LED display control device, display system and display control method

Abstract

The invention discloses an LED display control device, a display system and a display control method, and the device comprises a first signal processing module which is connected with a display unit, is also connected with a first signal processing module corresponding to a next display unit, and is used for providing a display data signal for the display unit to display, the display data signal is transmitted to the first signal processing module corresponding to the next display unit; and the second signal processing module is connected with the first signal processing module in parallel and is used for transmitting the display data signal to the first signal processing module corresponding to the next display unit when the first signal processing module is abnormal. According to the technical scheme, when the first signal processing module is abnormal, the second signal processing module continues to transmit data to the first signal processing module corresponding to the next display unit, and the stability of display data signal transmission is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of display screens, and specifically relates to an LED display control device, a display system, and a display control method. Background Art

[0002] In the LED (Light-Emitting Diode) display industry, "big screens" are often talked about. Hundreds or even thousands of areas, the shocking visual effects presented are very eye-catching. In the digital age, LED displays, as an important carrier of urban landscape and advertising, have spread to every corner of the city.

[0003] In the display technology of LED display screens, LED display screens are usually divided into multiple areas. The specific display content data of multiple areas are usually transmitted serially. If an abnormality occurs in a certain area during the data transmission process, resulting in data transmission interruption, either the entire LED display screen cannot display content normally, or only the screen area before the abnormal area can display content, while the screen area after the abnormal area cannot display content, resulting in poor stability of data transmission in the LED display screen.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The purpose of the present application is to provide an LED display control device, a display system and a display control method to improve the stability of display data signal transmission.

[0006] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0007] According to one aspect of an embodiment of the present application, an LED display control device is provided, wherein one LED display control device is provided corresponding to one display unit of an LED display screen, wherein the LED display screen includes a plurality of display units; the LED display control device includes:

[0008] A first signal processing module, connected to the display unit, and also connected to a first signal processing module corresponding to a next display unit, for providing a display data signal to the display unit for display, and transmitting the display data signal to the first signal processing module corresponding to the next display unit;

[0009] The second signal processing module is connected in parallel with the first signal processing module, and is used to transmit the display data signal to the first signal processing module corresponding to the next display unit when the first signal processing module is abnormal.

[0010] In one embodiment of the present application, the second signal processing module includes:

[0011] a chip selection unit, connected to the first signal processing module, and configured to generate a switch control signal according to a working state of the first signal processing module;

[0012] A switch unit is connected in parallel with the first signal processing module and is used to be turned on or off according to the switch control signal.

[0013] In one embodiment of the present application, the second signal processing module further includes a step-down unit, which is respectively connected to the chip selection unit and the switch unit to provide an operating voltage for the chip selection unit and the switch unit.

[0014] In one embodiment of the present application, the switch unit includes a first end, a second end and a control end, the first end is connected to one end of the first signal processing module, the second end is connected to the other end of the first signal processing module, and the control end is connected to the chip select unit.

[0015] In one embodiment of the present application, the LED display control device further includes a power supply module, and the power supply module is used to supply power to the first signal processing module.

[0016] In one embodiment of the present application, the chip select unit includes a first input terminal, a second input terminal and an output terminal, the first input terminal is connected to the first signal processing module, the second input terminal is connected to the power supply module, and the output terminal is connected to the switch unit. The chip select unit is used to generate the switch control signal according to the working status of the first signal processing module and the working status of the power supply module.

[0017] According to one aspect of an embodiment of the present application, there is provided an LED display system, comprising:

[0018] An LED display screen, comprising a plurality of display units;

[0019] Multiple LED display control devices are connected in series, one LED display control device is connected to one display unit, and the LED display control device is the LED display control device provided in any embodiment of the present application.

[0020] In one embodiment of the present application, the LED display system further comprises a display data receiving module, wherein the display data receiving module is respectively connected to a first LED display control device and a last LED display control device among the plurality of LED display control devices connected in series;

[0021] The display data receiving module is used to send the received display data signal to the first LED display control device, so that the display data signal is transmitted from the first LED display control device to the last LED display control device; or

[0022] The display data receiving module is used to send the received display data signal to the last LED display control device, so that the display data signal is transmitted from the last LED display control device to the first LED display control device.

[0023] According to one aspect of an embodiment of the present application, a LED display control method is provided, which is applied to the LED display control device provided in any embodiment of the present application, and the method includes:

[0024] Detecting the working state of a first signal processing module; the first signal processing module is used to transmit a display data signal;

[0025] If the working state of the first signal processing module is normal, a first switch control signal is generated, and the first switch control signal is used to control the second signal processing module to be disconnected;

[0026] If the working state of the first signal processing module is an abnormal state, a second switch control signal is generated, and the first switch control signal is used to control the second signal processing module to be turned on, so that the second signal processing module transmits the display data signal.

[0027] In one embodiment of the present application, the LED display control device further includes a power supply module, and the power supply module is used to supply power to the first signal processing module; the method further includes:

[0028] Detecting the working state of the first signal processing module and the working state of the power supply module;

[0029] Correspondingly, if the working state of the first signal processing module is a normal state, generating a first switch control signal includes: if the working state of the first signal processing module is a normal state, and the working state of the power supply module is a normal state, generating the first switch control signal;

[0030] Correspondingly, if the working state of the first signal processing module is an abnormal state, a second switch control signal is generated, including: if the working state of the first signal processing module is an abnormal state, or the working state of the power supply module is an abnormal state, the second switch control signal is generated.

[0031] In the technical solution provided in the embodiment of the present application, an LED display control device is set corresponding to a display unit of an LED display screen, and the LED display screen includes multiple display units; the LED display control device includes: a first signal processing module, connected to the display unit, and also connected to the first signal processing module corresponding to the next display unit, for providing a display data signal to the display unit for display, and transmitting the display data signal to the first signal processing module corresponding to the next display unit; a second signal processing module, connected in parallel with the first signal processing module, for transmitting the display data signal to the first signal processing module corresponding to the next display unit when the first signal processing module is abnormal. In this way, in the technical solution of the present application, under normal circumstances, the display data signal of each display unit is transmitted by the first signal processing module. In the case of an abnormality in the first signal processing module of the display unit, the transmission of the display data signal will not be interrupted, but will continue to be transmitted by the second signal processing module to the first signal processing module corresponding to the next display unit, so that the subsequent display unit can continue to display the content, thereby improving the stability of the transmission of the display data signal.

[0032] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 The figure schematically shows a schematic diagram of an LED display system in the conventional technology.

[0035] Figure 2 A schematic diagram of an LED display control device provided by an embodiment of the present application is schematically shown.

[0036] Figure 3 The structural block diagram of an LED display control device provided by an embodiment of the present application is schematically shown.

[0037] Figure 4The structural block diagram of an LED display system provided by an embodiment of the present application is schematically shown.

[0038] Figure 5 The structural block diagram of an LED display system provided by an embodiment of the present application is schematically shown.

[0039] Figure 6 A flow chart of an LED display control method provided by an embodiment of the present application is schematically shown.

[0040] Figure 7 A flow chart of an LED display control method provided by an embodiment of the present application is schematically shown.

[0041] Figure 8 A flow chart of an LED display control method provided by an embodiment of the present application is schematically shown. DETAILED DESCRIPTION

[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0043] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0044] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0045] Figure 1 The figure schematically shows a schematic diagram of an LED display system in the conventional technology.

[0046] like Figure 1As shown, the LED display system includes an LED display screen 110 and a signal transmission circuit 120, wherein the LED display screen 110 includes a plurality of display units 111, and the signal transmission circuit 120 includes a plurality of receiving cards 121, which are connected in series, and one receiving card 121 is set corresponding to one display unit 111. The specific display content is transmitted to the signal transmission circuit 120 in the form of a display data signal, and is first transmitted to the first receiving card 121 among the plurality of receiving cards 121 connected in series, and the first receiving card 121 obtains the content data required to be displayed by the first display unit 111 for display by the first display unit 111, and then continues to transmit other display data signals to the next receiving card 121, and the next receiving card 121 repeats the above operation, so that the display data signal is transmitted sequentially based on the plurality of receiving cards 121 connected in series until it is transmitted to the last receiving card 121.

[0047] If one or more of the multiple receiving cards 121 described above are abnormal, resulting in data transmission interruption, the following receiving cards 121 cannot receive the display data signal, and the corresponding display unit 111 cannot display the content. For example, if the third receiving card 121 is abnormal and cannot transmit the display data signal to the fourth receiving card 121, only the first display unit 111 and the second display unit 111 on the LED display screen 110 can display part of the content, and the other display units 111 cannot display the content. Obviously, under this system structure, the stability of the display data signal transmission is poor, which also leads to poor stability of the content displayed on the LED display screen.

[0048] Based on the above problems, the present application proposes an LED display control device to improve the stability of data signal transmission. The LED display control device provided by the present application is described in detail below in combination with a specific implementation method.

[0049] Figure 2 A schematic diagram of an LED display control device provided by an embodiment of the present application is schematically shown. The LED display control device can be applied to an LED display system including multiple display units. One display unit is equivalent to a partial display area in an LED display screen, and each display unit can display content independently.

[0050] like Figure 2As shown, the LED display control device 200 includes a first signal processing module 210 and a second signal processing module 220. The first signal processing module 210 is connected to the display unit 111 corresponding to the LED display control device 200, and is also connected to the first signal processing module 210 corresponding to the next display unit 111. Among them, multiple LED display control devices 200 corresponding to multiple display units 111 are connected in series, and the first signal processing module 210 corresponding to the next display unit 111 is the first signal processing module 210 in the next LED display control device 200 in the series circuit of the current LED display control device 200. The first signal processing module 210 is used to provide the display data signal to the display unit 111 for display, and transmit the display data signal to the first signal processing module 210 corresponding to the next display unit 111. The second signal processing module 220 is connected in parallel with the first signal processing module 210, and is used to transmit the display data signal to the first signal processing module 210 corresponding to the next display unit 111 when the first signal processing module 210 is abnormal.

[0051] In some cases, the second signal processing module 220 can be regarded as a bypass of the first signal processing module 210. When the first signal processing module 210 is normal, the bypass is disconnected, and the display data signal is transmitted through the first signal processing module 210; when the first signal processing module 210 is abnormal, the bypass is turned on, and the display data signal continues to be transmitted through the bypass. Therefore, when an abnormality occurs in the first signal processing module 210 corresponding to a display unit 111, it does not affect the operation of the normal first signal processing modules 210 corresponding to other display units 111, so that the display data signal can be transmitted more stably, thereby improving the stability of the data transmission link.

[0052] In one embodiment of the present application, the first signal processing module 210 is a receiving card, which is responsible for receiving the display data signal and converting it into image data that can be displayed on the LED display screen. The display data signal can be sent by other receiving cards or by an external data sending end.

[0053] In one embodiment of the present application, the second signal processing module 220 may be a switch circuit, which can adjust its own working state according to the working state of the first signal processing module 210. The working state of the first signal processing module 210 includes a normal state and an abnormal state, and the working state of the switch circuit includes an on state and an off state. When the working state of the first signal processing module 210 is a normal state, the working state of the switch circuit is adjusted to be off so that the display data signal is transmitted through the first signal processing module 210; when the working state of the first signal processing module 210 is an abnormal state, the working state of the switch circuit is adjusted to be on so that the display data signal is transmitted through the switch circuit.

[0054] In the technical solution provided in the embodiment of the present application, an LED display control device is set corresponding to a display unit of an LED display screen, and the LED display screen includes multiple display units; the LED display control device includes: a first signal processing module, connected to the display unit, and also connected to the first signal processing module corresponding to the next display unit, for providing a display data signal to the display unit for display, and transmitting the display data signal to the first signal processing module corresponding to the next display unit; a second signal processing module, connected in parallel with the first signal processing module, for transmitting the display data signal to the first signal processing module corresponding to the next display unit when the first signal processing module is abnormal. In this way, in the technical solution of the present application, under normal circumstances, the display data signal of each display unit is transmitted by the first signal processing module. In the case of an abnormality in the first signal processing module of the display unit, the transmission of the display data signal will not be interrupted, but will continue to be transmitted by the second signal processing module to the first signal processing module corresponding to the next display unit, so that the subsequent display unit can continue to display the content, thereby improving the stability of the transmission of the display data signal.

[0055] Figure 3 The structural block diagram of an LED display control device provided by an embodiment of the present application is schematically shown. This embodiment is a further refinement of the above embodiment.

[0056] like Figure 3 As shown, the LED display control device 200 provided in the embodiment of the present application includes a first signal processing module 210 and a second signal processing module 220, wherein the specific structure and function of the first signal processing module 210 are the same as those in the aforementioned embodiment and will not be repeated here.

[0057] The second signal processing module 220 includes a chip selection unit 221 and a switch unit 222, wherein the chip selection unit 221 is connected to the first signal processing module 210, and is used to generate a switch control signal according to the working state of the first signal processing module 210. The switch unit 222 is connected in parallel with the first signal processing module 210, and is used to be turned on or off according to the switch control signal. In this embodiment, the working state of the first signal processing module 210 includes a normal state and an abnormal state. When the working state of the first signal processing module 210 is a normal state, the chip selection unit 221 generates a first switch control signal (such as a high level signal), and the switch unit 222 is turned off according to the first switch control signal, and the display data signal is transmitted through the first signal processing module 210; when the working state of the first signal processing module 210 is an abnormal state, the chip selection unit 221 generates a second switch control signal (such as a low level signal), and the switch unit 222 is turned on according to the second switch control signal, so that the display data signal is transmitted through the switch unit 222.

[0058] In one embodiment of the present application, Figure 3 As shown, the switch unit 222 includes a first terminal 1, a second terminal 2 and a control terminal 3, the first terminal 1 is connected to one end of the first signal processing module 210, the second terminal 2 is connected to the other end of the first signal processing module 210, and the control terminal 3 is connected to the chip selection unit 221. In this way, the control terminal 3 controls the connection state of the first terminal 1 and the second terminal 2 according to the switch control signal generated by the chip selection unit 221. If the first terminal 1 and the second terminal 2 are connected, it means that the switch unit 222 is turned on; if the first terminal 1 and the second terminal 2 are disconnected, it means that the switch unit 222 is turned off.

[0059] In one embodiment of the present application, the switch unit 222 can be a device that can realize the switching function, such as a triode, an IJBT tube (Insulate-Gate Bipolar Transistor), a MOS tube (Metal-Oxide-Semiconductor Field-Effect Transistor), or a switching circuit composed of one or more of these devices and other circuit elements (such as resistors, capacitors, etc.).

[0060] In one embodiment of the present application, Figure 3As shown, the second signal processing module also includes a step-down unit 223, which is connected to the chip selection unit 221 and the switch unit 222 respectively, and is used to provide a working voltage for the chip selection unit 221 and the switch unit 222. The step-down unit 223 is connected to the line for transmitting the display data signal, and the line can synchronously transmit a higher voltage. After the step-down unit 223 steps down the higher voltage, it obtains a lower working voltage, and the chip selection unit 221 and the switch unit 222 are powered by the working voltage, so that the chip selection unit 221 and the switch unit 222 can work. For example, the voltage provided in the display data signal transmission line (here, the network signal power supply and data transmission integration mode is used, so the display data signal transmission line can include a power supply voltage) is a direct current 48V (DC 48V), and the step-down unit 223 steps down the voltage to obtain a direct current 5V (DC 5V) voltage, and the DC 5V voltage can be used to power the chip selection unit 221 and the switch unit 222.

[0061] In one embodiment of the present application, Figure 3 As shown, the LED display control device also includes a power module 230, and the power module 230 is used to power the first signal processing module 210. In some cases, the first signal processing module 210 is on a driver board in the LED display system, and the power module 230 is used to power the driver board. The driver board is a component in the LED display system that is responsible for converting the image data of the receiving card into a control signal of the LED lamp bead. In some cases, the power module 230 can also power the display unit 111.

[0062] In one embodiment of the present application, Figure 3As shown, the chip selection unit 221 includes a first input terminal a, a second input terminal b and an output terminal c, the first input terminal a is connected to the first signal processing module 210, the second input terminal b is connected to the power module 230, and the output terminal c is connected to the switch unit 222. In this structure, the chip selection unit 221 can generate a switch control signal in combination with the working state of the first signal processing module 210 and the working state of the power module 230. In this embodiment, the working state of the power module 230 also includes a normal state and an abnormal state. When the working state of the power module 230 is a normal state, it means that the power module 230 can normally supply power to the first signal processing module 210, and the first signal processing module 210 can work based on the supply voltage. When the working state of the power module 230 is an abnormal state, it means that the power module 230 cannot supply power to the first signal processing module 210, so at this time, even if there is no abnormal problem, the first signal processing module 210 cannot continue to work. Therefore, the generation process of the switch control signal is specifically as follows: when the working state of the first signal processing module 210 is normal and the working state of the power module 230 is normal, the chip selection unit 221 generates a first switch control signal (such as a high level signal), and the switch unit 222 is cut off according to the first switch control signal, and the display data signal is transmitted through the first signal processing module 210; and for other working states of the first signal processing module 210 and the power module 230 (including the first signal processing module 210 is normal but the power module 230 is abnormal, the first signal processing module 210 is abnormal but the power module 230 is normal, and the first signal processing module 210 is abnormal but the power module 230 is abnormal), the chip selection unit 221 generates a second switch control signal (such as a low level signal), and the switch unit 222 is turned on according to the second switch control signal, so that the display data signal is transmitted through the switch unit 222.

[0063] In one embodiment of the present application, the chip selection unit 221 may be configured in the form of an AND gate integrated circuit, and the corresponding AND gate integrated circuit truth table may be expressed as follows:

[0064] First signal X1 Power signal X2 Output signal Y 1 1 1 0 1 0 1 0 0 0 0 0

[0065] The first signal X1 indicates the working state of the first signal processing module 210. When the first signal X1=1, it indicates that the first signal processing module 210 is in a normal state. When the first signal X1=0, it indicates that the first signal processing module 210 is in an abnormal state. The power signal X2 indicates the working state of the power module 230. When the power signal X2=1, it indicates that the power module 230 is in a normal state. When the power signal X2=0, it indicates that the power module 230 is in an abnormal state. The output signal Y indicates the switch control signal output by the chip selection unit 221. When the output signal Y=1, it indicates that the chip selection unit 221 outputs the first switch control signal (such as a high level signal). When the output signal Y=0, it indicates that the chip selection unit 221 outputs the second switch control signal (such as a low level signal).

[0066] In the technical solution provided in the embodiment of the present application, the working status of the first signal processing module 210 and the power module 230 can be simultaneously known through the chip selection unit 221. When any of the modules is abnormal, it indicates that the normal data transmission link of the display data signal is abnormal. At this time, the chip selection unit 221 controls the switch unit 222 to be turned on, so that the display data signal is transmitted through the switch unit 222. In this way, the technical solution of the present application can not only solve the influence of the abnormality of the first signal processing module 210 on data transmission, but also solve the influence of the abnormality of the power module 230 on data transmission, thereby further improving the stability of data transmission.

[0067] Figure 4 The structure block diagram of the LED display system provided by one embodiment of the present application is schematically shown. Figure 4 As shown, the LED display system includes an LED display screen 110 and an LED display control device 200, wherein the LED display screen 110 includes multiple display units 111, the number of LED display control devices 200 is multiple, the multiple LED display control devices 200 are connected in series, one LED display control device 200 is connected to one display unit 111, and the LED display control device 200 is the LED display control device 200 provided in any embodiment of the present application.

[0068] like Figure 4As shown, each LED display control device 200 includes a first signal processing module 210 and a second signal processing module 220, which are connected in parallel. A plurality of LED display control devices 200 connected in series form a data transmission link. Under normal circumstances, the second signal processing module 220 is disconnected, and the display data signal required by the display unit 111 is transmitted in the data transmission link through the first signal processing module 210; when an abnormality occurs in the first signal processing module 210 corresponding to a certain display unit 111, the second signal processing module 220 is turned on, and the display data signal continues to be transmitted in the data transmission link through the second signal processing module 220, so as not to affect the subsequent display of the content of the display unit 111.

[0069] For example, Figure 4 In the LED display system shown, it is assumed that the first two first signal processing modules 210 are normal, but the third first signal processing module 210 is abnormal and cannot transmit the display data signal to the fourth first signal processing module 210. At this time, the third second signal processing module 220 corresponding to the third first signal processing module 210 is turned on, then the display data signal is output by the second first signal processing module 210, and transmitted to the fourth first signal processing module 210 through the third second signal processing module 220, so that the fourth display unit 111 and subsequent display units 111 can display content normally. In this way, based on the display effect of each display unit 111 in the LED display screen 110, it is possible to quickly determine which display unit 111 has a problem in the circuit structure, that is, the fault position can be quickly located. For example, in the final display effect, only the third display unit 111 does not display content (for example, it is in a black screen state), and the remaining display units 111 can display content, so it can be determined that the circuit structure of the third display unit 111 has a problem.

[0070] In the LED display system provided in the embodiment of the present application, under normal circumstances, the display data signal of each display unit is transmitted by the first signal processing module. When an abnormality occurs in one or more display units, the transmission of the display data signal will not be interrupted, but will continue to be transmitted by the second signal processing module to the next signal processing module, so that subsequent display units can continue to display content, thereby improving the stability of display data signal transmission in the LED display system, accelerating the efficiency of locating the abnormal first signal processing module, and at the same time reducing the impact of a single display unit on the content displayed on the entire display screen, thereby improving display fault tolerance.

[0071] Figure 5 The structural block diagram of an LED display system provided by an embodiment of the present application is schematically shown. This embodiment is a further refinement of the above embodiment.

[0072] like Figure 5 As shown, the LED display system includes an LED display screen ( Figure 5 ), an LED display control device 200 and a display data receiving module 300, wherein the LED display screen includes a plurality of display units ( Figure 5 (not shown), there are multiple LED display control devices 200, multiple LED display control devices 200 are connected in series, one LED display control device 200 is connected to one display unit, and the LED display control device 200 is the LED display control device 200 provided in any embodiment of the present application. Figure 5 Only a part of the LED display control device 200 is shown in the figure. The structure and function of the multiple LED display control devices 200 corresponding to the entire LED display screen have been explained in the above embodiments and will not be repeated here.

[0073] like Figure 5 As shown, the display data receiving module 300 is also called the screen master, which is connected to the first LED display control device 200 and the last LED display control device 200 in the plurality of LED display control devices 200 connected in series, respectively ( Figure 5 Only one of the LED display control devices 200 is shown connected). In this embodiment, the display data signal can be bidirectionally transmitted in the LED display system, that is, the display data receiving module 300 can send the received display data signal to the first LED display control device 200, so that the display data signal is transmitted from the first LED display control device 200 to the last LED display control device 200 (referred to as forward transmission, such as Figure 4 As shown, the display data signal is input from the first LED display control device 200); the display data receiving module 300 may also send the received display data signal to the last LED display control device 200, so that the display data signal is transmitted from the last LED display control device 200 to the first LED display control device 200 (referred to as reverse transmission, such as Figure 4 As shown, the display data signal is input from the last LED display control device 200). In a specific content display process, the two data transmission modes are selected, that is, display is performed either through forward transmission or through reverse transmission. The specific transmission mode can be adaptively configured by the LED display system or configured by the user.

[0074] In one embodiment of the present application, Figure 5As shown, the LED display system further includes a power switch module 400, which is connected between the AC power supply AC and the power module 230 in the LED display control device 200. The power module 230 is used to power the first signal processing module 210 in the LED display control device. For details, please refer to the description in the above embodiment. When the power switch module 400 is turned on, the AC power supply AC can be connected to the power modules 230 in each LED display control device 200 to power or charge the power modules 230; when the power switch module 400 is turned off, the AC power supply AC is disconnected from each power module 230.

[0075] Figure 6 The flowchart of the LED display control method provided by an embodiment of the present application is schematically shown. The method can be applied to the LED display control device provided by the embodiment of the present application, and can also be implemented by the LED display system, for example, by the screen master control in the LED display system. Figure 6 As shown, the method includes steps 610 to 630, which are specifically as follows:

[0076] Step 610, detecting the working state of the first signal processing module; the first signal processing module is used to transmit the display data signal.

[0077] Step 620: If the working state of the first signal processing module is normal, a first switch control signal is generated, and the first switch control signal is used to control the second signal processing module to disconnect.

[0078] Step 630: If the working state of the first signal processing module is an abnormal state, a second switch control signal is generated, and the first switch control signal is used to control the second signal processing module to be turned on so that the second signal processing module transmits a display data signal.

[0079] The specific implementation process of each of the above steps has been described in the embodiment of the corresponding LED display control device, and will not be repeated here.

[0080] The LED display control method provided in the embodiment of the present application can control the second signal processing module to be turned on when the working state of the first signal processing module is an abnormal state, so that the second signal processing module transmits a display data signal, thereby avoiding the interruption of the display data signal transmission caused by the abnormality of the first signal processing module, thereby improving the stability of the display data signal transmission.

[0081] Figure 7 The flowchart of the LED display control method provided by one embodiment of the present application is schematically shown. This embodiment is a further optimization of the above-mentioned embodiment. Figure 7 As shown, the method includes steps 710 to 730, which are specifically as follows:

[0082] Step 710: Detect the working status of the first signal processing module and the working status of the power supply module;

[0083] Step 720: If the working state of the first signal processing module is normal and the working state of the power supply module is normal, a first switch control signal is generated; the first switch control signal is used to control the second signal processing module to disconnect;

[0084] Step 730: If the working state of the first signal processing module is abnormal, or the working state of the power module is abnormal, generate a second switch control signal to enable the second signal processing module to transmit the display data signal.

[0085] The specific implementation process of each of the above steps has been described in the embodiment of the corresponding LED display control device, and will not be repeated here.

[0086] The following is a specific example to illustrate the implementation process of the LED display control method provided in the embodiment of the present application. In this embodiment, the first signal processing module is a receiving card, the working state of the first signal processing module is a receiving card signal, the working state of the power module is a power signal, and the second signal processing module is recorded as a parallel module (which is connected in parallel with the receiving card). In actual applications, the various components included in the LED display control device (such as a receiving card, a parallel module, a power module, etc.) can be encapsulated in one device, which can be called a display box.

[0087] like Figure 8 As shown, the LED display control method provided by this embodiment includes the following steps:

[0088] S1. The parallel module identifies whether the power signal and receiving card signal are normal.

[0089] S2. When the power supply or receiving card signal is abnormal, the display data signal at the receiving card end is interrupted.

[0090] S3, the parallel module recognizes that the power signal or the receiving card signal is abnormal, and the display data signal at the parallel module end is connected.

[0091] S4. The display data signal is transmitted to the next cascade display cabinet through the parallel module of the abnormal display cabinet.

[0092] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application.

[0093] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An LED display control device, characterized in that: An LED display control device is provided corresponding to a display unit of an LED display screen, wherein the LED display screen includes a plurality of display units; the LED display control device includes: A first signal processing module, connected to the display unit, and also connected to a first signal processing module corresponding to a next display unit, for providing a display data signal to the display unit for display, and transmitting the display data signal to the first signal processing module corresponding to the next display unit; The second signal processing module is connected in parallel with the first signal processing module, and is used to transmit the display data signal to the first signal processing module corresponding to the next display unit when the first signal processing module is abnormal.

2. The LED display control device according to claim 1, characterized in that: The second signal processing module comprises: a chip selection unit, connected to the first signal processing module, and configured to generate a switch control signal according to a working state of the first signal processing module; A switch unit is connected in parallel with the first signal processing module and is used to be turned on or off according to the switch control signal.

3. The LED display control device according to claim 2, characterized in that: The second signal processing module further includes a step-down unit, which is connected to the chip selection unit and the switch unit respectively and is used to provide working voltage for the chip selection unit and the switch unit.

4. The LED display control device according to claim 2, characterized in that: The switch unit includes a first end, a second end and a control end, the first end is connected to one end of the first signal processing module, the second end is connected to the other end of the first signal processing module, and the control end is connected to the chip selection unit.

5. The LED display control device according to claim 2, characterized in that: The LED display control device further includes a power supply module, and the power supply module is used to supply power to the first signal processing module.

6. The LED display control device according to claim 5, characterized in that: The chip select unit includes a first input end, a second input end and an output end, the first input end is connected to the first signal processing module, the second input end is connected to the power supply module, and the output end is connected to the switch unit. The chip select unit is used to generate the switch control signal according to the working state of the first signal processing module and the working state of the power supply module.

7. An LED display system, characterized in that: include: An LED display screen, comprising a plurality of display units; A plurality of LED display control devices are connected in series, one of the LED display control devices is connected to one of the display units, and the LED display control device is the LED display control device according to any one of claims 1 to 6.

8. The LED display system according to claim 7, characterized in that: The LED display system further comprises a display data receiving module, wherein the display data receiving module is respectively connected to a first LED display control device and a last LED display control device among the plurality of LED display control devices connected in series; The display data receiving module is used to send the received display data signal to the first LED display control device, so that the display data signal is transmitted from the first LED display control device to the last LED display control device; or The display data receiving module is used to send the received display data signal to the last LED display control device, so that the display data signal is transmitted from the last LED display control device to the first LED display control device.

9. A LED display control method, characterized in that: Applied to the LED display control device according to claim 1, the method comprises: Detecting the working state of a first signal processing module; the first signal processing module is used to transmit a display data signal; If the working state of the first signal processing module is normal, a first switch control signal is generated, and the first switch control signal is used to control the second signal processing module to be disconnected; If the working state of the first signal processing module is an abnormal state, a second switch control signal is generated, and the first switch control signal is used to control the second signal processing module to be turned on, so that the second signal processing module transmits the display data signal.

10. The LED display control method according to claim 9, characterized in that: The LED display control device further includes a power supply module, and the power supply module is used to supply power to the first signal processing module; the method further includes: Detecting the working state of the first signal processing module and the working state of the power supply module; Correspondingly, if the working state of the first signal processing module is a normal state, generating a first switch control signal includes: if the working state of the first signal processing module is a normal state, and the working state of the power supply module is a normal state, generating the first switch control signal; Correspondingly, if the working state of the first signal processing module is an abnormal state, a second switch control signal is generated, including: if the working state of the first signal processing module is an abnormal state, or the working state of the power supply module is an abnormal state, the second switch control signal is generated.

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