Structure reuse circuit, its control method, and mobile communication terminal

Abstract

The present application relates to the field of mobile communication terminals, and discloses a structure multiplexing circuit, a control method thereof, and a mobile communication terminal. The circuit includes: a positive wire and a negative wire, the two wires are arranged in a non-closed ring shape and nested; an LED array including a plurality of LED lights disposed between the two wires; an LED driving circuit respectively connected to the positive wire and the negative wire, which is used to output a positive DC voltage when light emission is required to drive the LED array to emit light; a matching circuit connected to the positive wire and / or the negative wire; a near-field communication controller connected to the matching circuit, which is used to perform signal impedance transformation through the matching circuit when near-field communication is required, and control the positive wire and / or the negative wire multiplexed as a loop antenna to receive or transmit signals. By integrating the light strip and the near-field communication loop antenna, a compact structure design of the mobile communication terminal can be achieved, saving the occupied space of components.

Description

Technical Field

[0001] The present application relates to the field of mobile communication terminals, and particularly to a structure multiplexing circuit, a control method thereof, and a mobile communication terminal. Background Art

[0002] Most existing mobile communication terminals support near-field communication solutions, such as NFC payment, etc. Among them, the near-field communication solution is a communication method implemented by using electromagnetic coupling within a short distance, and mainly uses a near-field communication control chip (NFCC, Near Field Communication Controller), a matching circuit, and a near-field communication antenna, etc. to implement. In addition, in a mobile communication terminal, sometimes it is also necessary to add a light strip to implement some functions, such as different types of message reminders, etc. Among them, the light strip is a strip-shaped light-emitting array composed of multiple light-emitting diodes (LEDs, Light-emitting diode) connected in series or in parallel, and mainly controls the voltage of the LED to realize the on / off state of the LED through a driving power supply.

[0003] In the current mobile communication terminal solutions, the near-field communication device and the light strip device are two separate components, which is not conducive to meeting the user requirements of the thin and light mobile communication terminals that are the current mainstream trend. In addition, if the light strip occupies a large area, the space reserved for the near-field communication antenna is very small, which will reduce the performance of the near-field communication antenna, etc. Summary of the Invention

[0004] In view of this, embodiments of the present application provide a structure multiplexing circuit and a mobile communication terminal.

[0005] In a first aspect, an embodiment of the present application provides a structure multiplexing circuit, including:

[0006] A positive electrode wire, in a non-closed ring shape;

[0007] A negative electrode wire, in a non-closed ring shape and nested with the positive electrode wire;

[0008] An LED array, including a plurality of LED lights disposed between the two wires, wherein the positive electrode and the negative electrode of each LED light are respectively connected to the positive electrode wire and the negative electrode wire;

[0009] An LED driving circuit, respectively connected to the positive electrode wire and the negative electrode wire, for outputting a positive DC voltage when light emission is required to drive the LED array to emit light;

[0010] A matching circuit, connected to the positive electrode wire and / or the negative electrode wire;

[0011] A near-field communication controller, connected to the matching circuit, is configured to perform signal impedance transformation through the matching circuit when near-field communication is required, and control the positive wire and / or the negative wire multiplexed as a loop antenna to receive or transmit signals.

[0012] In some embodiments, the matching circuit is connected to the positive wire or the negative wire through differential signal lines; wherein,

[0013] The matching circuit is connected to the connection end of the positive wire or the negative wire through the first signal line in the differential signal lines, and the connection end is connected to the LED driving circuit;

[0014] And, the matching circuit is correspondingly connected to the open end of the positive wire or the negative wire through the second signal line in the differential signal lines.

[0015] In some embodiments, the structure multiplexing circuit further includes:

[0016] An isolation capacitor pair, including a first and a second isolation capacitor disposed between the two types of wires;

[0017] Wherein, one end of the first isolation capacitor is connected to the connection end of the positive wire, and the other end of the first isolation capacitor is connected to the open end of the negative wire;

[0018] One end of the second isolation capacitor is connected to the open end of the positive wire, and the other end of the second isolation capacitor is connected to the connection end of the negative wire.

[0019] In some embodiments, the matching circuit is connected to the positive wire and the negative wire through differential signal lines, and the circuit further includes:

[0020] An isolation capacitor group, including a first to a fourth isolation capacitor disposed between the matching circuit and the two types of wires; wherein,

[0021] The matching circuit is connected to the connection ends of the positive wire and the negative wire respectively through the first signal line in the differential signal lines via the first isolation capacitor and the second isolation capacitor arranged in parallel, and the connection end is connected to the LED driving circuit;

[0022] And, the matching circuit is connected to the open ends of the positive wire and the negative wire respectively through the second signal line in the differential signal lines via the third isolation capacitor and the fourth isolation capacitor arranged in parallel.

[0023] In some embodiments, the matching circuit is connected to the connection end of the positive electrode wire or the negative electrode wire through a single-ended signal wire, and the connection end is connected to the LED driving circuit; the circuit further includes:

[0024] A converter, respectively connected to the near-field communication controller and the matching circuit, for converting differential signals and single-ended signals between the near-field communication controller and the matching circuit;

[0025] A grounding capacitor, correspondingly connected to the open end of the positive electrode wire or the negative electrode wire.

[0026] In some embodiments, both the positive electrode wire and the negative electrode wire include an extension section and an unclosed rectangle connected to the extension section; wherein,

[0027] The two extension sections are respectively used to connect the positive electrode wire and the negative electrode wire to the LED driving circuit, and the two unclosed rectangles are different in size and are arranged parallel to each other inside and outside.

[0028] In some embodiments, the positive electrode wire and the negative electrode wire are metal traces on a flexible or rigid printed circuit board.

[0029] In some embodiments, a ferromagnetic material is provided below the positive electrode wire and the negative electrode wire.

[0030] In a second aspect, an embodiment of the present application provides a circuit control method, which is applied to the above-mentioned structure multiplexing circuit, and the method includes:

[0031] When light emission is required, control the LED driving circuit to output a positive DC voltage to the positive electrode wire and the negative electrode wire to drive the LED array to emit light;

[0032] When near-field communication is required, according to the communication working mode, the near-field communication controller modulates the signal to be transmitted and performs signal impedance transformation through the matching circuit, and then transmits it to the positive electrode wire and the negative electrode wire for signal transmission, or the near-field communication controller demodulates the received signal to obtain communication information, wherein the received signal is received through the positive electrode wire and the negative electrode wire and undergoes signal impedance transformation through the matching circuit.

[0033] In a third aspect, an embodiment of the present application provides a mobile communication terminal, including: the above-mentioned structure multiplexing circuit.

[0034] The embodiments of the present application have the following beneficial effects:

[0035] The structure reuse circuit of the embodiment of the present application designs the positive wire and the negative wire as a non-closed ring structure arranged in a nested manner, and also arranges the LEDs in parallel between the parallel positive wire and negative wire to form an LED array. On the one hand, it forms a closed lighting loop with the LED driver, and on the other hand, it forms a near-field communication loop with the matching circuit and the near-field communication controller. This circuit structure can realize the co-integration design of the light strip and the near-field communication device, which is beneficial to the miniaturization of the mobile communication terminal and the compact design of the internal electronic circuit, etc. Brief Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0037] Figure 1 A schematic diagram showing the implementation solution of the light strip in the prior art;

[0038] Figure 2 A schematic diagram showing the implementation solution of the near-field communication device in the prior art;

[0039] Figure 3 A first schematic diagram showing the structure of the structure reuse circuit of the embodiment of the present application;

[0040] Figure 4 A schematic diagram showing a structure of the positive wire and the negative wire of the embodiment of the present application;

[0041] Figure 5 A second schematic diagram showing the structure of the structure reuse circuit of the embodiment of the present application;

[0042] Figure 6 Shows Figure 4 A schematic diagram showing the flow direction of the near-field communication signal of the circuit shown;

[0043] Figure 7 A third schematic diagram showing the structure of the structure reuse circuit of the embodiment of the present application;

[0044] Figure 8 A fourth schematic diagram showing the structure of the structure reuse circuit of the embodiment of the present application;

[0045] Figure 9 A flowchart showing a method for controlling the circuit of the embodiment of the present application.

[0046] Main Element Symbol Description:

[0047] 10 - Positive electrode wire; 20 - Negative electrode wire; 30 - LED array; 40 - LED drive circuit; 50 - Matching circuit; 60 - Near - field communication controller; 70 - Scale; 80 - Ferromagnetic material; L - Extension section. Detailed implementation mode

[0048] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0049] Generally, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0050] In the following text, the terms "including", "having" and their cognates that can be used in various embodiments of the present application are only intended to represent specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be construed as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or increasing the possibility of one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items. In addition, the terms "first", "second", "third", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0051] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the various embodiments of the present application belong. The terms (such as those defined in a commonly used dictionary) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or being overly formal, unless clearly defined in the various embodiments of the present application.

[0052] Next, some embodiments of the present application will be described in detail in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0053] In current mobile communication terminals, for the implementation of near - field communication solutions, such as Figure 1As shown, when transmitting a signal, the near field communication control chip converts the information to be transmitted into a modulated signal. Further, the modulated signal is transmitted to the ring-shaped near field communication antenna after being processed by a matching circuit, so that the near field communication antenna converts the modulated signal into a time-varying magnetic field and emits it outward. Similarly, when receiving an external signal, the near field communication antenna converts the external time-varying magnetic field into a received signal. Further, the received signal is transmitted to the near field communication control chip after being processed by the matching circuit, and the near field communication control chip demodulates the received signal to restore the modulated signal therein. For the implementation of the light strip, as Figure 2 shown, these LEDs are connected in series or in parallel to form a strip-shaped light-emitting array. When light emission is required, an LED driver is used to control the generation of a DC voltage difference between the positive and negative electrodes of the LED array. When the DC voltage at both ends exceeds the turn-on voltage of the LEDs, each LED can convert electrical energy into light energy and emit visible light.

[0054] In existing mobile communication terminals, the near field communication device and the light strip device are usually two separate components, which take up a large amount of space and are not conducive to the thin and compact design of the terminal. Based on this, the present application proposes a solution for a structure multiplexing circuit in which the light strip and the near field communication antenna share a body, so as to achieve the miniaturization of the mobile communication terminal and the compact design of the internal electronic circuit.

[0055] The following will describe the structure multiplexing circuit in conjunction with some specific embodiments.

[0056] Figure 3 shows a schematic structural diagram of the structure multiplexing circuit according to an embodiment of the present application.

[0057] Exemplarily, the structure multiplexing circuit includes a positive wire 10, a negative wire 20, an LED array 30, an LED driving circuit 40, a matching circuit 50, and a near field communication controller 60. Among them, the positive wire 10 and the negative wire 20 are both non-closed rings and are nested; the LED array 30 is composed of a plurality of LED lights disposed between the above-mentioned positive wire 10 and negative wire 20; the LED driving circuit 40 is respectively connected to the positive wire 10 and the negative wire 20 and is used to output a positive DC voltage when light emission is required to drive the LED array 30 to emit light. At the same time, in order to implement near field communication, the matching circuit 50 is connected to the positive wire 10 and / or the negative wire 20 and is also connected to the near field communication controller 60; the near field communication controller 60 is used to perform signal impedance transformation through the matching circuit 50 when near field communication is required, and control the positive wire 10 and / or the negative wire 20 multiplexed as a loop antenna to receive or transmit signals.

[0058] It can be understood that in the present application, the positive electrode wire 10 and the negative electrode wire 20 are designed as a nested non-closed ring structure, and are formed into a closed lighting loop with the LED driving circuit 40; at the same time, a closed-loop communication loop is also formed with the matching circuit 50 and the near-field communication controller 60, which can not only realize the function of the light strip, but also enable the above-mentioned positive electrode wire 10 and / or negative electrode wire 20 to be reused as a ring-shaped near-field communication antenna, so as to realize near-field communication and save the occupied space of the light strip and the near-field communication device in the mobile communication terminal.

[0059] In the present application, the positive electrode wire 10 and the negative electrode wire 20 are nested. Specifically, one wire is arranged outside and the other wire is arranged inside, and the ring-shaped regions of the two wires are arranged in parallel, as Figure 3 shown. Here, the positive electrode wire 10 is arranged outside and the negative electrode wire 20 is arranged inside, and vice versa.

[0060] In addition, in the present application, the positive electrode wire 10 and the negative electrode wire 20 are designed as non-closed rings to form a ring-shaped antenna structure. In one embodiment, as Figure 3 shown, exemplarily, both the positive electrode wire 10 and the negative electrode wire 20 include an extension section L and a non-closed rectangle (not shown in the figure) connected to the extension section L; wherein, the two extension sections L are respectively used to connect the positive electrode wire 10 and the negative electrode wire 20 to the LED driving circuit 40, and the sizes of the two non-closed rectangles are different and are arranged in parallel inside and outside. It can be understood that for the ring-shaped region, it can not only be designed as a rectangular structure, but also be designed as an elliptical shape, etc., as long as it is ensured that the local region for setting the LED lights is parallel in wiring.

[0061] For example, the positive electrode wire 10 and the negative electrode wire 20 can be metal traces on a flexible printed circuit board (FPC, Flexible Printed Circuit) or other substrates, such as a rigid printed circuit board, etc., and are not limited here either. As an alternative solution, as Figure 4 shown, a ferromagnetic material 80 is provided below the positive electrode wire 10 and the negative electrode wire 20. For example, ferromagnetic materials such as ferrite and nanocrystalline can be provided to shield the influence of the metal materials below the positive electrode wire 10 or the negative electrode wire 20 and improve the effective magnetic field strength generated when they are used as near-field communication ring antennas.

[0062] For this structure multiplexing circuit, with Figure 3Taking the shown structure as an example, specifically, the positive electrode wire 10 is connected to the positive electrode (+) output terminal of the LED driving circuit 40, and the negative electrode wire 20 is connected to the negative electrode (-) output terminal of the LED driving circuit 40. It should be noted that when connecting to the LED driving circuit 40, one end of the positive electrode wire 10 and the negative electrode wire 20 is connected thereto, and the other end is in an open-circuit state. Therefore, for the convenience of description, the end connected to the LED driving circuit 40 in these two wires is referred to as the connection end, and the other end is referred to as the open-circuit end. The anode of each LED in the LED array 30 is connected to the positive electrode wire 10, and the cathode of each LED is connected to the negative electrode wire 20. Optionally, the number and position intervals of these LEDs can be set according to actual needs. For example, they can be evenly distributed in a circular area, or can be set in an unequal-spacing manner, etc., which are not limited here.

[0063] In this application, the LED driving circuit 40 can generate a constant DC voltage between the positive electrode (+) output terminal and the negative electrode (-) output terminal. For example, the LED driving circuit 40 may include an LED driving chip, etc. When the lighting function needs to be realized, it is only necessary to control a forward DC voltage greater than the turn-on voltage of the LED to be generated between the positive electrode (+) output terminal and the negative electrode (-) output terminal of the LED driving circuit 40, so that each LED in the LED array 30 is turned on and emits light.

[0064] In this application, the near-field communication controller 60, as the main device for realizing the near-field communication function, can be used to convert the original signal with information into a modulated signal, and transmit it to the near-field communication antenna for emission through the matching circuit 50, and can also be used to demodulate the modulated signal received by the near-field communication antenna. For example, the near-field communication controller 60 may refer to a near-field communication control chip or module, etc., which are not limited here. The matching circuit 50 is used to match the output of the near-field communication controller 60 and the near-field communication antenna with their output impedances, so as to realize the maximum power transmission from the source end to the load of the two. For example, the matching circuit 50 may be composed of several capacitors, inductors, impedance transformers, etc., and can be specifically designed according to actual needs.

[0065] To realize the near-field communication function, the near-field communication controller 60 in the structure multiplexing circuit is connected to the matching circuit 50 through differential signal lines. On the premise of not affecting the normal use of the lighting function of the light strip, the connection method between the matching circuit 50 and the positive electrode wire 10 and the negative electrode wire 20 can be designed according to actual needs to form a single-turn near-field communication loop antenna. Among them, the differential signal lines can be metal traces on a printed circuit board (PCB) or other substrates, which are not limited here.

[0066] The following takes several specific connection methods as examples for illustration.

[0067] In one embodiment, the matching circuit 50 can be connected to the positive conductor 10 or the negative conductor 20 through a differential signal line, that is, connected to one of the conductors. Exemplarily, the matching circuit 50 is connected to the positive conductor 10 (e.g., Figure 3 At the same time, the matching circuit 50 is connected to the open end of the positive wire 10 or the negative wire 20 through the second signal line in the differential signal line.

[0068] It can be understood that the above corresponding connection means that if the first signal line in the differential signal line is connected to the connection end of the positive wire 10, then the second signal line is also connected to the open end of the positive wire 10, that is, the two ends of the same wire are connected.

[0069] Based on the above-mentioned single-turn antenna structure, as an optional solution, the structure multiplexing circuit can also realize AC conduction between the two wires by adding an isolation capacitor at the open end of each of the positive wire 10 and the negative wire 20. Since there are two isolation capacitors, they are called isolation capacitor pairs here. The setting of the isolation capacitor pair can, on the one hand, avoid the positive wire 10 and the negative wire 20 from being short-circuited when the LED driving circuit 40 generates a DC voltage, and on the other hand, enable the circuit to transmit the high-frequency high-tuned signal output by the near field communication controller 60.

[0070] Still taking the connection of the positive lead 10 as an example, Figure 5 As shown, specifically, the isolation capacitor pair includes a first isolation capacitor C11 and a second isolation capacitor C12, wherein one end of the first isolation capacitor C11 is connected to the connection end of the positive wire 10, and the other end of the first isolation capacitor C11 is connected to the open end of the negative wire 20; one end of the second isolation capacitor C12 is connected to the open end of the positive wire 10, and the other end of the second isolation capacitor C12 is connected to the connection end of the negative wire 20. The isolation capacitors C11 and C12 are connected to the connection end, which can be connected to a certain position in the extension section L of the wire, such as the end point far away from the LED drive circuit 40 or a certain node in the middle of the extension section L, etc., which is not limited here.

[0071] When the structure multiplexing circuit is used as a near - field communication device, when a signal needs to be transmitted, the near - field communication controller 60 can convert the information to be transmitted into a modulated signal. The modulated signal is transmitted to one end of the matching circuit 50 through a differential signal line. Then, after the matching circuit 50 performs impedance transformation on the modulated signal, it is transmitted to both ends of the positive electrode wire 10 and the negative electrode wire 20 through the differential signal line. At this time, the positive electrode wire 10 and the negative electrode wire 20 are multiplexed as a single - turn near - field communication loop antenna, which can convert the modulated signal into a time - varying magnetic field, thus realizing signal transmission. For example, the signal flow at a certain moment is as Figure 6 shown.

[0072] Similarly, when a signal needs to be received, the positive electrode wire 10 and the negative electrode wire 20 that form the near - field communication loop antenna convert the external time - varying magnetic field into a received signal, and then transmit it to the matching circuit 50 through the differential signal line. After the matching circuit 50 performs signal impedance transformation, it is transmitted to the near - field communication controller 60 through the differential signal line. Finally, the near - field communication controller 60 demodulates the received signal to obtain the required information.

[0073] In another embodiment, the matching circuit 50 can be connected to both the positive electrode wire 10 and the negative electrode wire 20 through the differential signal line. At this time, the structure multiplexing circuit further includes: an isolation capacitor bank connected in series in the differential signal line. Demonstratively, as Figure 7 shown, the isolation capacitor bank includes the first isolation capacitor C11 to the fourth isolation capacitor C14 provided between the matching circuit 50 and the two types of wires; wherein, the matching circuit 50 is connected to the connection ends of the positive electrode wire 10 and the negative electrode wire 20, that is, the end close to the LED driving circuit 40, through the first signal line in the differential signal line via the first isolation capacitor C11 and the second isolation capacitor C12 arranged in parallel; and, the matching circuit 50 is connected to the open ends of the positive electrode wire 10 and the negative electrode wire 20 through the second signal line in the differential signal line via the third isolation capacitor C13 and the fourth isolation capacitor C14 arranged in parallel.

[0074] In yet another embodiment, the matching circuit 50 can be connected to the connection end of the positive electrode wire 10 or the negative electrode wire 20 through a single - ended signal line. At this time, the structure multiplexing circuit further includes: a balun 70 and a grounding capacitor C GND , as Figure 8 shown. Specifically, the balun 70 is respectively connected to the near - field communication controller 60 and the matching circuit 50, and the grounding capacitor C GND is correspondingly connected to the open end of the positive electrode wire 10 or the negative electrode wire 20.

[0075] Among them, the balun 70, also known as a balanced-unbalanced converter, is used to convert differential signals and single-ended signals between the near-field communication controller 60 and the matching circuit 50. The above-mentioned grounding capacitor C GND refers to a blocking capacitor with one end connected to the open end of the positive wire 10 or the negative wire 20 and the other end connected to the ground.

[0076] For the above several structural designs, in the present application, the positive wire and the negative wire are designed to be a non-closed annular structure in a nested arrangement, and form a closed light-emitting loop with the LED driving circuit; at the same time, it also forms a closed-loop communication loop with the matching circuit 50 and the near-field communication controller 60, that is, the positive wire 10 and / or the negative wire 20 are shared with the near-field communication device through the light strip, so that the near-field communication device does not require an additional near-field communication loop antenna, realizing a compact design of the circuit and saving equipment costs, etc.

[0077] Figure 9 Fig. shows a flowchart of a circuit control method according to an embodiment of the present application. Exemplarily, the circuit control method is mainly applied to the structure multiplexing circuit of the above embodiment, and the method includes:

[0078] S110, when it is necessary to emit light, control the LED driving circuit 40 to output a positive DC voltage to the positive wire 10 and the negative wire 20 to drive the LED array 30 to emit light.

[0079] S120, when it is necessary to perform near-field communication, according to the communication working mode, cause the near-field communication controller 60 to modulate the signal to be transmitted and perform signal impedance transformation through the matching circuit 50, and then transmit it to the positive wire 10 and the negative wire 20 for signal transmission, or cause the near-field communication controller 60 to demodulate the received signal to obtain communication information, wherein the received signal is received through the positive wire 10 and / or the negative wire 20 and undergoes signal impedance transformation through the matching circuit 50.

[0080] Among them, the above-mentioned communication working mode includes a signal transmission mode and a signal reception mode. It can be understood that the circuit control method of this embodiment is mainly to control the structure multiplexing circuit to realize the light emission of the light strip or near-field communication, and its working principle will not be repeated here. In addition, the optional items regarding the structure multiplexing circuit in the above embodiment are equally applicable to this embodiment.

[0081] In addition, the present application also provides a mobile communication terminal. For example, convenient devices such as smart phones, tablets, and smart wearable objects (such as smart bracelets, watches, etc.) that support near-field communication functions and light-emitting indications. Exemplarily, the mobile communication terminal includes a central processing unit (i.e., CPU) and the above-mentioned structure multiplexing circuit that shares the light strip and the near-field communication antenna. Among them, the central processing unit can be used to control the structure multiplexing circuit to implement the function of the light strip emitting light and the near-field communication scheme according to actual needs.

[0082] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and structural diagrams in the accompanying drawings show the possible architectures, functions, and operations of the devices, methods, and computer program products according to multiple embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of the code, and the module, program segment, or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the block may occur in a different order from that marked in the accompanying drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the structural diagram and / or flowchart, as well as the combination of blocks in the structural diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0083] In addition, in each embodiment of the present application, each functional module or unit may be integrated together to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part.

[0084] If the above functions are implemented in the form of software function modules and sold or used as an independent product, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0085] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application.

Claims

1. A structure reuse circuit, characterized in that, Comprising: A positive electrode wire, in a non-closed loop shape; A negative electrode wire, in a non-closed loop shape and nested with the positive electrode wire; An LED array, including a plurality of LED lights disposed between the two wires. Among them, the positive and negative electrodes of each LED light are respectively connected to the positive electrode wire and the negative electrode wire; An LED driving circuit, connected to the positive electrode wire and the negative electrode wire respectively, for outputting a positive DC voltage when light emission is required to drive the LED array to emit light; A matching circuit, connected to the connection end of the positive electrode wire or the negative electrode wire through the first signal wire in the differential signal line, and correspondingly connected to the open end of the positive electrode wire or the negative electrode wire through the second signal wire in the differential signal line; wherein, the connection end is the end of the wire connected to the LED driving circuit, and the open end is the other end of the wire in a floating open state; A near-field communication controller, connected to the matching circuit, for performing signal impedance transformation through the matching circuit when near-field communication is required, and controlling the positive electrode wire and / or the negative electrode wire multiplexed as a loop antenna to receive or transmit signals.

2. The structure reuse circuit according to claim 1, wherein Further comprising: An isolation capacitor pair, including a first isolation capacitor and a second isolation capacitor disposed between the two wires; Among them, one end of the first isolation capacitor is connected to the connection end of the positive electrode wire, and the other end of the first isolation capacitor is connected to the open end of the negative electrode wire; One end of the second isolation capacitor is connected to the open end of the positive electrode wire, and the other end of the second isolation capacitor is connected to the connection end of the negative electrode wire.

3. The structure reuse circuit according to claim 1, characterized in that The matching circuit is connected to the positive electrode wire and the negative electrode wire through a differential signal line, and the circuit further includes: An isolation capacitor group, including a first to fourth isolation capacitor disposed between the matching circuit and the two wires; wherein, The matching circuit is connected to the connection ends of the positive electrode wire and the negative electrode wire through the first signal wire in the differential signal line via the first isolation capacitor and the second isolation capacitor arranged in parallel, and the connection end is connected to the LED driving circuit; And, the matching circuit is connected to the open ends of the positive electrode wire and the negative electrode wire through the second signal wire in the differential signal line via the third isolation capacitor and the fourth isolation capacitor arranged in parallel.

4. The structure reuse circuit according to claim 1, wherein The matching circuit is connected to the connection end of the positive electrode wire or the negative electrode wire through a single-ended signal line, and the connection end is connected to the LED driving circuit; the circuit further includes: A balun, connected to the near-field communication controller and the matching circuit respectively, for converting between differential signals and single-ended signals between the near-field communication controller and the matching circuit; A grounding capacitor, correspondingly connected to the open end of the positive electrode wire or the negative electrode wire.

5. The structure reuse circuit according to any one of claims 1 to 4, characterized in that Both the positive electrode wire and the negative electrode wire include an extension section and a non-closed rectangle connected to the extension section; wherein, The two extension sections are respectively used to connect the positive electrode wire and the negative electrode wire to the LED driving circuit, and the two non-closed rectangles are of different sizes and are arranged parallel to each other inside and outside.

6. The structure reuse circuit according to any one of claims 1 to 4, characterized in that, The positive electrode wire and the negative electrode wire are metal traces on a flexible or rigid printed circuit substrate.

7. The structure reuse circuit according to claim 6, wherein A ferromagnetic material is provided below the positive electrode wire and the negative electrode wire.

8. A circuit control method, characterized in that, Applied to the structure multiplexing circuit according to any one of claims 1 to 7, the method includes: When light emission is required, controlling the LED driving circuit to output a positive DC voltage to the positive electrode wire and the negative electrode wire to drive the LED array to emit light; When near-field communication is required, according to the communication working mode, enabling the near-field communication controller to modulate the signal to be transmitted and perform signal impedance transformation through the matching circuit, and then transmitting it to the positive electrode wire and the negative electrode wire for signal transmission, or enabling the near-field communication controller to demodulate the received signal to obtain communication information, wherein the received signal is received through the positive electrode wire and / or the negative electrode wire and undergoes signal impedance transformation through the matching circuit.

9. A mobile communication terminal, characterized in that, Comprising: The structure multiplexing circuit according to any one of claims 1 to 7.

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