KR101364274B1 - Method for automatically setting up the location of the module in the led display - Google Patents

Abstract

An LED display including an upper control part and LED modules having a module control part includes a step of allowing the module control part of a standard module to require information from an adjacent module and to store the information of the adjacent module; a step of transmitting the information of the adjacent module to the upper control part of the LED display; and a step of estimating the spatial location information or arrangement coordinate of each module by using the information of the adjacent module in the upper control part.

Description

Method for automatically setting up the location of the module in the LED display}

The present invention relates to a method for automatically setting a module position in an LED sign, and more particularly, to a method for automatically setting a module position in an LED sign that does not require an identification number generation process.

LED is a semiconductor device made of Ga (gallium), P (phosphorus), As (arsenic) as a material, has the characteristics of a diode, and emits light energy of various wavelengths by applying an electrical signal. LEDs have the advantages of longer lifespans, faster response times (time to current to shine), and more shapes than bulbs.

Recently, LED display boards can express colorful and colorful colors, thereby attracting attention, and play an important role as advertising media.

1 is a view showing the configuration of an LED sign.

As shown in the figure, the LED signboard is configured by stacking the LED module as a base unit of the LED array connecting a plurality of LED lamps.

2 is a diagram illustrating a control method of a general LED sign.

As shown in the figure, a typical large LED display board divides the original image (SOURCE IMAGE) by the LED module unit in the upper control unit (or host computer), and implements the screen by transmitting it in accordance with the module position. Therefore, the upper control unit (system controller) that controls the display board may transmit the divided image to the corresponding module only when the position of each module in the display board is correctly recognized. Module address mapping means setting position information or array coordinates of the modules constituting the LED display board in the controller of the LED display board.

The module address mapping used in the existing LED signboard is largely done in the manual method and the semi-automatic method. Here, "address" refers to a unique address or identification information that can distinguish each module.

3 is a diagram illustrating a conventional module address mapping method using a 3 * 3 LED sign.

As shown in the figure, the number in the rectangle means the address of each module.

3- (a) relates to a module address mapping method in a manual manner, in which a manager directly designates a location of each module in an electric sign. Therefore, since the module can be arbitrarily arranged or partially replaced, it is easy to manufacture and manage the display board. However, when the number of modules of the electronic display board increases, there is a problem that the setting time of the module address or the error count of the mapping may increase initially.

3- (b) relates to a method of mapping module addresses in a semi-automatic manner, and stacking them in a zigzag form in order from module 1 to module 9 from the upper left to the right, such as a method of designating a stacking method in advance. to be. This method performs module address mapping itself very simply. However, since the lamination rules must be constant, it is difficult to use them for applications that require frequent disassembly or reassembly. In addition, when the arrangement structure is not a square such as a rhombus or a circle, there is a problem that it is difficult to apply the lamination rule.

The present invention has been proposed to solve the above problems, and an object thereof is to provide a method for automatically performing module address mapping by exchanging information between adjacent modules.

In order to solve the above technical problem, the method for automatically setting the module position in the LED display board according to the present invention includes a plurality of LED modules provided with a module control unit and an upper control unit, wherein the module control unit of the reference module is an adjacent module Requesting information from the user and storing the information of the adjacent module; Transmitting information of the adjacent module to the upper controller of the LED display board; And estimating spatial position information or arrangement coordinates of each module by using the information of the adjacent module in the upper controller.

The reference module of the method for automatically setting a module position in the LED display board according to an embodiment of the present invention is determined by the upper control unit of the LED display board, and the storing of information of the adjacent module is performed by the control of the upper control unit. Transmitting, by the module controller, an information request signal (ID REQUEST) to the adjacent module; Transmitting MAC address information from the adjacent module receiving the information request signal to the reference module; And storing the received MAC address information in a register.

The transmitting of the information request signal ID REQUEST of the method for automatically setting a module position in the LED display board according to an embodiment of the present invention may sequentially transmit the information request signal ID REQUEST to the adjacent module. It is preferable that the information request signal ID REQUEST is transmitted to the next adjacent module after the step of storing in the register is completed.

The transmitting of the information of the adjacent module of the method for automatically setting the module position in the LED display board according to an embodiment of the present invention may include: activating the TAP controller by the upper controller to transmit the information stored in the register; step; Outputting information stored in the register through a TDO under the control of the upper control unit; and outputting all the register information of the reference module and then deactivating a signal of the reference module.

The module position estimating step of the automatic module position setting method in the LED display board according to an embodiment of the present invention may include: searching for the adjacent module information having a condition corresponding to a set start position and a mapping direction; Assuming that the module with the adjacent module information retrieved for the starting position is a first module; Mapping using the neighbor module information of the first module; And if an error occurs during the mapping step, remapping another module having the adjacent module information searched for the starting position as the first module.

The present invention as described above, there is no restriction on the module order when setting the module position of the LED sign, there is an effect to facilitate the installation and reassembly of the sign.

1 is a view showing the configuration of an LED display.
2 is a diagram illustrating a control method of a general LED sign.
FIG. 3 is a diagram illustrating a conventional method for mapping an address using a 3 * 3 LED sign.
FIG. 4 is a diagram showing adjacent shapes between modules of a 3 * 3 size LED display board.
5 is a view showing a module connection method of the 3 * 3 size LED sign.
6 is a data flow diagram between each module in the 3 * 3 size LED display board and the upper controller.
7 is a view showing a detailed internal structure of the module of the LED sign.
8 is a diagram illustrating a MAC address of each module for explaining a process of storing neighboring module information according to an embodiment of the present invention.
9 is a diagram illustrating a process of storing a module address on the right side of a reference module in a process of storing adjacent module information according to an embodiment of the present invention.
10 is a diagram illustrating a step of transmitting adjacent module information according to an embodiment of the present invention.
FIG. 11 is a diagram illustrating a module position estimation step of an H type LED sign board in which seven modules are stacked according to one embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Terms including ordinals such as first, second, etc. may be used to describe various elements, but the elements are not limited by such terms. These terms are used only to distinguish one component from another.

When a component is said to be 'connected' or 'connected' to another component, it may be directly connected to or connected to that other component, but other components may be present in between. It should be understood that. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, or a combination thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The automatic module position setting method of the LED signboard according to the present invention includes a neighboring module information storing step (S10), a neighboring module information transmitting step (S20), and a module position estimating step (S30).

The adjacent module information storage step S10 is a step of exchanging mutual identification information between adjacent LED modules.

In the existing LED module address mapping, if internal identification information is generated from the first connected module according to the connection order between modules, the next module creates its own information by referring to the identification information of the previous module. In general, since the distance between the control unit and the LED signboard is far, a LAN-based communication method capable of high speed control and video signal transmission is used. Thus, when using ethernet, all of the billboard built-in modules each have a MAC address, which is a 48-bit unique address. The automatic module position setting method of the LED display board according to the present invention uses the MAC address as module identification information in the step of storing adjacent module information.

The neighboring module information storing step S10 is performed by each reference module requesting information from the neighboring module and storing the information.

FIG. 4 is a diagram showing adjacent shapes between modules of a 3 * 3 size LED display board.

As shown in the figure, the manner in which the modules are adjacent to each other in the 3 * 3 sized LED signboard having a square module, as shown in Figure 4- (a), whether the top, bottom, left and right modules of the reference module (b) is adjacent to each other As shown in Fig. 4- (b) and only considering the method (1-TYPE), it may be defined as a method (2-TYPE) to consider not only up, down, left and right, but also diagonally adjacent to the reference module (b). The shape of the LED signboard that can be set automatically is determined according to the adjacent range.In the diagonally connected line-shaped signboard, 1-TYPE that considers only the top, bottom, left and right modules of the reference module (b) is adjacent to the diagonal. Automatic setup is not possible because there is no However, 2-TYPE considering the diagonal neighborhood of the reference module (b) can be set automatically according to the adjacent range.

In order to explain in detail the steps of a module requesting information from a surrounding module and storing it, it is necessary to understand the connection of each module.

5 is a view showing a module connection method of the 3 * 3 size LED sign.

As shown in the figure, the modules of the 3 * 3 size LED signboard can be stacked and connected in a daisy chain (daisy chain) form.

6 is a data flow diagram between each module in the 3 * 3 size LED display board and the upper controller.

As shown in the figure, the upper controller controls each module and transmits data using a LAN. The upper controller performs a connection level or a board level test of the modules through the IEEE 1149.1 compatible signal. Since both CSMA / CD and 1149.1 schemes used in Ethernet require or support a data bus structure in the form of a system bus, the controller and the modules are connected by two buses as shown in FIG. 6. And based on the 2-TYPE neighbor type, each module includes a signal (ID request) for requesting information exchange with neighboring modules.

7 is a view showing a detailed internal structure of the module of the LED sign.

As shown in the figure, the module control unit inside the module sequentially activates a total of eight ID request signals for the adjacent modules according to a request of the upper control unit. Receiving the ID request signal, the module becomes the 1149.1 master to generate TMS and TCLK control signals, and transmits its MAC address information through the TDI signal line. The MAC address of the transmitted neighboring module is stored in a predetermined register, and after completion, the ID request signal is transmitted to the next neighboring module. The module stores its MAC address in the Base ID.

Basically, the order in which one module requests information from neighboring modules and stores it can be arbitrarily determined. However, since multiple modules cannot use the 1149.1 bus at the same time, only one base module and one adjacent module can be active at the same time. Therefore, the upper controller of the system should designate the operation order of the reference module. For this purpose, the controller must recognize the MAC addresses of the modules currently installed. If the number of modules is not large, the administrator can directly enter the MAC address of the modules. However, increasing the number can be very cumbersome and can cause malfunctions due to misunderstandings. Therefore, before starting to store the adjacent module information, the control unit must determine the MAC addresses of all the built-in modules by using a broadcasting method or a token packet, and configure the reference module operation sequence by tabulating them.

8 is a diagram illustrating a MAC address of each module for explaining a process of storing neighboring module information according to an embodiment of the present invention.

As shown in the figure, the MAC address of the reference module is 08-00-60-00-00-09.

9 is a diagram illustrating a process of storing a module address on the right side of a reference module in a process of storing neighboring module information according to an embodiment of the present invention.

As shown in the figure, the upper control unit selects a reference module (module enable), and the reference module starts the request for the adjacent module address in a predetermined order. The reference module activates the East ID request signal to store the MAC address of the module on the right. The module receiving the request signal reads its MAC address (08-00-60-00-00-1B) from the register and outputs it as TDI data with 1149.1 control signals (TMS, TCLK). At this time, since only the TAP controller of the reference module is enabled (TAP enable), only the reference module can operate according to the 1149.1 control signal.

The reference module stores ID data input in the register according to the TAP controller signal. At this time, the module control unit registers the position of the register through a decoder. The total information storage space per module is only 48bit * 9 = 54byte, and the time required to store one MAC address is several hundred clocks based on TCLK, so hardware cost and operation time are not a big problem.

 In the above manner, the method for automatically setting module positions of the LED display board according to the present invention stores adjacent module information.

The adjacent module information transmitting step S20 is a step of transmitting adjacent module information of each module stored in the adjacent module information storing step S10 to the upper controller. The order of neighbor module information transmission is controlled by the upper control section.

10 is a diagram illustrating a step of transmitting adjacent module information according to an embodiment of the present invention.

As shown in the figure, the MAC address of the adjacent module stored in each module is transmitted to the upper controller. The upper control unit specifies the information transmission order of each module.

In detail, the reference module selected by the upper controller enables the TAP controller to transmit the stored register value. The value stored in the register is output through the TDO by the 1149.1 control signals TMS and TCLK inputted from the upper control section. At this time, the position of the register to be output is determined in a predetermined order by the module controller (register selection). In FIG. 10, the second register information (East ID) is output, and the upper controller deactivates the reference module signal after reading all register information in the module.

In the above manner, the method for automatically setting module positions of the LED display board according to the present invention transmits adjacent module information.

The module position estimating step (S30) is a step of estimating the spatial position information or the array coordinate of each module based on the adjacent module information when the collection of the adjacent module information of all modules embedded in the LED display board is completed.

FIG. 11 is a diagram illustrating a module position estimation step of an H type LED sign board in which seven modules are stacked according to one embodiment of the present invention.

As shown in the figure, it is assumed that the seven modules of the figure consider only 1-TYPE neighbor information, and the information structure stored in module units is <ID _E , ID _W , ID _S , ID _N : ID _B >. do. Here, ID indicates module identification information corresponding to MAC address. If the ID information is displayed as X, it means that there is no neighbor module.

The first step in estimating the module location is to set the location and mapping direction in the signboard of the module where the mapping begins. In the example of the module estimating method shown in FIG. 11, it is assumed that the mapping starts from the left to the right in every row, using the module at which the mapping starts as the top left module. Such a rule can be arbitrarily converted according to the user.

Once the starting position and the mapping direction are determined, the search for the module that meets the conditions is started. First, since the first module is located at the top left, there are no adjacent modules between W and N. Based on this, if <-, X,-, X:-> is searched among adjacent module information, module 5 <X, X, 1, X: 5>, module 7 <X, X, 6, X: 7 > There are two things.

As shown in (a) of FIG. 11, if module 7 is the first module among the two modules 5 and 7, the ID _E of module 7 is X, and thus the right side of module 7 is an empty space. Able to know. If an empty space occurs, a dummy module is placed so that adjacent modules can know that the space is empty. Then the mapping starts again, and the remaining module, which is represented by X is ID _W , is the first line, so it searches for modules with ID _N of X. Among the remaining modules, only module 5 that meets the information (the first row has an ID _N of X) is module 5. Since module _E of module 5 is X, the first row places module 5 at the right side. The beginning of the second row is based on the ID _S information of the seventh module. Therefore, the sixth module is disposed on the left side of the second row. However, since ID _W is 2 in the information of module 6, it cannot be placed in the corresponding position. This means that the existing implications are wrong, canceling all deployments as far back as the most recent implication.

Therefore, relocate module 5 instead of 7 to the first leftmost module and remap. Therefore, the first row is placed module 5, X, 7 (Fig. 11 (C)), the second row by using the ID _S information of the module in the first row module 1-> module 2- It is arranged in order of> 6 modules (Fig. 11 (D)). In addition, it can be seen that the third row is arranged in the order of module 4-> module X-> module 3 (E). In this way, the spatial positional relationship between modules having adjacent module information can be automatically detected.

Through the above-described adjacent module information storage step (S10), adjacent module information transmission step (S20) and module position estimation step (S30), the upper control unit for controlling the signboard can accurately recognize the position of each module in the signboard. The divided video can be transmitted to the corresponding module.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined by the following claims.

Claims (7)

In the LED display panel including a plurality of LED modules and the upper control unit provided with a module control unit,
Requesting information from an adjacent module by the module controller of a reference module and storing information of the adjacent module;
Transmitting information of the adjacent module to the upper controller of the LED display board; And
Estimating spatial position information or arrangement coordinates of each module by using the information of the adjacent module in the upper control unit.
The method of claim 1,
The reference module is determined by the upper controller of the LED sign,
Storing the information of the adjacent module,
Transmitting, by the module controller, an information request signal (ID REQUEST) to the adjacent module under control of the upper controller;
Transmitting MAC address information from the adjacent module receiving the information request signal to the reference module; And
And storing the received MAC address information in a register.
3. The method of claim 2,
The transmitting of the information request signal ID REQUEST may include:
And transmitting the information request signal (ID REQUEST) to the adjacent module in sequence, and transmitting the information request signal (ID REQUEST) to the next adjacent module after the step of storing in the register is completed. How to set location automatically.
The method of claim 1,
Transmitting the information of the adjacent module,
Activating, by the upper controller, a TAP controller by the reference module to transmit information stored in a register;
Outputting information stored in the register through a TDO under control of the upper controller; and
Inactivating a signal of the reference module after outputting all the register information of the reference module.
The method of claim 1,
The module position estimation step,
Retrieving the adjacent module information having a condition corresponding to the set start position and mapping direction;
Assuming that the module having the adjacent module information retrieved for the starting position is a first module; and
And automatically mapping the module information using the adjacent module information of the first module.
6. The method of claim 5,
The module position estimation step,
If an error occurs during the mapping step, re-mapping another module having the adjacent module information found according to the start position as the first module, and remapping the module.
The method of claim 1,
The adjacent module,
Method for automatically setting the module position of the LED sign, characterized in that the module located in the upper, lower, left, right, and diagonal directions of the reference module.

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