Passive near-field communication device, method and apparatus

Abstract

A passive near-field communication device, method and apparatus. The device comprises a wake-up tuning coil, a communication antenna coil and an NFC chip, wherein a resonance point of the wake-up tuning coil is the same as a carrier frequency band of a card reading device; and the communication antenna coil is connected to the NFC chip in series and is tuned to the carrier frequency band of the card reading device.

Description

Passive near-field communication device, method and apparatus

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 27, 2023, with application number 2023116075473 and application name “A Passive Near-Field Communication Device, Method and Apparatus”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to a passive near-field communication device, method, and apparatus. Background Art

[0003] Currently, NFC (Near Field Communication) payment methods are mainly bus / subway payments and some bank card payments. On the device side, NFC mainly operates in active mode, identifying bus / subway cards, some bank cards, and simulated cards on mobile phones and deducting funds to complete offline payments. However, for small and micro businesses that do not have 24-hour power supply, even if battery power is used, there may be debit devices that run out of power. In order to achieve communication and complete payment in this situation, the debit device needs to use passive mode. In addition, some mobile phones are not compatible with the card simulation mode of independent systems. Taking these users into consideration, our debit devices also need to work in passive mode.

[0004] Therefore, how to enable NFC deduction devices to complete payments without power supply is a technical problem that needs to be solved urgently.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide a passive near-field communication device to at least solve the technical problem in the related art that it is difficult to realize the completion of payment by NFC deduction devices without power supply.

[0007] According to one aspect of the present disclosure, there is provided

[0008] A passive near-field communication device, comprising: a wake-up tuning coil, a communication antenna coil, and an NFC chip;

[0009] The wake-up tuning coil is a bare coil, and the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader;

[0010] The communication antenna coil is connected in series with the NFC chip and tuned to the carrier frequency band of the card reader device.

[0011] In an exemplary embodiment, the position of the wake-up tuning coil is determined based on the position of an NFC antenna included in the card reader device.

[0012] In an exemplary embodiment, the wake-up tuning coil includes: a first wake-up tuning coil;

[0013] The first wake-up tuning coil and the communication antenna coil are coplanar or parallel to each other in the plane where they are located, and the induced magnetic fields in the coils overlap.

[0014] In an exemplary embodiment, the first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device, and is configured to couple with an antenna in the middle or lower half of the card reader device.

[0015] In an exemplary embodiment, the first wake-up tuning coil is rectangular or oblate in shape, and is configured to couple with a rectangular or oblate antenna of the card reader device.

[0016] In an exemplary embodiment, the wake-up tuning coil includes: a second wake-up tuning coil;

[0017] The second wake-up tuning coil is located on the upper side of the passive near-field communication device and is used to couple with the antenna on the upper side of the card reader device.

[0018] In an exemplary embodiment, the second wake-up tuning coil is in a strip shape, and is configured to couple with a strip antenna on an upper side of the card reader device.

[0019] According to another aspect of the embodiments of the present disclosure, a passive near-field communication method is provided, characterized by comprising:

[0020] Receive the low-power card detection carrier of the card reader device through the wake-up tuning coil, where the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device;

[0021] When receiving the low-power card detection carrier of the card reader device, the wake-up tuning coil generates a wake-up induction magnetic field, and the induction magnetic field is used to release the low-power card detection mode of the card reader device;

[0022] Receive the full-power card detection carrier of the card reader device through the communication antenna coil, wherein the communication antenna coil is connected in series with an NFC chip and is tuned to the carrier frequency band of the card reader device;

[0023] In the case of receiving the full-power card detection carrier of the card reading device, the communication antenna coil generates a communication induction magnetic field and communicates with the card reading device based on the communication induction magnetic field.

[0024] In an exemplary embodiment, receiving a low-power card detection carrier of a card reader device by waking up a tuning coil includes:

[0025] The low-power card detection carrier of the card reader device is received through the first wake-up tuning coil. The first wake-up tuning coil and the communication antenna coil are coplanar or parallel to each other, and the induced magnetic fields in the coils overlap.

[0026] In an exemplary embodiment, the first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device, and is configured to couple with the antenna in the middle or lower half of the card reader device.

[0027] In an exemplary embodiment, the first wake-up tuning coil has the same shape as a rectangular or oblate circular antenna of the card reader device.

[0028] In an exemplary embodiment, receiving a low-power card detection carrier of a card reader device by waking up a tuning coil includes:

[0029] The low-power card detection carrier transmitted by the antenna on the upper side of the card reader is received through the second wake-up tuning coil, and the second wake-up tuning coil is located on the upper side of the passive near-field communication device.

[0030] In an exemplary embodiment, the second wake-up tuning coil has the same shape as the strip antenna on the upper side of the card reader device.

[0031] According to another aspect of the embodiments of the present disclosure, a passive near-field communication device is provided, characterized in that it includes:

[0032] A first receiving module is configured to receive a low-power card detection carrier of a card reader device through a wake-up tuning coil, wherein the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device;

[0033] a wake-up module, configured to generate a wake-up induction magnetic field by the wake-up tuning coil when receiving a low-power card detection carrier of the card reader device, wherein the induction magnetic field is used to release the low-power card detection mode of the card reader device;

[0034] A second receiving module is configured to receive a full-power card detection carrier of the card reader device through a communication antenna coil, wherein the communication antenna coil is connected in series with an NFC chip and is tuned to the carrier frequency band of the card reader device;

[0035] The communication module is used to generate a communication induction magnetic field by the communication antenna coil when receiving the full-power card detection carrier of the card reader device, and communicate with the card reader device based on the communication induction magnetic field.

[0036] In an exemplary embodiment, the first receiving module includes:

[0037] The first receiving unit is used to receive the low-power card detection carrier of the card reader device through a first wake-up tuning coil. The first wake-up tuning coil and the communication antenna coil are coplanar or parallel to each other, and the induced magnetic fields in the coils overlap.

[0038] In an exemplary embodiment, the first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device, and is configured to couple with the antenna in the middle or lower half of the card reader device.

[0039] In an exemplary embodiment, the first wake-up tuning coil has the same shape as a rectangular or oblate circular antenna of the card reader device.

[0040] In an exemplary embodiment, the first receiving module includes:

[0041] The second receiving unit is configured to receive the low-power card detection carrier transmitted by the antenna on the upper side of the card reader through a second wake-up tuning coil, wherein the second wake-up tuning coil is located on the upper side of the passive near-field communication device.

[0042] In an exemplary embodiment, the second wake-up tuning coil has the same shape as the strip antenna on the upper side of the card reader device.

[0043] According to another aspect of an embodiment of the present disclosure, a computer device is also provided, comprising: a processor suitable for implementing various instructions and a storage device, wherein the storage device stores multiple instructions suitable for being loaded by the processor and executing any one of the above-mentioned passive near-field communication methods.

[0044] According to another aspect of the embodiments of the present disclosure, there is also provided a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is used to execute any one of the above-mentioned passive near-field communication methods.

[0045] According to another aspect of the embodiments of the present disclosure, there is also provided a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any one of the above-mentioned passive near-field communication methods.

[0046] The technical solution of the present disclosure is further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The following figures are intended only to illustrate and explain the present disclosure and are not intended to limit the scope of the present disclosure.

[0048] FIG1 is a structural diagram of a passive near field communication device according to an embodiment of the present disclosure; and

[0049] FIG2 is a schematic diagram of a coil structure of a passive near-field communication device according to an optional embodiment of the present disclosure; and

[0050] FIG3 is a flow chart of a passive near field communication method according to an embodiment of the present disclosure; and

[0051] FIG4 is a structural diagram of a passive near field communication device according to an embodiment of the present disclosure; and

[0052] FIG5 is a schematic structural diagram of a computer device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0053] The present application will be further described in detail below through the accompanying drawings and examples, through which the features and advantages of the present application will become more clear and distinct.

[0054] The word "exemplary" is used exclusively herein to mean "serving as an example, example, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0055] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0056] In order to better illustrate the embodiments of the present invention, the professional terms involved in the embodiments of the present invention are explained as follows:

[0057] NFC: A short-range, high-frequency radio communication technology.

[0058] NFC active mode: In active mode, the NFC terminal can act as a reader, emitting a radio frequency field to identify and read / write information from passive NFC devices.

[0059] NFC passive mode (card emulation): At this time, the NFC-enabled terminal is simulated as a card, which only responds passively in the radio frequency field emitted by other devices and can read / write information.

[0060] LPCD (Low Power Card Detection) mode: To save power when detecting NFC slave devices, the phone will enter low power mode after a certain period of unlocking, and then enter LPCD mode when detecting the card.

[0061] Normal card detection mode: To improve NFC speed and success rate, the phone maintains full power card detection for a period of time after unlocking, also known as normal card detection mode. Both LPCD and normal detection modes use a 13.56MHz sine wave emitted by the phone, but with different transmission times and amplitudes, coupling energy through the coil.

[0062] In this embodiment, a passive near-field communication device is provided. FIG1 is a structural diagram of a passive near-field communication device according to an embodiment of the present disclosure. As shown in FIG1 , the passive near-field communication device includes:

[0063] Wake up the tuning coil and communication antenna coil.

[0064] The passive near field communication device also includes an NFC chip (not shown in FIG1 ). The NFC chip can receive instructions from a card reader through a communication antenna and perform read and write operations according to the instructions.

[0065] The wake-up tuning coil is a bare coil, and the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device.

[0066] The bare coil may be an LC oscillating circuit without an NFC chip in series. The card reader device may be a mobile phone with NFC functionality.

[0067] The communication antenna coil is connected to an NFC chip and tuned to the carrier frequency band of the card reader.

[0068] The resonance point of the wake-up tuning coil and the carrier frequency band of the card reader device may be 13.56 MHz.

[0069] The wake-up tuning coil is used to couple with the antenna of the card reader device when the antenna of the card reader device approaches, thereby releasing the low-power card detection mode of the card reader device.

[0070] After the low-power card checking mode of the above-mentioned card reader device is released, it can enter the full-power card checking mode.

[0071] The card reader device can be placed close to the wake-up tuning coil in a low-power card detection mode to induce the wake-up tuning coil to generate an induced magnetic field, thereby waking up the card reader device in a full-power card detection mode.

[0072] The communication antenna coil is used to communicate with the card reader device in the full-power card detection mode of the card reader device.

[0073] The communication antenna coil can generate load modulation on the communication antenna coil through the above-mentioned NFC chip, thereby completing communication with the above-mentioned card reading device.

[0074] In the disclosed embodiment, the wake-up tuning coil is a bare coil, and the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device; the communication antenna coil is connected in series with an NFC chip and tuned to the carrier frequency band of the card reader device; the wake-up tuning coil is used to couple with the antenna of the card reader device when the antenna of the card reader device is close to it, thereby releasing the low-power card detection mode of the card reader device; the communication antenna coil is used to communicate with the card reader device in the full-power card detection mode of the card reader device. This can solve the technical problem in the related art that the NFC deduction device cannot complete payment under no-power conditions. The card reader device in the low-power card detection mode is awakened by the wake-up tuning coil of the bare coil set in the passive near-field communication device, and then full-power communication is performed with the card reader device through the communication antenna coil, thereby completing payment under no-power conditions. At the same time, the coupling effect with the low-power mode card reader device is improved.

[0075] In an exemplary embodiment, the wake-up tuning coil includes: a first wake-up tuning coil.

[0076] The first wake-up tuning coil and the communication antenna coil are coplanar or parallel to each other in the plane where they are located, and the induced magnetic fields in the coils overlap.

[0077] Preferably, the first wake-up tuning coil and the communication antenna coil may be arranged in the passive near-field communication device in an embedded parallel and surrounding manner.

[0078] Through the above embodiment, the above-mentioned first wake-up tuning coil and the above-mentioned communication antenna coil are coplanar or parallel to each other in the plane, and the induced magnetic fields in the coils overlap, so that the passive near-field communication device can immediately communicate with the card reader device after waking up the above-mentioned card reader device. At the same time, the technical effect of saving space can also be achieved.

[0079] In an exemplary embodiment, the position of the wake-up tuning coil is determined based on the position of the NFC antenna included in the card reader device. In practice, the above-mentioned passive near-field communication device can be, for example, an NFC tag card (hereinafter referred to as an NFC card), and a mobile phone can be used as a card reader. Therefore, the position of the wake-up tuning coil in the NFC card can be set according to the position where the NFC antenna is placed in the mobile phone. According to the user's usage habits, the user usually puts the upper part of the mobile phone close to the NFC card when reading the NFC card through the mobile phone. According to this usage habit, for a mobile phone with an NFC antenna located on the upper side of the mobile phone, the wake-up tuning coil in the NFC card can be set on the upper side of the NFC card, and for a mobile phone with an NFC antenna located in the middle of the mobile phone, the wake-up tuning coil in the NFC card can be set in the middle or lower half of the NFC card. In order to make the above two types of mobile phones have better card reading effects, a wake-up tuning coil can be set on the upper side of the NFC card, and another wake-up tuning coil can be set in the middle or lower half of the NFC card.

[0080] By setting the wake-up tuning coil in the NFC card as described above, when the user brings the mobile phone close to the NFC card, the position of the wake-up tuning coil in the NFC card and the position of the NFC antenna in the mobile phone will be opposite to each other over a large area, making it easier for the NFC card to receive the electromagnetic signal in LPCD mode emitted by the mobile phone, and making it easier for the electromagnetic signal emitted by the NFC card based on the received electromagnetic signal to be received by the card reader, thereby increasing the probability of the card reader switching to normal card detection mode, and thus increasing the success rate of NFC recognition.

[0081] In an exemplary embodiment, the first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device, and is configured to couple with the antenna in the middle or lower half of the card reader device.

[0082] For example, the card reader device may be a mainstream Android phone. This type of card reader device usually has an antenna located in the middle or lower half of the device.

[0083] Through the above embodiment, the above-mentioned first wake-up tuning coil is located in the middle or lower half of the above-mentioned passive near-field communication device, and is used to couple with the antenna in the middle or lower half of the above-mentioned card reader device, thereby improving the convenience of coupling the passive near-field communication device with the mainstream card reader device.

[0084] In an exemplary embodiment, the first wake-up tuning coil is rectangular or oblate, and is configured to couple with the rectangular or oblate antenna of the card reader.

[0085] For example, the card reader device may be an Android phone. This type of card reader device usually has an antenna in a rectangular or oblate shape.

[0086] Through the above embodiment, the shape of the above first wake-up tuning coil is rectangular or oblate, which is used to couple with the rectangular or oblate antenna of the above card reader device, thereby improving the coupling effect between the passive near-field communication device and the mainstream card reader device.

[0087] In an exemplary embodiment, the wake-up tuning coil includes: a second wake-up tuning coil.

[0088] The second wake-up tuning coil is located on the upper side of the passive near-field communication device and is used to couple with the antenna on the upper side of the card reader device.

[0089] For example, the card reading device may be a mobile phone running an iOS system. This type of card reading device usually has an antenna disposed on the upper side of the device.

[0090] Through the above embodiment, the above second wake-up tuning coil is located on the upper side of the above passive near-field communication device, and is used to couple with the antenna on the upper side of the above card reader device, thereby improving the convenience of coupling the passive near-field communication device with the iOS system type card reader device.

[0091] In an exemplary embodiment, the second wake-up tuning coil is in a strip shape, and is used to couple with the strip antenna on the upper side of the card reader device.

[0092] For example, the card reader device may be a mobile phone running an iOS system. This type of card reader device usually has a strip-shaped antenna.

[0093] Through the above embodiment, the first wake-up tuning coil is shaped as a strip, which is used to couple with the strip antenna of the card reader device, thereby improving the coupling effect between the passive near-field communication device and the iOS system type card reader device.

[0094] FIG2 is a schematic diagram of the coil structure of a passive near-field communication device according to an optional embodiment of the present disclosure. As shown in FIG2 , the device includes: a first wake-up tuning coil 201 , a second wake-up tuning coil 202 and a communication antenna coil 203 .

[0095] The rectangular second wake-up tuning coil 202 and the communication antenna coil 203 are embedded and arranged in parallel in the lower half of the passive near-field communication device. The strip-shaped first wake-up tuning coil 201 is arranged on the upper side of the passive near-field communication device.

[0096] According to another aspect of an embodiment of the present disclosure, a passive near-field communication method is further provided. FIG3 is a flow chart of the passive near-field communication method according to an embodiment of the present disclosure. As shown in FIG3 , the method includes:

[0097] Step 302: Receive a low-power card detection carrier of a card reader device through a wake-up tuning coil. The resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device.

[0098] The bare coil may be an LC oscillating circuit without an NFC chip in series. The card reader device may be a mobile phone with NFC functionality.

[0099] Step 304: The wake-up tuning coil generates a wake-up induction magnetic field based on the low-power card detection carrier. The wake-up induction magnetic field is used to release the low-power card detection mode of the card reader device.

[0100] The resonance point of the wake-up tuning coil and the carrier frequency band of the card reader device can be 13.56 MHz. After the low-power card reading mode of the card reader device is released, it can enter the full-power card reading mode.

[0101] Step 306: Receive the full-power card detection carrier of the card reader device through the communication antenna coil, wherein the communication antenna coil is connected in series with an NFC chip and is tuned to the carrier frequency band of the card reader device.

[0102] The card reader device can be placed close to the wake-up tuning coil in a low-power card detection mode to induce the wake-up tuning coil to generate an induced magnetic field, thereby waking up the card reader device in a full-power card detection mode.

[0103] Step 308: The communication antenna coil generates a communication induction magnetic field in response to the full-power card detection carrier, and communicates with the card reading device based on the communication induction magnetic field.

[0104] The communication antenna coil can generate load modulation on the communication antenna coil through the above-mentioned NFC chip, thereby completing communication with the above-mentioned card reading device.

[0105] Specifically, the communication antenna coil provides a full-power card detection carrier signal including a read instruction to the NFC chip. The NFC chip responds to the read instruction to obtain the data stored in the NFC chip and load-modulates the communication antenna coil based on the data, thereby causing the communication antenna coil to generate a communication induced magnetic field. The card reader receives the data by receiving the communication induced magnetic field. In addition, referring to Figure 2, after the above-mentioned card reader enters the full-power card detection mode, if the card reader device is an iOS phone, the first wake-up tuning coil 201 can transmit signals between the card reader device's antenna and the communication antenna coil 203, thereby improving the communication effect.

[0106] Through steps 302 to 308, the wake-up tuning coil receives the low-power card detection carrier of the card reader device. The resonant point of the wake-up tuning coil is in the same frequency band as the carrier of the card reader device. Upon receiving the low-power card detection carrier of the card reader device, the wake-up tuning coil generates a wake-up induced magnetic field, which is used to deactivate the low-power card detection mode of the card reader device. The communication antenna coil receives the full-power card detection carrier of the card reader device. The communication antenna coil is serially connected to the NFC chip and tuned to the carrier frequency band of the card reader device. Upon receiving the full-power card detection carrier of the card reader device, the communication antenna coil generates a communication induced magnetic field and communicates with the card reader device based on the communication induced magnetic field. This solves the technical problem in related arts that NFC debit devices have difficulty completing payments in unpowered conditions. By waking up a card reader device in low-power card detection mode through the wake-up tuning coil of the bare coil provided in the passive near-field communication device, the communication antenna coil then communicates with the card reader device at full power, thereby enabling payment in unpowered conditions and improving coupling with the card reader device in low-power mode.

[0107] In an exemplary embodiment, receiving a low-power card detection carrier of a card reader device by waking up a tuning coil includes:

[0108] The low-power card detection carrier of the card reader device is received through the first wake-up tuning coil. The first wake-up tuning coil and the communication antenna coil are coplanar or parallel to each other, and the induced magnetic fields in the coils overlap.

[0109] Preferably, the first wake-up tuning coil and the communication antenna coil may be arranged in the passive near-field communication device in an embedded parallel and surrounding manner.

[0110] Through the above embodiment, the above-mentioned first wake-up tuning coil and the above-mentioned communication antenna coil are coplanar or parallel to each other in the plane, and the induced magnetic fields in the coils overlap, so that the passive near-field communication device can immediately communicate with the card reader device after waking up the above-mentioned card reader device. At the same time, the technical effect of saving space can also be achieved.

[0111] In an exemplary embodiment, the first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device, and is configured to couple with the antenna in the middle or lower half of the card reader device.

[0112] For example, the card reader device may be a mainstream Android phone. This type of card reader device usually has an antenna located in the middle or lower half of the device.

[0113] Through the above embodiment, the above-mentioned first wake-up tuning coil is located in the middle or lower half of the above-mentioned passive near-field communication device, and is used to couple with the antenna in the middle or lower half of the above-mentioned card reader device, thereby improving the convenience of coupling the passive near-field communication device with the mainstream card reader device.

[0114] In an exemplary embodiment, the first wake-up tuning coil has the same shape as the rectangular or oblate circular antenna of the card reader device.

[0115] For example, the card reader device may be an Android phone. This type of card reader device usually has an antenna in a rectangular or oblate shape.

[0116] Through the above embodiment, the shape of the above first wake-up tuning coil is rectangular or oblate, which is used to couple with the rectangular or oblate antenna of the above card reader device, thereby improving the coupling effect between the passive near-field communication device and the mainstream card reader device.

[0117] In an exemplary embodiment, receiving a low-power card detection carrier of a card reader device by waking up a tuning coil includes:

[0118] The low-power card detection carrier transmitted by the antenna on the upper side of the card reader is received through the second wake-up tuning coil, and the second wake-up tuning coil is located on the upper side of the passive near-field communication device.

[0119] For example, the card reading device may be a mobile phone running an iOS system. This type of card reading device usually has an antenna disposed on the upper side of the device.

[0120] Through the above embodiment, the above second wake-up tuning coil is located on the upper side of the above passive near-field communication device, and is used to couple with the antenna on the upper side of the above card reader device, thereby improving the convenience of coupling the passive near-field communication device with the iOS system type card reader device.

[0121] In an exemplary embodiment, the second wake-up tuning coil has the same shape as the strip antenna on the upper side of the card reader device.

[0122] For example, the card reader device may be a mobile phone running an iOS system. This type of card reader device usually has a strip-shaped antenna.

[0123] Through the above embodiment, the first wake-up tuning coil is shaped as a strip, which is used to couple with the strip antenna of the card reader device, thereby improving the coupling effect between the passive near-field communication device and the iOS system type card reader device.

[0124] According to another aspect of an embodiment of the present disclosure, a passive near-field communication device is further provided. FIG4 is a structural diagram of a passive near-field communication device according to an embodiment of the present disclosure. As shown in FIG4 , the passive near-field communication device includes:

[0125] The first receiving module 401 is configured to receive a low-power card detection carrier of a card reader device through a wake-up tuning coil. The resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device.

[0126] The bare coil may be an LC oscillating circuit without an NFC chip in series. The card reader device may be a mobile phone with NFC functionality.

[0127] The wake-up module 402 is configured to generate a wake-up induction magnetic field by the wake-up tuning coil upon receiving a low-power card detection carrier from the card reader device. The induction magnetic field is used to release the low-power card detection mode of the card reader device.

[0128] The resonance point of the wake-up tuning coil and the carrier frequency band of the card reader device can be 13.56 MHz. After the low-power card reading mode of the card reader device is released, it can enter the full-power card reading mode.

[0129] The second receiving module 403 is configured to receive the full-power card detection carrier of the card reader device through a communication antenna coil, wherein the communication antenna coil is connected in series with an NFC chip and is tuned to the carrier frequency band of the card reader device.

[0130] The card reader device can be placed close to the wake-up tuning coil in a low-power card detection mode to induce the wake-up tuning coil to generate an induced magnetic field, thereby waking up the card reader device in a full-power card detection mode.

[0131] The communication module 404 is configured to generate a communication induced magnetic field by the communication antenna coil upon receiving a full-power card detection carrier from the card reader device, and communicate with the card reader device based on the communication induced magnetic field.

[0132] The communication antenna coil can generate load modulation on the communication antenna coil through the above-mentioned NFC chip, thereby completing communication with the above-mentioned card reading device.

[0133] In the disclosed embodiment, the wake-up tuning coil is a bare coil, and the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device; the communication antenna coil is connected in series with an NFC chip and tuned to the carrier frequency band of the card reader device; the wake-up tuning coil is used to couple with the antenna of the card reader device when the antenna of the card reader device is close to it, thereby releasing the low-power card detection mode of the card reader device; the communication antenna coil is used to communicate with the card reader device in the full-power card detection mode of the card reader device. This can solve the technical problem in the related art that the NFC deduction device cannot complete payment under no-power conditions. The card reader device in the low-power card detection mode is awakened by the wake-up tuning coil of the bare coil set in the passive near-field communication device, and then full-power communication is performed with the card reader device through the communication antenna coil, thereby completing payment under no-power conditions. At the same time, the coupling effect with the low-power mode card reader device is improved.

[0134] In an exemplary embodiment, the first receiving module includes:

[0135] The first receiving unit is used to receive the low-power card detection carrier of the above-mentioned card reader device through the first wake-up tuning coil. The above-mentioned first wake-up tuning coil and the above-mentioned communication antenna coil are coplanar or parallel to each other in the plane, and the induced magnetic fields in the coils overlap.

[0136] Preferably, the first wake-up tuning coil and the communication antenna coil may be arranged in the passive near-field communication device in an embedded parallel and surrounding manner.

[0137] Through the above embodiment, the above-mentioned first wake-up tuning coil and the above-mentioned communication antenna coil are coplanar or parallel to each other in the plane, and the induced magnetic fields in the coils overlap, so that the passive near-field communication device can immediately communicate with the card reader device after waking up the above-mentioned card reader device. At the same time, the technical effect of saving space can also be achieved.

[0138] In an exemplary embodiment, the first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device, and is configured to couple with the antenna in the middle or lower half of the card reader device.

[0139] For example, the card reader device may be a mainstream Android phone. This type of card reader device usually has an antenna located in the middle or lower half of the device.

[0140] Through the above embodiment, the above-mentioned first wake-up tuning coil is located in the middle or lower half of the above-mentioned passive near-field communication device, and is used to couple with the antenna in the middle or lower half of the above-mentioned card reader device, thereby improving the convenience of coupling the passive near-field communication device with the mainstream card reader device.

[0141] In an exemplary embodiment, the first wake-up tuning coil has the same shape as the rectangular or oblate circular antenna of the card reader device.

[0142] For example, the card reader device may be an Android phone. This type of card reader device usually has an antenna in a rectangular or oblate shape.

[0143] Through the above embodiment, the shape of the above first wake-up tuning coil is rectangular or oblate, which is used to couple with the rectangular or oblate antenna of the above card reader device, thereby improving the coupling effect between the passive near-field communication device and the mainstream card reader device.

[0144] In an exemplary embodiment, the first receiving module includes:

[0145] The second receiving unit is used to receive the low-power card detection carrier sent by the antenna on the upper side of the card reader through the second wake-up tuning coil, and the second wake-up tuning coil is located on the upper side of the passive near-field communication device.

[0146] For example, the card reading device may be a mobile phone running an iOS system. This type of card reading device usually has an antenna disposed on the upper side of the device.

[0147] Through the above embodiment, the above second wake-up tuning coil is located on the upper side of the above passive near-field communication device, and is used to couple with the antenna on the upper side of the above card reader device, thereby improving the convenience of coupling the passive near-field communication device with the iOS system type card reader device.

[0148] In an exemplary embodiment, the second wake-up tuning coil has the same shape as the strip antenna on the upper side of the card reader device.

[0149] For example, the card reader device may be a mobile phone running an iOS system. This type of card reader device usually has a strip-shaped antenna.

[0150] Through the above embodiment, the first wake-up tuning coil is shaped as a strip, which is used to couple with the strip antenna of the card reader device, thereby improving the coupling effect between the passive near-field communication device and the iOS system type card reader device.

[0151] The present disclosure also provides a computer device. FIG5 is a schematic diagram of the computer device according to the present disclosure. The computer device can implement all steps of the passive near-field communication method in the above embodiment. The computer device specifically includes the following contents:

[0152] Processor (processor) 501 , memory (memory) 502 , communication interface (Communications Interface) 503 and communication bus 504 .

[0153] The processor 301, memory 302, and communication interface 503 communicate with each other via the communication bus 504. The communication interface 503 is used to implement information transmission between related devices.

[0154] The processor 501 is configured to call the computer program in the memory 502 , and the processor implements the passive near field communication method in the above embodiment when executing the computer program.

[0155] Optionally, in an embodiment, when the above computer program instructions are executed by a processor, the following steps are implemented:

[0156] Step S1: receiving a low-power card detection carrier of a card reader device through a wake-up tuning coil, wherein the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device.

[0157] Step S2: upon receiving the low-power card detection carrier of the card reader device, the wake-up tuning coil generates a wake-up induction magnetic field, and the induction magnetic field is used to release the low-power card detection mode of the card reader device.

[0158] Step S3: receiving the full-power card detection carrier of the card reader device through the communication antenna coil, wherein the communication antenna coil is connected in series with an NFC chip and is tuned to the carrier frequency band of the card reader device.

[0159] Step S4: upon receiving the full-power card detection carrier of the card reader device, the communication antenna coil generates a communication induction magnetic field, and communicates with the card reader device based on the communication induction magnetic field.

[0160] An embodiment of the present disclosure further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. In response to the computer program being executed by a processor, the operations of the above-mentioned passive near-field communication method are implemented.

[0161] The embodiments of the present disclosure further provide a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the passive near-field communication method.

[0162] Although the present disclosure provides the method operation steps as described above in the embodiments or flowcharts, more or fewer operation steps may be included based on conventional or non-creative work. The order of steps listed in the embodiments is only one way of executing the steps in many steps and does not represent the only execution order. When the actual device or client product is executed, it can be executed in the order shown in the embodiments or the drawings or in parallel (for example, in a parallel processor or multi-threaded processing room).

[0163] Those skilled in the art will appreciate that the embodiments of this specification may be provided as methods, devices (systems), or computer program products. Therefore, the embodiments of this specification may take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0164] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0165] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0166] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0167] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences from other embodiments. In particular, for system embodiments, since they are basically similar to method embodiments, the description is relatively simple. For relevant parts, refer to the partial description of the method embodiments. In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0168] It should be noted that, unless there is a conflict, the embodiments and features of the embodiments in this disclosure may be combined with each other. This disclosure is not limited to any single aspect, nor to any single embodiment, nor to any combination and / or permutation of these aspects and / or embodiments. Moreover, each aspect and / or embodiment of this disclosure may be used alone or in combination with one or more other aspects and / or embodiments thereof.

[0169] Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present disclosure and are not intended to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may be modified or some or all of the technical features thereof may be replaced with equivalents. These modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the various embodiments of the present disclosure and should be encompassed by the claims and specification of the present disclosure.

Claims

1. A passive near field communication device, characterized in that: include: Wake up the tuning coil, communication antenna coil and NFC chip; The wake-up tuning coil is a bare coil, and the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader; The NFC chip is connected in series in the communication antenna coil and is tuned to the carrier frequency band of the card reader device.

2. The method according to claim 1, wherein: The wake-up tuning coil is used to couple with the antenna of the card reader device when the antenna of the card reader device is close to release the low-power card detection mode of the card reader device; The communication antenna coil is used to communicate with the card reader device in the full-power card detection mode of the card reader device.

3. The method according to claim 1, wherein: The position of the wake-up tuning coil is determined based on the position of an NFC antenna included in the card reader device.

4. The passive near field communication device according to claim 1, characterized in that: The wake-up tuning coil includes: a first wake-up tuning coil, and the card reading device includes a first card reading device; The first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device, and is used to couple with the antenna in the middle or lower half of the first card reader device.

5. The passive near field communication device according to claim 4, characterized in that: The first wake-up tuning coil and the communication antenna coil are coplanar or parallel to each other, and the induced magnetic fields in the coils overlap.

6. The passive near field communication device according to claim 4, characterized in that: The first wake-up tuning coil is in a rectangular or oblate shape and is used to couple with the rectangular or oblate antenna of the card reader device.

7. The passive near field communication device according to claim 1 or 4, characterized in that: The wake-up tuning coil includes: a second wake-up tuning coil; the card reading device includes a second card reading device The second wake-up tuning coil is located on the upper side of the passive near-field communication device, and is used to couple with the antenna on the upper side of the second card reader device.

8. The passive near field communication device according to claim 7, characterized in that: The second wake-up tuning coil is in a strip shape and is used to couple with the strip antenna on the upper side of the card reader.

9. A passive near field communication method, characterized in that: include: The low-power card detection carrier of the card reader device is received through the wake-up tuning coil, wherein the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device; The wake-up tuning coil generates a wake-up induction magnetic field based on the low-power card detection carrier, and the wake-up induction magnetic field is used to release the low-power card detection mode of the card reader device; Receive the full-power card detection carrier of the card reader device through the communication antenna coil, wherein the communication antenna coil is connected in series with an NFC chip and is tuned to the carrier frequency band of the card reader device; The communication antenna coil generates a communication induction magnetic field in response to the full-power card detection carrier, and communicates with the card reading device based on the communication induction magnetic field.

10. The passive near field communication method according to claim 9, characterized in that: The card reading device includes a first card reading device, which receives a low-power card detection carrier of the card reading device by waking up the tuning coil, including: The low-power card detection carrier of the card reader device is received through the first wake-up tuning coil, and the first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device and is used to couple with the antenna in the middle or lower half of the first card reader device.

11. The passive near field communication method according to claim 10, characterized in that: The first wake-up tuning coil and the communication antenna coil are coplanar or parallel to each other, and the induced magnetic fields in the coils overlap.

12. The passive near field communication method according to claim 10 or 11, characterized in that: The first wake-up tuning coil has the same shape as the rectangular or flat circular antenna of the card reader device.

13. The passive near field communication method according to claim 9 or 10, characterized in that: The card reading device includes a second card reading device, which receives a low-power card detection carrier of the card reading device by waking up the tuning coil, including: The low-power card detection carrier transmitted by the antenna on the upper side of the second card reader is received through the second wake-up tuning coil, and the second wake-up tuning coil is located on the upper side of the passive near-field communication device.

14. The passive near field communication method according to claim 13, characterized in that: The second wake-up tuning coil has the same shape as the strip antenna on the upper side of the card reader.

15. A passive near field communication device, characterized in that: include: A first receiving module, used for receiving a low-power card detection carrier of a card reader device through a wake-up tuning coil, wherein the resonance point of the wake-up tuning coil is the same as the carrier frequency band of the card reader device; A wake-up module, configured to generate a wake-up induction magnetic field based on the low-power card detection carrier by the wake-up tuning coil, wherein the wake-up induction magnetic field is used to release the low-power card detection mode of the card reader device; A second receiving module is used to receive the full-power card detection carrier of the card reader device through a communication antenna coil, wherein the communication antenna coil is connected in series with an NFC chip and is tuned to the carrier frequency band of the card reader device; The communication module is used to generate a communication induction magnetic field by the communication antenna coil in response to the full-power card detection carrier, and communicate with the card reading device based on the communication induction magnetic field.

16. The passive near field communication device according to claim 15, characterized in that: The card reading device includes a first card reading device, and the first receiving module includes: The first receiving unit is used to receive the low-power card detection carrier of the card reader device through a first wake-up tuning coil, wherein the first wake-up tuning coil is located in the middle or lower half of the passive near-field communication device and is used to couple with the antenna in the middle or lower half of the first card reader device.

17. The passive near field communication device according to claim 16, characterized in that: The first wake-up tuning coil and the communication antenna coil are coplanar or parallel to each other, and the induced magnetic fields in the coils overlap.

18. The passive near field communication device according to claim 16 or 17, characterized in that: The first wake-up tuning coil has the same shape as the rectangular or flat circular antenna of the card reader device.

19. The passive near field communication device according to claim 15 or 16, characterized in that: The card reading device includes a second card reading device, and the first receiving module includes: The second receiving unit is used to receive the low-power card detection carrier sent by the antenna on the upper side of the second card reader through the second wake-up tuning coil, and the second wake-up tuning coil is located on the upper side of the passive near-field communication device.

20. The passive near field communication device according to claim 19, characterized in that: The second wake-up tuning coil has the same shape as the strip antenna on the upper side of the card reader.

21. A computer device, characterized in that: The computer device comprises: a processor suitable for implementing various instructions and a storage device, wherein the storage device stores a plurality of instructions, and the instructions are suitable for being loaded by the processor and executing the passive near field communication method according to any one of claims 9 to 14.

22. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is used to execute the passive near-field communication method according to any one of claims 9 to 14.

23. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the passive near field communication method according to any one of claims 9 to 14 is implemented.

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