WO2023221429A1 - Card emulation method, and nfc chip and electronic device - Google Patents

Abstract

The embodiments of the present application relate to the field of NFC. Provided are a card emulation method, and an NFC chip and an electronic device. The method comprises: selecting a set of hardware feature parameters from a plurality of sets of hardware feature parameters as a first hardware feature parameter; and if an NFC chip fails to communicate with a second electronic device after the chip is configured with the first hardware feature parameter, switching the first hardware feature parameter to a second hardware feature parameter, and communicating with the second electronic device again according to the second hardware feature parameter. The method provided in the embodiments of the present application facilitates the compatibility of an NFC device, which is working in a CE mode, with different card-reading devices, such that the stability and compatibility of the NFC device, which is working in the CE mode, can be improved.

Description

Card emulation method, NFC chip and electronic equipment

This application claims priority to the Chinese patent application filed with the China Patent Office on May 19, 2022, with the application number 202210557712.8 and the application name "Card Simulation Method, NFC Chip and Electronic Device", the entire content of which is incorporated herein by reference. Applying.

Technical field

Embodiments of the present application relate to the field of NFC, and in particular, to a card simulation method, NFC chip and electronic device.

Background technique

Near Field Communication (NFC), as a communication technology, has been widely used in people's lives. Among them, the working modes of NFC devices mainly include two types, card emulation (Card Emulation, CE) mode and card reader (Reader/Writer, RW) mode. It can be understood that an NFC device is an electronic device with an NFC chip. When the NFC device is in CE mode, the NFC device in CE mode has a card simulation function. At this time, the NFC device in CE mode can be simulated as a card. An NFC chip card, such as access control card, transportation card, bank card, etc., is used to be read and written by the card reading device. When the NFC device is in RW mode, the NFC device in RW mode can actively transmit radio frequency signals to identify, read and write other NFC devices in CE mode. At this time, the NFC device in RW mode can be considered as a NFC card readers, such as POS machines, access control, gates, etc.

Different NFC devices working in CE mode can be configured with different chip card hardware feature parameters (Hardware Feature Parameter). The hardware feature parameters affect the success rate of NFC command interaction. Usually, NFC devices operating in CE mode are pre-configured with a chip card hardware characteristic parameter. Therefore, NFC devices working in CE mode are difficult to be compatible with different card reading devices. Among them, card reading devices can include the above-mentioned NFC devices working in RW mode, or ordinary radio frequency identification (Radio Frequency Identification, RFID) devices. , there will be situations where the NFC device working in CE mode fails to communicate with the card reader device, for example, the access control cannot be opened, POS deduction fails, etc.

Contents of the invention

The embodiment of the present application provides a card simulation method, NFC chip and electronic device, which helps the NFC device working in CE mode to be compatible with different card reading devices, thereby improving the stability of the NFC device working in CE mode. and compatibility.

In the first aspect, embodiments of the present application provide a card emulation method, which is applied to a first electronic device. The first electronic device has an NFC chip. The NFC chip works in CE mode. The first electronic device is preset with multiple sets of hardware. Characteristic parameters, including:

Select one set of hardware feature parameters among the multiple sets of hardware feature parameters as the first hardware feature parameter;

If the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameters, it switches the first hardware characteristic parameters to the second hardware characteristic parameters, and communicates with the second electronic device again according to the second hardware characteristic parameters.

In the embodiment of the present application, multiple sets of hardware feature parameters are preset in the NFC device working in CE mode. After the communication with the card reading device fails using the hardware feature parameters, the hardware feature parameters are switched and communication is carried out again, so that the communication can be carried out again. It helps NFC devices working in CE mode to be compatible with different card reading devices, thereby improving the stability and compatibility of NFC devices working in CE mode.

In one possible implementation manner, each set of hardware feature parameters among multiple sets of hardware feature parameters has a mapping relationship with a combination of NFC mode, NFC technology, and bit rate.

In the embodiment of the present application, by mapping different hardware feature parameters to the combination of NFC mode, NFC technology and bit rate, the first electronic device can quickly select hardware features based on the combination of NFC mode, NFC technology and bit rate. parameters, thereby improving the efficiency of communication.

In one possible implementation manner, the NFC technology and/or bit rate corresponding to the first hardware characteristic parameter and the second hardware characteristic parameter are different.

Embodiments of the present application can implement switching between hardware feature parameters corresponding to different NFC technologies and/or bit rates.

In one possible implementation manner, the NFC technology and bit rate corresponding to the first hardware characteristic parameter and the second hardware characteristic parameter are the same, but the parameter values are different.

Embodiments of the present application can implement switching within hardware feature parameters corresponding to the same NFC technology and the same bit rate.

In one possible implementation manner, the first hardware characteristic parameter is determined by compatibility and/or coverage.

In the embodiment of the present application, the first hardware feature parameters are selected based on compatibility and/or coverage, and hardware feature parameters with higher compatibility and/or coverage for the card reading device are selected first, which can improve the success rate of communication.

In one possible implementation, if the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameters, switching the first hardware characteristic parameters to the second hardware characteristic parameters includes:

After the timer times out, if the NFC chip fails to communicate with the second electronic device after configuring the first hardware feature parameters, the first hardware feature parameters are switched to the second hardware feature parameters. The timer detects the presence of the second electronic device outside. device is started.

In the embodiment of the present application, a timer is used to trigger the switching of hardware feature parameters, thereby avoiding a long wait after communication failure, so that the device can enter sleep as soon as possible to save power consumption.

In one possible implementation, if the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameters, switching the first hardware characteristic parameters to the second hardware characteristic parameters includes:

In response to the detected rapid weakening of the external electromagnetic field, the first hardware characteristic parameter is switched to the second hardware characteristic parameter.

In the embodiment of the present application, the intensity of the external electromagnetic field is detected to trigger the switching of hardware characteristic parameters, so that re-communication can be initiated as soon as possible after communication failure, thereby improving communication efficiency.

In one possible implementation manner, before switching the first hardware characteristic parameter to the second hardware characteristic parameter, the above method further includes:

Put the NFC chip into sleep;

Switching the first hardware characteristic parameter to the second hardware characteristic parameter includes:

After the sleep is completed, the NFC chip is awakened and the first hardware characteristic parameters are switched to the second hardware characteristic parameters.

In the embodiment of the present application, before the hardware feature parameters are switched, the NFC chip is put into a sleep state, which can reduce the power consumption of the entire NFC system.

In a second aspect, embodiments of the present application also provide a card simulation method, which is applied to a first electronic device. The first electronic device has an NFC chip. The NFC chip works in CE mode. The first electronic device presets multiple sets of cards. Hardware characteristic parameters, including:

Select one set of hardware feature parameters from multiple sets of hardware feature parameters as the first hardware feature parameters, and use the first hardware feature parameters to perform hardware detection of the external electromagnetic field;

If the first hardware characteristic parameters are adapted to the external electromagnetic field, configure the NFC chip as the first hardware characteristic parameters so that the first electronic device communicates with the second electronic device based on the first hardware characteristic parameters;

If the first hardware characteristic parameter does not match the external electromagnetic field, the first hardware characteristic parameter is switched to the second hardware characteristic parameter, and the second hardware characteristic parameter is used to perform hardware detection of the external electromagnetic field again.

In the embodiment of the present application, hardware characteristic parameters are used for adaptation within a TD through hardware detection means, and after adaptation, software configuration is performed according to the adapted hardware characteristic parameters. This can avoid the problem of hardware characteristic parameters being changed when the software is running. Switching within multiple TDs causes efficiency reduction due to multiple configurations of hardware feature parameters, thereby improving communication efficiency.

In a third aspect, embodiments of the present application provide an NFC chip, including: a selection module and a communication module, the selection module and communication module being used to execute any of the card simulation methods provided in the first aspect.

In the fourth aspect, embodiments of the present application also provide an NFC chip, including: a detection module, a communication module and a switching module. The detection module, communication module and switching module are used to perform any card simulation provided in the second aspect. method.

In a fifth aspect, embodiments of the present application provide an electronic device, including: a processor and a memory. The memory is used to store a computer program; the processor is used to run the computer program and perform card simulation as described in the first and second aspects. method.

In a sixth aspect, embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is run on a computer, the computer implements the tasks described in the first and second aspects. The card simulation method described above.

Description of the drawings

Figure 1 is a schematic flow chart of an embodiment of the card simulation method provided by this application;

Figure 2 is a schematic diagram of a TD provided by the embodiment of the present application;

Figure 3 is a schematic diagram of hardware feature parameter switching between TDs provided by an embodiment of the present application;

Figure 4 is a schematic flow chart of another embodiment of the card simulation method provided by this application;

Figures 5a-5c are schematic diagrams of TD in the hardware detection scenario provided by the embodiment of the present application;

Figure 6 is a schematic structural diagram of an embodiment of the NFC chip provided by this application;

Figure 7 is a schematic structural diagram of another embodiment of the NFC chip provided by this application;

FIG. 8 is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present application.

Detailed ways

In the embodiment of this application, unless otherwise specified, the character "/" indicates that the related objects are an or relationship. For example, A/B can mean A or B. "And/or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

It should be pointed out that the words "first", "second" and other words involved in the embodiments of this application are only used for differentiation and description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. The quantities are not to be construed as indicating or implying an order.

In the embodiments of this application, "at least one" refers to one or more, and "multiple" refers to two or more. In addition, "at least one of the following" or similar expressions thereof refers to any combination of these items, which may include any combination of a single item (items) or a plurality of items (items). For example, at least one item (item) of A, B or C can represent: A, B, C, A and B, A and C, B and C, or A, B and C. Among them, each of A, B, and C can itself be an element, or it can be a set containing one or more elements.

In the embodiments of this application, "exemplary", "in some embodiments", "in another embodiment", etc. are used to express examples, illustrations or explanations. Any embodiment or design described herein as "example" is not intended to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word example is intended to present a concept in a concrete way.

In the embodiments of this application, "of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be pointed out that when the difference is not emphasized, the meaning to be expressed is are consistent. In the embodiments of this application, communication and transmission can sometimes be used interchangeably. It should be noted that when the difference is not emphasized, the meanings expressed are consistent. For example, transmission can include sending and/or receiving, and can be a noun or a verb.

The equals involved in the embodiments of this application can be used in conjunction with greater than, and are applicable to the technical solution adopted when it is greater than, and can also be used in conjunction with less than, and are applicable to the technical solution adopted when it is less than. It should be noted that when equal is used with greater than, it cannot be used with less than; when equal to is used with less than, it is not used with greater than.

Currently, NFC devices working in CE mode have NFC chips, and the NFC chips have card simulation functions. For example, NFC devices working in CE mode can be simulated as a card, and the NFC chip can be configured with different hardware feature parameters. , used to communicate with card reading devices. Among them, the hardware characteristic parameters can correspond to different NFC technologies, such as NFC technologies A, B, F, and V. Therefore, according to the NFC technology, the hardware characteristic parameters can usually include: CEA hardware characteristic parameters, CEB hardware characteristic parameters, CEF hardware characteristic parameters and CEV hardware characteristic parameters, that is to say, the NFC device working in CE mode can be pre-configured with any of the above CEA hardware characteristic parameters, CEB hardware characteristic parameters, CEF hardware characteristic parameters and CEV hardware characteristic parameters. Characteristic parameters are used for card simulation. The card reading device can usually also be pre-configured with hardware feature parameters, where the hardware feature parameters in the card reading device can include: RWA hardware feature parameters, RWB hardware feature parameters, RWF hardware feature parameters, RWV hardware feature parameters, etc. The card reading device can search for cards based on preset hardware feature parameters. It is understandable that hardware characteristic parameters affect the success rate of NFC command interaction. When the hardware characteristic parameters of the NFC device working in CE mode are adapted to the hardware characteristic parameters of the card reading device, communication between the NFC device working in CE mode and the card reading device can be better completed.

However, in actual application process, since different NFC devices working in CE mode can be pre-configured with hardware characteristic parameters of different NFC technologies, for a certain NFC device working in CE mode, it has fixed hardware characteristics. Parameters, that is to say, configuring the hardware feature parameters of a certain NFC technology. An NFC device working in CE mode can communicate well with a certain card reading device, while another card reading device will be pre-configured with different hardware. Characteristic parameters, resulting in communication failure with another card reading device, making it difficult for different NFC devices working in CE mode to be compatible with different card reading devices.

For example, if the NFC device working in CE mode is configured with one set of parameter values in the CEA hardware feature parameters, the card reading device is configured with one set of parameter values in the RWA hardware feature parameters. Although the NFC device working in CE mode uses the same technology as the card reading device, the parameter values selected in the CEA hardware feature parameters do not match the parameter values selected in the RWA hardware feature parameters. At this time, communication failure will occur. In other words, current NFC devices working in CE mode are not compatible with current card reading devices.

Based on the above problems, the embodiment of the present application proposes a card simulation method, which is applied to electronic devices. The electronic device can be a terminal with NFC card simulation function, such as a mobile phone, a tablet computer, a wearable device, etc.; the implementation of this application For example, there are no special restrictions on the form of electronic equipment. Through the method of the embodiment of the present application, it can help the NFC device working in the CE mode to be compatible with different card reading devices, thereby improving the stability and compatibility of the NFC device working in the CE mode.

The card simulation method provided by the embodiment of the present application will now be described with reference to FIG. 1 .

Figure 1 is a schematic flow chart of an embodiment of a card simulation method provided by the present application. The card simulation method is applied to a first electronic device. The first electronic device has an NFC chip. The NFC chip works in CE mode. An electronic device presets multiple sets of hardware feature parameters, specifically including the following steps:

Step 101: Select one set of hardware feature parameters from multiple sets of hardware feature parameters as the first hardware feature parameter.

Specifically, multiple sets of hardware feature parameters can be pre-stored in the first electronic device, and the hardware feature parameters can be used to configure the NFC chip so that the NFC chip communicates with the second electronic device based on the configured hardware feature parameters. The second electronic device is a card reading device. The second electronic device may be an NFC device operating in RW mode or an ordinary RFID device. The embodiment of the present application does not specifically limit the specific form of the second electronic device. . The above multiple sets of hardware feature parameters can be stored in the NFC chip in advance, or in the memory or other hardware circuits of the first electronic device, or in the server, so that the user can remotely update the settings preset in the first electronic device. Hardware characteristic parameters. The embodiment of the present application does not place special limitations on the storage method of the above-mentioned sets of hardware feature parameters.

It can be understood that when storing the above-mentioned multiple sets of hardware characteristic parameters in the first electronic device, the storage space of the first electronic device can also be detected. If the storage space of the first electronic device is sufficient to store the above-mentioned multiple sets of hardware characteristic parameters, Then the multiple sets of hardware feature parameters can be directly stored in the first electronic device. If the storage space of the first electronic device is not enough to store the multiple sets of hardware feature parameters, the user can be prompted to release part of the storage space in the first electronic device. , in order to store the above multiple sets of hardware characteristic parameters.

Among them, each set of hardware feature parameters can form a mapping relationship with a combination of NFC mode, NFC technology and bit rate in advance. Each set of hardware feature parameters may include M parameters, where M is a positive integer greater than or equal to 1. Among them, the NFC mode is used to characterize the working mode of the NFC chip. For example, the NFC mode can include two modes: CE and RW. The NFC technology is used to characterize the technology used by the NFC chip. The NFC technology can include A, B, F and V; bit rate is used to characterize the data rate of the NFC chip. Taking NFC technologies A, B, and F as an example, Table 1 exemplarily shows the composition of hardware characteristic parameters. It can be understood that the above examples only illustrate NFC technologies A, B, and F, but do not constitute a limitation on the embodiments of the present application. In some embodiments, more NFC technologies may also be included, such as :V.

Table 1

As shown in Table 1, it can include 12 sets of hardware feature parameters, including 5 sets of CE-A hardware feature parameters, 5 sets of CE-B hardware feature parameters, and 2 sets of CE-F hardware feature parameters. It can be understood that the above 12 sets of hardware feature parameters are hardware feature parameters to be selected. After the user selects multiple sets of hardware feature parameters from the above 12 sets of hardware feature parameters, the multiple sets of hardware feature parameters selected by the user can be stored in advance. in the first electronic device. The above 12 sets of hardware characteristic parameters are only illustrative and do not limit the embodiments of the present application. In some embodiments, more or less special parameters of the candidate hardware may be included.

Refer to Table 1. "ON" is used to indicate that the parameter is available. At this time, the user can preset the corresponding parameter value for the parameter. "OFF" is used to indicate that the parameter is disabled. At this time, the user cannot preset the parameter. corresponding parameter values. Through flag bits such as "ON" and "OFF", it can be verified when the user sets the parameter value. This can verify the integrity of the hardware feature parameters and avoid certain parameters in the hardware feature parameters. NULL value. In addition, when users set parameter values for parameters, they can also perform value range verification on the parameter values. For example, the value range of any parameter is preset. If the value of any parameter exceeds the preset value, If the preset range is set, an error can be reported, so that the correctness of the parameter value can be verified, thereby avoiding parameter value setting errors due to human negligence.

Through the mapping of different combinations of NFC modes, NFC technologies and bit rates and hardware feature parameters, multiple sets of different hardware feature parameters can be obtained. Among them, different combinations of NFC modes, NFC technologies and bit rates may include, for example: the same NFC technology but different bit rates; another example: the same bit rate but different NFC technologies; another example: different bit rates but different NFC technologies; another example , the NFC technology is the same, the bit rate is the same, and the parameter values are different. It can be understood that among the above combinations of NFC mode, NFC technology and bit rate, for the first electronic device, the NFC mode is the CE mode.

Table 2 exemplarily shows a schematic diagram of the combination of multiple sets of hardware feature parameters selected by the user.

Table 2

serial number	NFC mode	NFC technology	bitrate	Parameter 1	Parameter 2	Parameter 3	…	Parameter M-1	ParameterM
1	CE	A	106k	a 11	a 12	OFF	…	OFF	OFF
2	CE	A	106k	OFF	a 22	OFF	…	OFF	a 2M
3	CE	B	106k	a 31	OFF	OFF	…	OFF	OFF

4	CE	B	212k	OFF	a 42	OFF	…	OFF	a 4M
5	CE	F	212k	a 51	a 52	OFF	…	OFF	a 5M
6	CE	F	424k	OFF	OFF	OFF	…	a 6M-1	OFF

Refer to Table 2, taking the CE-B hardware characteristic parameters with a bit rate of 106k and the CE-B hardware characteristic parameters with a bit rate of 212k as an example. The CE-B hardware characteristic parameters with a bit rate of 106k and the CE-B bit rate as 212k The NFC technology between B hardware characteristic parameters is the same, but the bit rate is different; taking the CE-A hardware characteristic parameters with a bit rate of 106k and the CE-B hardware characteristic parameters with a bit rate of 106k as an example, the CE-A hardware with a bit rate of 106k The characteristic parameters and the CE-B hardware characteristic parameters with a bit rate of 106k have the same bit rate, but the NFC technology is different; take the CE-A hardware characteristic parameters with a bit rate of 106k and the CE-B hardware characteristic parameters with a bit rate of 212k as an example. , the bit rate is different between the CE-A hardware characteristic parameters with a bit rate of 106k and the CE-B hardware characteristic parameters with a bit rate of 212k, and the NFC technology is different; the CE-A hardware characteristic parameters with a bit rate of 106k and For example, the CE-A hardware characteristic parameters with the bit rate of No. 2 is 106k. The CE-A hardware characteristic parameters with the bit rate of No. 1 are 106k. The NFC technology between the CE-A hardware characteristic parameters with the bit rate of No. 2 is 106k. Same, same bitrate, different parameter values. Different parameter values may mean having different parameters. For example, the CE-A hardware feature parameter numbered 1 with a bit rate of 106k has parameter 1, and the CE-A hardware feature parameter numbered 2 with a bit rate of 106k does not have parameter 1. ; Or, different parameter values can also mean having the same parameters, but the same parameters correspond to different parameter values. For example, the parameter value of parameter 2 in the CE-A hardware feature parameters of number 1 with a bit rate of 106k is a ₁₂ , and the parameter value of parameter 2 in the CE-A hardware feature parameter number 2 with a bit rate of 106k is a ₂₂ , where a ₁₂ is different from a ₂₂ .

It is understandable that after the NFC chip is powered on or reset, the NFC chip will be in an idle state. This idle state can correspond to the RFST_IDLE state in the NFC Controller Interface (NCI) specification. The specific RFST_IDLE The description of the state can refer to the NCI specification and will not be repeated here. In the idle state, the NFC chip can be considered to be sleeping and will not communicate with the second electronic device, thereby reducing the power consumption of the entire NFC system in the first electronic device.

When the NFC chip ends sleeping, it can enter the discovery state, which can correspond to the RFST_DISCOVERY state in the NCI specification. The specific description of the RFST_DISCOVERY state can refer to the NCI specification and will not be repeated here. In the discovery state, the first electronic device can select one set of hardware feature parameters as the first hardware feature parameters from multiple sets of pre-stored hardware feature parameters, and can use the first hardware feature parameters to communicate with the second electronic device.

It should be noted that the first hardware characteristic parameters may be the initially selected hardware characteristic parameters, that is, the hardware characteristic parameters selected by the first electronic device for the first time, or may be the hardware characteristic parameters after switching.

The first hardware characteristic parameters may be randomly selected from multiple sets of hardware characteristic parameters pre-stored in the first electronic device. Preferably, the specific selection method of the first hardware characteristic parameter may also be, for example: determining the first hardware characteristic parameter based on compatibility and/or coverage. Among them, compatibility is used to characterize the degree to which NFC technology and bit rate are compatible with second electronic devices on the market, and coverage is used to characterize the coverage of NFC technology and bit rate for second electronic devices on the market. It can be understood that if the coverage rate is higher, it means that the NFC technology and bit rate are covered by more second electronic devices. Therefore, the hardware characteristic parameters corresponding to the NFC technology and bit rate can be selected, thereby increasing the probability of successful communication. Probability. For example, taking Table 2 as an example, assume that the CE-A hardware feature parameters numbered 1 with a bit rate of 106k can cover 70% of the second electronic devices on the market, and the CE-A hardware feature numbered 2 with a bit rate of 106k If the parameters can cover 30% of the second electronic devices on the market, and the coverage of A technology is higher than other NFC technologies, then the CE-A hardware characteristic parameters numbered 1 with a bit rate of 106k can be selected as the first hardware characteristic parameters. That is to say, the compatibility and/or coverage rate of the above-mentioned first hardware characteristic parameters is greater than or equal to the second hardware characteristic parameters after switching. By preferentially selecting hardware feature parameters with higher compatibility and/or coverage for card reading devices, the success rate of communication can be improved and communication efficiency can be improved.

Step 102: If the NFC chip fails to communicate with the second electronic device after configuring the initial hardware characteristic parameters, switch the first hardware characteristic parameters to the second hardware characteristic parameters, and communicate with the second electronic device again according to the second hardware characteristic parameters. communication.

Specifically, after the first hardware characteristic parameters are determined, the NFC chip can be configured based on the first hardware characteristic parameters, so that the first electronic device can communicate with the second electronic device based on the configured first hardware characteristic parameters. It can be understood that if the communication is successful, the first electronic device and the second electronic device can conduct business interactions based on NFC, such as swiping access control, making mobile payments, etc.

If the communication fails, that is, the NFC chip cannot use the first hardware characteristic parameters to decode the data frame sent by the second electronic device, the first electronic device can switch the first hardware characteristic parameters to the second hardware characteristic parameters, and Communication with the second electronic device can be performed again according to the switched second hardware characteristic parameters.

In specific implementation, the above-mentioned triggering method for switching the hardware feature parameters may be, for example: after the timer times out, if the NFC chip fails to communicate with the second electronic device after configuring the first hardware feature parameters, it may trigger the switching of the hardware feature parameters. Switching of parameters, wherein the timer can be started when the external presence of the second electronic device is detected, and can be closed after the first electronic device successfully communicates with the second electronic device, and the specific method of detecting the external presence of the second electronic device It can be: if an external electromagnetic field is detected, it can be considered that the second electronic device is detected. It can be understood that if the timer does not time out and the first electronic device communicates successfully with the second electronic device, the NFC chip can perform business interaction with the second electronic device based on the configured first hardware feature parameters, without the need for further hardware Switching of characteristic parameters, and can enter sleep after the communication is completed.

Optionally, the triggering method for switching the hardware characteristic parameters may also be: detecting the external electromagnetic field, and switching the hardware characteristic parameters according to the detection results. When it is detected that the external electromagnetic field weakens rapidly, the first hardware characteristic parameter is switched to the second hardware characteristic parameter. For example, if the NFC chip configures the first hardware characteristic parameters and successfully communicates with the second electronic device, when the first electronic device is far away from the second electronic device, it can trigger the switching of the hardware characteristic parameters. In this scenario, it can If the communication is considered to be false and successful, at this time, the first electronic device can switch the hardware characteristic parameters and communicate with the second electronic device again; for another example, configure the first hardware characteristic parameters on the NFC chip and communicate with the second electronic device. During the communication process, when it is detected that the external electromagnetic field weakens rapidly, for example, the user moves the first electronic device away from the second electronic device, the first electronic device can switch hardware feature parameters.

In addition, specific ways of switching the first hardware characteristic parameters to the second hardware characteristic parameters may include the following:

Method 1: Switch the first hardware characteristic parameter to the second hardware characteristic parameter, where the NFC technology and/or bit rate corresponding to the first hardware characteristic parameter and the second hardware characteristic parameter are different.

Taking Table 2 as an example, if the first hardware characteristic parameter is a CE-B hardware characteristic parameter with a bit rate of 106k, then after the communication fails, the first hardware characteristic parameter can be switched to the second hardware characteristic parameter, where the second hardware characteristic parameter The characteristic parameters are CE-B hardware characteristic parameters with a bit rate of 212k. The NFC technology is the same between the CE-B hardware characteristic parameters with a bit rate of 106k and the CE-B hardware characteristic parameters with a bit rate of 212k, but the bit rates are different.

Alternatively, if the first hardware characteristic parameter is the CE-A hardware characteristic parameter numbered 2 with a bit rate of 106k, then after the communication fails, the first hardware characteristic parameter can be switched to the second hardware characteristic parameter, where the second hardware characteristic parameter The parameters are CE-B hardware characteristic parameters with a bit rate of 106k. The CE-A hardware characteristic parameters with a bit rate of 2 are the CE-B hardware characteristic parameters with a bit rate of 106k. The bit rates are the same, but the NFC technology is different.

Or, if the first hardware characteristic parameter is the CE-A hardware characteristic parameter numbered 2 with a bit rate of 106k, then after the communication fails, the first hardware characteristic parameter can be switched to the second hardware characteristic parameter, where the second hardware characteristic parameter The characteristic parameters are CE-B hardware characteristic parameters with a bit rate of 212k. The CE-A hardware characteristic parameters numbered 2 with a bit rate of 106k and the CE-B hardware characteristic parameters with a bit rate of 212k have different bit rates and different NFC technologies. .

Method 2: Switch the first hardware characteristic parameter to the second hardware characteristic parameter, where the first hardware characteristic parameter and the second hardware characteristic parameter correspond to the same NFC technology and bit rate, but different parameter values.

Taking Table 2 as an example, if the first hardware feature parameter is the CE-A hardware feature parameter numbered 1 with a bit rate of 106k, then after the communication fails, the first hardware feature parameter can be switched to the second hardware feature parameter, where, The second hardware feature parameter is the CE-A hardware feature parameter numbered 2 with a bit rate of 106k, the CE-A hardware feature parameter numbered 1 with a bit rate of 106k and the CE-A hardware feature parameter numbered 2 with a bit rate of 106k The bit rate is the same, the NFC technology is the same, and the parameter values are different.

Optionally, before switching the first hardware feature parameter, the NFC chip can also be put into sleep, thereby saving the power consumption of the entire NFC system in the first electronic device. It can be understood that after the sleep is completed, the first electronic device can wake up the NFC chip, and can switch the first hardware characteristic parameter to the second hardware characteristic parameter after waking up the NFC chip.

In the embodiment of the present application, multiple sets of hardware feature parameters are preset in the NFC device working in CE mode. After the communication with the card reading device fails using the hardware feature parameters, the hardware feature parameters are switched and communication is carried out again, so that the communication can be carried out again. It helps NFC devices working in CE mode to be compatible with different card reading devices, thereby improving the stability and compatibility of NFC devices working in CE mode.

Next, the card simulation method provided by the embodiment of the present application will be further described with reference to FIG. 2 .

Figure 2 is a schematic diagram of the complete working cycle (Total Duration, TD) of NFC. As shown in Figure 2, a TD may include an idle period and a discovery period. During the idle period, the NFC chip may be in an idle state. At this time, the NFC chip does not communicate with the second electronic device. That is to say, the NFC chip The chip is in power saving state. During the discovery period, the NFC chip is in the discovery state, and the NFC chip can communicate with the second electronic device. For example, it can detect the electromagnetic field for discovering the second electronic device, and can receive and decode the data frame sent by the second electronic device. It can be understood that if the decoding is successful, the communication can be considered successful, and if the decoding fails, the communication can be considered failed.

Now, with reference to Figure 3, the description will be given by taking the first electronic device's preset 6 sets of hardware characteristic parameters as an example. The above 6 sets of hardware characteristic parameters can be respectively represented as CEA1, CEA2, CEB1, CEB2, CEF1 and CEF2. The above 6 sets of hardware characteristic parameters The specific creation method of the hardware characteristic parameters may refer to the above embodiment, and will not be described again here. For example, CEA1 may correspond to the CE-A hardware feature parameter number 1 in Table 2 with a bit rate of 106k, CEA2 may correspond to the CE-A hardware feature parameter number 2 in Table 2 with a bit rate of 106k, and CEB1 may Corresponding to the CE-B hardware characteristic parameters with a bit rate of 106k in Table 2, CEB2 can correspond to the CE-B hardware characteristic parameters with a bit rate of 212k in Table 2, and CEF1 can correspond to the CE-B with a bit rate of 212k in Table 2. F hardware characteristic parameters, CEF2 can correspond to the CE-F hardware characteristic parameters with a bit rate of 424k in Table 2.

After the NFC chip is powered on, the NFC chip can be initialized. For example, the NFC chip can be set to work in CE mode, and various NFC technologies in CE mode can be enabled, so that the NFC chip can be used Enabled NFC technology. At this time, the NFC chip is in idle state. It can be understood that the embodiments of the present application take the enabled NFC technology combination of A, B, and F as an example for illustrative description, but this does not constitute a limitation of the present application. In some embodiments, more or more may be included. There are even fewer other technologies or technology combinations, for example, A technology, or the technology combination of A and F, or the technology combination of B and F, or the technology combination of A and B, or the technology combination of A, B, F and V, etc.

When the NFC chip enters the first TD, the NFC chip enters the discovery period of the first TD, that is, it is in the discovery state. At this time, the NFC chip can select one set of hardware feature parameters as the first set of hardware feature parameters among the above multiple sets of hardware feature parameters. Then, the NFC chip is configured based on the first set of hardware characteristic parameters, and communicates with the second electronic device through the configured first set of hardware characteristic parameters. Taking the first set of hardware characteristic parameters as CEA1 as an example, the NFC chip can communicate with the second electronic device through the CEA1 hardware characteristic parameters under A technology. If the communication is successful during the discovery period of the first TD, the NFC chip uses the CEA1 hardware characteristic parameters to further interact with the NFC command with the second electronic device to complete this business. If communication fails during the discovery period of the first TD, the NFC chip enters the idle period of the first TD and can enter sleep, thereby saving the power consumption of the entire NFC system of the first electronic device. In specific implementation, during the discovery period, when the NFC chip detects the presence of a second electronic device externally, the timer can be started. For example, the duration of the timer can be 100ms or other values. This application The embodiment does not specifically limit the discovery period; when the timer times out, the timer can be considered to have ended. If the first electronic device has not successfully communicated with the second electronic device at this time, it can enter sleep. It can be understood that if the timer does not time out and the first electronic device communicates successfully with the second electronic device, the first electronic device can turn off the timer and further interact with the NFC command with the second electronic device to complete this time. business, and enter hibernation after completing this business. It should be noted that the first electronic device can also trigger the switching of hardware characteristic parameters by detecting external electromagnetic fields. If it detects that the external electromagnetic field weakens rapidly, it can stop communication with the second electronic device and enter sleep.

When the dormancy ends, the NFC chip enters the second TD discovery period. It can be understood that the end of sleep refers to the end of the idle period. At this time, the first electronic device can wake up the NFC chip again, and the NFC chip enters the discovery state again. Then, the first electronic device can switch the above-mentioned first set of hardware feature parameters, thereby switching the first set of hardware feature parameters (that is, CEA1) to another set of hardware feature parameters, for example, CEA2. Then, the NFC chip can be configured based on the switched hardware characteristic parameters (for example, CEA2), and communicate with the second electronic device through the configured hardware characteristic parameters. Taking the switched hardware characteristic parameter as CEA2 as an example, the NFC chip can communicate with the second electronic device through the CEA2 hardware characteristic parameter under A technology. If communication is successful during the discovery period of the second TD, the first electronic device and the second electronic device further interact with NFC commands to complete this service, and enter sleep after completing this service. If communication fails during the discovery period of the second TD, the NFC chip enters the idle period of the second TD and enters sleep again.

When the dormancy ends, the NFC chip enters the third TD discovery period. At this time, the first electronic device can wake up the NFC chip again, and the NFC chip enters the discovery state again. Then, the first electronic device may switch the above-switched hardware characteristic parameter (for example, CEA2) again. Taking the hardware characteristic parameter of this switching as CEB1 as an example, the first electronic device can switch CEA2 to CEB1. Then, the NFC chip is configured based on the switched hardware characteristic parameters (for example, CEB1), and communicates with the second electronic device through the configured hardware characteristic parameters. If communication is successful during the discovery period of the third TD, the first electronic device and the second electronic device further interact with NFC commands to complete this service, and enter sleep after completing this service. If communication fails during the discovery period of the third TD, the NFC chip enters the idle period of the third TD and enters sleep again.

When the dormancy ends, the NFC chip enters the fourth TD discovery period. At this time, the first electronic device can wake up the NFC chip again, and the NFC chip enters the discovery state again. Then, the first electronic device can switch the switched hardware characteristic parameter (for example, CEB1) again. In this way, the switched hardware characteristic parameters (that is, CEB1) can be switched again, for example, to CEB2. Then, the NFC chip is configured based on the switched hardware characteristic parameters (for example, CEB2), and communicates with the second electronic device through the configured hardware characteristic parameters. Taking the switched hardware characteristic parameter as CEB2 as an example, the NFC chip can communicate with the second electronic device through the CEB2 hardware characteristic parameter under B technology. If communication is successful during the discovery period of the fourth TD, the first electronic device and the second electronic device further interact with NFC commands to complete this service, and enter sleep after completing this service. If communication fails during the discovery period of the fourth TD, the NFC chip enters the idle period of the fourth TD and enters sleep again.

When the dormancy ends, the NFC chip enters the fifth TD discovery period. At this time, the first electronic device can wake up the NFC chip again, and the NFC chip enters the discovery state again. Then, the first electronic device can switch the above-switched hardware characteristic parameters (for example, CEB2) again. Taking the hardware characteristic parameter of this switching as CEF1 as an example, the first electronic device can switch CEB2 to CEF1. Then, the NFC chip is configured based on the switched hardware characteristic parameters (for example, CEF1), and communicates with the second electronic device through the configured hardware characteristic parameters. If communication is successful during the discovery period of the fifth TD, the first electronic device and the second electronic device further interact with NFC commands to complete this service, and enter sleep after completing this service. If communication fails during the discovery period of the fifth TD, the NFC chip enters the idle period of the fifth TD and enters sleep again.

When the dormancy ends, the NFC chip enters the sixth TD discovery period. At this time, the first electronic device can wake up the NFC chip again, and the NFC chip enters the discovery state again. Then, the first electronic device can switch the switched hardware characteristic parameter (for example, CEF1) again. In this way, the switched hardware characteristic parameters (that is, CEF1) can be switched again, for example, to CEF2. Then, the NFC chip is configured based on the switched hardware characteristic parameters (for example, CEF2), and communicates with the second electronic device through the configured hardware characteristic parameters. Taking the switched hardware characteristic parameter as CEF2 as an example, the NFC chip can communicate with the second electronic device through the CEF2 hardware characteristic parameter under F technology. If communication is successful during the discovery period of the sixth TD, the first electronic device and the second electronic device further interact with NFC commands to complete this service, and enter sleep after completing this service. If communication fails during the discovery period of the sixth TD, the NFC chip enters the idle period of the sixth TD and enters sleep again.

It can be understood that when the first electronic device still cannot successfully communicate with the second electronic device after trying all the preset hardware feature parameters, at this time, the above-mentioned steps of the first TD to the sixth TD can be re-executed.

Next, the card simulation method provided by the embodiment of the present application will be further described with reference to FIG. 4, FIG. 5a, FIG. 5b, and FIG. 5c.

Figure 4 is a schematic flow chart of another embodiment of a card simulation method provided by the present application. The card simulation method is applied to a first electronic device. The first electronic device has an NFC chip. The NFC chip works in CE mode. The first electronic device The device presets multiple sets of hardware feature parameters, including the following steps:

Step 401: Select one set of hardware feature parameters from multiple sets of hardware feature parameters as the first hardware feature parameters, and use the first hardware feature parameters to perform hardware detection of the external electromagnetic field.

Specifically, the discovery period in the TD of the NFC chip can be used to perform hardware detection and/or configure hardware feature parameters. When the NFC chip enters the TD, hardware detection can be performed. The hardware that performs hardware detection may be an NFC chip, a module in the NFC chip, or a peripheral hardware circuit. The embodiment of the present application does not specifically limit the type of hardware that performs hardware detection.

A specific method of performing hardware detection may be: selecting one set of hardware feature parameters from multiple sets of hardware feature parameters as the first hardware feature parameters, and using the first hardware feature parameters to perform hardware detection of the external electromagnetic field. The external electromagnetic field may be a radio frequency field of the second electronic device. It can be understood that the specific selection method of the first hardware characteristic parameter may refer to the above embodiment, and will not be described again here.

Step 402: If the first hardware characteristic parameter matches the external electromagnetic field, configure the NFC chip as the first hardware characteristic parameter so that the first electronic device communicates with the second electronic device based on the first hardware characteristic parameter; if the first hardware If the characteristic parameter does not match the external electromagnetic field, the first hardware characteristic parameter is switched to the second hardware characteristic parameter, and the second hardware characteristic parameter is used to perform hardware detection of the external electromagnetic field again.

Specifically, if the first hardware characteristic parameters are adapted to the external electromagnetic field, that is, if it is determined through hardware detection that the first hardware characteristic parameters are adapted to the second electronic device, the NFC chip can configure the hardware within the discovery period of the current TD. Feature parameters, for example, the hardware can notify the software of the NFC technology, bit rate and parameter value corresponding to the currently adapted first hardware feature parameter, thereby enabling the first electronic device to use the notified first hardware feature when the software is running. The NFC technology, bit rate and parameter values corresponding to the parameters are configured, and communication can be performed with the second electronic device based on the configured first hardware feature parameters. If the first hardware characteristic parameter does not match the external electromagnetic field, the first electronic device can switch the first hardware characteristic parameter to the second hardware characteristic parameter, and use the switched second hardware characteristic parameter to detect the external electromagnetic field again. It can be understood that if the second hardware characteristic parameters still fail to adapt, the hardware characteristic parameters can be further switched, and the hardware detection can be performed again based on the switched hardware characteristic parameters until all the hardware characteristic parameters pre-stored in the electronic device are Until the adaptation is completed, the adaptation of all hardware feature parameters can be completed in one TD, thus avoiding the reduction in efficiency caused by software configuring hardware feature parameters in multiple TDs to communicate with the second electronic device. The specific switching method of the hardware feature parameters may refer to the above embodiment, and will not be described again here.

Next, the above hardware detection scenario will be exemplarily explained with reference to Figures 5a and 5c. Among them, Figure 5a is a schematic diagram of hardware detection. As shown in Figure 5a, the NFC chip can use the first hardware feature parameter to perform hardware detection during the discovery period in any TD (for example, the first TD). The selection method of the first hardware feature parameter can refer to the above embodiment. I won’t go into details here. If the first hardware characteristic parameter is adapted to the external electromagnetic field, the NFC chip can be configured based on the first hardware characteristic parameter within the current TD as shown in Figure 5b, so that the NFC chip based on the configured hardware characteristic parameter is consistent with the second electronic field. devices communicate. If the first hardware characteristic parameters are not suitable for the external electromagnetic field, the hardware characteristic parameters can be switched within the current TD as shown in Figure 5c, and the hardware detection can be performed again based on the switched hardware characteristic parameters until it is within the current TD. Until all hardware feature parameters are adapted.

In the embodiment of this application, during the hardware detection phase, different hardware feature parameters can be tried in the same TD to adapt to the card reading device, and after the adaptation is successful, the adapted hardware feature parameters will be directly configured to the NFC chip. In this way, the adaptation of hardware characteristic parameters can be completed within one TD through hardware detection means, thereby avoiding multiple configurations of hardware characteristic parameters caused by switching of hardware characteristic parameters in multiple TDs when the software is running, thereby improving the software execution efficiency.

Figure 6 is a schematic structural diagram of an embodiment of the NFC chip provided by the present application. As shown in Figure 6, the above-mentioned NFC chip 60 is applied to the first electronic device, that is, the first electronic device has the NFC chip 60, and the NFC chip works in CE mode. , the first electronic device presets multiple sets of hardware feature parameters, and the NFC chip 60 may include: a selection module 61 and a communication module 62; wherein,

The selection module 61 is used to select one set of hardware feature parameters among multiple sets of hardware feature parameters as the first hardware feature parameter;

The communication module 62 is used to switch the first hardware characteristic parameters to the second hardware characteristic parameters if the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameters, and communicate with the second hardware characteristic parameters according to the second hardware characteristic parameters. The electronic devices communicate again.

In one possible implementation manner, each set of hardware feature parameters among multiple sets of hardware feature parameters has a mapping relationship with a combination of NFC mode, NFC technology, and bit rate.

In one possible implementation manner, the NFC technology and/or bit rate corresponding to the first hardware characteristic parameter and the second hardware characteristic parameter are different.

In one possible implementation manner, the NFC technology and bit rate corresponding to the first hardware characteristic parameter and the second hardware characteristic parameter are the same, but the parameter values are different.

In one possible implementation manner, the first hardware characteristic parameter is determined by compatibility and/or coverage.

In one possible implementation manner, the above-mentioned communication module 62 is specifically used to switch the first hardware characteristic parameter to the second electronic device if the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameter after the timer times out. The second hardware characteristic parameter is that the timer is started when the second electronic device is detected externally.

In one possible implementation, the above-mentioned communication module 62 is also used to switch the first hardware characteristic parameter to the second hardware characteristic parameter in response to the detected rapid weakening of the external electromagnetic field.

In one possible implementation, the above-mentioned communication module 62 is specifically used to put the NFC chip into sleep;

After the sleep is completed, the NFC chip is awakened and the first hardware characteristic parameters are switched to the second hardware characteristic parameters.

It can be understood that the beneficial effects of the chip 60 in the embodiments of the present application can be specifically referred to the beneficial effects of the above method embodiments, and will not be described again here.

Figure 7 is a schematic structural diagram of another embodiment of the NFC chip provided by the present application. As shown in Figure 7, the above-mentioned NFC chip 70 is applied to the first electronic device, that is, the first electronic device has the NFC chip 70, and the NFC chip works in the CE mode. , the first electronic device presets multiple sets of hardware feature parameters. The NFC chip 70 may include: a detection module 71, a communication module 72 and a switching module 73; wherein,

The detection module 71 is used to select one set of hardware feature parameters as the first hardware feature parameters from multiple sets of hardware feature parameters, and use the first hardware feature parameters to perform hardware detection of the external electromagnetic field;

The communication module 72 is used to configure the NFC chip as the first hardware characteristic parameter if the first hardware characteristic parameter is adapted to the external electromagnetic field, so that the first electronic device communicates with the second electronic device based on the first hardware characteristic parameter;

The switching module 73 is used to switch the first hardware characteristic parameter to the second hardware characteristic parameter if the first hardware characteristic parameter does not match the external electromagnetic field, and use the second hardware characteristic parameter to perform hardware detection of the external electromagnetic field again.

It can be understood that the beneficial effects of the chip 70 in the embodiment of the present application can be specifically referred to the beneficial effects of the above method embodiments, and will not be described again here.

FIG. 8 is a schematic structural diagram of an electronic device 800 provided by an embodiment of the present application. The electronic device 800 may include: at least one processor; and at least one memory communicatively connected to the processor. The above-mentioned electronic device 800 may be an NFC device. The above-mentioned memory stores program instructions that can be executed by the above-mentioned processor, and the processor can call the above-mentioned program instructions to perform actions performed by the NFC device provided by the embodiment of the present application.

As shown in Figure 8, electronic device 800 may take the form of a general-purpose computing device. The components of the electronic device 800 may include, but are not limited to: one or more processors 810, memory 820, a communication bus 840 and a communication interface 830 connecting different system components (including the memory 820 and the processor 810).

Communications bus 840 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics accelerated port, a processor, or a local bus using any of a variety of bus structures. For example, these architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (Video Electronics Standards) Association, VESA) local bus and Peripheral Component Interconnection (PCI) bus.

Electronic device 800 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by electronic device 800, including volatile and nonvolatile media, removable and non-removable media.

Memory 820 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) and/or cache memory. Electronic device 800 may further include other removable/non-removable, volatile/non-volatile computer system storage media. Although not shown in FIG. 8, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") may be provided, as well as a disk drive for reading and writing a removable non-volatile optical disk (e.g., a compact disk read-only memory). Disc Read Only Memory (CD-ROM), Digital Video Disc Read Only Memory (DVD-ROM) or other optical media). In these cases, each drive may be connected to communications bus 840 through one or more data media interfaces. The memory 820 may include at least one program product having a set (eg, at least one) program module configured to perform the functions of various embodiments of the present application.

A program/utility having a set of (at least one) program modules may be stored in memory 820. Such program modules include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. In these examples, Each of these, or some combination thereof, may include the implementation of a network environment. Program modules typically perform functions and/or methods in the embodiments described herein.

Electronic device 800 may also communicate with one or more external devices (e.g., keyboard, pointing device, display, etc.), may also communicate with one or more devices that enable a user to interact with electronic device 800, and/or with one or more devices that enable the user to interact with electronic device 800. Electronic device 800 can communicate with any device (eg, network card, modem, etc.) that communicates with one or more other computing devices. This communication may occur through communication interface 830. Moreover, the electronic device 800 can also communicate with one or more networks (such as a local area network (Local Area Network, LAN), a wide area network (Wide Area Network, WAN)) and/or a public network through a network adapter (not shown in Figure 8), such as Internet) communication, the above-mentioned network adapter can communicate with other modules of the electronic device through the communication bus 840. It should be understood that, although not shown in Figure 8, other hardware and/or software modules may be used in conjunction with electronic device 800, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, disk arrays (Redundant Arrays of Independent Drives (RAID) systems, tape drives and data backup storage systems, etc.

Through the above description of the embodiments, those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be allocated as needed. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working processes of the systems, devices and units described above, reference can be made to the corresponding processes in the foregoing method embodiments, which will not be described again here.

Each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application are essentially or contribute to the existing technology, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage device. The medium includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: flash memory, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be covered by the protection scope of the present application. . Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (12)

1. A card simulation method, characterized in that it is applied to a first electronic device, the first electronic device has a near field communication NFC chip, the NFC chip works in the card simulation CE mode, and the first electronic device presets multiple A set of hardware characteristic parameters, the method includes:

   Selecting one set of hardware feature parameters among the plurality of sets of hardware feature parameters as the first hardware feature parameter;

   If the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameters, the first hardware characteristic parameters are switched to the second hardware characteristic parameters, and the NFC chip is configured with the second hardware characteristic parameters according to the second hardware characteristic parameters and the second electronic device. The second electronic device communicates again.
2. The method according to claim 1, characterized in that each set of hardware characteristic parameters in the plurality of sets of hardware characteristic parameters has a mapping relationship with a combination of NFC mode, NFC technology and bit rate.
3. The method according to claim 2, characterized in that the NFC technology and/or bit rate corresponding to the first hardware characteristic parameter and the second hardware characteristic parameter are different.
4. The method according to claim 2, characterized in that the NFC technology and bit rate corresponding to the first hardware characteristic parameter and the second hardware characteristic parameter are the same, but the parameter values are different.
5. The method of claim 4, wherein the first hardware characteristic parameter is determined by compatibility and/or coverage.
6. The method according to claim 1, characterized in that if the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameter, the first hardware characteristic parameter is switched to the second electronic device. 2. Hardware characteristic parameters include:

   When the timer times out, if the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameters, the first hardware characteristic parameters are switched to the second hardware characteristic parameters, and the timer Started when the external presence of the second electronic device is detected.
7. The method according to claim 1, characterized in that if the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameter, the first hardware characteristic parameter is switched to the second electronic device. 2. Hardware characteristic parameters include:

   In response to the detected rapid weakening of the external electromagnetic field, the first hardware characteristic parameter is switched to a second hardware characteristic parameter.
8. The method according to any one of claims 1 to 7, characterized in that before switching the first hardware characteristic parameter to the second hardware characteristic parameter, the method further includes:

   Put the NFC chip into sleep;

   The switching of the first hardware characteristic parameter to the second hardware characteristic parameter includes:

   After the sleep is completed, the NFC chip is awakened and the first hardware characteristic parameters are switched to the second hardware characteristic parameters.
9. A card simulation method, characterized in that it is applied to a first electronic device, the first electronic device has a near field communication NFC chip, the NFC chip works in the card simulation CE mode, and the first electronic device presets multiple A set of hardware characteristic parameters, the method includes:

   Select one set of hardware characteristic parameters from the plurality of sets of hardware characteristic parameters as the first hardware characteristic parameters, and use the first hardware characteristic parameters to perform hardware detection of the external electromagnetic field;

   If the first hardware characteristic parameter is adapted to the external electromagnetic field, the NFC chip is configured as the first hardware characteristic parameter, so that the first electronic device interacts with the second hardware characteristic parameter based on the first hardware characteristic parameter. electronic devices for communication;

   If the first hardware characteristic parameter does not match the external electromagnetic field, the first hardware characteristic parameter is switched to the second hardware characteristic parameter, and the second hardware characteristic parameter is used to perform hardware detection of the external electromagnetic field again.
10. An NFC chip, characterized in that it is applied to a first electronic device. The NFC chip works in a card simulation CE mode. The first electronic device presets multiple sets of hardware feature parameters. The NFC chip includes:

    A selection module for selecting one set of hardware feature parameters among the plurality of sets of hardware feature parameters as the first hardware feature parameter;

    A communication module configured to, if the NFC chip fails to communicate with the second electronic device after configuring the first hardware characteristic parameters, switch the first hardware characteristic parameters to the second hardware characteristic parameters, and configure the NFC chip according to the first hardware characteristic parameters. The two hardware characteristic parameters are communicated with the second electronic device again.
11. An NFC chip, characterized in that it is applied to a first electronic device. The NFC chip works in a card simulation CE mode. The first electronic device presets multiple sets of hardware feature parameters. The NFC chip includes:

    A detection module, configured to select one set of hardware feature parameters as the first hardware feature parameters among the multiple sets of hardware feature parameters, and use the first hardware feature parameters to perform hardware detection of the external electromagnetic field;

    A communication module configured to configure the NFC chip as the first hardware characteristic parameter if the first hardware characteristic parameter is adapted to the external electromagnetic field, so that the first electronic device is based on the first hardware The characteristic parameters are communicated with the second electronic device;

    A switching module, configured to switch the first hardware characteristic parameters to second hardware characteristic parameters if the first hardware characteristic parameters are not suitable for the external electromagnetic field, and use the second hardware characteristic parameters to detect the external electromagnetic field. Perform hardware detection again.
12. An electronic device, characterized in that it includes: a processor and a memory, the memory is used to store a computer program; the processor is used to run the computer program and execute the card simulation method according to any one of claims 1-8 , or perform the card emulation method as claimed in claim 9.

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