CN104218690A - Visual card power management device and method - Google Patents
Visual card power management device and method Download PDFInfo
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- CN104218690A CN104218690A CN201410455643.5A CN201410455643A CN104218690A CN 104218690 A CN104218690 A CN 104218690A CN 201410455643 A CN201410455643 A CN 201410455643A CN 104218690 A CN104218690 A CN 104218690A
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- interface card
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Abstract
The invention relates to a visual card power management device and method. A visual card comprises a dual-interface card chip, a display chip, a coil and a battery, electric energy generated by the coil is sent to the dual-interface card chip, the visual card power management device comprises power output pins and a power management circuit, the power output pins arranged on the dual-interface card chip are used for outputting electric energy under control of the dual-interface card chip, and the power management circuit is used for selecting the power output pins or the battery to supply power to the display chip according to power supply of the power output pins. By the device and method, normal operation of the dual-interface card chip can be guaranteed, and meanwhile electric energy is distributed to the display chip dynamically.
Description
Technical field
The present invention relates to field of intelligent cards, relate in particular to a kind of visible card electric power controller and method.
Background technology
In the company standard Q/CUP 047.8-2013 of Unionpay, visible card specification has been proposed, code requirement visible card is double-interface card, has Presentation Function, can have internal battery.As shown in Figure 1, be the functional schematic of visible card in prior art, visible card comprises two modules: double-interface card module and display module.Inner structure is as follows: as shown in Figure 2, be the physical structure schematic diagram of visible card inside, wherein, between double-interface card chip and display chip, be connected by interface standard.
The supply power mode of visible card is as follows: as shown in Figure 3, for the circuit diagram of visible card inside in prior art, in non-contact application, mobile phone or card reader are sent carrier wave, for example: the carrier wave of 13.56MHz, the double-interface card chip of visible card inside obtains electric energy from carrier wave by coil, carry out work; Display chip uses powered battery.In this technical scheme, display chip can only use battery, if running down of battery, the Presentation Function of visible card cannot use completely.In addition, if there is no mobile phone or card reader, display chip makes the battery-powered while, if desired double-interface card chip operation, double-interface card chip also can only use powered battery, and now, display chip obtains electric energy by internal circuit control double-interface card chip from battery.In this case, the function of display chip and double-interface card chip all will be subject to the impact of battery electric quantity.
As shown in Figure 4, for the another kind of circuit diagram of visible card inside in prior art, this circuit comprises two coils, and coil 1 is for power supply, and coil 2 is for communication and power supply, and add a rectification circuit, the electric energy obtaining from coil 1 is directly supplied with display chip by rectification circuit, and therefore, display chip can obtain electric energy from battery, also can directly obtain electric energy from coil 1, and not be subject to the impact of double-interface card chip.If carry out work but display chip directly obtains electric energy from coil 1, can cause the electricity shortage of double-interface card chip, this is because in arbitrary electromagnetic field, arbitrary position, the electric energy that visible card obtains from coil is fixed, if display chip directly obtains electric energy from coil 1, double-interface card chip can with electric energy just have to reduce, so such occupation mode tends to have a strong impact on the normal work of double-interface card chip.
Summary of the invention
The invention provides a kind of visible card electric power controller and method, in order to realize in ensureing the normal work of double-interface card chip, dynamically for display chip distributes electric energy.
The invention provides a kind of visible card electric power controller, described visible card comprises double-interface card chip, display chip, coil and battery, and the electric energy that described coil produces sends to described double-interface card chip, and described device comprises:
Power supply output pin, is arranged on described double-interface card chip, for exporting electric energy under the control at described double-interface card chip;
Electric power management circuit, for according to the electric power thus supplied of described power supply output pin, selecting described power supply output pin or described battery is described display chip power supply.
The present invention also provides a kind of visible card, comprises display chip, double-interface card chip, coil and battery, also comprises aforesaid visible card electric power controller.
The present invention also provides a kind of visible card method for managing power supply, and described visible card comprises double-interface card chip, display chip, coil and battery, and described method comprises:
The electric energy that described coil produces sends to described double-interface card chip;
Described double-interface card chip controls power supply output pin output electric energy;
According to the electric power thus supplied of described power supply output pin, selecting described power supply output pin or described battery is described display chip power supply.
The present invention adopts double-interface card chip controls power supply output pin output electric energy, ensures that double-interface card chip obtains sufficient electric energy; Meanwhile, electric power management circuit selects power supply output pin or battery to power to display chip by judging the voltage of power supply output pin, and display chip can cannot not be used because of running down of battery, also can not cause double-interface card chip power supply deficiency.Therefore, realize dynamic assignment double-interface card chip and display chip required electric energy separately, and then realized the normal use of visible card various functions.
Brief description of the drawings
Fig. 1 is the functional schematic of visible card in prior art;
Fig. 2 is the physical structure schematic diagram of visible card inside;
Fig. 3 is the circuit diagram of visible card inside in prior art;
Fig. 4 is the another kind of circuit diagram of visible card inside in prior art;
Fig. 5 is the structural representation of visible card electric power controller embodiment of the present invention;
Fig. 6 is the schematic flow sheet of visible card method for managing power supply embodiment of the present invention.
Embodiment
Below in conjunction with specification drawings and specific embodiments, the invention will be further described.
As shown in Figure 5, for the structural representation of visible card electric power controller embodiment of the present invention, this device comprises: coil 51, double-interface card chip 52, power supply output pin 53, electric power management circuit 54, battery 55, display chip 56, double-interface card chip 52 is connected with coil 52, power supply output pin 53 is arranged on double-interface card chip 52, electric power management circuit 54 is connected with power supply output pin 53, battery 55 is connected with electric power management circuit 54, and display chip 56 is connected with electric power management circuit 54.
In the present embodiment, the electric energy that coil 51 produces sends to double-interface card chip 52; Power supply output pin 53 is for exporting electric energy under the control at double-interface card chip 52; Electric power management circuit 54, for according to the electric power thus supplied of power supply output pin 53, selects power supply output pin 53 or battery 55 to power for display chip 56.
The specific works process of the present embodiment is as follows: as shown in Figure 6, for the schematic flow sheet of visible card method for managing power supply embodiment of the present invention, specifically can comprise the steps:
The electric energy that step 61, coil 51 produce sends to two interface chips 52;
Step 62, double-interface card chip 52 are controlled power supply output pin 53 and are exported electric energy;
Step 63, electric power management circuit 54, according to the electric power thus supplied of power supply output pin 53, select power supply output pin 53 or battery 55 to power for display chip 56.
In the present embodiment, coil 51 produces electric energy and sends to double-interface card chip 52, double-interface card chip 52 is controlled the electric energy that power supply output pin 53 is exported, like this, the electric energy that coil 51 produces is preferentially supplied with double-interface card chip 52, unnecessary electric energy goes by 53 outputs of power supply output pin, avoid display chip 56 directly after coil 51 obtains electric energy, to cause the situation of double-interface card chip 52 electricity shortages to occur, therefore, no longer occur that display chip in visible card 56 and double-interface card chip 52 fight for the situation of electric energy, guarantee the normal work of double-interface card chip 52.It is that display chip 56 is powered that electric power management circuit 54 is selected one of them according to power supply output pin 53 and battery 55 electric power thus supplied separately, has avoided 56 of display chips to use the situation of batteries 55, has realized dynamically and has distributed electric energy for display chip 56.
Alternatively, in the present embodiment, electric power management circuit 54, for the voltage of power supply output pin 53 or electric current and the first predetermined threshold are compared, selects power supply output pin 53 or battery 55 to power for display chip 56 according to comparative result.For example: in the time that the voltage of power supply output pin 53 or electric current are greater than the first predetermined threshold, electric power management circuit 54 can select power supply output pin 53 to power for display chip 56; In the time that the voltage of power supply output pin 53 or electric current are less than or equal to the first predetermined threshold, electric power management circuit 54 can select battery 55 to power for display chip 56.
Alternatively, in the present embodiment, double-interface card chip 52 can be according to double-interface card chip 52 conditions of demand to electric energy, control the electric energy that power supply output pin 53 is exported.In the time that the electric energy of double-interface card chip 52 self-demands is larger, can reduce the electric energy that power supply output pin 53 is exported; When the electric energy of double-interface card chip 52 self-demands hour, can increase the electric energy that power supply output pin 53 is exported.For example: in the time that double-interface card chip 52 needs high-current consumption, can reduce the electric current that power supply output pin 53 is exported; In the time that double-interface card chip 52 does not need high-current consumption, can increase the electric current that power supply output pin 53 is exported.
Alternatively, in the present embodiment, battery 55 can be rechargeable battery, and electric power management circuit 54 can also be according to the electric power thus supplied of power supply output pin 53, for battery 55 charges, to make full use of the electric energy that coil produces.For example: electric power management circuit 54 compares the voltage of power supply output pin 53 or electric current and the second predetermined threshold, determine whether to charge for battery 55 by power supply output pin 53 according to comparative result, when voltage or the electric current of power supply output pin 53 fully high, for example: while being greater than the second predetermined threshold, electric power management circuit 54 is definite to charge for battery 55 by power supply output pin 53.
The present invention also provides a kind of embodiment of visible card, this visible card can comprise double-interface card chip 52, display chip 56, coil 51 and battery 55, can also comprise power supply output pin 53 and electric power management circuit 54 in above-mentioned visible card electric power controller embodiment, not repeat them here.
Finally it should be noted that: above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not depart from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a visible card electric power controller, is characterized in that, described visible card comprises double-interface card chip, display chip, coil and battery, and the electric energy that described coil produces sends to described double-interface card chip, and described device comprises:
Power supply output pin, is arranged on described double-interface card chip, for exporting electric energy under the control at described double-interface card chip;
Electric power management circuit, for according to the electric power thus supplied of described power supply output pin, selecting described power supply output pin or described battery is described display chip power supply.
2. device according to claim 1, it is characterized in that, described electric power management circuit is for the voltage of described power supply output pin or electric current and the first predetermined threshold are compared, and selecting described power supply output pin or described battery according to comparative result is that described display chip is powered.
3. device according to claim 1, is characterized in that, described double-interface card chip is the conditions of demand to electric energy according to described double-interface card chip, controls the electric energy of described power supply output pin output.
4. device according to claim 1, is characterized in that, described battery is rechargeable battery, and described electric power management circuit, for according to the electric power thus supplied of described power supply output pin, is also described battery charging.
5. device according to claim 4, it is characterized in that, described electric power management circuit, also for the voltage of described power supply output pin or electric current and the second predetermined threshold are compared, determines whether that according to comparative result by described power supply output pin be described battery charging.
6. a visible card, comprises display chip, double-interface card chip, coil and battery, it is characterized in that, also comprises the arbitrary described visible card electric power controller of claim 1-5.
7. a visible card method for managing power supply, is characterized in that, described visible card comprises double-interface card chip, display chip, coil and battery, and described method comprises:
The electric energy that described coil produces sends to described double-interface card chip;
Described double-interface card chip controls power supply output pin output electric energy;
According to the electric power thus supplied of described power supply output pin, selecting described power supply output pin or described battery is described display chip power supply.
8. method according to claim 7, is characterized in that, the described power supply output pin of described selection or described battery are that described display chip power supply is specially:
The voltage of described power supply output pin or electric current and the first predetermined threshold are compared, and selecting described power supply output pin or described battery according to comparative result is described display chip power supply.
9. method according to claim 7, is characterized in that, also comprises:
Described double-interface card chip is the conditions of demand to electric energy according to described double-interface card chip, control the electric energy of described power supply output pin output.
10. method according to claim 7, is characterized in that, described battery is rechargeable battery, and described method also comprises:
According to the electric power thus supplied of described power supply output pin, it is described battery charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455643.5A CN104218690A (en) | 2014-09-09 | 2014-09-09 | Visual card power management device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455643.5A CN104218690A (en) | 2014-09-09 | 2014-09-09 | Visual card power management device and method |
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| CN104218690A true CN104218690A (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410455643.5A Pending CN104218690A (en) | 2014-09-09 | 2014-09-09 | Visual card power management device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196528A1 (en) * | 2017-04-25 | 2018-11-01 | 飞天诚信科技股份有限公司 | Visual card and working method therefor |
| CN112383132A (en) * | 2020-11-02 | 2021-02-19 | 江苏亨通金服数字科技有限公司 | Double-source visual card |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201302726Y (en) * | 2008-11-20 | 2009-09-02 | 北京握奇数据***有限公司 | A dual-interface smart card |
| CN102075598A (en) * | 2011-01-11 | 2011-05-25 | 中兴通讯股份有限公司 | Mobile payment terminal |
| CN204118864U (en) * | 2014-09-09 | 2015-01-21 | 昆腾微电子股份有限公司 | Visible card, visible card electric power controller |
-
2014
- 2014-09-09 CN CN201410455643.5A patent/CN104218690A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201302726Y (en) * | 2008-11-20 | 2009-09-02 | 北京握奇数据***有限公司 | A dual-interface smart card |
| CN102075598A (en) * | 2011-01-11 | 2011-05-25 | 中兴通讯股份有限公司 | Mobile payment terminal |
| CN204118864U (en) * | 2014-09-09 | 2015-01-21 | 昆腾微电子股份有限公司 | Visible card, visible card electric power controller |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196528A1 (en) * | 2017-04-25 | 2018-11-01 | 飞天诚信科技股份有限公司 | Visual card and working method therefor |
| US11120321B2 (en) | 2017-04-25 | 2021-09-14 | Feitian Technologies Co., Ltd. | Visual card and operating method for same |
| CN112383132A (en) * | 2020-11-02 | 2021-02-19 | 江苏亨通金服数字科技有限公司 | Double-source visual card |
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