332.6A CN201710778332A CN107729972A CN 107729972 A CN107729972 A CN 107729972A CN 201710778332 A CN201710778332 A CN 201710778332A CN 107729972 A CN107729972 A CN 107729972A
- Authority
- CN
- China
- Prior art keywords
- card
- main control
- control chip
- intellective
- security module
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
- G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers
Abstract
The present invention provides a kind of data guard method of intellective IC card, and the intellective IC card includes battery, main control chip, security module and communication interface module, and the data guard method comprises the following steps：1) when detecting with corresponding card reader or read write line coupling, main control chip provides the electric energy for coming from battery to security module, makes electricity in security module and starts card operation system；2) new data caused by transaction is buffered in the internal memory of security module by card operation system, disposably, is uniformly written to the new data cached in the internal memory in the solidification memory block of security module after end to be transacted；3) when detecting that communication interface departs from coupling with corresponding card reader or read write line, main control chip controls the security module delay cut-off.The present invention can be significantly reduced exchange hour, improve transactions velocity；EEPROM or Flash service life can effectively be extended.
Description
Technical field
The present invention relates to IC-card technical field, and specifically, the present invention relates to a kind of data guard method of intellective IC card.
Background technology
At present, intellective IC card have been widely used for doing shopping, entertain, gate inhibition, the every field such as Internet of Things.IC-card is integrated
The English abbreviation of circuit card (Integrated Circuit Card).One special IC chip is embedded in and met
In PVC (or ABS etc.) plastic substrate of respective standard, and card form is packaged into, that is, an IC-card is made.Certainly, IC-card
The special shapes such as button, key, jewelry can be packaged into.
Microprocessor unit, memory cell (RAM, ROM and EEPROM) and communication interface are generally comprised inside intellective IC card
Unit.Wherein, RAM is used to deposit the intermediate data in calculating process, and being solidified with card internal operating system in ROM, (COS, full name are
Chip Operating System, for ease of description, card internal operating system is hereinafter referred to as COS systems), and EEPROM is
Programmable read only memory, it is generally used for depositing the personal information of holder and issues unit for information about.
Intellective IC card is usually required to carry out data interaction by read write line and updated the data, if unexpected when updating the data
Power down, the data that may result in EEPROM are damaged, and significant data is often stored in EEPROM, and this damage is often
Whole intellective IC card can be caused to scrap.Therefore, in order to avoid the significant data deposited in EEPROM is damaged, existing COS
Power down preventing protection mechanism is devised in system.When updating the data every time, existing COS systems need first will be to be updated old
Data are written in EEPROM (can also be other types of programmable storage, such as Flash) as backup, are then repaiied again
Change, update the data, finally wipe backup again or Backup Data is failed.This power down preventing protection mechanism can effectively protect number
According to however, its time for each instruction is long, causing whole exchange hour also elongated, be increasingly difficult to meet people for quick
The requirement of transaction.
Therefore, currently there is an urgent need to a kind of data protection solution that can shorten exchange hour.
The content of the invention
Therefore, task of the invention is to provide a kind of data protection solution that can shorten exchange hour.
The invention provides a kind of data guard method of intellective IC card, the intellective IC card include battery, main control chip,
Security module and communication interface module, the data guard method comprise the following steps：
1) detect whether communication interface couples with corresponding card reader or read write line, when being judged as YES, main control chip to
Security module provides the electric energy for coming from battery, makes electricity in security module and starts card operation system；
2) new data caused by transaction is buffered in the internal memory of security module by card operation system, by institute after end to be transacted
The new data cached in internal memory is stated disposably, to be uniformly written in the solidification memory block of security module；
3) whether main control chip detection communication interface departs from corresponding card reader or read write line and couples, when being judged as YES
When, main control chip controls the security module delay cut-off.
Wherein, the data guard method also includes：When battery electric quantity is less than default first gear threshold value, intelligence
IC-card issues the user with low battery alarm；When battery electric quantity is less than default second gear threshold value, main control chip is forbidden pacifying
Full module work.
Wherein, the communication interface module comprises at least NFC interface, in the step 1), by the line for detecting NFC interface
The induction electric energy of circle judges whether communication interface couples with corresponding card reader or read write line.
Wherein, the communication interface module also includes contact communication interface；In the step 1), when security module works
When under contact condition, by detecting whether contact communication interface is connected to judge to communicate with corresponding card reader or read write line
Whether interface couples with corresponding card reader or read write line.
Wherein, the step 2) includes substep：
21) card operation system receives instruction；
22) card operation system execute instruction；
23) judge whether this transaction needs to update the data, if it is, step 24) is performed, if not, directly performing step
It is rapid 25)；
24) new data is organized in internal memory and be buffered in internal memory, wait solidification memory block to be written；Continue executing with step
It is rapid 25)；
25) data that tissue returns；
26) also other instructions are judged whether, if it is, return to step 21), if not, performing step 27)；
27) assert closing the transaction, all new data in internal memory disposably, is uniformly write in solidification memory block.
Wherein, the step 3) includes substep：
31) detect whether communication interface couples with corresponding card reader or read write line disconnection, when being judged as YES, master control core
Piece starts timing；
32) when timing reaches preset time threshold, main control chip powers off to security module.
Wherein, the main control chip includes the output port of power source being connected with the power input port of security module, the electricity
Source output terminal mouth can export the high level for meeting security module operating voltage requirement；
In the step 1), when main control chip is not detected by communication interface and coupled with corresponding card reader or read write line,
The output port of power source of main control chip keeps low level；When main control chip detects communication interface and corresponding card reader or read-write
When device couples, main control chip controls output port of power source output high level, so that electricity and starting card in security module and grasping
Make system.
Wherein, the data guard method also includes：Shield card operation system electric in NFC induced voltages triggering security module
System Starting mode.
Wherein, the low battery alarm is the alarm by one or more modes in screen, vibration, sound, bluetooth.
Compared with prior art, the present invention has following technique effect：
1st, intellective IC card data guard method of the invention can be significantly reduced exchange hour, improve transactions velocity.
2nd, intellective IC card data guard method of the invention can reduce flash EEPROM or Flash number, effectively
Extend EEPROM or Flash service life.
Brief description of the drawings
Hereinafter, embodiments of the invention are described in detail with reference to accompanying drawing, wherein：
Fig. 1 shows the electricity structure block diagram of the intellective IC card in one embodiment of the invention；
Fig. 2 shows the flow chart of the data guard method of the intellective IC card in one embodiment of the invention.
Embodiment
Inventor, which studies, to be found, the COS systems of existing intellective IC card generally employ power down preventing protection mechanism, this protection
Under mechanism, it is required for that first legacy data to be updated is written in EEPROM as backup, Ran Houzai when updating the data every time
Change, update the data, finally wipe backup again or Backup Data is failed.And the process of flash EEPROM generally requires to consume
The substantial amounts of time, exchange hour is caused to extend.To overcome this problem, a kind of power supply units such as support battery are inventors herein proposed
Power supply so that Backup Data need not be first written to EEPROM, and then improve the new data protection schemes of transactions velocity.Under
Face is further described through to the present invention in conjunction with the accompanying drawings and embodiments.
Fig. 1 shows the electricity structure block diagram of the intellective IC card in one embodiment of the invention, and the intellective IC card includes
Battery, power management module, main control chip, security module (SE) and communication interface module.Wherein communication interface module at least wraps
Include NFC interface, alternatively, communication interface can also include one in the communication interface such as bluetooth, USB, audio, light, ultrasound or
It is multinomial.Alternatively, intellective IC card also includes human-computer interaction module, and human-computer interaction module includes the members such as display screen, button, sensor
It is one or more in part.
In the present embodiment, battery is used to power to power management module.Power management module respectively with main control chip, communication
Interface module and human-computer interaction module interconnection, for being converted into the electric energy of battery to be adapted to main control chip, communication interface mould respectively
The supply voltage of the modules such as block and human-computer interaction module.
Main control chip is interconnected with SE, communication interface module and human-computer interaction module respectively, and main control chip, which is used to control, to be contacted
The operation of other modules in intellective IC card, it is to contact the bridge between modules.Especially, in the present embodiment, master control
Chip controllably can power for SE, also, the power supply of main control chip is externally fed, and its electric energy comes from battery, rather than
Come from the induction electric energy of NFC interface.In the prior art, NFC interface generally includes induction coil, when intellective IC card is close to Card Reader
During device (or read write line), the excitation for the radiofrequency signal that induction coil is sent by card reader (or read write line) produces induced electricity
Can, this induction electric energy is powered for SE, SE is started working.And in the present embodiment, main control chip provides output port of power source, should
Output port of power source and SE power input port are connected, and stable power supply is provided for SE.Further, it is preferable to carry out at one
In example, in order to which main control chip is better achieved to the NFC detections merchandised and the power supply control to SE chips, in NFC antenna
On (induction coil of i.e. previously described NFC interface) add a radiofrequency field circuit for detecting, the radiofrequency field circuit for detecting again with
Main control chip is connected and provided for main control chip for judging whether IC-card has come into the signal of radiofrequency field, so that winner
Control chip has control foundation and control condition to the SE controls powered.
SE includes processor, internal memory and EEPROM.Wherein, EEPROM can also be substituted with Flash, hereinafter be repeated no more.
Card internal operating system, i.e. COS systems are mounted with SE.Intellective IC card items intelligent use function can be realized by COS systems.
Based on above-mentioned intellective IC card, a kind of data protection side that can dramatically speed up transactions velocity is present embodiments provided
Method, including：Under SE any working condition (including SE is operated under contactless state), all controlled to SE and carried from main control chip
For externally fed.Also, in whole SE process of exchanges, main control chip provides stable externally fed to SE.Merchandising
After journey terminates, main control chip still will be delayed after a period of time, then disconnect the externally fed to SE.So, on the one hand can protect
The time that COS systems inside card SE have abundance completes all instructions and performs action, and all new number that will be organized in internal memory
According to being all written in solidification memory block (such as EEPROM), on the other hand also the power saving of off working state time can be in SE
Energy, extend the usage time of battery.
In one embodiment, with reference to the power management module inside intellective IC card, low battery guarantor can be further provided for
Protective function.It is two gears by low battery protection setting, so can both ensures good Consumer's Experience, SE can be maintained to pacify again
The requirement powered entirely.
First gear：When battery electric quantity is less than default first gear threshold value (such as 20%), intellective IC card to
Family sends low battery alarm, and prompting user charges as early as possible, in time or replacing battery.In one example, power management module
The dump energy of battery is detected, and compares dump energy and threshold value, when battery electric quantity is less than threshold value, is sent out to main control chip
Go out alarm signal, main control chip controls human-computer interaction module to be alarmed accordingly when receiving alarm signal.Such as pass through
The modes such as screen, vibration, sound, bluetooth are alarmed.
Second gear：When battery electric quantity is less than default second gear threshold value (such as 10%), intellective IC card prompting
User's low battery, safe capacity limit is alreadyd exceed, now main control chip forbids SE to work.Main control chip forbids SE work simultaneously
Other functions are not influenceed, such as the function such as screen display, motor vibration, loudspeaker/buzzer, bluetooth communication interface can normally make
With.In one example, the dump energy of power management module detection battery, and compare dump energy and limiting value, work as battery
When electricity is less than limiting value, alarm signal is sent to main control chip, main control chip controls man-machine when receiving the alarm signal
Interactive module is alarmed accordingly.Such as alarmed by modes such as screen, vibration, sound, bluetooths.At the same time, master control core
Piece is forced to disconnect the externally fed to SE, to forbid SE to work, so as to avoid the data in SE from being damaged.
After adding above-mentioned low battery defencive function, the possibility of accident power-off is not present in SE.COS systems in so SE are just not
Need to consider in each execution process instruction and complex designing, the multiple flash EEPROM/Flash of needs power down preventing is protected
Protection mechanism, it is only necessary to it is in need write-in solidify memory block new data be all temporarily held in internal memory, in process of exchange knot
Shu Hou, again property, uniformly be written to solidification memory block, thus greatly save flash EEPROM/Flash's
Number, instruction execution speed is improved, accelerate transactions velocity.
Further, Fig. 2 shows the data guard method accelerated the operation speed in one embodiment of the invention
Flow chart, the data guard method are suitable to the situation that SE is operated under contactless state, specifically include the following steps：
Step 1：Electricity on main control chip control SE.In one example, the induced voltage of NFC interface is detected, works as induced electricity
When pressure exceedes default voltage threshold, main control chip is powered to SE.COS system starts after the upper electricity of SE.
Step 2：COS systems receive instruction.
Step 3：COS system execute instructions.
Step 4：Judge whether that needs update the data, if it is, step 5 is performed, if not, directly performing step 6.
Step 5：New data is organized and is buffered in internal memory in internal memory, waits solidification memory block to be written.Pay attention to, this
In step, new data is not written into solidification memory and backed up.After step 5 terminates, step 6 is continued executing with.
Step 6：Organize the data returned.
Step 7：Judge whether also other instructions, if it is, return to step 2, if not, performing step 8.
Step 8：Assert closing the transaction, by internal memory all new data write-in solidification memory block (such as EEPROM or
Flash in).
Step 9：Main control chip controls SE delay cut-offs.In one example, the induced voltage of NFC interface is detected, works as sense
When answering the voltage to be less than default voltage threshold, main control chip starts timing (such as using timer timing), when timing reaches
Between threshold value when, main control chip disconnects the power supply to SE.This be used for delay cut-off time threshold can according in EEPROM or
The maximum of the time of the upper erasable data of Flash is set.
Based on the flow of above-mentioned data guard method, all new data write-once after closing the transaction solidifies memory block
In.So avoid to considerably improve transactions velocity to the erasable of solidification memory block in process of exchange.Especially handing over
In the case of easy process includes a plurality of instruction, above-mentioned data guard method is avoided in each process of exchange to solidification memory
Repeatedly erasable, the lifting of transactions velocity is more obvious.
It should be noted that in above-described embodiment, main control chip is to SE power supplies and employs the design of delay cut-off.Cause
This, in step 8, when closing the transaction, intellective IC card can depart from the induction range of card reader.Setting based on delay cut-off
Meter, intellective IC card can continue data processing within a period of time after " swiping the card " terminates, complete to write all new data
Enter to solidify the work of memory block.For a user, the exchange hour that he is experienced is actually to " brush since " swiping the card "
That time that card " terminates, write new data into the exchange hour often do not experienced in user of time of solidification memory block
Within, therefore the intellective IC card of the present invention can allow user to have more efficiently usage experience.
Further, in one embodiment, main control chip provides an output port of power source, and the output port of power source can
Offer meets SE operating voltage requirements.The output port of power source of main control chip and SE power input port connect.In master control core
When piece is not detected by the induced voltage of the coil of NFC interface, the output port of power source of main control chip keeps low level.When master control core
When piece detects that induced voltage occurs in the coil of NFC interface, main control chip controls the output port of power source output high level, from
And make electric on SE.
Further, in a preferred embodiment, in order to the inspection that main control chip is merchandised to NFC is better achieved
Survey and the power supply control to SE chips, in NFC antenna (induction coil of i.e. previously described NFC interface) addition of one penetrates
Frequency field circuit for detecting.When circuit for detecting find come into radiofrequency field, to main control chip provide first signal, main control chip
After judging first signal to be effective, power supply output is provided from main control chip to SE chips.When circuit for detecting find from
Radiofrequency field is opened, then a secondary signal is provided to main control chip, main control chip keeps the power supply output to SE chips, and continues to tie up
After holding a period of time, then disconnect the externally fed to SE chips.
Data guard method in the present invention is also suitable for the situation that SE is operated under contact condition.
In one embodiment, the intellective IC card has contact communication interface (such as the USB of contact, audio etc.
Communication interface) and connected by contact communication interface with card reader (or read write line) and exchange data, the data protection side
Method comprises the following steps：
Step 10：Electricity on main control chip control SE.Detect intellective IC card contact communication interface whether with corresponding reading
Card device (or read write line) is connected, and when detecting the two connection, main control chip is powered to SE.COS systems start work after the upper electricity of SE
Make.
Step 20：COS systems receive instruction.
Step 30：COS system execute instructions.
Step 40：Judge whether that needs update the data, if it is, step 50 is performed, if not, directly performing step 60.
Step 50：New data is organized and is buffered in internal memory in internal memory, waits solidification memory block to be written.Pay attention to,
In this step, new data is not written into solidification memory and backed up.After step 50 terminates, step 60 is continued executing with.
Step 60：Organize the data returned.
Step 70：Judge whether also other instructions, if it is, return to step 20, if not, performing step 80.
Step 80：Assert closing the transaction, by internal memory all new data write-in solidification memory block (such as EEPROM or
Flash in).
Step 90：Main control chip controls SE delay cut-offs.Detect intellective IC card contact communication interface whether with it is corresponding
Card reader (or read write line) disconnect, when detecting that the two is disconnected, main control chip starts timing (such as using fixed
When device timing), when timing reaches time threshold, main control chip disconnects the power supply to SE.This is used for the time of delay cut-off
Threshold value can be set according to the maximum of the time of erasable data on EEPROM or Flash.
In addition, in another embodiment, the intellective IC card is also possible to use other contactless logical beyond NFC interface
Communication interface (such as light, ultrasound) couples with corresponding card reader and exchanges data.Under this situation, in the step 10, pass through
Whether the light or supersonic communication interface for detecting intellective IC card couple to determine main control chip with corresponding card reader (or read write line)
Whether powered to SE.In step 90, by detect intellective IC card light or supersonic communication interface whether with corresponding card reader
(or read write line) departs from coupling to determine whether start-up study powers off main control chip.
The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention.It is any
Those skilled in the art, equivalent variations, modification and the combination made on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention all should be belonged to.
Claims (9)
1. a kind of data guard method of intellective IC card, the intellective IC card includes battery, main control chip, security module and communication
Interface module, the data guard method comprise the following steps：
1) when detecting with corresponding card reader or read write line coupling, main control chip provides to security module comes from battery
Electric energy, make electricity in security module and start card operation system；
2) new data caused by transaction is buffered in the internal memory of security module by card operation system, will be described interior after end to be transacted
Cached new data is deposited disposably, to be uniformly written in the solidification memory block of security module；
3) when detecting that communication interface departs from coupling with corresponding card reader or read write line, main control chip controls the safe mould
Block delay cut-off.
2. the data guard method of intellective IC card according to claim 1, it is characterised in that also include：Work as battery electric quantity
During less than default first gear threshold value, intellective IC card issues the user with low battery alarm；When battery electric quantity is less than default
During the second gear threshold value, main control chip forbids security module to work.
3. the data guard method of intellective IC card according to claim 1, it is characterised in that the communication interface module is extremely
Include NFC interface less, in the step 1), by detecting whether the induction electric energy of coil of NFC interface judges communication interface
Coupled with corresponding card reader or read write line.
4. the data guard method of intellective IC card according to claim 3, it is characterised in that the communication interface module is also
Including contact communication interface；In the step 1), when security module is operated under contact condition, led to by detecting contact
Communication interface whether connected with corresponding card reader or read write line judge communication interface whether with corresponding card reader or read write line
Coupling.
5. the data guard method of intellective IC card according to claim 1, it is characterised in that the step 2) includes following
Sub-step：
21) card operation system receives instruction；
22) card operation system execute instruction；
23) judge whether this transaction needs to update the data, if it is, step 24) is performed, if not, directly performing step
25)；
24) new data is organized in internal memory and be buffered in internal memory, wait solidification memory block to be written；Continue executing with step
25)；
25) data that tissue returns；
26) also other instructions are judged whether, if it is, return to step 21), if not, performing step 27)；
27) assert closing the transaction, all new data in internal memory disposably, is uniformly write in solidification memory block.
6. the data guard method of intellective IC card according to claim 1, it is characterised in that the step 3) includes following
Sub-step：
31) detect whether communication interface couples with corresponding card reader or read write line disconnection, when being judged as YES, main control chip is opened
Beginning timing；
32) when timing reaches preset time threshold, main control chip powers off to security module.
7. the data guard method of intellective IC card according to claim 1, it is characterised in that the main control chip include with
The output port of power source of the power input port connection of security module, the output port of power source, which be able to can export, meets security module
The high level of operating voltage requirement；
In the step 1), when main control chip is not detected by communication interface and coupled with corresponding card reader or read write line, master control
The output port of power source of chip keeps low level；When main control chip detects communication interface and corresponding card reader or read write line coupling
During conjunction, main control chip controls output port of power source output high level, so that electricity and starting card operation in security module and being
System.
8. the data guard method of intellective IC card according to claim 7, it is characterised in that also include：Shield NFC sensings
Electric card operation system Starting mode in voltage triggered security module.
9. the data guard method of intellective IC card according to claim 2, it is characterised in that the low battery alarm is logical
The alarm for the one or more modes crossed in screen, vibration, sound, bluetooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778332.6A CN107729972B (en) | 2017-09-01 | 2017-09-01 | Data protection method for intelligent IC card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778332.6A CN107729972B (en) | 2017-09-01 | 2017-09-01 | Data protection method for intelligent IC card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107729972A true CN107729972A (en) | 2018-02-23 |
| CN107729972B CN107729972B (en) | 2020-09-08 |
Family
ID=61204921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710778332.6A Active CN107729972B (en) | 2017-09-01 | 2017-09-01 | Data protection method for intelligent IC card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107729972B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108647154A (en) * | 2018-05-14 | 2018-10-12 | 国网山东省电力公司阳谷县供电公司 | A method of carrying out parameter modification in concentrator |
| CN109741050A (en) * | 2018-12-28 | 2019-05-10 | 交通银行股份有限公司 | Extend method of financial IC card service life and associated method and device |
| CN111967281A (en) * | 2020-07-09 | 2020-11-20 | 深圳市金溢科技股份有限公司 | CPC card and power management method thereof |
| CN112181728A (en) * | 2020-09-29 | 2021-01-05 | 山东华翼微电子技术股份有限公司 | High-security CPU smart card chip data power-down prevention processing method |
| CN112904129A (en) * | 2021-01-27 | 2021-06-04 | 深圳市汇顶科技股份有限公司 | Test equipment and test method for anti-pulling function |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321341A (en) * | 2008-07-11 | 2008-12-10 | 东信和平智能卡股份有限公司 | Smart card power-off protection method |
| CN101561950A (en) * | 2009-05-21 | 2009-10-21 | 北京握奇数据系统有限公司 | Method and device for processing data of intelligent card |
| US20100030984A1 (en) * | 2008-08-01 | 2010-02-04 | Disney Enterprises, Inc. | Method and system for optimizing data backup |
| CN101656106A (en) * | 2009-08-27 | 2010-02-24 | 北京握奇数据系统有限公司 | Method for writing data into EEPROM and device thereof |
| CN102135921A (en) * | 2011-02-16 | 2011-07-27 | 无锡盖亚科技有限公司 | Protective circuit, protective method and software realizing method for portable terminal low-power system protection |
| CN102508723A (en) * | 2011-09-28 | 2012-06-20 | 山东神思电子技术股份有限公司 | Power-failure protection method orientated to IC (Integrated Circuit) card |
| CN102567146A (en) * | 2011-12-29 | 2012-07-11 | 北京握奇数据系统有限公司 | Log backup method and device and smart card |
| CN106093659A (en) * | 2016-07-22 | 2016-11-09 | 工业和信息化部电子工业标准化研究院 | Smart card power-off protection test device, system and method |
| CN106227680A (en) * | 2016-07-26 | 2016-12-14 | 成都三零嘉微电子有限公司 | A kind of data process and power fail preventing data guard method |
-
2017
- 2017-09-01 CN CN201710778332.6A patent/CN107729972B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321341A (en) * | 2008-07-11 | 2008-12-10 | 东信和平智能卡股份有限公司 | Smart card power-off protection method |
| US20100030984A1 (en) * | 2008-08-01 | 2010-02-04 | Disney Enterprises, Inc. | Method and system for optimizing data backup |
| CN101561950A (en) * | 2009-05-21 | 2009-10-21 | 北京握奇数据系统有限公司 | Method and device for processing data of intelligent card |
| CN101656106A (en) * | 2009-08-27 | 2010-02-24 | 北京握奇数据系统有限公司 | Method for writing data into EEPROM and device thereof |
| CN102135921A (en) * | 2011-02-16 | 2011-07-27 | 无锡盖亚科技有限公司 | Protective circuit, protective method and software realizing method for portable terminal low-power system protection |
| CN102508723A (en) * | 2011-09-28 | 2012-06-20 | 山东神思电子技术股份有限公司 | Power-failure protection method orientated to IC (Integrated Circuit) card |
| CN102567146A (en) * | 2011-12-29 | 2012-07-11 | 北京握奇数据系统有限公司 | Log backup method and device and smart card |
| CN106093659A (en) * | 2016-07-22 | 2016-11-09 | 工业和信息化部电子工业标准化研究院 | Smart card power-off protection test device, system and method |
| CN106227680A (en) * | 2016-07-26 | 2016-12-14 | 成都三零嘉微电子有限公司 | A kind of data process and power fail preventing data guard method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108647154A (en) * | 2018-05-14 | 2018-10-12 | 国网山东省电力公司阳谷县供电公司 | A method of carrying out parameter modification in concentrator |
| CN109741050A (en) * | 2018-12-28 | 2019-05-10 | 交通银行股份有限公司 | Extend method of financial IC card service life and associated method and device |
| CN111967281A (en) * | 2020-07-09 | 2020-11-20 | 深圳市金溢科技股份有限公司 | CPC card and power management method thereof |
| CN112181728A (en) * | 2020-09-29 | 2021-01-05 | 山东华翼微电子技术股份有限公司 | High-security CPU smart card chip data power-down prevention processing method |
| CN112181728B (en) * | 2020-09-29 | 2022-07-22 | 山东华翼微电子技术股份有限公司 | High-security CPU smart card chip data power-down prevention processing method |
| CN112904129A (en) * | 2021-01-27 | 2021-06-04 | 深圳市汇顶科技股份有限公司 | Test equipment and test method for anti-pulling function |
| CN112904129B (en) * | 2021-01-27 | 2022-09-27 | 深圳市汇顶科技股份有限公司 | Test equipment and test method for anti-pulling function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107729972B (en) | 2020-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107729972A (en) | A kind of data guard method of intellective IC card | |
| CN204559175U (en) | A kind of electric automobile charging pile intelligent monitoring and controlling device | |
| JP5341964B2 (en) | Fully simultaneous information about state changes of dual interface objects | |
| CN106356925A (en) | Mobile terminal, and charge control device and method thereof | |
| CN102934130B (en) | Load the miniature SD device of smart card | |
| CN107678532A (en) | A kind of low-power dissipation SOC wake module and low-power dissipation SOC | |
| CN103208845A (en) | Intelligent charging management terminal and implementation method for same | |
| CN103914123B (en) | Computer device and power management method thereof | |
| CN108038532B (en) | Intelligent card and control method thereof | |
| CN102347626B (en) | Power supply control device and method as well as mobile device using same | |
| CN107273756A (en) | Security information protector in F2F decoding chips | |
| CN101369318A (en) | Energy-saving operation method for multi-interface card and control circuit thereof | |
| CN106684985A (en) | Wireless charge control method and wireless charge device | |
| CN205666633U (en) | Mobile terminal | |
| CN107612162A (en) | A kind of wireless charging method, terminal and computer-readable recording medium | |
| CN105279855A (en) | Intelligent gas meter with NFC radio frequency CPU card | |
| CN110109529A (en) | SD card method for controlling power supply, device, storage medium and electronic equipment | |
| CN116061850A (en) | Vehicle control method and device, vehicle and storage medium | |
| CN103377392B (en) | Power supply module, method for filtering out surge current, and intelligent card | |
| CN101221547A (en) | Memory card having multiple interfaces, reset control method thereof, and reset control system | |
| CN204992155U (en) | Storage battery car charging control socket | |
| CN103166305B (en) | A kind of power control system and its implementation and smart card | |
| CN103412531B (en) | A kind of bus control method and device | |
| CN208367741U (en) | A kind of vehicle-mounted consumption terminal device of IC card with recognition function | |
| US7359695B2 (en) | Circuit for a data carrier, which circuit can be switched from an energy-saving processing mode to a normal-consumption processing mode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 330096 torch Street 399, Qingshan Lake District, Jiangxi, Nanchang Applicant after: Jiede (China) Technology Co.,Ltd. Address before: 330096 torch Street 399, Qingshan Lake District, Jiangxi, Nanchang Applicant before: Jiede (China) Information Technology Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |