KR102569630B1 - LED display board - Google Patents

Abstract

The present invention relates to an LED signboard having a black line correction function, and more particularly, to an LED sign board having a black line correction function that eliminates occurrence of a black line due to a height difference between adjacent cabinets. To this end, the first black line correction unit corrects the black line appearing in the edge area of the cabinet by mechanically adjusting the height of the cabinet unit, and the black line appearing in the edge area of the cabinet by adjusting the brightness of the edge area of the LED module disposed in the cabinet. Disclosed is an LED display board having a black line correction function, characterized in that it includes a second black line correction unit for correcting.

Description

LED display board with black line correction function {LED display board}

The present invention relates to an LED signboard with a black line correction function, and more particularly, to an LED sign board with a black line correction function to eliminate occurrence of a black line due to a height step between adjacent cabinets.

As shown in FIG. 1, since the integrated frame 2 to which the LED modules are attached is fixed to the wall fixing frame 4 made of aluminum bars in the conventional LED display board with frame fixing bolts 3, there is a height difference between each cabinet module. In addition, there is a problem in that a black line or a black stripe pattern is generated due to the step difference in an edge area of an adjacent cabinet where the step difference occurs.

10-2266979

Therefore, the present invention was created to solve the above-mentioned problems, and firstly adjusts through mechanical correction to remove the black line appearing in the edge area of the adjacent cabinet, and the black line continues to An object of the present invention is to provide an invention to remove a black line through secondary brightness control correction when it appears.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the description below.

The object of the present invention described above is to mechanically adjust the height of the cabinet unit to correct the black line appearing in the cabinet edge area, and to adjust the brightness of the edge area of the LED module disposed in the cabinet. It can be achieved by providing an LED display board having a black line correction function, characterized in that it includes a second black line correction unit to correct a black line appearing in the edge area.

In addition, the black line correction of the second black line correction unit corrects the black line by secondarily adjusting the brightness when the black line is not removed even after adjusting the height of the first black line correction unit.

In addition, the first black line correction unit has a double frame structure to independently adjust and correct the horizontal and vertical adjustment of the cabinet and the height of the cabinet.

In addition, the first black line correction unit is elastically fixed to the inside of the horizontal and vertical adjustment frame unit fixed to the wall fixing frame unit and the horizontal and vertical adjustment frame unit to correct the overall horizontal and verticality of the cabinet, so that the height of the cabinet is mechanically lowered. It includes a height-adjusting frame part that adjusts the height of the edge area by adjusting the elasticity to compensate for the black line appearing in the edge area of the cabinet.

In addition, the second black line correction unit manages and operates a video signal source for supplying video signals to the LED display board, and controls the brightness of the LED module in the edge area where the black line appears by registering the edge area in units of cabinets. A video signal source operator that generates and outputs a control signal, receives the video signal source transmitted from the video signal source operator, converts the signal according to the resolution of the LED display board, transmits the converted video signal data, and transfers and outputs the brightness control signal. The sanding module unit receives the video signal transmitted from the sanding module unit, allocates and distributes the video signal to be transmitted to each LED module, and outputs a signal to control the brightness to the LED module of the edge area where the black line appears based on the brightness control signal. It includes a receiving module unit that does.

In addition, the video signal source operation unit, the video signal source supply unit that outputs the video signal source for supplying video signals to the LED display board to the sanding module unit, and the cabinet edge that registers and manages cabinet edge information for the edge area where each cabinet comes into contact with each other. An edge brightness control unit generating a brightness control signal to control the brightness of the LED module in an edge area where a black line appears based on the area registration unit and cabinet edge information and outputting the generated brightness control signal to the sanding module unit.

In addition, the cabinet edge information includes edge area information and LED module information included in the edge area.

In addition, the receiving module unit allocates and distributes the video signal to transmit the video signal input from the video signal input unit and the video signal input unit to each LED module, which receives the video signal from the sanding module unit, and transmits the allocated and distributed video signal to the LEDs. Generates an LED module edge brightness control signal that controls the brightness of the edge area of the LED module included in the cabinet edge area where the black line appears based on the brightness control signal transmitted from the image signal allocation output unit and the sanding module unit output to the module and an LED module edge brightness controller outputting the output to the LED module included in the cabinet edge area where the black line appears.

Further, the LED module included in the edge area of the cabinet where the black line appears is the LED module included in the edge area of the cabinet in contact with each other where the black line appears.

According to the present invention as described above, the black line appearing in the edge area of the adjacent cabinet is firstly adjusted through mechanical correction, and if the black line continues to appear after the first correction, secondarily through tone control correction. Effective in removing black lines.

The following drawings attached to this specification illustrate a preferred embodiment of the present invention, and together with the detailed description of the present invention serve to further understand the technical idea of the present invention, the present invention is limited to those described in the drawings. It should not be construed as limiting.
1 is a view showing an integrated frame in which the height of a conventional LED display board cannot be adjusted,
2 to 4 are views showing a double frame structure capable of height adjustment according to an embodiment of the present invention,
5 is a view showing adjacent cabinet edge regions and black lines appearing due to height steps in the cabinet edge region according to an embodiment of the present invention;
6 is a diagram showing an approximate configuration for supplying and outputting image signals to an LED signboard according to an embodiment of the present invention;
7 to 9 are diagrams schematically illustrating a configuration for removing a black line through brightness correction according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. In addition, the embodiment described below does not unduly limit the contents of the present invention described in the claims, and the entire configuration described in the present embodiment cannot be said to be essential as a solution to the present invention. In addition, descriptions of matters obvious to prior art and those skilled in the art may be omitted, and descriptions of these omitted components (methods) and functions may be sufficiently referred to within the scope not departing from the technical spirit of the present invention.

When manufacturing an LED display board with a black line correction function according to an embodiment of the present invention, when manufacturing an LED display board made up of cabinets, the gap between the LED modules included in the edge area in the edge area where one cabinet and adjacent cabinets come into contact with each other. It is a device for compensating to prevent "black or white" stripes from occurring due to height differences. Hereinafter, an LED display board having a black line correction function according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the first black line correction unit according to an embodiment of the present invention mechanically adjusts the height of the cabinet unit to correct the black line appearing in the edge area of the cabinet. 120,130).

The outer frame unit 130 is configured to correct the horizontal and vertical positions of each cabinet and may be referred to as a horizontal and vertical adjustment frame unit, and the internal frame unit 120 is configured to correct the height of each cabinet and may be referred to as a height adjustment frame unit. there is. Horizontal and vertical correction of the outer frame unit 130 and height adjustment of the inner frame unit 120 are adjusted and corrected independently of each other. Here, the horizontal and vertical correction of the external frame unit 130 means to align the rectangle horizontally and vertically when the overall cross-sectional shape of the cabinet is a rectangle shape as shown in FIG. 5 .

The outer frame unit 130 according to an embodiment of the present invention is coupled and fixed to the wall fixing frame unit 140 made of an aluminum bar as an example. At this time, the wall fixing frame unit 140 is attached and fixed to the wall where the LED display board is installed. As shown in FIG. 2 , the external frame unit 130 is coupled and fixed to the wall fixing frame unit 140 by first and second fixing bolts 132a and 132b after leveling and verticalizing the cabinet. As shown in FIG. 3 , an inner frame part 120 to be described later is inserted into the outer frame part 130 .

The inner frame part 120 according to an embodiment of the present invention is inserted into the outer frame part 130, and the inner frame part 120 is connected to the outer frame by the first and second elastic bolts 122a and 122b. It is elastically coupled and fixed to the unit 130. The height of the frame can be adjusted by adjusting the tension of the first and second elastic bolts 122a and 122b, and the inner frame part 120 is elastically coupled and fixed by the first and second elastic bolts 122a and 122b. The height of the cabinet can be elastically adjusted mechanically, and accordingly, the height difference in the edge area can be reduced by adjusting the height of the cabinets adjacent to each other, thereby correcting the black line. As shown in FIGS. 2 to 4 , two first and second elastic bolts 122a and 122b are disposed vertically on one side of each cabinet to adjust the height of the cabinet. According to the height adjustment of the first and second elastic bolts 122a and 122b, the height of the LED modules belonging to each cabinet is substantially adjusted, so that the LEDs included in the edge area in the edge area where one cabinet and adjacent cabinets come into contact with each other. The level difference between modules can be adjusted to compensate for occurrence of black lines (or black lines).

In the inner frame part 120, an LED module support part 123 supporting each LED module is disposed inside the frame of the inner frame part 120, and each LED module 111, 112, 113 is supported by the LED module support part 123, respectively. . Since the plurality of LED modules 111, 112, and 113 are respectively supported by the LED module support 123, the height of the LED module unit 110 can be elastically adjusted by the first and second elastic bolts 122a and 122b.

Meanwhile, FIG. 4 shows the LED module unit 110, the internal frame unit 120, and the external frame unit 130 included in any one cabinet. After the outer frame part 130 is first coupled and fixed to the wall fixing frame part 140, the inner frame part 120 is elastically coupled and fixed to the outer frame part 130, and the LED module part 110 is It is combined and fixed to the module support part 123 to form one cabinet.

5 is an illustrative example of correcting a black line, a first cabinet edge area 105 where a first cabinet 101 and a second cabinet 102 are adjacent to each other, and a first cabinet 101 and a third cabinet 101 adjacent to each other. A case where a black line occurs due to a height difference between cabinets in the second cabinet edge region 106 adjacent to the cabinet 103 will be described as an example. The black line may appear entirely in the cabinet edge area or may appear partially depending on the level difference in the cabinet edge area.

First, in order to remove the black line formed in the first cabinet edge area 105, the LED modules 101c, 101d, and 101e of the first cabinet in the first cabinet edge area 105 and the LED modules of the second cabinet ( The heights of 102a, 102b, and 102c) are elastically adjusted to each other so that there is no height difference. As an example, the first and second elastic bolts in the vicinity of the third and fifth LED modules 101c and 101e of the first cabinet and the first and second elastic bolts in the vicinity of the first and third LED modules 102a and 102c of the second cabinet ,2 The height of the LED modules can be adjusted by elastically adjusting the elastic bolt.

In addition, in order to remove the black line formed in the second cabinet edge area 106, the LED modules 101a, 101b, and 101c of the first cabinet in the first cabinet edge area 105 and the LED modules of the third cabinet ( The heights of 103a, 103b, and 103c) are elastically adjusted to each other so that there is no height difference. As an example, the first and second elastic bolts in the vicinity of the first and third LED modules 101a and 101c of the first cabinet and the first and second elastic bolts in the vicinity of the first and third LED modules 103a and 103c of the third cabinet ,2 The height of the LED modules can be adjusted by elastically adjusting the elastic bolt.

Meanwhile, even if the first black line compensator mechanically elastically adjusts the level difference generated in the edge area, the black line may not be completely removed. Efforts in the field to mechanically match the level difference can be difficult in many ways. Therefore, in the present invention, if the black line continues to appear even when the level difference is mechanically matched to some extent, the second black line corrector performs a second black line correction. Provides an invention that can allow the line to be corrected.

The second black line correction unit according to an embodiment of the present invention adjusts the brightness (or brightness) of the edge area of the LED module disposed in each cabinet to secondarily correct the black line appearing in the cabinet edge areas 105 and 106. let it do As described above, the black line correction of the second black line corrector is performed by secondarily adjusting the brightness of the edge area of the LED module when the black line is not removed even after adjusting the height of the first black line corrector. It is desirable to correct

First, in order to expose the video signal to the LED display board, as shown in FIG. Roughly includes a main power supply unit 40 and a power distribution unit 50 to supply power to each controller. As shown in FIG. 9, the power distributed from the power distribution unit 50 is supplied to each of the LED modules 81, 82, and 83 provided in the LED module unit 80, and the power supply module unit 300 As an example, as an SMPS, power is finally supplied to each LED module. The first cabinet module unit 31 receives an image signal to be displayed on the LED module mounted in the first cabinet from the sanding module unit 20, and the second cabinet module unit 32 receives a video signal to be displayed on the LED module mounted in the first cabinet. The image signal to be displayed on the LED module is supplied from the sanding module unit 20, and the third cabinet module unit 33 supplies the image signal to be displayed on the LED module mounted in the third cabinet from the sanding module unit 20. receive Meanwhile, taking the first cabinet module unit 31 as an example, the first cabinet module unit 31 transmits the video signal transmitted from the sanding module unit 20 and the power signal supplied from the power distribution unit 50. Receives and distributes and outputs video signals and power signals to each LED module.

As shown in FIG. 6, the video signal source management unit 10 according to an embodiment of the present invention stores and manages video signal sources to be displayed in the LED module. Accordingly, the video signal source management unit 10 may be embodied as a computer and a monitor as an example. The video signal source management unit 10 transmits the video signal source to be displayed on the LED module to the sanding module unit 20 to be described later. In addition, the video signal source operation unit 10 manages and operates the video signal source for supplying video signals to the LED display board, registers the edge areas of cabinets adjacent to each other on a cabinet basis, and thus the edges of cabinets adjacent to each other where black lines appear. A brightness control signal for controlling the brightness of the LED module in the region is generated and output to the sanding module unit 20 . That is, in the present invention, when the black line continues to appear even by the elasticity adjustment of the first black line correction unit, the black line is adjusted to 2 by adjusting the brightness of the LED module in the edge area where the black line appears by the second black line correction unit. can be gradually removed.

Referring to FIGS. 7 and 8 , the video signal source operating unit 10 according to an embodiment of the present invention includes a video signal source providing unit 11, a cabinet edge area registration unit 12, and an edge brightness control unit 13. to include

The video signal source providing unit 11 according to an embodiment of the present invention outputs a video signal source for supplying video signals to the LED display board to the sanding module unit 20 .

The cabinet edge region registration unit 12 according to an embodiment of the present invention registers and manages cabinet edge information about edge regions of cabinets where each cabinet comes in contact with each other. The cabinet edge information includes cabinet edge area information and LED module information included in the cabinet edge area. As an example, referring to FIG. 5 , cabinet edge area information may be information on first and second cabinet edge areas 105 and 106 . If the operator determines that the black line correction for the first cabinet edge area 105 is necessary, the sanding module unit 20 transmits information on the first cabinet edge area 105 through the edge brightness control unit 13. to be sent to Information on the first cabinet edge area 105 is information on an edge area where the first cabinet 101 and the second cabinet 102 are adjacent. In addition, the LED module information included in the cabinet edge area includes the LED modules 101c, 101d, and 101e of the first cabinet 101 included in the first cabinet edge area 105 and the LED modules of the second cabinet 102 ( 102a, 102b, 102c) information.

The edge brightness control unit 13 according to an embodiment of the present invention generates a brightness control signal to control the brightness of the LED modules in the cabinet edge areas 105 and 106 where the black line appears based on the cabinet edge information, and the sanding module unit ( 20) as output. The output brightness control signal includes information on a cabinet edge area requiring black line correction and information on an LED module included in the cabinet edge area. The edge brightness control unit 13 corrects the black line according to input information input by the operator through the input device 60 . That is, when the operator inputs a black line correction signal indicating that black line correction of the first cabinet edge area 105 is required to the edge brightness control unit 13 through the input device 60, the edge brightness control unit 13 outputs the black line correction. Information on the cabinet edge area corresponding to the line correction signal and information on the LED module included in the cabinet edge area are obtained from the cabinet edge area registration unit 12, and a brightness control signal is output to the sanding module unit 20.

The sanding module unit 20 according to an embodiment of the present invention receives the video signal source transmitted from the video signal source providing unit 11, converts the signal according to the resolution of the LED display board, and converts the converted video signal data into a receiving module. unit 70, receives the brightness control signal from the edge brightness control unit 13, and relays and outputs the brightness control signal to the receiving module unit 70. The sanding module unit 20 may perform data buffering and scaling of a video signal source by an embedded video processor. The sanding module unit 20 may be called a so-called main controller unit and may include a sanding card and a function card. However, the description of the specific function of the sanding module unit 20 described in the present invention may be referenced within the scope that does not deviate from the technical spirit of the present invention.

Referring to FIGS. 8 and 9 , the receiving module unit 70 according to an embodiment of the present invention receives the image signal transmitted from the sanding module unit 20 and transmits it to each LED module 81 , 82 , and 83 . Video signals to be transmitted are allocated and distributed, and based on the brightness control signal relayed and output from the sanding module unit 20, a signal for controlling brightness is output to the LED module in the edge area of the cabinet where the black line appears. To this end, the receiving module unit 70 roughly includes a video signal input unit 71, a video signal allocation output unit 72, a receiving signal control unit 73, and an LED module edge brightness control unit 74.

The video signal input unit 71 according to an embodiment of the present invention receives a video signal to be transmitted from the sanding module unit 20 to each LED module unit 80 .

The video signal allocation output unit 72 according to an embodiment of the present invention allocates and distributes the video signal to transmit the video signal input from the video signal input unit 71 to each LED module 81, 82, 83, The allocated and distributed video signal is output to each LED module (81, 82, 83).

The receiving signal controller 783 according to an embodiment of the present invention resizes the size of the video signal received from the sanding module unit 20 and generates an RGB signal, a clock signal, and a control signal for the size of the signal. print out Also, overall control of the receiving module unit 70 is performed. Meanwhile, the receiving module unit 70 may be embodied as a receiving card, and a functional description of a receiving card not described in the present invention may be referred to within the creative scope of the technical concept of the present invention. The above-described video signal allocation output unit 72 and receiving signal control unit 73 are separated for convenience of explanation, but their functions may be integrated as needed.

The LED module edge brightness control unit 74 according to an embodiment of the present invention determines the brightness of the edge area of the LED module included in the cabinet edge area where the black line appears based on the brightness control signal transmitted from the sanding module unit 20. The controlling LED module edge brightness control signal is generated, and the LED module edge brightness control signal is output to the LED module included in the cabinet edge area where the black line appears.

As in the above example, if black line correction is required for the edge area 105 of the first cabinet, the LED module edge brightness control signal is transmitted to the LED modules 101c, 101d, and 101e of the first cabinet 101 and the second cabinet. It is output to the LED modules 102a, 102b, and 102c of (102), respectively. When the LED modules 101c, 101d, and 101e of the first cabinet 101 and the LED modules 102a, 102b, and 102c of the second cabinet 102 receive an LED module edge brightness control signal, respectively, the edges of their own LED modules Controls the brightness of an area. That is, the LED module in the edge area of the cabinet receiving the LED module edge brightness control signal does not adjust the brightness of the entire LED module, but adjusts the brightness of a portion adjacent to the edge area of the cabinet. Therefore, the brightness of any one LED module receiving the LED module edge brightness control signal may be different depending on the area of the LED module. That is, the first brightness for the first area and the second brightness for the second area of the LED module may be different from each other. The first area may be an area not adjacent to the cabinet edge area, and the second area may be an area adjacent to the cabinet edge area. The black line may be removed by adjusting the brightness of the second region.

In describing the present invention, descriptions of matters obvious to those skilled in the art and those skilled in the art may be omitted, and descriptions of these omitted components (methods) and functions will be sufficiently referred to within the scope that does not depart from the technical spirit of the present invention. You will be able to. In addition, the above-described components of the present invention have been described for convenience of description of the present invention, but components not described herein may be added within a range that does not deviate from the technical spirit of the present invention.

The description of the configuration and function of each part described above has been separately described for convenience of explanation, but any one configuration and function may be implemented by integrating into other components or implemented in more subdivided form, if necessary.

Although the above has been described with reference to one embodiment of the present invention, the present invention is not limited thereto, and various modifications and applications are possible. That is, those skilled in the art will easily understand that many modifications are possible without departing from the gist of the present invention. In addition, when it is determined that the detailed description of known functions and their configurations related to the present invention or the coupling relationship of each component of the present invention may unnecessarily obscure the gist of the present invention, it should be noted that the detailed description is omitted. something to do.

1: LED module part
2 : Integral frame
3 : Frame fixing bolt
4: wall fixing frame
10: video signal source operation unit
11: video signal source providing unit
12: cabinet edge area register
13: Edge Brightness Control
20: sanding module part
31,... .,33: first,... .,n cabinet module part
40: main power supply
50: power distribution unit
60: input unit
70: receiving module unit
71: video signal input unit
72: video signal allocation output unit
73: receiving signal control unit
74: LED module edge brightness control unit
80: LED module part
81,... .,83: first,... .,n LED module
100: LED display board
101,... ., 103: first, ... .,3 cabinet
101a, 101b, 101c, 101d, 101e: 1st, 2nd, 3rd, 4th, 5th LED modules of the first cabinet
102a, 102b, 102c: first, second and third LED modules of the first cabinet
103a, 103b, 103c: first, second and third LED modules of the third cabinet
105, 106: first and second cabinet edge areas
110: LED module part
111,... ., 113: first, ... .,n LED module
120: Height adjustable frame (or inner frame)
121: inner frame
122a: first elastic bolt
122b: second elastic bolt
123: LED module support
130: horizontal and vertical adjustment frame unit (or external frame unit)
131: external frame
132a: first fixing bolt
132b: second fixing bolt
140: wall fixing frame

Claims (9)

A first black line correction unit that mechanically adjusts the height of each cabinet to correct a black line appearing in the edge area of the cabinet;
A second black line correction unit configured to correct a black line appearing in an edge area of the cabinet by adjusting the brightness of an edge area of the LED module disposed in the cabinet;
The second black line correction unit,
It manages and operates the video signal source for supplying video signals to the LED display board, and generates and outputs a brightness control signal to control the brightness of the LED module in the edge area where the black line appears by registering the edge area in units of cabinets. video signal source operation department,
A sanding module unit that receives the video signal source transmitted from the video signal source operator, converts the signal according to the resolution of the LED display board, transmits the converted video signal data, and transmits and outputs the brightness control signal;
Receives the video signal transmitted from the sanding module unit, allocates and distributes the video signal to be transmitted to each LED module, and outputs a signal for controlling the brightness to the LED module of the edge area where the black line appears based on the brightness control signal. An LED signboard with a black line correction function, characterized in that it comprises a receiving module unit to do.
According to claim 1,
Black line correction of the second black line correction unit,
When the black line is not removed even after the height adjustment of the first black line correction unit, the black line is corrected by secondarily adjusting the brightness.
According to claim 1,
The first black line correction unit,
An LED signboard with a black line correction function, characterized in that it has a double frame structure to independently adjust and correct the horizontal and vertical adjustment of the cabinet and the height of the cabinet.
According to claim 1,
The first black line correction unit,
Horizontal and vertical adjustment frame parts fixed to the wall fixing frame part to correct the overall horizontal and verticality of the cabinet;
and a height adjusting frame portion elastically fixed to the inside of the horizontal and vertical adjusting frame portion to mechanically elastically adjust the height of the cabinet so that a step difference in the edge area is reduced to correct a black line appearing in the cabinet edge area. An LED display board equipped with a black line correction function.
delete According to claim 1,
The video signal source operating unit,
A video signal source providing unit for outputting a video signal source for supplying video signals to the LED display board to the sanding module unit;
A cabinet edge area register that registers and manages cabinet edge information for the edge area where each cabinet comes in contact with each other;
and an edge brightness control unit generating a brightness control signal to control the brightness of the LED module of the edge area where the black line appears based on the cabinet edge information and outputting the generated brightness control signal to the sanding module unit. An LED display board having a.
According to claim 6,
In the cabinet edge information,
An LED display board with a black line correction function, characterized in that the edge area information and the LED module information included in the edge area are included.
According to claim 1,
The receiving module unit,
A video signal input unit for receiving a video signal from the sanding module unit;
A video signal allocation output unit for allocating and distributing the video signals received from the video signal input unit to transmit the video signals to each LED module and outputting the allocated and distributed video signals to the LED modules;
Based on the brightness control signal transmitted from the sanding module unit, an LED module edge brightness control signal is generated to control the brightness of the edge area of the LED module included in the cabinet edge area where the black line appears, and the cabinet where the black line appears. An LED display board with a black line correction function, characterized in that it includes an LED module edge brightness control unit outputting to the LED module included in the edge area.
According to claim 8,
The LED module included in the cabinet edge area where the black line appears,
An LED display board with a black line correction function, characterized in that the LED module included in the edge area of the cabinet in contact with each other where the black line appears.