Reconfigurable LED display screen and display method

Abstract

The invention provides a reconfigurable LED display screen and a display method, and the reconfigurable LED display screen comprises at least one independent LED display unit. The LED display unit comprises a control end, a main signal line and a plurality of extensible LED lamp strings, each LED lamp string comprises continuous transmission equipment arranged at the head and LED light-emitting elements sequentially connected with the continuous transmission equipment in series, and every two adjacent LED light-emitting elements in each LED lamp string are detachably connected in series so that the LED light-emitting elements connected in series in the LED lamp strings can be changed; a control end and continuous transmission devices in the LED lamp strings are sequentially connected to the main signal line in series, and every two adjacent continuous transmission devices on the main signal line are detachably connected together in series so that the continuous transmission devices connected in series in the LED display units can be changed. Through the mode, the reliability and the flexibility of the reconfigurable LED display screen can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of LED display screens, and in particular, to a reconfigurable LED display screen and a display method. Background Art

[0002] LED light-emitting elements are a common type of display device, widely used in various display screens, such as billboards, stage screens, curtain walls, etc. As Figure 1 shown, in existing LED display screens, all LED light-emitting elements are connected in series in sequence. Therefore, LED light-emitting elements usually use a series connection method to transmit control signals for controlling the LED light-emitting elements, and each LED light-emitting element controls itself by receiving the control signal transmitted from the previous LED light-emitting element.

[0003] This connection method has obvious disadvantages. Specifically, since LED light-emitting elements are a type of power component, they are prone to damage during long-term operation. If any one of the series-connected LED light-emitting elements is damaged (for example, Figure 1 D4 in Figure 1 ), the subsequent LED light-emitting elements (

[0004] D5 - D10 in Summary of the Invention

[0005] In view of this, the purpose of the present application is to provide a reconfigurable LED display screen and a display method to improve the reliability, flexibility, and reusability of the reconfigurable LED display screen.

[0006] In a first aspect, an embodiment of the present application provides a reconfigurable LED display screen, which includes at least one independent LED display unit; the LED display unit includes a control terminal, a main signal line, and a plurality of expandable LED light strings. The LED light string includes a continuation device arranged at the head and LED light-emitting elements sequentially connected in series with the continuation device. Two adjacent LED light-emitting elements in the LED light string are detachably connected in series to change the LED light-emitting elements connected in series in the LED light string; the control terminal and the continuation devices in a plurality of LED light strings are sequentially connected in series on the main signal line, and two adjacent continuation devices on the main signal line are detachably connected in series to change the continuation devices connected in series on the main signal line;

[0007] The control terminal is configured to: transmit the control signal sequence currently configured for the LED display unit where the control terminal is located to the continuation device connected in series with the control terminal; wherein, the control signal sequence includes control signals of each LED light-emitting element in the LED display unit where the control terminal is located, and the arrangement order of each control signal is determined based on the arrangement order of each continuation device in the LED display unit and the arrangement order of each LED light-emitting element in the LED string.

[0008] The continuation device is configured to: after receiving the control signal sequence, according to the currently configured first continuation number, retain the first continuation number of control signals at the front, and use the retained control signals to control the LED string where the continuation device is located, and continue to transmit the remaining control signal sequence to the next continuation device; wherein, the first continuation number configured in the continuation device is the number of LED light-emitting elements connected in series in the LED string where the continuation device is located.

[0009] Combined with the first aspect, the embodiment of the present application provides the first possible implementation manner of the first aspect, wherein, a first extended input interface and a first extended output interface are provided on each of the LED light-emitting elements.

[0010] Between two adjacent LED light-emitting elements in the LED string, they are electrically connected or separated through the first extended input interface on one of the LED light-emitting elements and the first extended output interface on the other LED light-emitting element, so as to change the LED light-emitting elements connected in series in the LED string.

[0011] The first extended output interface is reserved on the LED light-emitting element at the tail of the LED string, and this first extended output interface is used to extend and connect the first extended input interface of other LED light-emitting elements in series at the tail of the LED string.

[0012] Combined with the first aspect, the embodiment of the present application provides the second possible implementation manner of the first aspect, wherein, the LED display unit further includes a plurality of branch signal lines, and each continuation device on the main signal line is respectively detachably connected to different branch signal lines; the continuation devices in some of the LED strings in the LED display screen are connected in series on the main signal line, and for the remaining LED strings, at least one continuation device in the remaining LED strings is connected in series on each of the branch signal lines in sequence; the adjacent two continuation devices on the branch signal line are detachably connected in series together, so as to change the continuation devices connected in series on the branch signal line.

[0013] Combined with the second possible implementation manner of the first aspect, the embodiments of the present application provide a third possible implementation manner of the first aspect, wherein each of the continuation transmission devices is provided with a second extended input interface and a second extended output interface;

[0014] On the main signal line and / or the branch signal line, between two adjacent continuation transmission devices, they are electrically connected or separated through the second extended input interface on one of the continuation transmission devices and the second extended output interface on the other continuation transmission device, so as to change the continuation transmission devices connected in series on the main signal line and / or the branch signal line;

[0015] On the main signal line and / or the branch signal line, the second extended output interface is reserved on the continuation transmission device at the tail, and this second extended output interface is used to extend and connect the second extended input interface of other continuation transmission devices on the continuation transmission device at the tail on the main signal line and / or the branch signal line.

[0016] Combined with the first aspect, the embodiments of the present application provide a fourth possible implementation manner of the first aspect, wherein the control signal is a color control signal, and the color control signal is a signal with the first number of bits; the control signal sequence is transmitted through the return-to-zero code protocol, and the signal transmission rate of the return-to-zero code protocol is the first rate;

[0017] The number of LED light-emitting elements connected in series in each LED light string does not exceed the first number, so that the refresh frequency of the reconfigurable LED display screen reaches the image of refreshing the target number of frames per second; wherein, the first number is the ratio of the first data volume to be transmitted per frame to the first number of bits, and the first data volume is the ratio of the first rate to the target number of frames.

[0018] Combined with the first aspect, the embodiments of the present application provide a fifth possible implementation manner of the first aspect, wherein a readable and writable memory is provided in the continuation transmission device, and the first continuation transmission number configured in the continuation transmission device is written into the readable and writable memory;

[0019] When the continuation transmission device is configured to retain the first number of previous control signals according to the currently configured first continuation transmission number, it is specifically configured as:

[0020] Read the written first continuation transmission number from the readable and writable memory, and according to the read first continuation transmission number, retain the first number of previous control signals in the received control signal sequence.

[0021] Combined with the fifth possible implementation manner of the first aspect, the embodiments of the present application provide a sixth possible implementation manner of the first aspect. Before the reconfigurable LED display screen is used, the first resume transmission count of each resume transmission device in the reconfigurable LED display screen is initialized and configured in the following manner:

[0022] For each resume transmission device in the reconfigurable LED display screen, receive, through the serial port protocol, the first resume transmission configuration parameter initialized and configured for this resume transmission device from the control terminals in the LED display unit where this resume transmission device is located; wherein, the first resume transmission configuration parameter includes the initialized first resume transmission count;

[0023] Write the first resume transmission count included in the first resume transmission configuration parameter into the readable and writable memory of this resume transmission device, so as to initialize the resume transmission parameter configuration of this resume transmission device.

[0024] Combined with the fifth possible implementation manner of the first aspect, the embodiments of the present application provide a seventh possible implementation manner of the first aspect. During the use of the reconfigurable LED display screen, for any LED display unit in the reconfigurable LED display screen, if there is a change in the LED light-emitting elements connected in series in at least one LED light string in this LED display unit, then the first resume transmission count in each resume transmission device in this LED display unit is configured online in the following manner:

[0025] For each resume transmission device in this LED display unit, receive, through the serial port protocol, the first resume transmission configuration parameter reconfigured for this resume transmission device from the control terminals in this LED display unit; wherein, the reconfigured first resume transmission configuration parameter includes the first resume transmission count reconfigured online for this resume transmission device; the first resume transmission count reconfigured online for this resume transmission device is equal to the number of currently serially connected LED light-emitting elements in the LED light string where this resume transmission device is located;

[0026] Write the first resume transmission count included in the first resume transmission configuration parameter into the readable and writable memory of this resume transmission device, and use the first resume transmission count reconfigured online to replace the first resume transmission count stored in this readable and writable memory, so as to update the first resume transmission count in this resume transmission device online.

[0027] Combined with the sixth possible implementation manner or the seventh possible implementation manner of the first aspect, an eighth possible implementation manner of the first aspect is provided in the embodiments of the present application. Among them, the first resumption configuration parameter includes, in sequential order: a first start symbol, a first command symbol, a first resumption number, a first check code, and a first end symbol; wherein, the first check code is obtained by the control terminal performing an exclusive OR operation on one or more of the first start symbol, the first command symbol, the first resumption number, and the first end symbol;

[0028] Writing the first resumption number included in the first resumption configuration parameter into the readable and writable memory of the resumption device includes:

[0029] After receiving the first resumption configuration parameter for the resumption device sent by the control terminal, performing an exclusive OR operation on one or more of the first start symbol, the first command symbol, the first resumption number, and the first end symbol included in the received first resumption configuration parameter to obtain a first exclusive OR value;

[0030] Determine whether the first exclusive OR value is consistent with the first check code. If the first exclusive OR value is consistent with the first check code, write the first resumption number included in the first resumption configuration parameter into the readable and writable memory of the resumption device; if the first exclusive OR value is inconsistent with the first check code, stop writing the first resumption number included in the first resumption configuration parameter into the readable and writable memory of the resumption device.

[0031] Combined with the first aspect, an ninth possible implementation manner of the first aspect is provided in the embodiments of the present application. Among them, if the resumption devices in the multiple LED light strings included in the LED display unit are all connected in series on the main signal line, the resumption devices at both ends among the resumption devices connected in series on the main signal line are respectively used as the head resumption device and the end resumption device; the head resumption device is connected in series with the control terminal;

[0032] When the resumption device is configured to, after receiving a control signal sequence, according to the currently configured first resumption number, retain the first first resumption number of control signals, and use the retained control signals to control the LED light string where the resumption device is located, and continue to transmit the remaining control signal sequence to the next resumption device, it is specifically configured as:

[0033] When the resumption device is the head resumption device, receive the control signal sequence from the control terminal in the LED display unit where the resumption device is located, according to its own configured first resumption number, retain the first first resumption number of control signals in the control signal sequence, and use the retained control signals to control the LED light string where the head resumption device is located, and continue to transmit the remaining control signal sequence to the next resumption device of the head resumption device;

[0034] When the retransmission device is a non-head retransmission device, it receives the transmitted control signal sequence from the previous retransmission device of the non-head retransmission device, retains the first several control signals in the control signal sequence according to the first retransmission number configured by itself, and uses the retained control signals to control the LED string where the non-head retransmission device is located. And if the non-head retransmission device is not the end retransmission device, it transmits the remaining control signal sequence to the next retransmission device of the non-head retransmission device. If the non-head retransmission device is the end retransmission device, the transmission of the control signal sequence in the LED display unit where the retransmission device is located is completed.

[0035] Combined with the second possible implementation manner of the first aspect, the embodiments of the present application provide the tenth possible implementation manner of the first aspect. Among them, the retransmission devices located at both ends in the retransmission devices connected in series on the branch signal line are respectively used as the branch head retransmission device and the branch end retransmission device, and the branch head retransmission device is connected to the retransmission device on the main signal line; in the control signal sequence configured for the LED display unit where the control end is located, the arrangement order of each control signal is determined based on the arrangement order of each retransmission device on the main signal line on the main signal line, the arrangement order of each retransmission device on each branch signal line on the branch signal line, and the arrangement order of each LED light-emitting element in the LED string.

[0036] When the retransmission device is configured to, after receiving the control signal sequence, retain the first several control signals according to the currently configured first retransmission number, use the retained control signals to control the LED string where the retransmission device is located, and then transmit the remaining control signal sequence to the next retransmission device, it is specifically configured as follows:

[0037] When the retransmission device is the retransmission device on the main signal line, after receiving the control signal sequence, it retains the first several control signals according to the second retransmission number configured by itself, transmits the remaining control signal sequence through the main signal line to the next retransmission device on the main signal line of this retransmission device, and retains the first several control signals according to the first retransmission number configured by itself, and uses the retained control signals to control the LED string where the retransmission device is located, and transmits the remaining control signal sequence through the branch signal line to the branch head retransmission device on the branch signal line; where the second retransmission number configured in the retransmission device on the main signal line is the sum of the first retransmission number and the total number of LED light-emitting elements connected in series in each LED string on the branch signal line connected to this retransmission device.

[0038] When the continuation device is the continuation device on the branch signal line, after receiving the control signal sequence, it retains the first several control signals in front, uses the retained control signals to control the LED light string where the continuation device is located, and continues to transmit the remaining control signal sequence to the next continuation device on the branch signal line through the branch signal line.

[0039] Combined with the tenth possible implementation manner of the first aspect, the embodiments of the present application provide the eleventh possible implementation manner of the first aspect, wherein the continuation devices connected in series on the main signal line are respectively used as the main line head-end continuation device and the main line tail-end continuation device, and the main line head-end continuation device is connected in series with the control end;

[0040] When the continuation device on the main signal line is configured to, after receiving the control signal sequence, according to the second continuation number configured by itself, retain the first several control signals in front, transmit the remaining control signal sequence through the main signal line to the next continuation device on the main signal line, and according to the first continuation number configured by itself, retain the first several control signals in front, use the retained control signals to control the LED light string where the continuation device is located, and transmit the remaining control signal sequence through the branch signal line to the branch head-end continuation device on the branch signal line, it is specifically configured as:

[0041] When the continuation device is the main line head-end continuation device, it receives the control signal sequence from the control end in the LED display unit where the continuation device is located, according to the second continuation number configured by itself, retains the first several control signals in front in the control signal sequence, transmits the remaining control signal sequence through the main signal line to the next continuation device on the main signal line, and according to the first continuation number configured by itself, retains the first several control signals in front from the second several control signals retained by itself, uses the retained control signals to control the LED light string where the continuation device is located, and transmits the remaining control signal sequence in the second several control signals retained by itself through the branch signal line connected to the continuation device to the branch head-end continuation device on the branch signal line;

[0042] When the resume transmission device is a non - first - end resume transmission device on the main line, it receives the transmitted control signal sequence from the previous resume transmission device on the main signal line that is located at this non - first - end resume transmission device on the main line. According to the second resume transmission number configured by itself, it retains the first second resume transmission number of control signals in this control signal sequence. If this non - first - end resume transmission device on the main line is not the last resume transmission device on the main line, it transmits the remaining control signal sequence to the next resume transmission device on the main signal line that is located at this non - first - end resume transmission device on the main line. If this non - first - end resume transmission device on the main line is the last resume transmission device on the main line, the control signal sequence on the main signal line where this resume transmission device is located is completely transmitted; and according to the first resume transmission number configured by itself, it retains the first first resume transmission number of control signals from the second resume transmission number of control signals retained by itself, and uses the retained control signals to control the LED string where this resume transmission device is located, and transmits the remaining control signal sequence in the second resume transmission number of control signals retained by itself to the branch - first - end resume transmission device on the branch signal line through the branch signal line connected to this resume transmission device.

[0043] Combined with the third possible implementation manner of the first aspect, the embodiments of the present application provide the twelfth possible implementation manner of the first aspect. Among them, the LED light - emitting elements located at both ends of the LED string are respectively the first - end LED light - emitting element and the last - end LED light - emitting element, and the first - end LED light - emitting element is connected to the resume transmission device;

[0044] When the resume transmission device is configured to control the LED string where this resume transmission device is located by using the retained control signals, it is specifically configured as:

[0045] Based on the return - to - zero code protocol, it transmits the first resume transmission number of retained control signals to the first - end LED light - emitting element connected to this resume transmission device;

[0046] Among them, the LED light - emitting element is configured as: when this LED light - emitting element works normally, it retains the control signal for controlling itself, and uses the control signal retained by itself to control this LED light - emitting element, and transmits the remaining control signals to the next LED light - emitting element.

[0047] Second aspect, an embodiment of the present application further provides a display method, which is applied to a reconfigurable LED display screen. The reconfigurable LED display screen includes at least one independent LED display unit; the LED display unit includes a control terminal, a main signal line, and a plurality of expandable LED light strings. The LED light string includes a continuation device disposed at the head and LED light-emitting elements sequentially connected in series with the continuation device. Two adjacent LED light-emitting elements in the LED light string are detachably connected in series to change the LED light-emitting elements connected in series in the LED light string; the control terminal and the continuation devices in the plurality of LED light strings are sequentially connected in series on the main signal line, and two adjacent continuation devices on the main signal line are detachably connected in series to change the continuation devices connected in series on the main signal line; the method includes:

[0048] The control terminal transmits the control signal sequence configured for the current LED display unit where the control terminal is located to the continuation device connected in series with the control terminal; wherein, the control signal sequence includes the control signals of each LED light-emitting element in the LED display unit where the control terminal is located, and the arrangement order of each control signal is determined based on the arrangement order of each continuation device in the LED display unit and the arrangement order of each LED light-emitting element in the LED light string.

[0049] After receiving the control signal sequence, the continuation device retains the first number of continuation control signals according to the currently configured first continuation number, controls the LED light string where the continuation device is located by using the retained control signals, and continues to transmit the remaining control signal sequence to the next continuation device; wherein, the first continuation number configured in the continuation device is the number of LED light-emitting elements connected in series in the LED light string where the continuation device is located.

[0050] A reconfigurable LED display screen and a display method provided by an embodiment of the present application. Since each LED display unit includes a control terminal, a main signal line, and a plurality of expandable LED light strings, the LED light string includes a continuation device disposed at the head and LED light-emitting elements sequentially connected in series with the continuation device, and the control terminal and the continuation devices in the plurality of LED light strings are sequentially connected in series on the main signal line. Therefore, when one of the LED light-emitting elements is damaged, it only affects the control signal transmission in the LED light string where the LED light-emitting element is located, and has no impact on other LED light strings in the parallel link, ensuring the normal operation of other LED light strings in the parallel link. That is to say, by adding a continuation device, even if a certain LED light-emitting element fails, the control signal sequence can bypass the LED light string where the fault point is located and continue to be transmitted forward, ensuring that the LED light-emitting elements in the remaining LED light strings can still work normally.

[0051] Meanwhile, since two adjacent LED light-emitting elements in the LED light string are detachably connected in series to change the LED light-emitting elements connected in series in the LED light string, and two adjacent data transfer devices on the main signal line are detachably connected in series to change the data transfer devices connected in series on the main signal line. Therefore, according to the usage requirements, the length and the number of LED light strings of each LED light string can be dynamically adjusted, and thus the size, dimension and form of the LED display unit can be dynamically adjusted. Meanwhile, according to the usage requirements, the number and arrangement positions of the LED display units in the reconfigurable LED display screen can also be dynamically adjusted, thereby changing the size, dimension and form of the reconfigurable LED display screen. Moreover, the reuse of each data transfer device and LED light-emitting element can also be realized.

[0052] To make the above objects, features and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given and described in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0053] 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 should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0054] Figure 1 FIG. shows a schematic diagram of the connection relationship of each LED light-emitting element in an existing LED display screen provided by an embodiment of the present application;

[0055] Figure 2 FIG. shows a schematic diagram of the circuit connection relationship among the control end, the main signal line and multiple expandable LED light strings in an LED display unit provided by an embodiment of the present application;

[0056] Figure 3 FIG. shows a schematic diagram of the circuit connection relationship between a first expansion output interface and a first expansion input interface provided by an embodiment of the present application;

[0057] Figure 4 FIG. shows a schematic diagram of the circuit connection relationship between a second expansion output interface and an expansion input interface provided by an embodiment of the present application;

[0058] Figure 5 FIG. shows a schematic diagram of the arrangement and placement manner of each LED light string in the LED display unit in the physical world when the reconfigurable LED display screen is actually used provided by an embodiment of the present application;

[0059] Figure 6 It shows a schematic diagram of the arrangement of each LED light string in the LED display unit in the physical world when the second embodiment provided by the present application is actually used in a reconfigurable LED display screen;

[0060] Figure 7 It shows a schematic diagram of the arrangement of each LED light string in the LED display unit in the physical world when the third embodiment provided by the present application is actually used in a reconfigurable LED display screen;

[0061] Figure 8 It shows a schematic diagram of the arrangement of each LED light string in the LED display unit in the physical world when the fourth embodiment provided by the present application is actually used in a reconfigurable LED display screen;

[0062] Figure 9 It shows a schematic diagram of the arrangement of each LED light string in the LED display unit in the physical world when the fifth embodiment provided by the present application is actually used in a reconfigurable LED display screen;

[0063] Figure 10 It shows a schematic diagram of the arrangement of each LED light string in the LED display unit including branch signal lines in the physical world when the present application is actually used in a reconfigurable LED display screen. Detailed implementation manners

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Usually, 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 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 fall within the scope of protection of the present application.

[0065] Considering that in the existing LED display screens, once a certain LED light-emitting element fails, the entire signal link may be interrupted accordingly, causing all the LED light-emitting elements after the failure point to be unable to receive power or control signals and go out. At the same time, the size, dimensions, and form of the LED display screen are usually set at the time of factory, and cannot be flexibly adjusted, with poor reusability. Based on this, the embodiments of the present application provide a reconfigurable LED display screen and a display method, which will be described below through embodiments.

[0066] For the convenience of understanding this embodiment, first, a reconfigurable LED display screen disclosed in the embodiments of the present application will be introduced in detail. The reconfigurable LED display screen includes at least one independent LED display unit; the LED display unit includes a control terminal, a main signal line, and a plurality of expandable LED light strings. The LED light string includes a continuation device arranged at the head and LED light-emitting elements sequentially connected in series with the continuation device. Two adjacent LED light-emitting elements in the LED light string are detachably connected in series to change the LED light-emitting elements connected in series in the LED light string; on the main signal line, a control terminal and the continuation devices in a plurality of LED light strings are sequentially connected in series. Two adjacent continuation devices on the main signal line are detachably connected in series to change the continuation devices connected in series on the main signal line;

[0067] The control terminal is configured to: transmit the control signal sequence currently configured for the LED display unit where the control terminal is located to the continuation device connected in series with the control terminal; wherein, the control signal sequence includes the control signals of each LED light-emitting element in the LED display unit where the control terminal is located, and the arrangement order of each control signal is determined based on the arrangement order of each continuation device in the LED display unit and the arrangement order of each LED light-emitting element in the LED light string;

[0068] The continuation device is configured to: after receiving the control signal sequence, according to the currently configured first continuation number, retain the first continuation number of control signals at the front, and use the retained control signals to control the LED light string where the continuation device is located, and continue to transmit the remaining control signal sequence to the next continuation device; wherein, the first continuation number configured in the continuation device is the number of LED light-emitting elements connected in series in the LED light string where the continuation device is located.

[0069] In this embodiment, each LED display unit includes a control terminal, a main signal line, and a plurality of expandable LED light strings. Each expandable LED light string includes a continuation device arranged at the head and at least one LED light-emitting element sequentially connected in series with the continuation device. The control terminal in the LED display unit is connected to one end of the main signal line, and the continuation devices arranged at the heads of a plurality of LED light strings are also sequentially connected in series on the main signal line.

[0070] Exemplarily, as Figure 2 shown in the LED display unit, it includes a control terminal K1 and m LED light strings. Each LED light string includes a continuation device arranged at the head and n LED light-emitting elements sequentially connected in series with the continuation device.

[0071] Figure 2 In, C1, C2, C3, C4 ··· Cm They are continuation devices in different LED light strings respectively.

[0072] D11, D12 ··· D1 n are n LED light-emitting elements connected in series with the continuation device C1 in sequence;

[0073] D21, D22 ··· D2 n are n LED light-emitting elements connected in series with the continuation device C2 in sequence;

[0074] D31, D32 ··· D3 n are n LED light-emitting elements connected in series with the continuation device C3 in sequence;

[0075] D41, D42 ··· D4 n are n LED light-emitting elements connected in series with the continuation device C4 in sequence;

[0076] Dm1, Dm2 ··· Dm n are m n LED light-emitting elements connected in series with the continuation device C in sequence.

[0077] In this embodiment, the number of LED light strings included in different LED display units may be the same or different; the number of LED light-emitting elements connected in series in different LED light strings may be the same or different.

[0078] In this embodiment, two adjacent LED light-emitting elements in the LED light string can be detachably connected in series together, so as to dynamically change the number of LED light-emitting elements connected in series in the LED light string, and / or dynamically replace the damaged LED light-emitting elements among the LED light-emitting elements connected in series in the LED light string. Two adjacent continuation devices on the main signal line can be detachably connected in series together, so as to dynamically change the number of continuation devices connected in series on the main signal line, and / or dynamically replace the damaged continuation devices among the continuation devices connected in series on the main signal line.

[0079] In this embodiment, for each LED display unit, control signals corresponding to each LED light-emitting element in the LED display unit are configured in the control end of the LED display unit, and the control signals are used to control the light-emitting condition of the LED light-emitting element. The light-emitting condition of the LED display unit is controlled through the control signals corresponding to each LED light-emitting element, so as to display a corresponding image in the LED display unit.

[0080] In this embodiment, the control signals corresponding to each LED light-emitting element are determined according to the arrangement order of each continuation device in the LED display unit and the arrangement order of each LED light-emitting element in the LED light string.

[0081] In a possible implementation, if the continuation devices in the multiple LED light strings included in the LED display unit are all connected in series to the main signal line, the continuation devices at both ends among the continuation devices connected in series to the main signal line are respectively used as the head-end continuation device and the tail-end continuation device; the head-end continuation device is connected in series to the control end. Exemplarily, as Figure 2 shown, the head-end continuation device is C1, and the tail-end continuation device is C m .

[0082] In this case, in the same LED display unit, the arrangement order of the continuation devices in the LED display unit is arranged in the order from the head-end continuation device to the tail-end continuation device, that is, the head-end continuation device is arranged at the frontmost, and the tail-end continuation device is arranged at the rearmost. In the same LED light string, the two ends of the serially connected LED light-emitting elements are respectively the head-end LED light-emitting element and the tail-end LED light-emitting element, and the continuation device in the LED light string is connected to the head-end LED light-emitting element. The arrangement order of the LED light-emitting elements in the LED light string is arranged in the order from the head-end LED light-emitting element to the tail-end LED light-emitting element, that is, the head-end LED light-emitting element is arranged at the frontmost, and the tail-end LED light-emitting element is arranged at the rearmost.

[0083] As Figure 2 shown, assuming m = 5 and n = 3, then the LED display unit includes 5 continuation devices (C1, C2, C3, C4, C5), and 15 LED light-emitting elements (D11 - D53). The arrangement order of the control signals of each LED light-emitting element in the LED display unit from front to back is successively: X(D11), X(D12), X(D13), X(D21), X(D22), X(D23), X(D31), X(D32), X(D33), X(D41), X(D42), X(D43), X(D51), X(D52), X(D53). Therefore, the control signal sequence of the LED display unit is: {X(D11); X(D12); X(D13); X(D21); X(D22); X(D23); X(D31); X(D32); X(D33); X(D41); X(D42); X(D43); X(D51); X(D52); X(D53)}. Among them, taking the control signal X(D11) as an example, X(D11) refers to the control signal of the LED light-emitting element D11, and other control signals will not be repeated for explanation.

[0084] In this example, since each LED light string where each continuation device (C1, C2, C3, C4, C5) is located includes 3 serially connected LED light-emitting elements, therefore, the first continuation number currently configured for each continuation device is 3.

[0085] In this embodiment, during the actual operation of the reconfigurable LED display screen, for each LED display unit in the reconfigurable LED display screen, the control terminal in the LED display unit transmits the control signal sequence of the LED display unit to the head-end continuation device in the LED display unit.

[0086] In this case, when the continuation device on the main signal line is configured to, after receiving the control signal sequence, according to the currently configured first continuation number, retain the first continuation number of control signals at the front, and use the retained control signals to control the LED string where the continuation device is located, and continue to transmit the remaining control signal sequence to the next continuation device, it is specifically configured as follows:

[0087] When the continuation device is the head-end continuation device, it receives the control signal sequence from the control terminal in the LED display unit where the continuation device is located, according to the first continuation number configured by itself, retains the first continuation number of control signals at the front in the control signal sequence, and uses the retained control signals to control the LED string where the head-end continuation device is located, and continues to transmit the remaining control signal sequence to the next continuation device of the head-end continuation device;

[0088] When the continuation device is a non-head-end continuation device, it receives the transmitted control signal sequence from the previous continuation device of the non-head-end continuation device, according to the first continuation number configured by itself, retains the first continuation number of control signals at the front in the control signal sequence, and uses the retained control signals to control the LED string where the non-head-end continuation device is located, and if the non-head-end continuation device is not the end continuation device, it transmits the remaining control signal sequence to the next continuation device of the non-head-end continuation device, and if the non-head-end continuation device is the end continuation device, the transmission of the control signal sequence in the LED display unit where the continuation device is located is completed.

[0089] In this embodiment, after receiving the control signal sequence sent by the control terminal, the head-end continuation device, according to the first continuation number currently configured by itself, retains the first continuation number of control signals at the front, and uses the retained control signals to control the LED string where the head-end continuation device is located. If there is a remaining control signal sequence, it continues to transmit the remaining control signal sequence to the next continuation device.

[0090] The middle continuation device (i.e., the continuation device in the LED display unit that is neither the head-end nor the end) is configured to: after receiving the control signal sequence transmitted by the previous continuation device, according to the first continuation number currently configured by itself, retain the first continuation number of control signals at the front, and use the retained control signals to control the LED string where the head-end continuation device is located. If there is a remaining control signal sequence, it continues to transmit the remaining control signal sequence to the next continuation device.

[0091] The terminal relay device is configured to: after receiving the control signal sequence transmitted by the previous relay device, according to the first relay number currently configured by itself, retain the first several control signals, and use the retained control signals to control the LED string where the head relay device is located.

[0092] In this embodiment, the next relay device of the relay device refers to: among the relay devices connected in series with this relay device on the main signal line, according to the arrangement order from the head relay device to the terminal relay device, the adjacent relay device located at the rear (downstream) of this relay device. The previous relay device of the relay device refers to: among the relay devices connected in series with this relay device on the main signal line, according to the arrangement order from the head relay device to the terminal relay device, the adjacent relay device located at the front (upstream) of this relay device.

[0093] Exemplarily, as Figure 2 shown, continuing the foregoing example, assuming m = 5 and n = 3, then the control terminal K1 of this LED display unit transmits the control signal sequence {X(D11); X(D12); X(D13); X(D21); X(D22); X(D23); X(D31); X(D32); X(D33); X(D41); X(D42); X(D43); X(D51); X(D52); X(D53)} of this LED display unit to the head relay device C1.

[0094] After receiving the control signal sequence transmitted by the control terminal K1, the head relay device C1, according to the first relay number 3 currently configured by itself, retains the first 3 control signals {X(D11); X(D12); X(D13)}, and uses these 3 control signals to control the LED string (D11, D12, D13) where this relay device C1 is located. And transmits the remaining control signal sequence {X(D21); X(D22); X(D23); X(D31); X(D32); X(D33); X(D41); X(D42); X(D43); X(D51); X(D52); X(D53)} to the next relay device C2.

[0095] After receiving the control signal sequence sent by the continuation transfer device C1, the middle continuation transfer device C2, according to the first continuation transfer number 3 configured currently by itself, retains the first 3 control signals {X(D21); X(D22); X(D23)}, and uses these 3 control signals to control the LED string (D21, D22, D23) where the continuation transfer device C2 is located. And the remaining control signal sequence {X(D31); X(D32); X(D33); X(D41); X(D42); X(D43); X(D51); X(D52); X(D53)} is continued to be transmitted to the next continuation transfer device C3.

[0096] After receiving the control signal sequence sent by the continuation transfer device C4, the terminal continuation transfer device C5, according to the first continuation transfer number 3 configured currently by itself, retains the first 3 control signals {X(D51); X(D52); X(D53)}, and uses these 3 control signals to control the LED string (D51, D52, D53) where the continuation transfer device C5 is located.

[0097] It can be seen that in this embodiment, since the LED light-emitting element is a power component and is prone to damage during long-term operation, while the continuation transfer device belongs to a non-power device and is not prone to damage during long-term operation. Therefore, when one of the LED light-emitting elements is damaged (such as Figure 2 D12 in) only the control signal transmission in the LED string (D11, D12, D13) where the LED light-emitting element (D12) is located will be affected, and there is no impact on other LED strings in the parallel link, which can ensure the normal operation of other LED strings in the parallel link. That is to say, by adding a continuation transfer device, even if a certain LED light-emitting element fails, it can bypass the LED string where the fault point is located and continue to forward the control signal sequence through the continuation transfer device to ensure that the LED light-emitting elements in the remaining LED strings can still work normally.

[0098] In a possible implementation manner, as Figure 3 shown, a first extended input interface (DIN) and a first extended output interface (DO) are provided on each LED light-emitting element in the LED string;

[0099] Between two adjacent LED light-emitting elements in the LED string, they are electrically connected or separated through the first extended input interface on one LED light-emitting element and the first extended output interface on the other LED light-emitting element to be used for changing the LED light-emitting elements connected in series in the LED string;

[0100] The first extended output interface is reserved on the LED light-emitting element at the tail of the LED string, and this first extended output interface is used to extend and connect the first extended input interface of other LED light-emitting elements in series at the tail of the LED string.

[0101] Exemplarily, between two serially-connected LED light-emitting elements (such as D11 and D12), the first signal output interface (DO) of the upstream LED light-emitting element (D11) is electrically connected or separated from the first signal input interface (DIN) of the downstream LED light-emitting element (D12). Thus, through this splitting structure, the number of serially-connected LED light-emitting elements in the LED light string can be dynamically changed, and / or, the damaged LED light-emitting elements in the LED light string can be dynamically replaced online. Among them, the upstream and downstream are determined according to the control signal transmission direction. Specifically, the control signal is transmitted from the upstream LED light-emitting element to the downstream LED light-emitting element.

[0102] In this embodiment, whether during the construction process or the use process of the reconfigurable LED display screen, if a user wants to increase the number of LED light-emitting elements in any one of the LED light strings in the reconfigurable LED display screen, the user can connect the first extended input interface of the newly added LED light-emitting element to the first extended output interface of the LED light-emitting element at the end of the LED light string.

[0103] If the user wants to reduce the number of LED light-emitting elements in the LED light string, the user can start reducing from the end of the LED light string. Among the at least one LED light-emitting element to be removed, the first extended input interface of the LED light-emitting element at the forefront is separated from the first extended output interface of the previous LED light-emitting element of this LED light-emitting element. For example, as Figure 2 shown, if the user wants to reduce 1 LED light-emitting element in the LED light string, at this time the user can separate the first extended input interface of D1 n from the first extended output interface of D1 n-1 so that D1 n can be removed from the LED light string.

[0104] If a user wants to replace a damaged LED light-emitting component (such as D12) in an LED light string, the user can separate the first extended input interface of the damaged LED light-emitting component (such as D12) from the first extended output interface of the previous LED light-emitting component (such as D11) of the damaged LED light-emitting component, and separate the first extended output interface of the damaged LED light-emitting component (such as D12) from the first extended input interface of the next LED light-emitting component (such as D13) of the damaged LED light-emitting component, so as to remove the damaged LED light-emitting component (such as D12) from the LED light string. Then, connect the first extended input interface of the new LED light-emitting component to the first extended output interface of the previous LED light-emitting component (such as D11) of the damaged LED light-emitting component, and connect the first extended output interface of the new LED light-emitting component to the first extended input interface of the next LED light-emitting component (such as D13) of the damaged LED light-emitting component, so as to replace the original damaged LED light-emitting component with the new LED light-emitting component.

[0105] It can be seen that in this embodiment, whether in the process of building or using the reconfigurable LED display screen, the length of each LED light string in the reconfigurable LED display screen can be dynamically adjusted according to the usage requirements (that is, the number of LED light-emitting components connected in series in each LED light string is dynamically adjusted). At the same time, when there is a damaged LED light-emitting component in the LED light string, the damaged LED light-emitting component can be flexibly replaced.

[0106] In a possible implementation manner, as Figure 4 shown, each data transfer device on the main signal line is provided with a second extended input interface (DIN2) and a second extended output interface (DO2);

[0107] On the main signal line, between two adjacent data transfer devices, they are electrically connected or separated through the second extended input interface located on one of the data transfer devices and the second extended output interface located on the other data transfer device, so as to change the data transfer devices connected in series on the main signal line;

[0108] On the main signal line, the second extended output interface is reserved on the data transfer device at the tail, and this second extended output interface is used to extend and connect the second extended input interface of other data transfer devices in series on the data transfer device at the tail of the main signal line.

[0109] Exemplarily, between two continuation devices (such as C1 and C2) connected in series on the main signal line, the second extended output interface (DO2) of the upstream continuation device is electrically connected or separated from the second extended input interface (DIN2) of the downstream continuation device, so as to change the number of continuation devices connected in series on the main signal line, and / or replace the damaged continuation device among the continuation devices connected in series on the main signal line. Among them, the control signal sequence is transmitted from the upstream continuation device on the main signal line to the downstream continuation device on the main signal line.

[0110] In this embodiment, whether during the construction process or the use process of the reconfigurable LED display screen, if a user wants to increase the number of continuation devices on any one of the main signal lines in the reconfigurable LED display screen, the user can connect the second extended input interface of the newly added continuation device to the second extended output interface of the continuation device at the end of the main signal line.

[0111] If a user wants to reduce the number of continuation devices connected in series on any one of the main signal lines in the reconfigurable LED display screen, the user can start reducing from the end of the main signal line, where the end of the main signal line refers to the end far from the control end. Separate the second extended input interface of the frontmost continuation device in at least one continuation device to be removed from the second extended output interface of the previous continuation device of this continuation device. For example, as Figure 2 shown, if the user wants to reduce 1 continuation device in the main signal line, at this time the user can separate the second extended input interface of C m from the second extended output interface of C m-1 so that C m can be removed from the main signal line.

[0112] It can be seen that in this embodiment, whether during the construction process or the use process of the reconfigurable LED display screen, the user can dynamically adjust the number of continuation devices connected in series on any one of the main signal lines according to the usage requirements, and timely replace the damaged continuation device.

[0113] In the embodiment of the present application, the reconfigurable LED display screen includes at least one independent LED display unit. During actual use, the arrangement and display mode of the LED lamp strings in each LED display unit in the physical world can be adjusted arbitrarily according to the user's usage requirements or design.

[0114] Exemplarily, first, take the case where the reconfigurable LED display screen includes one independent LED display unit as an example for description. In the actual physical usage scenario, for example, on the exterior wall of a building, as Figure 5As shown, the LED strings in the LED display unit can be arranged in parallel perpendicular to the ground to form a two-dimensional display screen parallel to the plane of the building exterior wall. As Figure 6 shown, the LED strings in the LED display unit can be arranged according to a preset shape rule. For example, they can be arranged in a parallel zigzag pattern to form a two-dimensional display screen parallel to the plane of the building exterior wall. As Figure 7 shown, some of the LED strings in the LED display unit (such as the LED strings with odd arrangement orders) are arranged in parallel on one side, and the remaining LED strings (such as the LED strings with even arrangement orders) are arranged in parallel on the other side, thus forming a two-dimensional display screen. Or as Figure 8 shown, some of the LED strings in the LED display unit are arranged in a parallel zigzag pattern on one side, and the remaining LED strings are arranged in a parallel zigzag pattern on the other side.

[0115] A three-dimensional screen can also be formed by the LED display unit. As Figure 9 shown, some of the LED strings in the LED display unit are arranged in parallel at a first angle with the ground, and the remaining LED strings are arranged in parallel at a second angle with the ground to form a triangular three-dimensional screen.

[0116] It should be noted that Figures 5 - 9 the examples in are merely exemplary descriptions. The specific arrangement of the LED strings in the physical usage scenario of this application can be arbitrarily designed according to the user's usage requirements. In actual use, the control end and the data transfer device can be hidden in physical components such as the display housing of the reconfigurable LED display screen and do not need to be shown outside for the audience to see. At the same time, Figures 5 - 9 the distances between the various LED light-emitting elements shown in are merely exemplary and do not represent the distances between the various LED light-emitting elements in the actual usage scenario.

[0117] In this embodiment, the reconfigurable LED display screen can also include multiple independent LED display units. In the physical usage scenario, multiple independent LED display units can be physically spliced together to form a complete reconfigurable LED display screen. Among them, the arrangement methods of the LED strings in different LED display units in the reconfigurable LED display screen can be the same or different. For example, the reconfigurable LED display screen includes 3 independent LED display units. Among them, the LED strings in two independent LED display units are arranged in the manner shown in Figure 5 shown, and the arrangement of the LED strings in the other independent LED display unit can be arranged as shown in Figure 7arranged in the manner shown. By splicing these three LED display units physically, they jointly form a complete reconfigurable LED display screen.

[0118] The reconfigurable LED display screen can be a two-dimensional planar display screen (by arranging these three LED display units on the same physical plane), or a three-dimensional display screen (arranging 1 - 2 of the LED display units on one physical plane and the remaining LED display units on another physical plane, with these two physical planes forming a certain angle).

[0119] In this embodiment, the size and shape of the reconfigurable LED display screen can be changed by increasing or decreasing the number of LED display units, their arrangement, as well as the number and arrangement positions of the LED lamp strings in each LED display unit.

[0120] In a possible implementation, as Figure 10 shown, the LED display unit further includes a plurality of branch signal lines, and each relay device on the main signal line is detachably connected to a different branch signal line; the relay devices in some of the LED lamp strings in the LED display screen are connected in series on the main signal line. For the remaining LED lamp strings, at least one relay device in the remaining LED lamp strings is connected in series on each branch signal line in sequence; two adjacent relay devices on the branch signal line are connected in series through a detachable second series connection structure to be used for changing the relay devices connected in series on the branch signal line.

[0121] In this embodiment, each relay device on the main signal line can be detachably connected to a branch signal line, and different relay devices are connected to different branch signal lines. The LED display unit includes a plurality of expandable LED lamp strings. The relay devices in some of the LED lamp strings are connected in series on the main signal line, and the relay devices connected in series on the main signal line can be regarded as primary relay devices. For the relay devices in the remaining LED lamps in the LED display unit (i.e., the relay devices in the LED display unit that are not connected in series on the main signal line), these relay devices are regarded as secondary relay devices. For each branch signal line, at least one secondary relay device is connected in series on this branch signal line.

[0122] In this embodiment, whether it is the relay device on the main signal line (which can also be called the primary relay device) or the relay device on the branch signal line (which can also be called the secondary relay device), a plurality of LED light-emitting elements are connected in series under these relay devices. As Figure 10 shown, through this structure, a three-dimensional display screen can be formed.

[0123] In a possible implementation, if each continuation device on the main signal line is respectively connected to a branch signal line, the continuation devices at both ends among the continuation devices connected in series on the branch signal line are respectively used as the branch head-end continuation device and the branch tail-end continuation device, and the branch head-end continuation device is connected to the continuation device on the main signal line; in the control signal sequence configured for the LED display unit where the control end is located in the control end, the arrangement order of the control signals is determined based on the arrangement order of the continuation devices on the main signal line on the main signal line, the arrangement order of the continuation devices on each branch signal line on the branch signal line, and the arrangement order of each LED light-emitting element in the LED light string.

[0124] In this case, the arrangement order of the continuation devices on the main signal line on the main signal line is arranged in the order from the main line head-end continuation device to the main line tail-end continuation device, that is, the main line head-end continuation device is arranged at the frontmost, and the main line tail-end continuation device is arranged at the rearmost.

[0125] The arrangement order of the continuation devices on each branch signal line on the branch signal line is arranged in the order from the branch head-end continuation device to the branch tail-end continuation device, where the branch head-end continuation device is arranged at the frontmost and the branch tail-end continuation device is arranged at the rearmost.

[0126] The arrangement order of each LED light-emitting element in the LED light string is arranged in the order from the head-end LED light-emitting element to the tail-end LED light-emitting element, that is, the head-end LED light-emitting element is arranged at the frontmost and the tail-end LED light-emitting element is arranged at the rearmost.

[0127] Exemplarily, as Figure 10 shown, the control end K2, the continuation device C'1, the continuation device C'2, the continuation device C'3, and the continuation device C'4 are connected in series on the main signal line in sequence. The continuation device C'1 is connected to the branch signal line on which the continuation devices C' 11 , the continuation device C' 12 are connected in series. The continuation device C'2 is connected to the branch signal line on which the continuation devices C' 21 , the continuation device C' 22 are connected in series. The continuation device C'3 is connected to the branch signal line on which the continuation devices C' 31 , the continuation device C' 32 are connected in series. The continuation device C'4 is connected to the branch signal line on which the continuation devices C' 41 , the continuation device C' 42 are connected in series. Each continuation device (including C'1, C'2, C'3, C'4, C' 11 , C' 12 , C' 21 , C' 22 , C'31 , C' 32 , C' 41 , C' 42 )。

[0128] Assume that in the LED string where C'1 is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 11 , D' 12 ( Figure 10 not marked in 11 In the LED string where C' is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 111 , D' 112 . C' 12 In the LED string where C' is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 121 , D' 122 .

[0129] In the LED string where C'2 is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 21 , D' 22 ( Figure 10 not marked in 21 In the LED string where C' is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 211 , D' 212 . C' 22 In the LED string where C' is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 221 , D' 222 .

[0130] In the LED string where C'3 is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 31 , D' 32 ( Figure 10 not marked in 31 In the LED string where C' is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 311 , D' 312 . C' 32 In the LED string where C' is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 321 , D' 322 .

[0131] In the LED string where C'4 is located, the two LED light-emitting elements connected in series are, from top to bottom: D' 41 , D' 42 ( Figure 10 not marked in C'41 The two LED light-emitting elements connected in series in the LED light string are, from top to bottom: D' 411 , D' 412 . C' 42 The two LED light-emitting elements connected in series in the LED light string are, from top to bottom: D' 421 , D' 422 .

[0132] The arrangement order of the control signals of the LED light-emitting elements in the LED display unit is, from front to back: X(D' 11 ), X(D' 12 ), X(D' 111 ), X(D' 112 ), X(D' 121 ), X(D' 122 ), X(D' 21 ), X(D' 22 ), X(D' 211 ), X(D' 212 ), X(D' 221 ), X(D' 222 ), X(D' 31 ), X(D' 32 ), X(D' 311 ), X(D' 312 ), X(D' 321 ), X(D' 322 ), X(D' 41 ), X(D' 42 ), X(D' 411 ), X(D' 412 ), X(D' 421 ), X(D' 422 ).

[0133] Therefore, the control signal sequence of the LED display unit is: {X(D' 11 ), X(D' 12 ), X(D' 111 ), X(D' 112 ), X(D' 121 ), X(D' 122 ), X(D' 21 ), X(D' 22 ), X(D' 211 ), X(D' 212 ), X(D' 221 ), X(D' 222 ), X(D' 31 ), X(D' 32 ), X(D' 311)、X(D' 312 )、X(D' 321 )、X(D' 322 )、X(D' 41 )、X(D' 42 )、X(D' 411 )、X(D' 412 )、X(D' 421 )、X(D' 422 )}. Among them, taking the control signal X(D' 11 ) as an example, X(D' 11 ) refers to the control signal of the LED light-emitting element D' 11 . Other control signals will not be repeated.

[0134] In this example, since each of the subsequent transmission devices (C'1, C'2, C'3, C'4, C' 11 、C' 12 、C' 21 、C' 22 、C' 31 、C' 32 、C' 41 、C' 42 ) has 2 serially connected LED light-emitting elements in the LED light string where it is located, therefore, the first subsequent transmission number currently configured for each subsequent transmission device is 2.

[0135] Meanwhile, for each subsequent transmission device (C'1, C'2, C'3, C'4) on the main signal line, the total number of serially connected LED light-emitting elements in each LED light string connected to this subsequent transmission device is 4, and the first subsequent transmission number currently configured for this subsequent transmission device is 2, so the second subsequent transmission number currently configured for this subsequent transmission device is 6.

[0136] In this case, when the subsequent transmission device is configured to, after receiving the control signal sequence, according to the currently configured first subsequent transmission number, retain the first subsequent transmission number of control signals before, and use the retained control signals to control the LED light string where this subsequent transmission device is located, and when passing the remaining control signal sequence to the next subsequent transmission device, it is specifically configured as:

[0137] When the retransmission device is the retransmission device on the main signal line, after receiving the control signal sequence, according to the second retransmission number configured by itself, the first second retransmission number of control signals is reserved, and the remaining control signal sequence is transmitted through the main signal line to the next retransmission device on the main signal line of this retransmission device. And according to the first retransmission number configured by itself, the first first retransmission number of control signals is reserved, and the reserved control signals are used to control the LED string where this retransmission device is located. And the remaining control signal sequence is transmitted through the branch signal line to the branch head retransmission device on the branch signal line. Wherein, the second retransmission number configured in the retransmission device on the main signal line is the sum of the first retransmission number and the total number of LED light-emitting elements connected in series in each LED string on the branch signal line connected to this retransmission device.

[0138] When the retransmission device is the retransmission device on the branch signal line, after receiving the control signal sequence, the first first retransmission number of control signals is reserved, and the reserved control signals are used to control the LED string where this retransmission device is located. And the remaining control signal sequence is retransmitted through the branch signal line to the next retransmission device on the branch signal line.

[0139] In a possible implementation manner, the retransmission devices located at both ends among the retransmission devices connected in series on the main signal line are respectively used as the main line head retransmission device and the main line end retransmission device, and the main line head retransmission device is connected in series with the control end.

[0140] In this embodiment, during the actual working process of the reconfigurable LED display screen, for each LED display unit in the reconfigurable LED display screen, the control end in this LED display unit transmits the control signal sequence of this LED display unit to the main line head retransmission device in this LED display unit.

[0141] When the retransmission device is the retransmission device on the main signal line, when this retransmission device is configured to, after receiving the control signal sequence, according to the second retransmission number configured by itself, reserve the first second retransmission number of control signals, transmit the remaining control signal sequence through the main signal line to the next retransmission device on the main signal line of this retransmission device, and according to the first retransmission number configured by itself, reserve the first first retransmission number of control signals, and use the reserved control signals to control the LED string where this retransmission device is located, and transmit the remaining control signal sequence through the branch signal line to the branch head retransmission device on the branch signal line, it is specifically configured as:

[0142] The continuation device on the main signal line, when configured to, after receiving a control signal sequence, according to the second continuation number configured by itself, retain the first second continuation number of control signals, transmit the remaining control signal sequence to the next continuation device on the main signal line through the main signal line, and according to the first continuation number configured by itself, retain the first first continuation number of control signals, and use the retained control signals to control the LED string where the continuation device is located, and transmit the remaining control signal sequence to the branch head continuation device on the branch signal line through the branch signal line, is specifically configured as follows:

[0143] When the continuation device is the main line head continuation device, receive the control signal sequence from the control terminal in the LED display unit where the continuation device is located, according to the second continuation number configured by itself, retain the first second continuation number of control signals in the control signal sequence, transmit the remaining control signal sequence to the next continuation device on the main signal line through the main signal line, and according to the first continuation number configured by itself, retain the first first continuation number of control signals from the second continuation number of control signals retained by itself, and use the retained control signals to control the LED string where the continuation device is located, and transmit the remaining control signal sequence in the second continuation number of control signals retained by itself to the branch head continuation device on the branch signal line through the branch signal line connected to the continuation device;

[0144] When the continuation device is a non-head main line continuation device, receive the transmitted control signal sequence from the previous continuation device on the main signal line where the non-head main line continuation device is located, according to the second continuation number configured by itself, retain the first second continuation number of control signals in the control signal sequence, if the non-head main line continuation device is not the main line end continuation device, transmit the remaining control signal sequence to the next continuation device on the main signal line where the non-head main line continuation device is located, if the non-head main line continuation device is the main line end continuation device, the transmission of the control signal sequence on the main signal line where the continuation device is located is completed; and according to the first continuation number configured by itself, retain the first first continuation number of control signals, and use the retained control signals to control the LED string where the continuation device is located, and transmit the remaining control signal sequence to the branch head continuation device on the branch signal line through the branch signal line connected to the continuation device.

[0145] In this embodiment, the main line head continuation device (such as Figure 10 C'1 in) is configured to: after receiving the control signal sequence (such as {X(D' Figure 10 K2 in) sent by the control terminal (such as 11 )、X(D' 12 )、X(D' 111 )、X(D' 112)、X(D' 121 )、X(D' 122 )、X(D' 21 )、X(D' 22 )、X(D' 211 )、X(D' 212 )、X(D' 221 )、X(D' 222 )、X(D' 31 )、X(D' 32 )、X(D' 311 )、X(D' 312 )、X(D' 321 )、X(D' 322 )、X(D' 41 )、X(D' 42 )、X(D' 411 )、X(D' 412 )、X(D' 421 )、X(D' 422 )}) After that, according to the second retransmission number configured by itself (for example, 6), retain the first second retransmission number of control signals in this control signal sequence (for example, X(D' 11 )、X(D' 12 )、X(D' 111 )、X(D' 112 )、X(D' 121 )、X(D' 122 )) and transmit the remaining control signals (for example, X(D' 21 )、X(D' 22 )、X(D' 211 )、X(D' 212 )、X(D' 221 )、X(D' 222 )、X(D' 31 )、X(D' 32 )、X(D' 311 )、X(D' 312 )、X(D' 321 )、X(D' 322 )、X(D' 41 )、X(D' 42 )、X(D' 411 )、X(D' 412 )、X(D' 421 )、X(D' 422 )) to the next retransmission device of the main line first-end retransmission device (for example Figure 10 's C'2).

[0146] And, according to the first resumption number configured by itself (for example, 2), retain the first resumption number of control signals from the second resumption number of control signals retained by itself (for example, retain X(D' 11 )、X(D' 12 )) and use the retained control signals to control the LED string where the main line head resumption device (for example, Figure 10 's C'1) is located, and transmit the remaining control signal sequence in the second resumption number of control signals retained by itself (for example, X(D' 111 )、X(D' 112 )、X(D' 121 )、X(D' 122 )) to the branch head resumption device on the branch signal line through the branch signal line connected to itself (for example, Figure 10 's C' 11 ).

[0147] The main line middle resumption device (that is, the device on the main signal line that is not the main line head resumption device and not the main line end resumption device, for example, Figure 10 's C'2) is configured to: after receiving the transmitted control signal sequence from the previous resumption device on the main signal line that is located at this main line middle resumption device (for example, Figure 10 's C'1), according to the second resumption number configured by itself (for example, 6), retain the first second resumption number of control signals in this control signal sequence (for example, retain X(D' 21 )、X(D' 22 )、X(D' 211 )、X(D' 212 )、X(D' 221 )、X(D' 222 )) and transmit the remaining control signal sequence (for example, X(D' 31 )、X(D' 32 )、X(D' 311 )、X(D' 312 )、X(D' 321 )、X(D' 322 )、X(D' 41 )、X(D' 42 )、X(D' 411 )、X(D' 412 )、X(D' 421 )、X(D' 422 )) through the main signal line to the next resumption device on the main signal line of this resumption device (for example, Figure 10 's C'3).

[0148] Also, according to the first retransmission number configured by itself (e.g., 2), retain the first retransmission number of control signals from the second retransmission number of control signals retained by itself (e.g., retain X(D' 21 ), X(D' 22 ))), and use the retained control signals to control the LED light string where the middle main-line retransmission device (e.g., Figure 10 's C'2) is located, and transmit the remaining control signal sequence in the second retransmission number of control signals retained by itself (e.g., X(D' 211 ), X(D' 212 ), X(D' 221 ), X(D' 222 )) through the branch signal line connected to itself to the branch first-end retransmission device on this branch signal line (e.g., Figure 10 's C' 21 ).

[0149] The main-line end retransmission device (e.g., Figure 10 's C'4) is configured to: receive the transmitted control signal sequence (e.g., X(D' Figure 10 's C'3) (e.g., X(D' 41 ), X(D' 42 ), X(D' 411 ), X(D' 412 ), X(D' 421 ), X(D' 422 )), and according to the second retransmission number configured by itself (e.g., 6), retain the first second retransmission number of control signals in this control signal sequence (i.e., retain X(D' 41 ), X(D' 42 ), X(D' 411 ), X(D' 412 ), X(D' 421 ), X(D' 422 )).

[0150] According to the first retransmission number configured by itself (e.g., 2), retain the first retransmission number of control signals from the second retransmission number of control signals retained by itself (e.g., retain X(D' 41 ), X(D' 42 ))), and use the retained control signals to control the LED light string where this retransmission device (e.g., Figure 10 's C'4) is located, and transmit the remaining control signal sequence in the second retransmission number of control signals retained by itself (e.g., X(D' 411 ), X(D' 412 ), X(D' 421 ), X(D' 422)) It is transmitted to the first continuation device at the branch head end on the branch signal line through the branch signal line connected by the continuation device (for example Figure 10 C' in 41 ).

[0151] In this embodiment, the next continuation device of the continuation device on the main signal line refers to: among the continuation devices connected in series with the continuation device on the main signal line, according to the arrangement order from the first continuation device at the main line head end to the last continuation device at the main line end, the adjacent continuation device located behind (downstream) the continuation device. The previous continuation device of the continuation device on the main signal line refers to: among the continuation devices connected in series with the continuation device on the main signal line, according to the arrangement order from the first continuation device at the main line head end to the last continuation device at the main line end, the adjacent continuation device located in front (upstream) of the continuation device.

[0152] In a possible implementation manner, when the continuation device on the branch signal line is configured to, after receiving the control signal sequence, retain the first several continuation control signals, and use the retained control signals to control the LED string where the continuation device is located, and continue to transmit the remaining control signal sequence to the next continuation device on the branch signal line, specifically:

[0153] The first continuation device at the branch head end on the branch signal line is configured to: receive the transmitted control signal sequence from the continuation device on the main signal line connected to the branch signal line, retain the first several continuation control signals according to the first continuation number configured by itself, and use the retained control signals to control the LED string where the first continuation device at the branch head end is located, and continue to transmit the remaining control signal sequence to the next continuation device on the branch signal line through the branch signal line;

[0154] The middle continuation device on the branch signal line is configured to: receive the transmitted control signal sequence from the previous continuation device on the branch signal line where the middle continuation device on the branch signal line is located, retain the first several continuation control signals according to the first continuation number configured by itself, and use the retained control signals to control the LED string where the middle continuation device on the branch signal line is located, and continue to transmit the remaining control signal sequence to the next continuation device on the branch signal line through the branch signal line;

[0155] The last continuation device on the branch signal line is configured to: receive the transmitted control signal sequence from the previous continuation device on the branch signal line where the last continuation device on the branch signal line is located, retain the first several continuation control signals according to the first continuation number configured by itself, and use the retained control signals to control the LED string where the last continuation device on the branch signal line is located.

[0156] In a possible implementation, each data relay device on the branch signal line is provided with a second extended input interface and a second extended output interface; on the branch signal line, between two adjacent data relay devices, they are electrically connected or separated through the second extended input interface on one of the data relay devices and the second extended output interface on the other data relay device, so as to change the data relay devices connected in series on the branch signal line; on the branch signal line, the second extended output interface is reserved on the data relay device at the tail, and this second extended output interface is used to extend and serially connect the second extended input interface of other data relay devices on the data relay device at the tail on the branch signal line.

[0157] In this embodiment, by providing each data relay device on the branch signal line with a second extended input interface and a second extended output interface, the number of data relay devices connected in series on the branch signal line can be dynamically changed, and / or the damaged data relay device among the data relay devices connected in series on the branch signal line can be dynamically replaced. For specific explanations, please refer to the appendix Figure 4 and its corresponding text description, which will not be repeated in this application.

[0158] In a possible implementation, if the data relay device in the LED display unit is not connected to the branch signal line, the cross-sectional area of the main signal line is larger than that of the auxiliary signal line.

[0159] In this embodiment, as Figure 2 shown, the control terminals in the LED display unit and each data relay device on the main signal line are serially connected through a main signal line, and the data relay devices in the LED lamp string and each LED light-emitting element are serially connected through an auxiliary signal line. That is to say, the entire LED display unit in this embodiment is driven by the same main signal line, with a simple structure, which is beneficial to reducing production costs.

[0160] At the same time, considering that during the transmission of the control signal sequence, the control signal sequence for controlling the entire LED display unit is transmitted through the main signal line, while each auxiliary signal line is only used to transmit the control signals of the LED light-emitting elements in its own LED lamp string. Therefore, it can be considered that the current flowing through the main signal line is the sum of the currents flowing through each auxiliary signal line included in the LED display unit. Therefore, the cross-sectional area of the main signal line is larger than that of the auxiliary signal line.

[0161] In a possible implementation, as Figure 10As shown, if the continuous transmission devices in some LED lamp strings in the LED display unit are connected in series on a main signal line, and the continuous transmission devices in the remaining LED lamp strings are connected in series on their respective corresponding branch signal lines, then each LED light-emitting element in the LED lamp string is connected in series through an auxiliary signal line; the cross-sectional area of the main signal line is larger than the cross-sectional area of the branch signal line, and the cross-sectional area of the branch signal line is larger than the cross-sectional area of the auxiliary signal line.

[0162] In this embodiment, the entire LED display unit is driven by the same main signal line. For each branch signal line, this branch signal line is used to drive each LED lamp string on this branch signal line. That is to say, when transmitting the control signal sequence, the control signal sequence for controlling the entire LED display unit is transmitted through the main signal line, while the control signal sequence for controlling at least one LED lamp string on the entire branch signal line needs to be transmitted through this branch signal line. At this time, it can be considered that the current flowing through the main signal line is the sum of the currents flowing through each branch signal line included in the LED display unit, and the current flowing through each branch signal line is the sum of the currents flowing through each auxiliary signal line on this branch signal line. Therefore, the cross-sectional area of the main signal line is larger than the cross-sectional area of the branch signal line, and the cross-sectional area of the branch signal line is larger than the cross-sectional area of the auxiliary signal line.

[0163] In a possible implementation manner, the cross-sectional areas of the auxiliary signal lines in different LED lamp strings can be the same or different. Specifically, when the difference in the number of LED light-emitting elements connected in series in different LED lamp strings is small, the cross-sectional areas of the auxiliary signal lines in each LED lamp string can be the same; when the difference in the number of LED light-emitting elements connected in series in different LED lamp strings is large, the cross-sectional area of the auxiliary signal in each LED lamp string can be determined according to the number of LED light-emitting elements connected in series in the LED lamp string. Among them, the cross-sectional area of the auxiliary signal in the LED lamp string is positively correlated with the number of LED light-emitting elements connected in series in this LED lamp string.

[0164] Similarly, the cross-sectional areas of different branch signal lines can be the same or different. When the difference in the number of LED light strings connected in different branch signal lines is small (or the difference in the number of LED light-emitting elements included in the LED light strings connected in different branch signal lines is small), the cross-sectional areas of each branch signal line can be the same; when the difference in the number of LED light strings connected in different branch signals is large (or the difference in the number of LED light-emitting elements included in the LED light strings connected in different branch signal lines is large), the cross-sectional areas of each branch signal line are determined according to the number of LED light strings connected (or the number of LED light-emitting elements included in the LED light strings connected in different branch signal lines). Among them, the cross-sectional area of the branch signal line is positively correlated with the number of LED light strings connected to the branch signal line (or the number of LED light-emitting elements included in the LED light strings connected in different branch signal lines).

[0165] In a possible implementation manner, the control signal is a color control signal, and the color control signal is a signal with the first number of digits; the color control signal is an RGB color control signal or a WRGB color control signal; the control signal sequence is transmitted through a return-to-zero code protocol, and the signal transmission rate of the return-to-zero code protocol is the first rate;

[0166] The number of LED light-emitting elements connected in series in each LED light string does not exceed the first number, so that the refresh frequency of the reconfigurable LED display screen reaches the image of the target number of frames per second; among them, the first number is the ratio of the first data volume to be transmitted per frame to the first number of digits, and the first data volume is the ratio of the first rate to the target number of frames.

[0167] In this embodiment, the control signal for controlling the LED light-emitting element is a color control signal, and the color control signal is used to control the chromaticity and brightness of the color displayed by the LED light-emitting element. The control signal sequence for controlling the LED display unit is actually a color control signal sequence.

[0168] Specifically, the RGB color control signal includes: a blue control signal for regulating the chromaticity and brightness of the blue LED element in the LED light-emitting element, a red control signal for regulating the chromaticity and brightness of the red LED element in the LED light-emitting element, and a yellow control signal for regulating the chromaticity and brightness of the yellow LED element in the LED light-emitting element.

[0169] The WRGB color control signal includes: a blue control signal for regulating the chromaticity and brightness of the blue LED element in the LED light-emitting element, a red control signal for regulating the chromaticity and brightness of the red LED element in the LED light-emitting element, a yellow control signal for regulating the chromaticity and brightness of the yellow LED element in the LED light-emitting element, and a white control signal for regulating the chromaticity and brightness of the white LED element in the LED light-emitting element.

[0170] Under normal circumstances, the color control signal is a 24-bit signal, that is, the first number is usually 24 bits.

[0171] In the LED display unit, when transmitting the control signal sequence, it is transmitted through the return-to-zero code protocol. Specifically, the control end transmits the control signal sequence to the head-end continuation device (or the main-line head-end continuation device), the control signal sequence is transmitted between the continuation devices, the control signal sequence is sent from the continuation device to the head-end LED light-emitting element, and the control signal sequence is transmitted between the LED light-emitting elements, all of which are transmitted through the return-to-zero code protocol.

[0172] In the prior art, the refresh rate of the LED display screen is usually low. In this embodiment, in order to increase the refresh rate of the reconfigurable LED display screen to reach 40 frames per second, the signal transmission rate of the return-to-zero code protocol is set to 800 kbps (that is, the first rate is 800 kbps), and when ensuring that the number of LED light-emitting elements connected in series in each LED light string does not exceed 833 at most, the refresh rate of the reconfigurable LED display screen in this embodiment can reach 40 frames per second.

[0173] Specifically, currently, the highest signal transmission rate of the return-to-zero code protocol can reach 800 kbps, and the lowest is 400 kbps. In order to make the reconfigurable LED display screen reach a refresh rate of 40 frames per second, that is, in order to make the reconfigurable LED display screen refresh 40 frames of images per second (the target number of frames is equal to 40), the signal transmission rate of the return-to-zero code protocol is set to 800 kbps, that is, the first rate is 800 kbps.

[0174] Among them, the first rate = 800 kbps = 800000 bits / s. The first data volume to be transmitted per frame at 40 fps is 800000 / 40 = 20000 bits. Since each color control signal is 24 bits (that is, the first number is equal to 24 bits), the first data volume of 20000 bits can approximately support the transmission of 833 control signals. The first quantity = 20000 / 24 = 833.3333333.

[0175] That is to say, when the first rate of the return-to-zero code protocol is 800 kbps, if the refresh frequency is to reach 40 frames per second, the number of LED light-emitting elements connected in series in each LED light string needs to be no more than 833 (the first number).

[0176] In a possible implementation, the LED light-emitting elements in the LED display screen in the prior art are all fixed and cannot be replaced arbitrarily. In this embodiment, the number of LED light-emitting elements in each LED light string can be dynamically changed online, and the reason for being able to replace the damaged LED light-emitting elements at any time is that the continuous transmission device in this embodiment is a readable and writable device. Specifically, a readable and writable memory is provided in the continuous transmission device, and the first continuous transmission number configured in the continuous transmission device is written into the readable and writable memory;

[0177] When the continuous transmission device is configured to retain the first continuous transmission number of control signals according to the currently configured first continuous transmission number, it is specifically configured as:

[0178] Read the written first continuous transmission number from the readable and writable memory, and retain the first continuous transmission number of control signals in the received control signal sequence according to the read first continuous transmission number.

[0179] In a possible implementation, after the reconfigurable LED display screen is built and before it is used, the first continuous transmission number of each continuous transmission device in the reconfigurable LED display screen is initialized and configured in the following manner:

[0180] For each continuous transmission device in the reconfigurable LED display screen, receive the first continuous transmission configuration parameter initialized and configured for the continuous transmission device from the control terminal in the LED display unit where the continuous transmission device is located through the serial port protocol; wherein, the first continuous transmission configuration parameter contains the initialized first continuous transmission number;

[0181] Write the first continuous transmission number contained in the first continuous transmission configuration parameter into the readable and writable memory of the continuous transmission device to configure the initialization continuous transmission parameters of the continuous transmission device.

[0182] In a possible implementation, during the use of the reconfigurable LED display screen, when the user needs to dynamically change the number of LED light-emitting elements connected in series in any one LED light string in the reconfigurable LED display screen, and / or replace the damaged LED light-emitting elements in any one LED light string, the user can reconfigure the first continuous transmission number configured in the continuous transmission device online, so as to realize the reconstruction of the LED display screen.

[0183] Specifically, during the use of the reconfigurable LED display screen, for any one LED display unit in the reconfigurable LED display screen, if there is a change in at least one LED light-emitting element connected in series in the LED light string in the LED display unit (including increasing the number of LED light-emitting elements connected in series in the LED light string, decreasing the number of LED light-emitting elements connected in series in the LED light string, or replacing a damaged LED light-emitting element in the LED light string), then through the following method, the first continuation transmission number in each continuation transmission device in the LED display unit is configured online:

[0184] For each continuation transmission device in the LED display unit, receive the first continuation transmission configuration parameter reconfigured for the continuation transmission device from the control end in the LED display unit through the serial port protocol; wherein, the reconfigured first continuation transmission configuration parameter includes the first continuation transmission number reconfigured online for the continuation transmission device; the first continuation transmission number reconfigured online for the continuation transmission device is equal to the number of LED light-emitting elements currently connected in series in the LED light string where the continuation transmission device is located;

[0185] Write the first continuation transmission number included in the first continuation transmission configuration parameter into the readable and writable memory of the continuation transmission device, and use the first continuation transmission number reconfigured online to replace the first continuation transmission number stored in the readable and writable memory, so as to update the first continuation transmission number in the continuation transmission device online.

[0186] Similarly, in a possible implementation manner, the second continuation transmission number configured in the continuation transmission device on the main signal line is written into the readable and writable memory;

[0187] When the continuation transmission device is configured to retain the first second continuation transmission number of control signals according to the second continuation transmission number configured by itself, it is specifically configured as:

[0188] Read the written second continuation transmission number from the readable and writable memory, and retain the first second continuation transmission number of control signals in the received control signal sequence according to the read second continuation transmission number.

[0189] In a possible implementation manner, after the reconfigurable LED display screen is built and before use, the second continuation transmission number of the continuation transmission device located on the main signal line in the reconfigurable LED display screen is initialized and configured through the following method:

[0190] For each continuation transmission device located on the main signal line in the reconfigurable LED display screen, receive the second continuation transmission configuration parameter initialized and configured for the continuation transmission device from the control end in the LED display unit where the continuation transmission device is located through the serial port protocol; wherein, the second continuation transmission configuration parameter includes the initialized second continuation transmission number;

[0191] Write the second resumption number included in the second resumption configuration parameter into the readable and writable memory of the resumption device, so as to perform initialization resumption parameter configuration on the resumption device.

[0192] In a possible implementation manner, during the use of the reconfigurable LED display screen, when a user needs to dynamically change the number of LED light-emitting elements connected in series in any one LED light string in the reconfigurable LED display screen, and / or replace a damaged LED light-emitting element in any one LED light string, the user can reconfigure the second resumption number configured in the resumption device on the main signal line online, so as to realize the reconstruction of the LED display screen.

[0193] Specifically, during the use of the reconfigurable LED display screen, for any one LED display unit in the reconfigurable LED display screen, if there is a change in the number of LED light-emitting elements connected in series in at least one LED light string in the LED display unit (including increasing the number of LED light-emitting elements connected in series in the LED light string, decreasing the number of LED light-emitting elements connected in series in the LED light string, or replacing a damaged LED light-emitting element in the LED light string), then through the following method, the second resumption number in each resumption device located on the main signal line in the LED display unit is configured online:

[0194] For each resumption device located on the main signal line in the LED display unit, receive the reconfigured second resumption configuration parameter for the resumption device from the control end in the LED display unit through the serial port protocol; wherein, the reconfigured second resumption configuration parameter includes the second resumption number reconfigured online for the resumption device; the second resumption number reconfigured online for the resumption device is equal to the sum of the first resumption number reconfigured online for the resumption device and the total number of LED light-emitting elements currently connected in series in each LED light string on the branch signal line connected to the resumption device;

[0195] Write the second resumption number included in the second resumption configuration parameter into the readable and writable memory of the resumption device, and use the second resumption number reconfigured online to replace the second resumption number stored in the readable and writable memory, so as to update the second resumption number in the resumption device online.

[0196] In this embodiment, in the LED display unit, the resumption device located on the main signal line directly receives the first resumption configuration parameter and / or the second resumption configuration parameter sent by the control end through the main signal line.

[0197] The resumption device located on the branch signal line is used to receive the first resumption configuration parameter sent by the control end through the main signal line and the branch signal line.

[0198] In this embodiment, considering that existing resume transfer devices are usually read-only devices, that is, the resume transfer numbers in the resume transfer devices are hard-coded at the factory and cannot be edited or modified. In this way, it is impossible to achieve the effect of adding, reducing, or replacing LED light-emitting elements in the LED light string according to the usage requirements. Based on this, a rewritable memory is built into the resume transfer device in this embodiment. The rewritable memory can specifically be a FLASH memory. Through the rewritable memory built into the resume transfer device, the user can edit and modify the first resume transfer number and the second resume transfer number of the resume transfer device on the main signal line, and edit and modify the first resume transfer number of the resume transfer device on the branch signal line, so as to be able to add, reduce, or replace LED light-emitting elements in the LED light string at will according to the usage requirements.

[0199] Considering the actual application environment, there may be multiple resume transfer devices in the LED display unit, and there may be problems such as physical isolation or electrical interference between these resume transfer devices. Directly broadcasting the same resume transfer configuration parameters (including the first resume transfer configuration parameters and the second resume transfer configuration parameters) to all resume transfer devices may not ensure that each resume transfer device can receive them accurately and without error. Therefore, a method of sending in batches is adopted. For each resume transfer device that needs to update the first resume transfer number and / or the second resume transfer number, a complete serial command (that is, the first resume transfer configuration parameters and / or the second resume transfer configuration parameters) is sent separately through the serial port protocol. In this way, even if a certain resume transfer device fails to successfully receive the first resume transfer configuration parameters and / or the second resume transfer configuration parameters due to reasons, it will not affect the update of the first resume transfer number and / or the second resume transfer number of other resume transfer devices.

[0200] In a specific embodiment, when the control end in the LED display unit configures the first resume transfer number and / or the second resume transfer number of each resume transfer device on the main signal line, it is sent sequentially and separately through the serial port protocol along the main signal line in the order from the end resume transfer device (i.e., the resume transfer device at the end of the main line) to the head resume transfer device (i.e., the resume transfer device at the head of the main line).

[0201] When the control end in the LED display unit configures the first resume transfer number of each resume transfer device on the branch signal line, it is sent sequentially and separately through the serial port protocol along the main signal line, that is, the branch signal line, in the order from the branch end resume transfer device to the branch head resume transfer device.

[0202] In this embodiment, as long as any one of the LED light-emitting elements connected in series in an LED light string in the reconfigurable LED display screen is changed online (including changing the number of LED light-emitting elements and replacing damaged LED light-emitting elements), it is necessary to reconfigure the first resume transfer number and the second resume transfer number of each resume transfer device located on the main signal line online, and it is necessary to reconfigure the first resume transfer number of each resume transfer device located on the branch signal line online.

[0203] In a possible implementation, the first resume configuration parameter includes, in sequential order: a first start symbol, a first command symbol, a first resume number, a first check code, and a first end symbol; wherein, the first check code is obtained by the control terminal performing an exclusive OR operation on one or more of the data of the first start symbol, the first command symbol, the first resume number, and the first end symbol;

[0204] For each resume device in the LED display unit (including resume devices located on the main signal line and resume devices located on the branch signal line), writing the first resume number included in the first resume configuration parameter into the readable and writable memory of the resume device includes:

[0205] After receiving the first resume configuration parameter sent by the control terminal for the resume device, performing an exclusive OR operation on one or more of the data of the first start symbol, the first command symbol, the first resume number, and the first end symbol included in the received first resume configuration parameter to obtain a first exclusive OR value;

[0206] Determine whether the first exclusive OR value is consistent with the first check code. If the first exclusive OR value is consistent with the first check code, write the first resume number included in the first resume configuration parameter into the readable and writable memory of the resume device; if the first exclusive OR value is inconsistent with the check code, stop writing the first resume number included in the first resume configuration parameter into the readable and writable memory of the resume device.

[0207] In this embodiment, the first start symbol is used to mark the starting position of the first resume configuration parameter; the first command symbol is used to instruct the resume device to configure the first resume number; the first resume number is the target value configured for the resume device; the first check code is used to verify the correctness of the first resume configuration parameter; the first end symbol is used to indicate the termination of the entire first resume configuration parameter.

[0208] Similarly, the second resume configuration parameter includes, in sequential order: a second start symbol, a second command symbol, a second resume number, a second check code, and a second end symbol; wherein, the second check code is obtained by the control terminal performing an exclusive OR operation on one or more of the data of the second start symbol, the second command symbol, the second resume number, and the second end symbol;

[0209] For the resume device located on the main signal line in the LED display unit, writing the second resume number included in the second resume configuration parameter into the readable and writable memory of the resume device includes:

[0210] After receiving the second resume configuration parameter sent by the control terminal for the resume device, performing an exclusive OR operation on one or more of the data of the second start symbol, the second command symbol, the second resume number, and the second end symbol included in the received second resume configuration parameter to obtain a second exclusive OR value;

[0211] Determine whether the second exclusive OR value is consistent with the second check code. If the second exclusive OR value is consistent with the second check code, write the second resume number included in the second resume configuration parameter into the readable and writable memory of the resume device; if the second exclusive OR value is inconsistent with the second check code, stop writing the second resume number included in the second resume configuration parameter into the readable and writable memory of the resume device.

[0212] In this embodiment, the second start symbol is used to mark the starting position of the second resume configuration parameter; the second command symbol is used to instruct the resume device to configure the second resume number; the second resume number is the target value configured for the resume device; the second check code is used to verify the correctness of the second resume configuration parameter; the second end symbol is used to indicate the termination of the entire second resume configuration parameter.

[0213] In this embodiment, in order to improve the reliability during the resume number configuration process, a simple error detection method is adopted, that is, using the exclusive OR operation result between the transmitted characters as the check code. The receiving party can recalculate the exclusive OR value according to the same algorithm and compare it with the received check code for consistency to determine whether the resume configuration parameter has changed during transmission.

[0214] It should be noted that the characters used by the control end to calculate the first check code and / or the second check code are the same as the characters used by the resume device to calculate the first exclusive OR value and / or the second check code. For example, when the characters used by the control end to calculate the first check code are the first start symbol, the first command symbol, the first resume number, and the first end symbol, then the characters used by the resume device to calculate the first exclusive OR value are also the first start symbol, the first command symbol, the first resume number, and the first end symbol.

[0215] In a possible implementation, when the reconfigurable LED display screen is in actual use, in the reconfigurable LED display screen, the distance between two physically adjacent LED lamp strings is a first distance; the distance between any two adjacent LEDs in an LED lamp string is a second distance; wherein, two physically adjacent LED lamp strings include: two physically adjacent LED lamp strings in the same LED display unit, and / or, two physically adjacent LED lamp strings in different LED display units; the distance between two physically adjacent LEDs in an LED lamp string is the second distance; the first distance and the second distance are dynamically adjusted according to the current usage scenario of the reconfigurable LED display screen; the usage scenario includes any one or more of the user viewing distance, the display screen resolution, and the display screen size; wherein, the user viewing distance is positively correlated with the first distance and the second distance; the display screen resolution is negatively correlated with the first distance and the second distance; the display screen size is positively correlated with the first distance and the second distance; the first distance and the second distance may be the same or different.

[0216] When the reconfigurable LED display screen includes multiple LED display units, the multiple LED display units are arranged according to a preset geometric rule, and the preset geometric rule is dynamically adjusted based on the required display screen specifications. Among them, the preset geometric rule includes but is not limited to a rectangular array, a honeycomb array, or a circular array.

[0217] In a possible implementation, for each frame of image to be currently displayed on the reconfigurable LED display screen, when the reconfigurable LED display screen includes one LED display unit, the control signal sequence of this frame of image is included in the control end; when the reconfigurable LED display screen includes at least two LED display units, the control signal sequences of the partial images corresponding to their own physical positions in this frame of image are respectively included in the control ends of each LED display unit.

[0218] In this embodiment, the reconfigurable LED display screen can display each frame of image in sequence according to the timing of each frame of image to be currently displayed.

[0219] For each frame of image to be currently displayed, when the reconfigurable LED display screen includes one LED display unit, this frame of image is completely displayed through this LED display unit.

[0220] When the reconfigurable LED display screen includes at least two LED display units, it is necessary to cooperate with each other through these at least two LED display units to synchronously and completely display this frame of image. Then each LED display unit needs to synchronously display the partial image corresponding to its own physical position in this complete frame of image, so that the entire reconfigurable LED display screen synchronously displays this complete frame of image.

[0221] In a possible implementation, the LED light-emitting elements at both ends of the LED light string are the head LED light-emitting element and the tail LED light-emitting element respectively, and the head LED light-emitting element is connected to the continuation device;

[0222] When the continuation device is configured to control the LED light string where the continuation device is located by using the reserved control signal, it is specifically configured as follows:

[0223] Based on the return-to-zero code protocol, transmit the reserved first several continuation control signals to the head LED light-emitting element connected to the continuation device;

[0224] Among them, the LED light-emitting element is configured to: when the LED light-emitting element works normally, reserve the control signal for controlling itself, use the reserved control signal of itself to control the LED light-emitting element, and transmit the remaining control signals to the next LED light-emitting element.

[0225] In this embodiment, after the continuation device reserves the first several continuation control signals, it transmits all the reserved control signals of itself to the head LED light-emitting element through the auxiliary signal line by using the return-to-zero code protocol. The head LED light-emitting element is configured to: when the LED light-emitting element works normally, receive the first several continuation control signals from the continuation device, reserve its own control signal from the received control signals, and use its own control signal to control its own display condition, and transmit the remaining control signals to the next LED light-emitting element;

[0226] The middle LED light-emitting element (i.e., the non-head LED light-emitting element and the non-tail LED light-emitting element) is configured to: when the LED light-emitting element works normally, reserve its own control signal from the control signals transmitted from the previous LED light-emitting element, and use its own control signal to control its own display condition, and transmit the remaining control signals to the next LED light-emitting element;

[0227] The tail LED light-emitting element is configured to: when the LED light-emitting element works normally, reserve its own control signal from the control signals transmitted from the previous LED light-emitting element, and use its own control signal to control its own display condition.

[0228] In this embodiment, the next LED light-emitting element of an LED light-emitting element refers to: among the LED light-emitting elements connected in series with this LED light-emitting element, according to the arrangement order from the first-end LED light-emitting element to the last-end LED light-emitting element, the adjacent LED light-emitting element located after (downstream) this LED light-emitting element. The previous LED light-emitting element of an LED light-emitting element refers to: among the LED light-emitting elements connected in series with this LED light-emitting element, according to the arrangement order from the first-end LED light-emitting element to the last-end LED light-emitting element, the adjacent LED light-emitting element located before (upstream) this LED light-emitting element.

[0229] Exemplarily, as Figure 2 shown, taking the LED string where the data transfer device C1 is located as an example for illustration, the control signals retained by this data transfer device C1 include: X(D11); X(D12); X(D13). This data transfer device C1 transmits the retained control signals X(D11); X(D12); X(D13) to the LED light-emitting element D11 through the return-to-zero code protocol via the auxiliary signal line. This LED light-emitting element D11 retains its own control signal X(D11), and uses this control signal X(D11) to perform display control on itself, and further transmits the remaining control signals X(D12) and X(D13) to the LED light-emitting element D12 through the return-to-zero code protocol via the auxiliary signal line. The LED light-emitting element D12 retains its own control signal X(D12), and uses this control signal X(D12) to perform display control on itself, and further transmits the remaining control signal X(D13) to the LED light-emitting element D13 through the return-to-zero code protocol via the auxiliary signal line. The LED light-emitting element D13 retains its own control signal X(D13), and uses this control signal X(D13) to perform display control on itself.

[0230] Based on the same technical concept, an embodiment of the present application further provides a display method. The method is applied to a reconfigurable LED display screen. The reconfigurable LED display screen includes at least one independent LED display unit; the LED display unit includes a control terminal, a main signal line, and a plurality of expandable LED strings. The LED string includes a data transfer device arranged at the head and LED light-emitting elements sequentially connected in series with this data transfer device. Two adjacent LED light-emitting elements in the LED string are detachably connected in series together to be used for changing the LED light-emitting elements connected in series in the LED string; the control terminal and the data transfer devices in a plurality of LED strings are sequentially connected in series on the main signal line. Two adjacent data transfer devices on the main signal line are detachably connected in series together to be used for changing the data transfer devices connected in series on the main signal line; the method includes the following steps:

[0231] S101: The control terminal transmits the control signal sequence configured for the current LED display unit where the control terminal is located to the continuation device connected in series with the control terminal; wherein, the control signal sequence includes the control signals of each LED light-emitting element in the LED display unit where the control terminal is located, and the arrangement order of each control signal is determined based on the arrangement order of each continuation device in the LED display unit and the arrangement order of each LED light-emitting element in the LED light string.

[0232] S102: After receiving the control signal sequence, the continuation device retains the first several control signals according to the currently configured first continuation number, controls the LED light string where the continuation device is located using the retained control signals, and continues to transmit the remaining control signal sequence to the next continuation device; wherein, the first continuation number configured in the continuation device is the number of LED light-emitting elements connected in series in the LED light string where the continuation device is located.

[0233] Optionally, a first extended input interface and a first extended output interface are provided on each of the LED light-emitting elements.

[0234] Between two adjacent LED light-emitting elements in the LED light string, electrical connection or separation is performed through the first extended input interface on one of the LED light-emitting elements and the first extended output interface on the other LED light-emitting element, so as to change the LED light-emitting elements connected in series in the LED light string.

[0235] The first extended output interface is reserved on the LED light-emitting element at the tail of the LED light string, and this first extended output interface is used to extend and connect the first extended input interface of other LED light-emitting elements in series at the tail of the LED light string.

[0236] Optionally, the LED display unit further includes a plurality of branch signal lines, and each continuation device on the main signal line is respectively detachably connected to different branch signal lines; the continuation devices in some of the LED light strings in the LED display screen are connected in series on the main signal line. For the remaining LED light strings, at least one continuation device in the remaining LED light strings is sequentially connected in series on each branch signal line; the adjacent continuation devices on the branch signal line are detachably connected in series together, so as to change the continuation devices connected in series on the branch signal line.

[0237] Optionally, a second extended input interface and a second extended output interface are provided on each of the continuation devices.

[0238] On the main signal line and / or the branch signal line, between two adjacent continuation devices, electrical connection or separation is performed through a second extended input interface located on one of the continuation devices and a second extended output interface located on the other continuation device, so as to change the continuation devices connected in series on the main signal line and / or the branch signal line;

[0239] On the main signal line and / or the branch signal line, a second extended output interface is reserved on the continuation device at the tail, and this second extended output interface is used to extend and connect a second extended input interface of other continuation devices in series on the continuation device at the tail on the main signal line and / or the branch signal line.

[0240] Optionally, the control signal is a color control signal, and the color control signal is a signal with the first number of digits; the control signal sequence is transmitted through a return-to-zero code protocol, and the signal transmission rate of the return-to-zero code protocol is the first rate;

[0241] The number of LED light-emitting elements connected in series in each LED light string does not exceed the first number, so that the refresh frequency of the reconfigurable LED display screen reaches the image of the target number of frames per second; wherein, the first number is the ratio of the first data volume to be transmitted per frame to the first number of digits, and the first data volume is the ratio of the first rate to the target number of frames.

[0242] Optionally, a readable and writable memory is provided in the continuation device, and the first continuation number configured in the continuation device is written into the readable and writable memory;

[0243] After receiving the control signal sequence, the continuation device, according to the currently configured first continuation number, retains the first previous continuation number of control signals, including:

[0244] Read the written first continuation number from the readable and writable memory, and according to the read first continuation number, retain the first previous continuation number of control signals in the received control signal sequence.

[0245] Optionally, before the reconfigurable LED display screen is used, the first continuation numbers of each continuation device in the reconfigurable LED display screen are initialized and configured in the following manner:

[0246] For each continuation device in the reconfigurable LED display screen, receive, through the serial port protocol, the first continuation configuration parameter initialized and configured for this continuation device from the control ends in the LED display unit where this continuation device is located; wherein, the first continuation configuration parameter contains the initialized first continuation number;

[0247] Write the first resumption number included in the first resumption configuration parameter into the readable and writable memory of the resumption device to initialize the resumption parameter configuration of the resumption device.

[0248] Optionally, during the use of the reconfigurable LED display screen, for any LED display unit in the reconfigurable LED display screen, if there is a change in the LED light-emitting elements connected in series in at least one LED light string in the LED display unit, then the first resumption number in each resumption device in the LED display unit is configured online in the following manner:

[0249] For each resumption device in the LED display unit, receive the first resumption configuration parameter reconfigured for the resumption device from the control end in the LED display unit through the serial port protocol; wherein, the first resumption configuration parameter reconfigured includes the first resumption number reconfigured online for the resumption device; the first resumption number reconfigured online for the resumption device is equal to the number of LED light-emitting elements currently connected in series in the LED light string where the resumption device is located;

[0250] Write the first resumption number included in the first resumption configuration parameter into the readable and writable memory of the resumption device, and use the first resumption number reconfigured online to replace the first resumption number stored in the readable and writable memory to update the first resumption number in the resumption device online.

[0251] Optionally, the first resumption configuration parameter includes, in sequential order: a first start character, a first command character, a first resumption number, a first check code, and a first end character; wherein, the first check code is obtained by performing an exclusive OR operation on one or more of the data of the first start character, the first command character, the first resumption number, and the first end character by the control end;

[0252] The step of writing the first resumption number included in the first resumption configuration parameter into the readable and writable memory of the resumption device includes:

[0253] After receiving the first resumption configuration parameter sent by the control end for the resumption device, perform an exclusive OR operation on one or more of the data of the first start character, the first command character, the first resumption number, and the first end character included in the received first resumption configuration parameter to obtain a first exclusive OR value;

[0254] Determine whether the first exclusive OR value is consistent with the first check code. If the first exclusive OR value is consistent with the first check code, write the first number of continued transmissions included in the first continued transmission configuration parameter into the readable and writable memory of the continued transmission device; if the first exclusive OR value is inconsistent with the first check code, stop writing the first number of continued transmissions included in the first continued transmission configuration parameter into the readable and writable memory of the continued transmission device.

[0255] Optionally, if the continued transmission devices in the multiple LED light strings included in the LED display unit are all connected in series on the main signal line, the continued transmission devices at both ends among the continued transmission devices connected in series on the main signal line are respectively used as the head-end continued transmission device and the end-end continued transmission device; the head-end continued transmission device is connected in series with the control end;

[0256] After receiving the control signal sequence, the continued transmission device, according to the currently configured first number of continued transmissions, retains the first several control signals in the front, and uses the retained control signals to control the LED light string where the continued transmission device is located, and continues to transmit the remaining control signal sequence to the next continued transmission device, including:

[0257] When the continued transmission device is the head-end continued transmission device, receive the control signal sequence from the control end in the LED display unit where the continued transmission device is located, retain the first several control signals in the front of the control signal sequence according to its own configured first number of continued transmissions, and use the retained control signals to control the LED light string where the head-end continued transmission device is located, and continue to transmit the remaining control signal sequence to the next continued transmission device of the head-end continued transmission device;

[0258] When the continued transmission device is a non-head-end continued transmission device, receive the transmitted control signal sequence from the previous continued transmission device of the non-head-end continued transmission device, retain the first several control signals in the front of the control signal sequence according to its own configured first number of continued transmissions, and use the retained control signals to control the LED light string where the non-head-end continued transmission device is located, and if the non-head-end continued transmission device is not the end-end continued transmission device, transmit the remaining control signal sequence to the next continued transmission device of the non-head-end continued transmission device, if the non-head-end continued transmission device is the end-end continued transmission device, the control signal sequence in the LED display unit where the continued transmission device is located is transmitted completely.

[0259] Optionally, the continuation devices located at both ends among the continuation devices connected in series on the branch signal line are respectively used as the branch head-end continuation device and the branch tail-end continuation device, and the branch head-end continuation device is connected to the continuation device on the main signal line; in the control signal sequence configured for the LED display unit where the control end is located in the control end, the arrangement order of each control signal is determined based on the arrangement order of each of the continuation devices on the main signal line on the main signal line, the arrangement order of each of the continuation devices on each of the branch signal lines on the branch signal line, and the arrangement order of each LED light-emitting element in the LED light string;

[0260] After receiving the control signal sequence, the continuation device retains the first several continuation control signals according to the currently configured first continuation number, and uses the retained control signals to control the LED light string where the continuation device is located, and continues to transmit the remaining control signal sequence to the next continuation device, including:

[0261] When the continuation device is the continuation device on the main signal line, after receiving the control signal sequence, according to the second continuation number configured by itself, it retains the first several second continuation control signals, transmits the remaining control signal sequence through the main signal line to the next continuation device on the main signal line, and according to the first continuation number configured by itself, retains the first several first continuation control signals, and uses the retained control signals to control the LED light string where the continuation device is located, and transmits the remaining control signal sequence through the branch signal line to the branch head-end continuation device on the branch signal line; wherein, the second continuation number configured in the continuation device on the main signal line is the sum of the first continuation number and the total number of LED light-emitting elements connected in series in each LED light string on the branch signal line connected to the continuation device;

[0262] When the continuation device is the continuation device on the branch signal line, after receiving the control signal sequence, it retains the first several first continuation control signals, uses the retained control signals to control the LED light string where the continuation device is located, and continues to transmit the remaining control signal sequence through the branch signal line to the next continuation device on the branch signal line.

[0263] Optionally, the continuation devices located at both ends among the continuation devices connected in series on the main signal line are respectively used as the main line head-end continuation device and the main line tail-end continuation device, and the main line head-end continuation device is connected in series with the control end;

[0264] When the continuation transmission device is the continuation transmission device on the main signal line, after receiving the control signal sequence, according to the second continuation transmission number configured by itself, the first several control signals are reserved, the remaining control signal sequence is transmitted through the main signal line to the next continuation transmission device on the main signal line of this continuation transmission device, and according to the first continuation transmission number configured by itself, the first several control signals are reserved, and the reserved control signals are used to control the LED string where this continuation transmission device is located, and the remaining control signal sequence is transmitted through the branch signal line to the branch head continuation transmission device on the branch signal line, including:

[0265] When the continuation transmission device is the main line head continuation transmission device, a control signal sequence is received from the control terminal in the LED display unit where this continuation transmission device is located. According to the second continuation transmission number configured by itself, the first several control signals in the control signal sequence are reserved, the remaining control signal sequence is transmitted through the main signal line to the next continuation transmission device on the main signal line of this continuation transmission device, and according to the first continuation transmission number configured by itself, the first several control signals are reserved from the second several control signals reserved by itself, and the reserved control signals are used to control the LED string where this continuation transmission device is located, and the remaining control signal sequence in the second several control signals reserved by itself is transmitted through the branch signal line connected to this continuation transmission device to the branch head continuation transmission device on this branch signal line;

[0266] When the continuation transmission device is a non-head main line continuation transmission device, a transmitted control signal sequence is received from the previous continuation transmission device on the main signal line of this non-head main line continuation transmission device. According to the second continuation transmission number configured by itself, the first several control signals in the control signal sequence are reserved. If this non-head main line continuation transmission device is not the main line end continuation transmission device, the remaining control signal sequence is transmitted to the next continuation transmission device on the main signal line of this non-head main line continuation transmission device. If this non-head main line continuation transmission device is the main line end continuation transmission device, the control signal sequence on the main signal line where this continuation transmission device is located is transmitted completely; and according to the first continuation transmission number configured by itself, the first several control signals are reserved from the second several control signals reserved by itself, and the reserved control signals are used to control the LED string where this continuation transmission device is located, and the remaining control signal sequence in the second several control signals reserved by itself is transmitted through the branch signal line connected to this continuation transmission device to the branch head continuation transmission device on this branch signal line.

[0267] Optionally, the LED light-emitting elements at both ends of the LED string are the head LED light-emitting element and the end LED light-emitting element respectively, and the head LED light-emitting element is connected to the continuation transmission device;

[0268] Controlling the LED light string where the resume transmission device is located by using the reserved control signal includes:

[0269] Based on the return-to-zero code protocol, transmitting the reserved first several resume transmission control signals to the first-end LED light-emitting element connected to the resume transmission device;

[0270] For each LED light-emitting element, when the LED light-emitting element is operating normally, reserve the control signal for controlling itself, use the reserved control signal of itself to control the LED light-emitting element, and transmit the remaining control signals to the next LED light-emitting element.

[0271] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described display method can refer to the corresponding process in the foregoing embodiment of the reconfigurable LED display screen, and will not be described herein again.

[0272] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A reconfigurable LED display screen, characterized in that, The reconfigurable LED display screen includes at least one independent LED display unit; the LED display unit includes a control terminal, a main signal line, and a plurality of expandable LED lamp strings. The LED lamp string includes a continuation device provided at the head and LED light-emitting elements sequentially connected in series with the continuation device. Two adjacent LED light-emitting elements in the LED lamp string are detachably connected in series to change the LED light-emitting elements connected in series in the LED lamp string; the control terminal and the continuation devices in a plurality of LED lamp strings are sequentially connected in series on the main signal line, and two adjacent continuation devices on the main signal line are detachably connected in series to change the continuation devices connected in series on the main signal line. The control terminal is configured to: transmit the control signal sequence currently configured for the LED display unit where the control terminal is located to the continuation device connected in series with the control terminal; wherein, the control signal sequence includes the control signals of each LED light-emitting element in the LED display unit where the control terminal is located, and the arrangement order of each control signal is determined based on the arrangement order of each continuation device in the LED display unit and the arrangement order of each LED light-emitting element in the LED lamp string. The continuation device is configured to: after receiving the control signal sequence, according to the currently configured first continuation number, retain the first continuation number of control signals at the front, and use the retained control signals to control the LED lamp string where the continuation device is located, and continue to transmit the remaining control signal sequence to the next continuation device; wherein, the first continuation number configured in the continuation device is the number of LED light-emitting elements connected in series in the LED lamp string where the continuation device is located.

2. The reconfigurable LED display according to claim 1, wherein Each of the LED light-emitting elements is provided with a first expansion input interface and a first expansion output interface. Between two adjacent LED light-emitting elements in the LED lamp string, electrical connection or separation is performed through the first expansion input interface on one of the LED light-emitting elements and the first expansion output interface on the other LED light-emitting element to change the LED light-emitting elements connected in series in the LED lamp string. The first expansion output interface is reserved on the LED light-emitting element located at the tail of the LED lamp string, and this first expansion output interface is used to expand and connect the first expansion input interfaces of other LED light-emitting elements in series at the tail of the LED lamp string.

3. The reconfigurable LED display screen according to claim 1, wherein The LED display unit further includes a plurality of branch signal lines. Each continuation device on the main signal line is respectively detachably connected to different branch signal lines; the continuation devices in some of the LED lamp strings in the LED display screen are connected in series on the main signal line. For the remaining LED lamp strings, at least one continuation device in the remaining LED lamp strings is sequentially connected in series on each branch signal line; two adjacent continuation devices on the branch signal line are detachably connected in series to change the continuation devices connected in series on the branch signal line.

4. The reconfigurable LED display screen according to claim 3, wherein Each of the continuation transfer devices is provided with a second extended input interface and a second extended output interface; On the main signal line and / or the branch signal line, between two adjacent continuation transfer devices, electrical connection or separation is achieved through the second extended input interface on one of the continuation transfer devices and the second extended output interface on the other continuation transfer device, so as to change the continuation transfer devices connected in series on the main signal line and / or the branch signal line; On the main signal line and / or the branch signal line, the second extended output interface is reserved on the continuation transfer device at the tail, and this second extended output interface is used to extend and connect the second extended input interface of other continuation transfer devices in series on the continuation transfer device at the tail on the main signal line and / or the branch signal line.

5. The reconfigurable LED display screen according to claim 1, wherein The control signal is a color control signal, and the color control signal is a signal with the first number of digits; the control signal sequence is transmitted through the return-to-zero code protocol, and the signal transmission rate of the return-to-zero code protocol is the first rate; The number of LED light-emitting elements connected in series in each LED light string does not exceed the first number, so that the refresh frequency of the reconfigurable LED display screen reaches the image of the target number of frames per second; wherein, the first number is the ratio of the first data volume to be transmitted per frame to the first number of digits, and the first data volume is the ratio of the first rate to the target number of frames.

6. The reconfigurable LED display according to claim 1, wherein A readable and writable memory is provided in the continuation transfer device, and the first continuation transfer number configured in the continuation transfer device is written into the readable and writable memory; When the continuation transfer device is configured to retain the first several continuation transfer control signals according to the currently configured first continuation transfer number, it is specifically configured as follows: Read the written first continuation transfer number from the readable and writable memory, and retain the first several continuation transfer control signals in the received control signal sequence according to the read first continuation transfer number.

7. The reconfigurable LED display screen according to claim 6, wherein Before the reconfigurable LED display screen is used, the first continuation transfer numbers of each continuation transfer device in the reconfigurable LED display screen are initialized and configured in the following manner: For each continuation transfer device in the reconfigurable LED display screen, receive the first continuation transfer configuration parameter initialized and configured for this continuation transfer device through the serial port protocol from the control terminal in the LED display unit where this continuation transfer device is located; wherein, the first continuation transfer configuration parameter includes the initialized first continuation transfer number; Write the first continuation transfer number included in the first continuation transfer configuration parameter into the readable and writable memory of this continuation transfer device to perform initialization and continuation transfer parameter configuration for this continuation transfer device.

8. The reconfigurable LED display screen according to claim 6, wherein During the use of the reconfigurable LED display screen, for any LED display unit in the reconfigurable LED display screen, if there is a change in the LED light-emitting elements connected in series in at least one LED light string in this LED display unit, then the first continuation transfer numbers in each continuation transfer device in this LED display unit are configured online in the following manner: For each resuming device in the LED display unit, receive, from the control terminals in the LED display unit through the serial port protocol, first resuming configuration parameters reconfigured for the resuming device; wherein, the first resuming configuration parameters reconfigured include a first resuming number reconfigured online for the resuming device; the first resuming number reconfigured online for the resuming device is equal to the number of currently serially connected LED light-emitting elements in the LED string where the resuming device is located; Write the first resuming number included in the first resuming configuration parameters into the readable and writable memory of the resuming device, and use the first resuming number reconfigured online to replace the first resuming number stored in the readable and writable memory, so as to update the first resuming number in the resuming device online.

9. The reconfigurable LED display screen according to claim 7 or 8, characterized in that, The first resuming configuration parameters include, in sequential order: a first start symbol, a first command symbol, a first resuming number, a first check code, a first end symbol; wherein, the first check code is obtained by performing an exclusive OR operation on one or more of the data of the first start symbol, the first command symbol, the first resuming number, and the first end symbol by the control terminal; The writing the first resuming number included in the first resuming configuration parameters into the readable and writable memory of the resuming device includes: After receiving the first resuming configuration parameters for the resuming device sent by the control terminal, perform an exclusive OR operation on one or more of the data of the first start symbol, the first command symbol, the first resuming number, and the first end symbol included in the received first resuming configuration parameters to obtain a first exclusive OR value; Determine whether the first exclusive OR value is consistent with the first check code. If the first exclusive OR value is consistent with the first check code, write the first resuming number included in the first resuming configuration parameters into the readable and writable memory of the resuming device; if the first exclusive OR value is inconsistent with the first check code, stop writing the first resuming number included in the first resuming configuration parameters into the readable and writable memory of the resuming device.

10. The reconfigurable LED display screen according to claim 1, characterized in that, If the resuming devices in multiple LED strings included in the LED display unit are all serially connected to the main signal line, the resuming devices at both ends among the resuming devices serially connected to the main signal line are respectively used as the head resuming device and the tail resuming device; the head resuming device is serially connected to the control terminal; When the resuming device is configured to, after receiving a control signal sequence, according to the currently configured first resuming number, retain the first first resuming number of control signals, and use the retained control signals to control the LED string where the resuming device is located, and continue to transmit the remaining control signal sequence to the next resuming device, it is specifically configured as: When the resuming device is the head resuming device, receive the control signal sequence from the control terminal in the LED display unit where the resuming device is located, retain the first first resuming number of control signals in the control signal sequence according to its own configured first resuming number, and use the retained control signals to control the LED string where the head resuming device is located, and continue to transmit the remaining control signal sequence to the next resuming device of the head resuming device; When the retransmission device is a non - first - end retransmission device, it receives the transmitted control signal sequence from the previous retransmission device of the non - first - end retransmission device. According to the first retransmission number configured by itself, it retains the first several control signals in the control signal sequence, and uses the retained control signals to control the LED string where the non - first - end retransmission device is located. And if the non - first - end retransmission device is not the end retransmission device, it transmits the remaining control signal sequence to the next retransmission device of the non - first - end retransmission device. If the non - first - end retransmission device is the end retransmission device, the transmission of the control signal sequence in the LED display unit where the retransmission device is located is completed.

11. The reconfigurable LED display screen according to claim 3, wherein The retransmission devices located at both ends among the retransmission devices connected in series on the branch signal line are respectively used as the branch first - end retransmission device and the branch end retransmission device. The branch first - end retransmission device is connected to the retransmission device on the main signal line. In the control signal sequence configured for the LED display unit where the control end is located, the arrangement order of each control signal is determined based on the arrangement order of each retransmission device on the main signal line on the main signal line, the arrangement order of each retransmission device on each branch signal line on the branch signal line, and the arrangement order of each LED light - emitting element in the LED string. When the retransmission device is configured to, after receiving the control signal sequence, according to the currently configured first retransmission number, retain the first several control signals, and use the retained control signals to control the LED string where the retransmission device is located, and then continue to transmit the remaining control signal sequence to the next retransmission device, it is specifically configured as follows: When the retransmission device is the retransmission device on the main signal line, after receiving the control signal sequence, according to the second retransmission number configured by itself, it retains the first several control signals, transmits the remaining control signal sequence through the main signal line to the next retransmission device on the main signal line, and according to the first retransmission number configured by itself, it retains the first several control signals, and uses the retained control signals to control the LED string where the retransmission device is located, and then transmits the remaining control signal sequence through the branch signal line to the branch first - end retransmission device on the branch signal line. Among them, the second retransmission number configured for the retransmission device on the main signal line is the sum of the first retransmission number and the total number of LED light - emitting elements connected in series in each LED string on the branch signal line connected to the retransmission device. When the retransmission device is the retransmission device on the branch signal line, after receiving the control signal sequence, it retains the first several control signals, and uses the retained control signals to control the LED string where the retransmission device is located, and then continues to transmit the remaining control signal sequence through the branch signal line to the next retransmission device on the branch signal line.

12. The reconfigurable LED display according to claim 11, wherein, The retransmission devices located at both ends among the retransmission devices connected in series on the main signal line are respectively used as the main - line first - end retransmission device and the main - line end retransmission device. The main - line first - end retransmission device is connected in series with the control end. The subsequent transmission device on the main signal line is configured to, after receiving a control signal sequence, retain the first subsequent transmission number of control signals according to its configured second subsequent transmission number, transmit the remaining control signal sequence to the next subsequent transmission device on the main signal line through the main signal line, and according to its configured first subsequent transmission number, retain the first subsequent transmission number of control signals, control the LED light string where the subsequent transmission device is located using the retained control signals, and transmit the remaining control signal sequence to the branch head subsequent transmission device on the branch signal line through the branch signal line, and is specifically configured as follows: When the subsequent transmission device is the main line head subsequent transmission device, it receives a control signal sequence from the control terminal in the LED display unit where the subsequent transmission device is located, retains the first subsequent transmission number of control signals in the control signal sequence according to its configured second subsequent transmission number, transmits the remaining control signal sequence to the next subsequent transmission device on the main signal line through the main signal line, and according to its configured first subsequent transmission number, retains the first subsequent transmission number of control signals from the second subsequent transmission number of control signals it retains itself, controls the LED light string where the subsequent transmission device is located using the retained control signals, and transmits the remaining control signal sequence in the second subsequent transmission number of control signals it retains itself to the branch head subsequent transmission device on the branch signal line through the branch signal line connected to the subsequent transmission device; When the subsequent transmission device is a non-head subsequent transmission device on the main line, it receives the transmitted control signal sequence from the previous subsequent transmission device on the main signal line where the non-head subsequent transmission device on the main line is located, retains the first subsequent transmission number of control signals in the control signal sequence according to its configured second subsequent transmission number. If the non-head subsequent transmission device on the main line is not the end subsequent transmission device on the main line, it transmits the remaining control signal sequence to the next subsequent transmission device on the main signal line where the non-head subsequent transmission device on the main line is located. If the non-head subsequent transmission device on the main line is the end subsequent transmission device on the main line, the transmission of the control signal sequence on the main signal line where the subsequent transmission device is located is completed; and according to its configured first subsequent transmission number, retains the first subsequent transmission number of control signals from the second subsequent transmission number of control signals it retains itself, controls the LED light string where the subsequent transmission device is located using the retained control signals, and transmits the remaining control signal sequence in the second subsequent transmission number of control signals it retains itself to the branch head subsequent transmission device on the branch signal line through the branch signal line connected to the subsequent transmission device.

13. The reconfigurable LED display screen according to claim 4, characterized in that The LED light-emitting elements at both ends of the LED light string are the head LED light-emitting element and the end LED light-emitting element respectively, and the head LED light-emitting element is connected to the subsequent transmission device; When the subsequent transmission device is configured to control the LED light string where the subsequent transmission device is located using the retained control signals, it is specifically configured as follows: Based on the return-to-zero code protocol, transmit the first subsequent transmission number of retained control signals to the head LED light-emitting element connected to the subsequent transmission device; Among them, the LED light-emitting element is configured to: when the LED light-emitting element operates normally, retain the control signal for controlling itself, use the retained control signal of itself to control the LED light-emitting element, and transmit the remaining control signals to the next LED light-emitting element.

14. A display method, characterized in that, The method is applied to a reconfigurable LED display screen, and the reconfigurable LED display screen includes at least one independent LED display unit; the LED display unit includes a control terminal, a main signal line, and a plurality of expandable LED light strings. The LED light string includes a continuation transmission device provided at the head and LED light-emitting elements connected in series with the continuation transmission device in sequence. Two adjacent LED light-emitting elements in the LED light string are detachably connected in series to be used for changing the LED light-emitting elements connected in series in the LED light string; the control terminal and the continuation transmission devices in a plurality of LED light strings are connected in series on the main signal line in sequence. Two adjacent continuation transmission devices on the main signal line are detachably connected in series to be used for changing the continuation transmission devices connected in series on the main signal line; the method includes: The control terminal transmits the control signal sequence configured for the current LED display unit where the control terminal is located to the continuation transmission device connected in series with the control terminal; among them, the control signal sequence includes the control signals of each LED light-emitting element in the LED display unit where the control terminal is located, and the arrangement order of each control signal is determined based on the arrangement order of each continuation transmission device in the LED display unit and the arrangement order of each LED light-emitting element in the LED light string. After receiving the control signal sequence, the continuation transmission device retains the first number of control signals in the front according to the currently configured first continuation transmission number, uses the retained control signals to control the LED light string where the continuation transmission device is located, and continues to transmit the remaining control signal sequence to the next continuation transmission device; among them, the first continuation transmission number configured in the continuation transmission device is the number of LED light-emitting elements connected in series in the LED light string where the continuation transmission device is located.

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