WO2024067752A1

WO2024067752A1 - Card reader activation method and apparatus, and device and storage medium

Info

Publication number: WO2024067752A1
Application number: PCT/CN2023/122332
Authority: WO
Inventors: 李志光; 蔡斌臣
Original assignee: 维沃移动通信有限公司
Priority date: 2022-09-28
Filing date: 2023-09-27
Publication date: 2024-04-04
Also published as: CN115587605A

Abstract

The present application belongs to the technical field of wireless communications. Disclosed are a card reader activation method and apparatus, and a device and a storage medium. The card reader activation method comprises: detecting whether a first radio-frequency signal has been received, wherein the first radio-frequency signal is a radio-frequency signal transmitted by a card reader in a low-power card detection (LPCD) state; if the first radio-frequency signal has been received, generating a second radio-frequency signal; and transmitting the second radio-frequency signal, wherein the second radio-frequency signal is used for changing an oscillation voltage corresponding to the first radio-frequency signal, such that when it is detected by the card reader that the change value of the oscillation voltage is greater than a preset change threshold, the card reader exits the LPCD state and enters an activated state.

Description

Card reader activation method, device, equipment and storage medium

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese patent application No. 202211189972.0, filed on September 28, 2022, entitled “Card Reader Activation Method, Device, Equipment and Storage Medium”, the entire contents of which are incorporated herein by reference.

Technical Field

The present application belongs to the field of wireless communication technology, and specifically relates to a card reader activation method, device, equipment and storage medium.

Background technique

NFC (Near Field Communication) is a commonly used near-field communication technology and is widely used in access cards, transportation cards, attendance record cards, consumption cards, ID cards and other scenarios.

At present, the activation method of the card reader based on NFC technology is mainly that the card reader periodically emits radio frequency signals in the LPCD (Low power card detection) state, and determines whether there is an NFC card approaching by the change of the oscillating voltage formed by the radio frequency signal on the NFC coil antenna. If there is an NFC card approaching, the LPCD state is exited and the activation state is entered, so as to further perform card reading and other operations.

In this way, when the card is swiped at a long distance, the card swiping angle is too large, the card swiping speed is too slow, etc., the card reader will be difficult to be successfully activated and the card detection sensitivity will be low.

Summary of the invention

The purpose of the embodiments of the present application is to provide a card reader activation method, device, equipment and storage medium, which can solve the problem that the card reader is difficult to be successfully activated and the card detection sensitivity is low.

In a first aspect, an embodiment of the present application provides a card reader activation method, the method comprising:

Detecting whether a first radio frequency signal is received, where the first radio frequency signal is a radio frequency signal emitted by the card reader in a low power consumption card detection LPCD state;

generating a second radio frequency signal upon receiving the first radio frequency signal;

The second radio frequency signal is transmitted, and the second radio frequency signal is used to change the oscillation voltage corresponding to the first radio frequency signal, so that the card reader exits the LPCD state and enters the activation state when detecting that the change value of the oscillation voltage is greater than a preset change threshold.

In a second aspect, an embodiment of the present application provides a card reader activation device, the device comprising:

A signal detection module, used to detect whether a first radio frequency signal is received, where the first radio frequency signal is a radio frequency signal emitted by the card reader in a low power consumption card detection LPCD state;

a signal generating module, configured to generate a second radio frequency signal upon receiving the first radio frequency signal;

The signal transmitting module is used to transmit the second radio frequency signal, and the second radio frequency signal is used to change the oscillation voltage corresponding to the first radio frequency signal, so that the card reader exits the LPCD state and enters the activation state when detecting that the change value of the oscillation voltage is greater than a preset change threshold.

In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.

In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

In a sixth aspect, an embodiment of the present application provides a computer program product, which is stored in a non-volatile storage medium and is executed by at least one processor to implement the method described in the first aspect.

In the embodiment of the present application, the active electronic device in which the card is located generates a second radio frequency signal when receiving the first radio frequency signal transmitted by the card reader in the LPCD state, and Actively transmit the second RF signal. In this way, since the embodiment of the present application uses the second RF signal to actively change the oscillation voltage corresponding to the first RF signal, the card reader can promptly exit the current LPCD state and enter the activation state when detecting that the change value of the oscillation voltage is greater than the preset change threshold, so that the card reader in the LPCD state can be activated at a long distance, a large angle, and any approach speed. Therefore, the activation difficulty of the card reader can be reduced and the card detection sensitivity can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of an architecture applicable to a card reader activation method provided in an embodiment of the present application;

FIG2 is a flow chart of a card reader activation method provided by an embodiment of the present application;

FIG3 is a structural block diagram of a card reader activation device provided by one embodiment of the present application;

FIG4 is a structural block diagram of an electronic device provided by an embodiment of the present application;

FIG5 is a schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally indicates that the objects associated with each other are in an "or" relationship.

The card reader activation method provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

The following first introduces the architecture applicable to the card reader activation method in the embodiment of the present application.

FIG. 1 is a schematic diagram of an architecture applicable to a card reader activation method provided in an embodiment of the present application.

As shown in FIG1 , the architecture may include an electronic device 10 and a card reader 11. The electronic device 10 may include an active device with an NFC module, such as a mobile phone, a tablet, a wearable device, etc. The card reader 11 may include a card reader device with an NFC module, such as a smart door lock, a car door lock, a mobile phone, etc.

Based on the above architecture, an NFC electronic card may be added to the electronic device 10, and the user may activate the card reader 11 by placing the electronic device 10 close to the card reader 11, and read the NFC electronic card when the card reader 11 is activated.

At present, in order to reduce the power consumption of the card reader, the corresponding card reading operation can be performed when the NFC card (including physical card or electronic card) is detected by using the LPCD technology. Among them, the working principle of the LPCD technology mainly includes: when the card reader is in the LPCD state, a short radio frequency pulse signal is periodically sent to the outside, and the change of the oscillation voltage formed by the radio frequency pulse signal on the NFC coil antenna is detected to determine whether there is a metal equivalent approaching (such as an NFC card with a metal coil, metal, human hand, etc.). If a metal equivalent is found to be approaching, the LPCD state is exited, and a complete ordinary card inspection command is sent to determine whether there is a card response command. If so, communication continues and the card reading operation is performed; if there is no response, it returns to the LPCD state. It should be noted that if there is no metal equivalent approaching, the card reader is in the LPCD state for a long time, making the overall power consumption of the card reader extremely low.

Based on this, for existing card readers that have activated the LPCD low-power mode, when the card is swiped at a long distance, the card swiping angle offset is too large, or the card swiping speed is too slow, the oscillation voltage of the card reader antenna will change very little, and the card reader will not be triggered to exit the LPCD low-power mode. In other words, the card reader cannot detect the approach of a card or electronic device, which makes it difficult to successfully activate the card reader and has low card detection sensitivity.

In order to solve the above technical problems, the embodiment of the present application utilizes the active transmission technology capability of the electronic device where the card is located. When a first radio frequency signal emitted by a card reader in the LPCD state is detected, a second radio frequency signal is actively transmitted to the card reader to increase the change amplitude of the oscillation voltage corresponding to the first radio frequency signal, so that the card reader can quickly sense the card in the electronic device, thereby exiting the LPCD state in time, reducing the difficulty of activating the card reader and improving the card detection sensitivity.

The card reader activation method provided in this application can be applied to NFC card swiping scenarios. The card reader activation method provided in the embodiment of the present application is described in detail in conjunction with FIG2. It should be noted that the card reader activation method provided in the embodiment of the present application can be executed by a card reader activation device. In the embodiment of the present application, the card reader activation method provided in the embodiment of the present application is described by taking the card reader activation device executing the card reader activation method as an example.

FIG. 2 is a flow chart of a card reader activation method provided in an embodiment of the present application.

As shown in FIG. 2 , the card reader activation method may include steps: S210 - S230 , which are described in detail below.

S210, detecting whether a first radio frequency signal is received, where the first radio frequency signal is a radio frequency signal emitted by the card reader in a low power consumption card detection LPCD state.

In the embodiment of the present application, the first radio frequency signal may be a radio frequency signal emitted by a card reader close to the electronic device, and the radio frequency signal may be a pulse signal with a frequency of 13.56 MHz, for example. The working state of the card reader before being activated may be an LPCD state.

Exemplarily, before the card reader detects a metal equivalent, that is, before it is activated, it may be in an LPCD state, in which the card reader may periodically send out an LPCD pulse signal, that is, a first radio frequency signal. In addition, taking the electronic device as a mobile phone equipped with an electronic card as an example, before triggering communication with the card reader, the mobile phone may be in a monitoring mode, which may be a passive mode. If the surrounding radio frequency field environment changes, it may cause changes in the voltage and other states in the circuits related to the radio frequency device in the mobile phone, thereby triggering communication. Here, when the mobile phone is not close to the card reader, the mobile phone generally does not consume additional power.

In some specific examples, the mobile phone can detect whether a 13.56 MHz pulse signal transmitted by the card reader is received by detecting changes in voltage and other states in circuits related to the radio frequency device.

S220: Generate a second radio frequency signal when the first radio frequency signal is received.

Here, the second RF signal generated by the electronic device may be a signal having the same carrier frequency but a different phase as the first RF signal, or a signal having the same carrier frequency and phase as the first RF signal, which is not limited here. The second RF signal may also be a pulse signal with a frequency of 13.56 MHz, for example.

In some specific examples, when the mobile phone receives a first RF signal sent by the card reader, the mobile phone can actively modulate and generate a second RF signal with the same carrier frequency as the first RF signal but with a different phase. For example, when the first RF signal is a RF pulse of 13.56 MHz and a phase of 0° When the mobile phone generates a second radio frequency signal, the second radio frequency signal may be a radio frequency pulse signal of 13.56 MHz and a phase of 90°.

S230, transmitting a second RF signal, the second RF signal is used to change the oscillation voltage corresponding to the first RF signal, so that the card reader exits the LPCD state and enters the activation state when detecting that the change value of the oscillation voltage is greater than a preset change threshold.

In an embodiment of the present application, after the electronic device generates a second RF signal, the RF antenna-related circuit can be used to transmit the second RF signal, so as to change the oscillation voltage corresponding to the first RF signal through the second RF signal, so that the oscillation voltage sensed by the NFC coil of the card reader can undergo a drastic change, thereby prompting the card reader to exit the LPCD state and enter the activated state to perform normal identification and reading operations.

For example, after the electronic device transmits the second RF signal, the first RF signal will undergo a drastic change in amplitude due to the influence of the second RF signal. After the card reader receives the drastically changing RF signal, the oscillation voltage of its internal NFC coil will also change drastically, causing it to exit the LPCD state in time after sensing that the oscillation voltage change value reaches a preset change threshold, and then continue normal card reading operations.

Thus, by utilizing the active electronic device in which the card is located to generate a second RF signal and actively transmit the second RF signal when receiving the first RF signal transmitted by the card reader in the LPCD state, the embodiment of the present application utilizes the second RF signal to actively change the oscillation voltage corresponding to the first RF signal, so that the card reader can exit the current LPCD state in time and enter the activation state when detecting that the change value of the oscillation voltage is greater than the preset change threshold, so that the card reader in the LPCD state can be activated at a long distance, a large angle, and any approach speed. Therefore, the activation difficulty of the card reader can be reduced and the card detection sensitivity can be improved.

In addition, in an optional implementation manner, the second radio frequency signal may include multiple radio frequency sub-signals, and different radio frequency sub-signals may correspond to different phases.

Based on this, the above S230 may specifically include:

A plurality of radio frequency sub-signals are transmitted in sequence in different time periods, wherein one radio frequency sub-signal is transmitted in one time period.

Here, in order to make the oscillation voltage sensed by the card reader change more, a plurality of RF sub-signals with different phases can be generated when the second RF signal is generated. The plurality of radio frequency sub-signals may have the same carrier frequency but different phases.

Exemplarily, the electronic device may transmit the multiple radio frequency sub-signals in sequence in a cycle, and each radio frequency sub-signal transmits a signal of a preset duration according to its own phase.

In this way, since the phase corresponding to each of the multiple RF sub-signals is different, the degree of influence on the amplitude of the first RF signal is also different. In this way, the degree of change in the oscillation voltage of the RF signal finally perceived by the card reader will also be more drastic, thereby making it easier to trigger the card reader to exit the LPCD state, further reducing the difficulty of activating the card reader and improving the card detection sensitivity.

Based on this, in some implementations, the number of the above-mentioned radio frequency sub-signals may specifically be two. Specifically, in an optional implementation, the above-mentioned multiple radio frequency sub-signals may include a first radio frequency sub-signal and a second radio frequency sub-signal, and the phase difference between the first radio frequency sub-signal and the second radio frequency sub-signal is greater than a preset threshold.

Based on this, the above-mentioned step of sequentially transmitting a plurality of radio frequency sub-signals in different time periods may specifically include:

The first radio frequency sub-signal and the second radio frequency sub-signal are transmitted alternately.

Here, the preset threshold can be set according to actual needs, such as 90°. Of course, the phase difference between the first RF sub-signal and the second RF sub-signal can also be a preset fixed difference. Specifically, in some embodiments, the phase difference between the first RF sub-signal and the second RF sub-signal can be 180°. The purpose of setting the phase difference to 180° is to modulate two RF sub-signals with the largest difference in signal amplitude. In this way, when the two RF sub-signals act alternately on the first RF signal in turn, the amplitude change of the first RF signal can be maximized, so that the card reader can sense the drastic change in the oscillation voltage, thereby exiting the LPCD state in time.

Exemplarily, after generating two radio frequency sub-signals with a phase difference of 180°, the mobile phone may transmit the two radio frequency sub-signals alternately according to a preset period.

Based on this, in some implementations, when the second RF signal includes the first RF sub-signal and the second RF sub-signal, the above S220 may specifically include:

Acquire a first phase corresponding to the first radio frequency signal;

Determine, according to the first phase, a second phase whose phase difference with the first phase is greater than a preset threshold;

A first radio frequency sub-signal having a first phase and a second radio frequency sub-signal having a second phase are generated.

Here, the first RF sub-signal may be a RF sub-signal having the same phase as the first RF signal, and the second RF sub-signal may be a RF sub-signal having a phase difference with the first RF signal greater than a preset threshold.

Exemplarily, when the first phase corresponding to the first RF signal is obtained to be 0°, the electronic device can generate a first RF sub-signal with a phase of 0° and a second RF sub-signal with a phase of 180° through modulation, and alternately transmit the two RF sub-signals to the outside. In this way, after the two RF sub-signals respectively meet the first RF signal in space, RF signals with two amplitudes can be generated, and the difference between the two amplitudes is large. In this way, the NFC coil of the card reader can sense the two RF signals with large amplitude differences in space, that is, sense the drastic changes in the oscillation voltage. After the change value reaches the preset change threshold, the card reader will exit the LPCD state, enter the activation state, and perform the corresponding card reading operation.

In this way, by generating a first RF sub-signal having the same phase as the first RF signal and a second RF sub-signal having a phase difference with the first RF signal greater than a preset threshold, the degree of change in the oscillating voltage sensed by the card reader can be made greater, thereby making it easier to activate the card reader and improving the card detection sensitivity of the card reader.

It should be noted that the application scenarios described in the above-mentioned embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Ordinary technicians in this field can know that with the emergence of new application scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

Based on the same inventive concept, the present application also provides a card reader activation device. The card reader activation device provided in the embodiment of the present application is described in detail below in conjunction with FIG.

Fig. 3 is a structural block diagram of a card reader activation device according to an exemplary embodiment.

As shown in FIG3 , the card reader activation device 300 may include:

The signal detection module 301 is used to detect whether a first radio frequency signal is received, where the first radio frequency signal is a radio frequency signal emitted by the card reader in a low power consumption card detection LPCD state;

A signal generating module 302, configured to generate a second radio frequency signal when the first radio frequency signal is received;

The signal transmitting module 303 is used to transmit the second radio frequency signal, and the second radio frequency signal is used to change the oscillation voltage corresponding to the first radio frequency signal, so that the card reader exits the LPCD state and enters the activation state when detecting that the change value of the oscillation voltage is greater than a preset change threshold.

The card reader activation device 300 is described in detail below, as shown below:

In one of the embodiments, the second radio frequency signal includes a plurality of radio frequency sub-signals, and different radio frequency sub-signals correspond to different phases;

The signal transmission module 303 includes:

The sub-signal transmitting submodule is used to transmit the multiple radio frequency sub-signals in sequence in different time periods, wherein one radio frequency sub-signal is correspondingly transmitted in one time period.

In one of the embodiments, the plurality of radio frequency sub-signals include a first radio frequency sub-signal and a second radio frequency sub-signal, and a phase difference between the first radio frequency sub-signal and the second radio frequency sub-signal is greater than a preset threshold;

The sub-signal transmitting sub-module comprises:

The alternating transmitting unit is used to alternately transmit the first radio frequency sub-signal and the second radio frequency sub-signal.

In one embodiment, the phase difference between the first radio frequency sub-signal and the second radio frequency sub-signal is 180°.

In one embodiment, the signal generating module 302 includes:

A phase acquisition submodule, used to acquire a first phase corresponding to the first radio frequency signal;

a phase determination submodule, configured to determine, based on the first phase, a second phase whose phase difference with the first phase is greater than the preset threshold;

The sub-signal generating sub-module is configured to generate the first radio frequency sub-signal having the first phase and the second radio frequency sub-signal having the second phase.

Thus, by utilizing the active electronic device in which the card is located to generate a second RF signal when receiving the first RF signal transmitted by the card reader in the LPCD state, and actively transmitting the second RF signal, the embodiment of the present application utilizes the second RF signal to actively change the first The oscillation voltage corresponding to the radio frequency signal enables the card reader to exit the current LPCD state in time and enter the activation state when detecting that the change value of the oscillation voltage is greater than the preset change threshold, so that the card reader in the LPCD state can be activated at a long distance, a large angle, and any approach speed. Therefore, the activation difficulty of the card reader can be reduced and the card detection sensitivity can be improved.

The card reader activation device in the embodiment of the present application can be an electronic device or a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices other than a terminal. Exemplarily, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device, a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/virtual reality (virtual reality, VR) device, a robot, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc. It can also be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., and the embodiment of the present application does not make specific limitations.

The card reader activation device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

The card reader activation device provided in the embodiment of the present application can implement each process implemented by the method embodiment of FIG. 2 , and will not be described again here to avoid repetition.

Optionally, as shown in Figure 4, an embodiment of the present application further provides an electronic device 400, including a processor 401 and a memory 402, wherein the memory 402 stores programs or instructions that can be executed on the processor 401, and when the program or instructions are executed by the processor 401, the various steps of the above-mentioned card reader activation method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, they are not repeated here.

It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

The electronic device 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio Components include an output unit 503 , an input unit 504 , a sensor 505 , a display unit 506 , a user input unit 507 , an interface unit 508 , a memory 509 , and a processor 510 .

Those skilled in the art will appreciate that the electronic device 500 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 510 through a power management system, so that the power management system can manage charging, discharging, and power consumption. The electronic device structure shown in FIG5 does not constitute a limitation on the electronic device, and the electronic device may include more or fewer components than shown, or combine certain components, or arrange components differently, which will not be described in detail here.

The radio frequency unit 501 is used to detect whether a first radio frequency signal is received, where the first radio frequency signal is a radio frequency signal emitted by the card reader in a low power consumption card detection LPCD state;

The processor 510 is configured to generate a second radio frequency signal when the first radio frequency signal is received;

The RF unit 501 is used to transmit the second RF signal, which is used to change the oscillation voltage corresponding to the first RF signal, so that the card reader exits the LPCD state and enters the activation state when detecting that the change value of the oscillation voltage is greater than a preset change threshold.

Optionally, the radio frequency unit 501 is further configured to transmit the multiple radio frequency sub-signals in sequence in different time periods, wherein one radio frequency sub-signal is transmitted in one time period.

Optionally, the radio frequency unit 501 is further configured to alternately transmit the first radio frequency sub-signal and the second radio frequency sub-signal.

Optionally, the processor 510 is further configured to obtain a first phase corresponding to the first radio frequency signal;

The processor 510 is further configured to determine, based on the first phase, a second phase whose phase difference with the first phase is greater than the preset threshold;

The processor 510 is further configured to generate the first radio frequency sub-signal having the first phase and the second radio frequency sub-signal having the second phase.

Therefore, by generating a first RF sub-signal having the same phase as the first RF signal and a second RF sub-signal having a phase difference with the first RF signal greater than a preset threshold, the degree of change in the oscillating voltage sensed by the card reader can be made greater, thereby making it easier to activate the card reader and improving the card detection sensitivity of the card reader.

It should be understood that in the embodiment of the present application, the input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042, and the graphics processor 5041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 507 includes a touch panel 5071 and at least one of other input devices 5072. The touch panel 5071 is also called a touch screen. The touch panel 5071 may include two parts: a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

The memory 509 can be used to store software programs and various data. The memory 509 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 509 may include a volatile memory or a non-volatile memory, or the memory 509 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (DRAM), or a volatile random access memory (VRAM). The memory 509 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 510.

An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned card reader activation method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned card reader activation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the above-mentioned card reader activation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be noted that, in this article, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, Articles or devices include not only those elements, but also other elements that are not explicitly listed, or also include elements that are inherent to such processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device that includes the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

A card reader activation method, comprising:

Detecting whether a first radio frequency signal is received, where the first radio frequency signal is a radio frequency signal emitted by the card reader in a low power consumption card detection LPCD state;

generating a second radio frequency signal upon receiving the first radio frequency signal;

The second radio frequency signal is transmitted, and the second radio frequency signal is used to change the oscillation voltage corresponding to the first radio frequency signal, so that the card reader exits the LPCD state and enters the activation state when detecting that the change value of the oscillation voltage is greater than a preset change threshold.
The method according to claim 1, wherein the second radio frequency signal includes a plurality of radio frequency sub-signals, and different radio frequency sub-signals correspond to different phases;

The transmitting the second radio frequency signal comprises:

The multiple radio frequency sub-signals are transmitted in sequence in different time periods, respectively, wherein one radio frequency sub-signal is correspondingly transmitted in one time period.
The method according to claim 2, wherein the plurality of radio frequency sub-signals include a first radio frequency sub-signal and a second radio frequency sub-signal, and a phase difference between the first radio frequency sub-signal and the second radio frequency sub-signal is greater than a preset threshold;

The transmitting the plurality of radio frequency sub-signals in sequence in different time periods respectively includes:

The first radio frequency sub-signal and the second radio frequency sub-signal are transmitted alternately.
The method according to claim 3, wherein the phase difference between the first RF sub-signal and the second RF sub-signal is 180°.
The method according to claim 3, wherein generating the second radio frequency signal comprises:

Acquire a first phase corresponding to the first radio frequency signal;

Determine, according to the first phase, a second phase whose phase difference with the first phase is greater than the preset threshold;

The first radio frequency sub-signal having the first phase and the second radio frequency sub-signal having the second phase are generated.
A card reader activation device, comprising:

The signal detection module is used to detect whether a first radio frequency signal is received. The signal is the radio frequency signal emitted by the card reader in the low power consumption card detection LPCD state;

a signal generating module, configured to generate a second radio frequency signal upon receiving the first radio frequency signal;

The signal transmitting module is used to transmit the second radio frequency signal, and the second radio frequency signal is used to change the oscillation voltage corresponding to the first radio frequency signal, so that the card reader exits the LPCD state and enters the activation state when detecting that the change value of the oscillation voltage is greater than a preset change threshold.
The device according to claim 6, wherein the second radio frequency signal includes a plurality of radio frequency sub-signals, and different radio frequency sub-signals correspond to different phases;

The signal transmission module comprises:

The sub-signal transmitting submodule is used to transmit the multiple radio frequency sub-signals in sequence in different time periods, wherein one radio frequency sub-signal is correspondingly transmitted in one time period.
The device according to claim 7, wherein the plurality of radio frequency sub-signals include a first radio frequency sub-signal and a second radio frequency sub-signal, and a phase difference between the first radio frequency sub-signal and the second radio frequency sub-signal is greater than a preset threshold;

The sub-signal transmitting sub-module comprises:

The alternating transmitting unit is used to alternately transmit the first radio frequency sub-signal and the second radio frequency sub-signal.
The apparatus according to claim 8, wherein the phase difference between the first radio frequency sub-signal and the second radio frequency sub-signal is 180°.
The apparatus according to claim 8, wherein the signal generating module comprises:

A phase acquisition submodule, used to acquire a first phase corresponding to the first radio frequency signal;

a phase determination submodule, configured to determine, based on the first phase, a second phase whose phase difference with the first phase is greater than the preset threshold;

The sub-signal generating sub-module is configured to generate the first radio frequency sub-signal having the first phase and the second radio frequency sub-signal having the second phase.
An electronic device comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the card reader activation method as described in any one of claims 1 to 5 are implemented.
A readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the card reader activation method according to any one of claims 1 to 5 are implemented.
An electronic device, used to execute the steps of the card reader activation method as described in any one of claims 1 to 5.
A computer program product, wherein the computer program product is executed by at least one processor to implement the steps of the card reader activation method according to any one of claims 1 to 5.
A chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the card reader activation method according to any one of claims 1 to 5.