CN108038532B - Intelligent card and control method thereof - Google Patents
Intelligent card and control method thereof Download PDFInfo
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- CN108038532B CN108038532B CN201711291822.XA CN201711291822A CN108038532B CN 108038532 B CN108038532 B CN 108038532B CN 201711291822 A CN201711291822 A CN 201711291822A CN 108038532 B CN108038532 B CN 108038532B
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- 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
- G06K19/0701—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 at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0702—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 at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery
- G06K19/0704—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 at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery the battery being rechargeable, e.g. solar batteries
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- 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
- G06K19/0723—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 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
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- Computer Networks & Wireless Communication (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides a smart card control method, which is used for solving the problem that the operation of adding a Bluetooth function on a smart card is complex in the prior art. The intelligent card comprises a Bluetooth circuit and an IC chip, and is characterized in that the working process of the Bluetooth circuit comprises the following steps: receiving an access signal: judging the type of the access signal; controlling the smart card to work according to the type of the access signal; the access signal type comprises a key starting signal, a card reading signal of external card reading equipment or a charging signal. This application easy operation has improved the transformation efficiency of smart card.
Description
Technical Field
The invention relates to the technical field of smart cards, in particular to a smart card and a control method thereof.
Background
At present, due to the convenience brought by the internet, a plurality of financial transactions are completed on a mobile terminal, but with the safety problem brought by the convenience, the financial transactions still need to be based on hardware equipment, such as financial IC cards, meanwhile, the Bluetooth communication technology is generally used on the mobile terminal equipment, and additionally, based on the convenience of Bluetooth communication, some intelligent cards with Bluetooth communication functions are proposed in succession, and the intelligent cards are provided with Bluetooth communication modules, so that the Bluetooth communication modules can be used for communicating with external Bluetooth equipment, and the non-contact communication of the intelligent cards is realized.
However, in order to add a bluetooth communication module to the smart card, the connection and layout of the internal devices of the original contact smart card and the dual-interface smart card are often changed, so that the internal structure of the smart card is complex, and the difficulty in modifying the smart card is increased.
Disclosure of Invention
The application provides a smart card and a control method thereof, which are used for solving the problem that the addition of a Bluetooth function on the existing double-interface IC card or contact type IC card is complicated.
According to an aspect of the present application, there is provided a smart card control method, wherein a smart card includes a bluetooth Circuit and an IC (Integrated Circuit) chip, wherein a bluetooth Circuit operation process includes the steps of: receiving an access signal: judging the type of the access signal; controlling the smart card to work according to the type of the access signal; the access signal type comprises a key starting signal, a card reading signal of external card reading equipment or a charging signal.
When the type of the access signal is a starting signal, the specific substep of controlling the smart card to work according to the type of the access signal is as follows:
s1: carrying out Bluetooth broadcast, waiting for connection with an external device, if the connection is successful, turning to the step S2, and if the connection is overtime, turning to the step S4;
s2: successfully connecting with external equipment, waiting for information interaction operation of a user, and turning to the step S3, and if no operation exists for a period of time, turning to the step S4;
s3: the external device performs data interaction with the IC chip through the Bluetooth antenna of the Bluetooth circuit and the 7816 interface of the Bluetooth circuit, and if the user does not operate for a period of time, the step goes to step S4;
s4: and (5) shutting down.
The access signal type is a card reading signal of an external card reading device, and the Bluetooth circuit is automatically powered off;
and if the type of the access signal is a charger signal, starting a charging process, and checking whether the access signal is full or not and whether the user terminates charging or not in the charging process.
Optionally, the smart card further includes an NFC (Near Field Communication) antenna embedded in the card base, the NFC antenna is connected to the IC chip, wherein:
when the NFC antenna receives an NFC signal, the IC chip judges whether processing data sent by the Bluetooth circuit is being processed or not;
if the processing data sent by the Bluetooth circuit is being processed, selecting a processing sequence according to a preset rule or the selection of a user;
otherwise, processing the data received by the NFC antenna.
Optionally, the IC chip is a contact IC chip, the bluetooth master control module of the bluetooth circuit includes an NFC processing unit, the antenna of the bluetooth circuit receives the wireless signal, and when the bluetooth circuit determines that the access signal type is an NFC signal, the IC chip performs non-contact data interaction with the outside through the NFC processing unit of the bluetooth circuit.
Optionally, according to the type of the access signal and the application scenario, the IC chip or the bluetooth master control module sets the priority of the smart card operating mode, where the operating mode includes: the mobile phone comprises a Bluetooth interaction mode, an NFC interaction mode, a direct-insertion external card reading device mode, a wireless charging mode and a card slot charging mode.
According to another aspect of the present application, there is provided a smart card, comprising:
IC card chip and blue tooth circuit;
the bluetooth circuit includes: the Bluetooth system comprises a Bluetooth main control module, a Bluetooth antenna, a charging circuit and a rechargeable battery, wherein the rechargeable battery supplies power to the Bluetooth circuit;
wherein the Bluetooth circuit is connected with the IC card contact of the IC card chip.
Optionally, the mobile phone further comprises an NFC antenna and a wireless charging antenna, wherein the IC card chip is a dual-interface IC card, the NFC antenna is connected with the security processing module of the IC card chip, and the wireless charging antenna is connected with the charging circuit.
Optionally, the IC card chip is a contact IC chip, the bluetooth circuit further includes an NFC processing unit, the NFC processing unit is integrated in the bluetooth host control module, and in different application scenarios, the bluetooth antenna is used as an NFC antenna or a wireless charging antenna under the control of the bluetooth host control.
Optionally, the charging circuit is further configured to:
in the process of charging the rechargeable battery, outputting a power supply state of the rechargeable battery to the Bluetooth master control module, wherein the power supply state at least comprises one of the following states:
uncharged, charging in progress, charging completed, and charging failure.
The invention has the following technical effects:
1: the existing smart card can be modified through simple steps, so that the smart card has a Bluetooth function.
2: multiplexing antenna sets up NFC antenna, bluetooth antenna and wireless charging antenna to an antenna, plays the effect that an antenna replaces three antennas, has avoided the problem of original three antennas mutual interference, has saved the position that the antenna in the card base took, improves system card efficiency for the technology degree of difficulty descends.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a flow chart of a smart card control method of the present invention;
FIG. 2 is a flow chart of another smartcard control method of the present invention;
FIG. 3 is a flow chart of another smartcard control method of the present invention;
FIG. 4 is a diagram of the hardware logic of the smart card;
FIG. 5 is a block diagram of a smart card of an embodiment of the present invention;
FIG. 6 is a block diagram of another smart card of an embodiment of the present invention;
fig. 7 is a bluetooth master module integrated with an NFC processing unit.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the present embodiment provides a method for controlling a smart card, and as shown in fig. 1, the smart card includes a bluetooth circuit and an IC chip, where the bluetooth circuit includes the following steps:
step 11: a Bluetooth master control module of the Bluetooth circuit receives an access signal;
step 12: judging the type of the access signal;
the access signal type comprises a key starting signal, a card reading signal or a charging signal of external card reading equipment, and the Bluetooth circuit judges the type of the access signal;
step 13: according to the type of the accessed signal, the Bluetooth circuit controls the work of the intelligent card, and the method comprises the following processing steps:
controlling the smart card to work according to the type of the access signal, wherein the type of the access signal comprises a key starting signal, a card reading signal of an external card reading device or a charging signal, and the control processes are respectively as follows:
if the access signal is a key power-on signal: the key starting signal is generated by pressing a key switch on the smart card by a user, once the signal is received, the Bluetooth circuit is in a working state and starts to be connected with external equipment, so that the IC card chip receives and/or sends data through the Bluetooth antenna;
if the access signal is an external device card reading signal: the external card reading equipment can contact with a contact of the IC chip, and the Bluetooth circuit is connected with the IC chip in the card, so that the Bluetooth circuit can obtain power supply of the IC chip, the Bluetooth circuit is started, the Bluetooth circuit can also detect an external card reading equipment signal on the IC chip, and the external card reading equipment is known to read and write the IC chip in the card. In this state, the bluetooth master control unit in the bluetooth circuit can turn off the power, so that the bluetooth circuit is in a non-working state.
Charging signals: if the signal is a charging signal, the Bluetooth circuit controls the charging circuit to perform corresponding processing.
Example 2:
the embodiment also provides another smart card control method, fig. 2 is a flowchart of the method, and as shown in fig. 2, the method includes the following processes:
step 401: detecting whether the Bluetooth circuit is started based on key operation, if so, executing step 403, and if not, executing step 420, and turning off the Bluetooth circuit;
step 403: the Bluetooth circuit performs Bluetooth broadcasting;
after step 403 is performed, step 406 is performed: judging whether the Bluetooth connection is successful, if so, executing step 407: determining whether there is a financial transaction operation, if the connection fails, executing step 408: performing connection timing; after the step 408 is executed, the step 409 is executed: and judging whether the connection timing is overtime or not, if so, closing the Bluetooth circuit, and if not, returning to the step 403.
After step 407, if there is a financial transaction, then 418: and carrying out financial transaction and timing zero clearing, and if no financial transaction exists, continuing timing.
Step 416: judging whether the operation of a shutdown key is detected, if so, executing step 420 to control the Bluetooth circuit to be shut down, and if not, executing step 417: and judging whether the smart card keeps Bluetooth connection, if so, returning to the step 407, otherwise, returning to the step 403.
The operations involved in the above steps are further explained below.
The Bluetooth circuit is started due to the fact that a user operates a key, and then the Bluetooth circuit works and enters a Bluetooth broadcasting state. The time of bluetooth broadcast is limited, if outside bluetooth equipment can not in time establish the bluetooth with the smart card and be connected, after the bluetooth broadcast number of times accumulational overtime, bluetooth circuit self-closing makes the bluetooth circuit inoperative to practice thrift battery power.
And if the smart card is successfully connected with the external Bluetooth equipment, waiting for the user to perform financial transaction operation, wherein the financial transaction operation is realized through an application program on the external Bluetooth equipment connected with the Bluetooth. And the transaction operation data of the external Bluetooth equipment is subjected to data interaction with the security chip of the intelligent card through the Bluetooth antenna and the Bluetooth master control 7816 interface by using a Bluetooth wireless data channel. In the process of financial transaction, if the user does not perform any operation within a period of time, the Bluetooth circuit is automatically closed and does not work any more, so as to save the battery power.
If the Bluetooth connection is interrupted in the use process of the intelligent card, the Bluetooth circuit enters the broadcasting state again and waits for the reconnection of the external Bluetooth equipment.
The intelligent card of this application embodiment is through the mode that increases bluetooth circuit on original IC-card for bluetooth circuit is direct to link to each other with the IC-card contact, directly increases bluetooth circuit on the basis of original IC-card, has comparatively conveniently realized the improvement of IC-card, also makes the functional partitioning of IC-card clearer simultaneously, has made things convenient for the control to each part circuit, has improved the reliability of product.
Example 3: the embodiment also provides another smart card control method, fig. 3 is a flowchart of the method, and as shown in fig. 3, the method includes the following processes:
step 401: detecting whether a Bluetooth circuit is started based on key operation, if so, executing step 403, and if not, executing step 402;
step 402: detecting whether the smart card is connected with a charger, if so, executing a step 404, and if not, controlling the Bluetooth circuit to be closed;
step 403: the Bluetooth circuit performs Bluetooth broadcasting; after step 403 is performed, step 406 is performed.
Step 404: checking the state of charge, if the battery is fully charged, turning off the bluetooth circuitry, if the battery is not fully charged, performing step 405: and judging whether the user stops charging, if so, closing the Bluetooth circuit, and if not, returning to the step 404.
Step 406: judging whether the Bluetooth connection is successful, if so, executing step 407: determining whether there is a financial transaction operation, if the connection fails, executing step 408: performing connection timing; after the step 408 is executed, the step 409 is executed: and judging whether the connection timing is overtime or not, if so, closing the Bluetooth circuit, and if not, returning to the step 403.
After step 407 is executed, if there is a financial transaction, the timing is cleared after the financial transaction is performed, and if there is no financial transaction, the timing is continued. If the idle time is out, performing shutdown operation; otherwise, go to step 410: the battery detects the amount of power.
After step 410 is executed, step 411 is executed: judging whether the battery power is insufficient, if so, indicating that the battery power is insufficient, and executing step 412: and informing the connecting equipment that the Bluetooth card is insufficient in electric quantity, and executing shutdown operation after the informing. If the determination result is negative, indicating that the battery power is sufficient, execute step 413: judging whether an external card reading device is inserted;
step 412: informing the external device that the Bluetooth circuit is insufficient in electric quantity;
step 413: judging whether an external card reading device is inserted, if so, closing the Bluetooth circuit, and if not, executing a step 414;
step 414: judging whether a charger is inserted, if so, executing step 415; if not, go to step 416;
step 415: checking the charging state;
step 416: judging whether the shutdown key operation is detected, if so, controlling the Bluetooth circuit to be closed, and if not, executing the step 417: and judging whether the smart card keeps Bluetooth connection, if so, returning to the step 407, otherwise, returning to the step 403.
The operations involved in the above steps are further explained below.
The Bluetooth circuit can start to work under the three conditions of accessing an external card reading device, accessing a charger or operating through a key. After the bluetooth circuit starts to work, the bluetooth card main control chip judges whether the current bluetooth circuit is opened or not due to the fact that the smart card is connected into an external card reading device through a signal of a 7816 interface, such as RST reset, CLK clock or I/O data, if so, the bluetooth card main control chip controls the bluetooth circuit to be automatically closed, the bluetooth circuit does not work, and at the moment, the smart card is equivalent to a common IC card.
The charging signal is set as a specific signal in advance, or in this embodiment, it is defined that the 7816 signal is not detected, and the button operation is not detected, which is the charging signal. And if the charging signal is detected, controlling the charging circuit to charge, and checking whether the charging circuit is full and whether the user terminates the charging in the charging process.
If the key operation is detected, namely the Bluetooth circuit is started due to the key operation of a user, the Bluetooth circuit works and enters a Bluetooth broadcasting state. The time of bluetooth broadcast is limited, if outside bluetooth equipment can not in time establish the bluetooth with the smart card and be connected, after the bluetooth broadcast number of times accumulational overtime, bluetooth circuit self-closing makes the bluetooth circuit inoperative to practice thrift battery power.
And if the smart card is successfully connected with the external Bluetooth equipment, waiting for the user to perform financial transaction operation, wherein the financial transaction operation is realized through an application program on the external Bluetooth equipment connected with the Bluetooth. And financial transaction operation data of the external Bluetooth device is subjected to data interaction with a security chip of the smart card through the Bluetooth antenna and the Bluetooth master control 7816 interface by using a Bluetooth wireless data channel. In the process of financial transaction, if the user does not perform any operation within a period of time, the Bluetooth circuit is automatically closed and does not work any more, so as to save the battery power.
In the use of smart card, bluetooth host system passes through power management circuit, can obtain the residual capacity of battery, if the residual capacity of battery is not enough, then notifies outside bluetooth equipment to self-closing bluetooth circuit makes bluetooth circuit no longer continue work.
The smart card is designed to be a preferential working mode of the external card reading equipment, the operation of inserting the smart card into the external card reading equipment in the working state of the Bluetooth circuit is a misoperation, and when the operation is detected, the Bluetooth circuit is closed, so that the Bluetooth circuit does not work any more.
In the use process of the smart card, the working mode of charging while using is supported. After the Bluetooth circuit is detected to start charging, the change of the charging state is detected.
If the Bluetooth connection is interrupted in the use process of the intelligent card, the Bluetooth circuit enters the broadcasting state again and waits for the reconnection of the external Bluetooth equipment.
The intelligent card of this application embodiment is through the mode that increases bluetooth circuit on original IC-card for bluetooth circuit is direct to link to each other with the IC-card contact, directly increases bluetooth circuit on the basis of original IC-card, has comparatively conveniently realized the improvement of IC-card, also makes the functional partitioning of IC-card clearer simultaneously, has made things convenient for the control to each part circuit, has improved the reliability of product.
Example 4:
the embodiment also provides a smart card, fig. 4 is a block diagram of the smart card, and as shown in fig. 4, the smart card includes the following components:
the bluetooth circuit includes: the Bluetooth module comprises a Bluetooth antenna 41, a Bluetooth master control module 42, a charging circuit 43 and a rechargeable battery 44, wherein the rechargeable battery 44 supplies power for the Bluetooth circuit; the IC card chip 45 includes contacts 4501; the bluetooth master control module 42 is connected to the IC card chip 45 through the contact 4501.
In the embodiment, a common contact type smart card, a non-contact type smart card or a double-interface smart card is simply transformed, a Bluetooth circuit is added, the transformation cost is low, and the effect is good. The security of the internet financial transaction is improved by utilizing the security advantage of the smart card.
Example 5:
the embodiment also provides a smart card, fig. 5 is a block diagram of the smart card, and as shown in fig. 5, the smart card includes the following components:
the card base 51 is provided with an NFC antenna 501, a double-interface IC card chip and a Bluetooth circuit.
The double-interface IC card chip comprises an IC chip 502 and an IC card contact 503; the bluetooth circuit comprises a wireless charging antenna 504, a charging circuit 505, a battery protection module 506, a charging battery 507, a power management module 508, a bluetooth main control module 509, a bluetooth antenna 510, a bluetooth circuit switch key 511 and an indicator lamp 512.
The bluetooth master control module 509 is configured to control the bluetooth circuit to be in a working state when detecting a bluetooth circuit activation signal, so that the IC card chip receives and/or transmits data through the bluetooth antenna 510; and when the Bluetooth circuit is triggered to be turned on by the smart card being connected into the external card reading device, the Bluetooth circuit is controlled to be turned off, so that the Bluetooth circuit is in a non-working state.
In the embodiment of the application, according to the ISO IEC7816 standard, the total number of the IC card contacts 503 is eight, and the functions are C1 and VCC respectively; c2, RST; c3, CLK; c4, idle; c5, GND; c6, SPU; c7, I/O; c8, idle. The charging interface of the charging circuit 505 of the Bluetooth circuit is connected with the IC card contacts C1(VCC) and C5(GND), so that the Bluetooth card can charge the rechargeable battery 507 in the smart card when inserted into the 7816 interface contact charger, and the contact charging voltage conforms to the A-class voltage standard in ISO IEC 7816. The charging interface of the charger may also use idle contacts C4 and C8 in the ISO IEC7816 standard, or other contacts (other contacts are implemented by using function multiplexing) as the output end of the power supply, and accordingly, the power supply end of the charging circuit 505 is also connected to the corresponding IC card contact 503.
The 7816 interface of the bluetooth master control module of the embodiment of the present application is directly connected to the financial IC card contacts C2, C3, C7, and the interface meets the time sequence and level requirements of the ISO IEC7816 standard, and is used for reading and writing the IC chip of the smart card.
As shown in fig. 5, the bluetooth circuit in this embodiment of the application further includes a wireless charging antenna 504, where the wireless charging antenna 504 is connected to a charging circuit 505, and is used to charge a rechargeable battery 507 through the charging circuit 505 when a wireless connection is established with an external wireless charging device, where the wireless charging employs an electromagnetic coupling manner to transfer energy.
As shown in fig. 5, the charging circuit 505 in this embodiment of the application is further configured to output a power supply state of the rechargeable battery 507 to the bluetooth master module in a process of charging the rechargeable battery 507, where the power supply state at least includes one of the following states: charging, charging in progress, charging completion, and charging failure; based on this, bluetooth card circuit of this application embodiment still includes: and the indicator lamp 512 is connected with the bluetooth main control module 509 and is used for prompting at least one charging state under the control of the bluetooth main control module 509 and prompting the communication state of the smart card, the insufficient electric quantity of the rechargeable battery 507, the bluetooth connection state and the financial transaction state.
As shown in fig. 5, the bluetooth circuit of the embodiment of the present application further includes: the switch key 511 generates a target instruction when the switch key 511 is triggered, where the target instruction is used to instruct to start the bluetooth circuit and confirm or cancel the currently detected operation of the bluetooth main control module, where the key may be a mechanical physical key or an inductive key, such as a capacitive inductive touch key or an infrared inductive key.
As shown in fig. 5, the bluetooth circuit of the embodiment of the present application further includes: the charging protection circuit 506, both ends of the charging protection circuit 506 are respectively connected with the charging circuit 505 and the rechargeable battery 507, and are used for cutting off the output path of the rechargeable battery 507 when any one of the abnormal conditions of overdischarge, overcharge and high temperature of the rechargeable battery 507 occurs.
As shown in fig. 5, the bluetooth circuit of the embodiment of the present application further includes: and the power management module 508, one end of the power management module 508 is connected with the bluetooth main control module 509, the other end is connected with the input end of the charging protection circuit 505, and the power management module 508 is used for outputting the voltage value and/or the working current of the battery to the bluetooth main control module 509 and switching on or off the power supply circuit of the battery under the control of the bluetooth main control module 509.
As shown in fig. 5, the bluetooth master control module of the bluetooth circuit of this embodiment configures the working modes of the smart card in different scenarios according to the user's circumstances or the preset settings, where the working modes are five modes, i.e., a bluetooth interaction mode, an NFC interaction mode, a wireless charging mode, a mode of directly inserting an external card reading device, and a card slot charging mode of charging through an IC card contact. The user can set the priorities of the five operating modes of the smart card and set whether one or several operating modes are simultaneously supported.
Example 6:
the embodiment also provides a smart card, fig. 6 is a block diagram of the smart card, and as shown in fig. 6, the smart card includes the following components:
the card base 51 is provided with a contact type IC card chip and a Bluetooth circuit.
The contact type IC card chip comprises an IC chip 502 and an IC card contact 503; the bluetooth circuit comprises an antenna 601, a charging circuit 505, a battery protection module 506, a rechargeable battery 507, a power management module 508, a bluetooth main control module 509, a bluetooth circuit switch key 511 and an indicator lamp 512.
The IC card contact 503 of the contact IC card chip is connected to the bluetooth main control module 509 of the bluetooth circuit.
A part of the logic structure of the bluetooth master module 509 can be shown in fig. 7, the bluetooth master module 509 integrates an NFC processing unit 5091 and a switch processing unit 5092, the NFC processing unit 5091 can process an NFC signal, and the antenna switch processing unit 5092 is connected to the antenna 601 shown in fig. 6 through an antenna connector 5093.
The bluetooth master module 509 controls the antenna switch processing unit 5092 to switch to one of the NFC interaction mode, the bluetooth interaction mode, and the wireless charging mode in different scenarios. The three modes are not available simultaneously, and the bluetooth host 509 may switch the antenna 601 to serve different modes at a priority level set by a user in advance or in advance.
In the NFC interaction mode, the IC chip may perform non-connection data interaction with the outside through the NFC processing unit of the bluetooth master module 509.
As shown in fig. 6, the bluetooth circuit in the embodiment of the present application further includes a charging circuit 505, configured to charge the rechargeable battery 507 through the charging circuit 505 when a wireless connection is established with an external wireless charging device, where the wireless charging employs an electromagnetic coupling manner to transmit energy.
As shown in fig. 6, the charging circuit 505 in this embodiment of the application is further configured to output a power supply state of the rechargeable battery 507 to the bluetooth master module in a process of charging the rechargeable battery 507, where the power supply state at least includes one of the following states: charging, charging in progress, charging completion, and charging failure; based on this, bluetooth card circuit of this application embodiment still includes: and the indicator lamp 512 is connected with the bluetooth main control module 509 and is used for prompting at least one charging state under the control of the bluetooth main control module 509 and prompting the communication state of the smart card, the insufficient electric quantity of the rechargeable battery 507, the bluetooth connection state and the financial transaction state.
As shown in fig. 6, the bluetooth circuit of the embodiment of the present application further includes: the switch key 511 generates a target instruction when the switch key 511 is triggered, where the target instruction is used to instruct to start the bluetooth circuit and confirm or cancel the currently detected operation of the bluetooth main control module, where the key may be a mechanical physical key or an inductive key, such as a capacitive inductive touch key or an infrared inductive key.
As shown in fig. 6, the bluetooth circuit of the embodiment of the present application further includes: the charging protection circuit 506, both ends of the charging protection circuit 506 are respectively connected with the charging circuit 505 and the rechargeable battery 507, and are used for cutting off the output path of the rechargeable battery 507 when any one of the abnormal conditions of overdischarge, overcharge and high temperature of the rechargeable battery 507 occurs.
As shown in fig. 6, the bluetooth circuit of the embodiment of the present application further includes: and the power management module 508, one end of the power management module 508 is connected with the bluetooth main control module 509, the other end is connected with the input end of the charging protection circuit 505, and the power management module 508 is used for outputting the voltage value and/or the working current of the battery to the bluetooth main control module 509 and switching on or off the power supply circuit of the battery under the control of the bluetooth main control module 509.
This embodiment has solved the problem that independent NFC antenna, bluetooth antenna and wireless charging antenna disturbed each other through the mode of sharing the antenna, makes the original IC chip of wiring transformation simpler simultaneously.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (7)
1. A smart card, comprising:
IC card chip and blue tooth circuit;
the bluetooth circuit includes: the Bluetooth system comprises a Bluetooth main control module, a Bluetooth antenna, a charging circuit and a rechargeable battery, wherein the rechargeable battery supplies power to the Bluetooth circuit; the Bluetooth antenna is an antenna integrating Bluetooth, NFC and wireless charging functions;
the Bluetooth circuit is connected with an IC card contact of the IC card chip;
the Bluetooth master control module configures working modes of the smart card in different scenes according to the situation of a user or the preset situation, wherein the working modes comprise a Bluetooth interaction mode, an NFC interaction module, a wireless charging module, a mode of directly inserting an external card reading device and a card slot charging mode of charging through an IC card contact; determining the working mode of the smart card according to the type of the access signal;
the Bluetooth master control module is connected with the keys, controls the Bluetooth master control circuit to be turned on or turned off through the keys, and confirms or cancels the operation currently detected by the Bluetooth master control module;
in the control method of the intelligent card, the working process of the Bluetooth circuit comprises the following steps:
receiving an access signal:
judging the type of the access signal;
controlling the smart card to work according to the type of the access signal;
the access signal type comprises a key starting signal, a card reading signal of external card reading equipment or a charging signal;
when the type of the access signal is a starting signal, the specific substep of controlling the smart card to work according to the type of the access signal is as follows:
s1: carrying out Bluetooth broadcast, waiting for connection with an external device, if the connection is successful, turning to the step S2, and if the connection is overtime, turning to the step S4;
s2: successfully connecting with external equipment, waiting for information interaction operation of a user, and turning to the step S3, and if no operation exists for a period of time, turning to the step S4;
s3: the external device performs data interaction with the IC card chip through the Bluetooth antenna of the Bluetooth circuit and the 7816 interface of the Bluetooth circuit, and if the user does not operate for a period of time, the step goes to step S4;
s4: shutting down;
when the type of the access signal is a card reading signal of an external card reading device, the Bluetooth circuit is automatically powered off;
and if the type of the access signal is a charging signal, starting a charging process, and checking whether the access signal is full or not and whether the user terminates charging or not in the charging process.
2. The smart card according to claim 1, further comprising an NFC antenna and a wireless charging antenna, wherein the IC card chip is a dual-interface IC card, the NFC antenna is connected to the secure processing module of the IC card chip, and the wireless charging antenna is connected to the charging circuit.
3. The smart card of claim 1, wherein the IC card chip is a contact IC card chip, the bluetooth circuit further comprises an NFC processing unit, the NFC processing unit is integrated in the bluetooth master control module, and the bluetooth antenna is used as an NFC antenna or a wireless charging antenna under the control of the bluetooth master control in different application scenarios.
4. The smart card of claim 1, wherein the charging circuit is further configured to:
in the process of charging the rechargeable battery, outputting a power supply state of the rechargeable battery to the Bluetooth master control module, wherein the power supply state at least comprises one of the following states:
uncharged, charging in progress, charging completed, and charging failure.
5. The smart card of claim 1, wherein: the smart card is still including embedded NFC antenna in the card base, and the NFC antenna is connected with the IC-card chip, wherein:
when the NFC antenna receives an NFC signal, the IC card chip judges whether processing data sent by the Bluetooth circuit is being processed or not;
if the processing data sent by the Bluetooth circuit is being processed, selecting a processing sequence according to a preset rule or the selection of a user;
otherwise, processing the data received by the NFC antenna.
6. The smart card of claim 1, wherein: the IC card chip is a contact type IC card chip, the Bluetooth master control module of the Bluetooth circuit comprises an NFC processing unit, an antenna of the Bluetooth circuit receives wireless signals, and when the Bluetooth circuit judges that the type of the access signal is an NFC signal, the IC card chip performs non-connection data interaction with the outside through the NFC processing unit of the Bluetooth circuit.
7. The smart card of claim 5 or 6, wherein: according to the type of the access signal and the application scene, the IC card chip or the Bluetooth main control module sets the priority of the working mode of the intelligent card, and the working mode comprises the following steps: the mobile phone comprises a Bluetooth interaction mode, an NFC interaction mode, a direct-insertion external card reading device mode, a wireless charging mode and a card slot charging mode.
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| CN111475430B (en) * | 2019-01-24 | 2023-04-11 | 深圳市文鼎创数据科技有限公司 | Java card chip communication equipment and communication method |
| FR3100417B1 (en) * | 2019-08-30 | 2022-11-11 | St Microelectronics Rousset | Priority management |
| CN110866580B (en) * | 2019-10-31 | 2024-01-16 | 天星数科科技有限公司 | Preprocessing method and device for configuring NFC smart card |
| CN112508158A (en) * | 2020-12-22 | 2021-03-16 | 楚天龙股份有限公司 | Multifunctional smart card and interaction method thereof |
| CN113988247A (en) * | 2021-11-15 | 2022-01-28 | 中国银行股份有限公司 | Payment card and payment method |
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