TWI848466B - Large screen inspection method and large screen - Google Patents

Abstract

A method for inspecting a large screen includes a plurality of display units arranged in an array, wherein the array is composed of a plurality of vertical rows and a plurality of horizontal rows. The method for inspecting a large screen includes the following steps: inspecting the display units; determining whether the display units are faulty; and replacing the positions of the faulty display units among the display units that are determined to be faulty with the normal display units that are located closest to the periphery of the array and are determined to be normal.

Description

Large screen inspection method and large screen

The present invention relates to a method for inspecting and repairing a screen, and in particular to a method for inspecting and repairing a large screen.

The development of known displays is becoming more and more mature, and has been widely used in large display screens. For example, a general large screen (such as a dome screen) is composed of a large number of LED displays installed on a bracket to provide viewers with a wide viewing angle and an immersive viewing experience.

During use, it is inevitable that some LED displays will malfunction. When some LED displays in a large screen malfunction, the image displayed on the large screen will have defects such as regional image flickering or too dark brightness, thereby affecting the presentation effect and the viewing experience of the audience.

When maintenance personnel remove the bracket of the faulty LED display for subsequent maintenance, the image on the large screen will be incomplete, and the display will not be able to be displayed or the display quality will be poor. Therefore, the maintenance unit will need to stock up on multiple sets of maintenance spare parts to replace the faulty LED display immediately to avoid the above situation. However, for large screens with special structures such as domes, the shapes of each row of LED displays are different. If too many spare parts are stocked, it will affect the storage space. Due to the high maintenance cost, general maintenance units will only set up 1 to 2 sets of spare parts for each shape. In this way, when too many LED displays on the dome fail at the same time, there will be insufficient spare parts to replace all the failed LED displays. In addition to being unable to replace and repair them immediately to provide high-quality display images, the ordering and transportation of spare parts will also cause the maintenance schedule to be longer. This will inevitably affect the image quality presented by the large screen and the viewing experience of the audience for a long time. Therefore, how to provide a large screen inspection method so that the maintenance unit does not need to stockpile too many spare parts and can still provide high-quality display images in a short time when the LED display fails is an urgent problem to be solved.

In view of this, the purpose of the present invention is to provide a large-screen inspection method, when the display unit in the large-screen fails, it can still provide a high-quality display image in a short time.

In order to achieve the above-mentioned purpose, the present invention provides a method for repairing a large screen, wherein the large screen comprises a plurality of display units, wherein the display units are arranged in an array, wherein the array is composed of a plurality of vertical rows and a plurality of horizontal rows, and wherein the method for repairing the large screen comprises the following steps: detecting the display units; determining whether the display units are faulty; and replacing the positions of the faulty display units among the display units that are determined to be faulty with the normal display units that are arranged at the periphery of the array and are determined to be normal.

The present invention further provides a large screen using the above-mentioned inspection method, defining a range, which is a range extending inward from the outer periphery of the array, and all faulty display units located near the outer periphery of the array are located in the range. When the large screen plays images, all display units in the range do not display, display black or are blocked.

The effect of the present invention is that, by replacing the positions of the faulty display unit with the normal display unit located closest to the periphery of the array, the faulty display unit can be first moved to the outer edge of the large screen, thereby greatly reducing the damage of the faulty display unit to the overall image presentation, maximizing the integrity of the image presented by the large screen, and providing a high-quality display image when the faulty display unit is not yet repaired, so as to improve the problem that when there are too many faulty display units in the array, the spare parts are not enough to replace all the faulty display units, and the user does not need to stockpile too many spare parts in the warehouse. The large screen can be equipped with replacement parts for replacement, thereby achieving the purpose of reducing maintenance costs, and maintenance personnel can repair faulty display units in ample time, thereby achieving the effect of reducing the number of maintenance personnel and reducing the workload of maintenance personnel; and when the large screen plays images, through the technical means that all display units in the range are not displayed, displayed in black or are shielded, the outer edge of the large screen display screen can be presented in a smooth state, and will not be affected by the faulty display unit and appear jagged, thereby providing a high-quality display screen and enhancing the audience's viewing experience.

In order to explain the present invention more clearly, a preferred embodiment is given and described in detail with reference to the drawings. Please refer to FIG1 , which is a flow chart of a method for repairing a large screen 1 according to a preferred embodiment of the present invention.

As shown in FIG. 2 , the large screen 1 includes a plurality of display units 10. In the present embodiment, each of the display units 10 is illustrated as an example of an LED display. In other embodiments, it is not excluded that the display unit 10 is other types of displays. In addition, in the present embodiment, the large screen 1 is illustrated as an example of a spherical screen formed by splicing a plurality of LED displays on a bracket 2. In practice, the large screen 1 may also be a screen of other shapes such as a plane.

The display units 10 are arranged in an array, and the array is composed of a plurality of vertical rows and a plurality of horizontal rows. To further explain, in this embodiment, as shown in FIG. 3 , the array includes a first portion P1, a second portion P2, a third portion P3, a fourth portion P4, and a fifth portion P5. Each portion may be composed of a different number of vertical rows or a different number of horizontal rows. For example, the first portion is composed of 64 The first part is composed of 32 columns (X’1, X’2, X’3…X’32) and 11 rows (Y’1, Y’2, Y’3…Y’11). In other embodiments, the array may be composed of multiple parts or only one part.

The maintenance method of the large screen 1 comprises the following steps:

Step S02, detect the display units 10; please refer to Figure 2. In this embodiment, a camera device 3 is set in front of the large screen 1, and after all the display units on the large screen 1 are all lit up, the camera device 3 is used to photograph all the display units on the large screen 1, and the photographed image is transmitted to a computing host 4 and analyzed using image recognition. Of course, in addition to lighting up all display units at the same time, in order to achieve a more accurate inspection, each row can be photographed by lighting up each row one by one until all display units in each row of the large screen 1 are inspected; in practice, it is not excluded to light up each row one by one until all display units in each row of the large screen 1 are inspected; in addition, it is not excluded to inspect these display units by other methods such as block lighting. It must be explained that in addition to using photography combined with image recognition, the same purpose can also be achieved by direct human visual judgment.

Step S04, determining whether the display units 10 are faulty; in the present embodiment, after receiving the image from the photographic device 3, the computing host 4 analyzes whether there are display units in the image that meet the definition of fault, and then further records the positions of the display units determined to be faulty, and forms a record data output (with FIG. 3); wherein, the criterion for determining a fault can be defined by the user, for example, when each of the display units 10 contains more than three damaged pixels, the display unit is determined to be a faulty display unit.

In this embodiment, it is explained by taking the case where each display unit 10 contains more than one but less than or equal to 3 damaged pixels as a first level fault, and each display unit 10 contains more than 3 damaged pixels as a second level fault. In addition, the position marking form of the display unit judged as a first level fault and the position marking form of the display unit judged as a second level fault in the recorded data are different. As shown in FIG. 3, the position of the display unit judged as normal is indicated in white, the position of the display unit judged as a first level fault is marked in the form of a black square, and the position of the display unit judged as a second level fault is marked in the form of a gray square. In this way, maintenance personnel can clearly know the positions of all faulty display units and the degree of damage of these faulty display units based on the recorded data.

Step S06, swap the positions of the faulty display units 10 that are judged to be faulty with the normal display units that are located closest to the periphery of the array and judged to be normal; for example, based on the record of the record data, the maintenance personnel can remove a faulty display unit and a normal display unit located closest to the periphery of the array from the bracket, swap the installation positions of the two on the bracket 2, and repeat the above-mentioned actions until all the faulty display units are moved to the nearest periphery of the array. The outer edge of the large screen 1, thereby, as shown in FIG. 4, the faulty display unit can be moved to the outer edge of the large screen 1 to maximize the integrity of the large screen image presentation, thereby providing a high-quality display image when the faulty display unit is not yet repaired, and improving the problem that when there are too many faulty display units in the array, the spare parts are not enough to replace all the faulty display units, and the user does not need to store too many spare parts in the warehouse for replacement, thereby achieving the purpose of reducing maintenance costs. It is further explained that if the faulty display unit among the display units is located at the outermost periphery of the array, the display units located at the outermost periphery of the array can remain unchanged.

In this embodiment, step S06 further includes exchanging the positions of the faulty display units in each row with the normal display units that are located in the same row and closest to the periphery and are judged to be normal. That is, the maintenance personnel can remove a faulty display unit in the same row and a normal display unit located in the same row and closest to the periphery from the bracket 2, and then exchange the installation positions of the two on the bracket 2, and repeat the above actions until all the faulty display units in the same row are moved closest to the outer edge of the large screen 1, and perform the above actions in all rows containing faulty display units until all the faulty display units in the array are moved closest to the outer edge of the large screen.

In other embodiments, if the large screen is composed of display units of the same shape, it is not limited to interchange the setting positions of the faulty display units and the normal display units in the same horizontal row; for example, it is also possible to interchange the setting positions of the faulty display units and the normal display units in the same vertical row, or interchange the setting positions of the faulty display units and the normal display units across rows and columns, which can also achieve the purpose of moving the faulty display units to the outer edge of the large screen to maximize the integrity of the large screen image presentation.

It is to be noted that in this embodiment, step S06 further includes that when the number of fault display units in the same row is an even number, the number of fault display units is evenly distributed and moved to two opposite sides of the same row, and when the number of fault display units in the same row is an odd number, the number of fault display units is distributed into N and N+1 and moved to two opposite sides of the same row, respectively. Preferably, when the number of faulty display units in the same row is an odd number, N display units are moved to a first side 1b, one of the two opposite sides of the same row, and N+1 display units are moved to a second side 1a, one of the two opposite sides of the same row, and are replaced with the normal display units judged to be normal.

For example, as shown in FIG3 , in row Y5, the number of fault display units is 8, which is an even number. Therefore, 4 fault display units are moved to the outermost edge of the first side 1b of row Y5, and 4 fault display units are moved to the outermost edge of the second side 1a of row Y5 (in conjunction with FIG4 ); and in row Y11, as shown in FIG3 , the number of fault display units is 3 That is, an odd number, therefore, one fault display unit in row Y11 is moved to the outermost edge of the first side 1b of row Y11, and two fault display units in row Y11 are moved to the outermost edge of the second side 1a of row Y11 (in conjunction with FIG. 4 ); thereby, the setting positions of the fault display units are roughly evenly distributed, so that the large-screen image can be presented in the maximum completeness.

In this embodiment, the step S06 further includes placing the display units of the faults in the same row and on the same side judged as the second level faults closer to the periphery of the array than the display units judged as the first level faults; as shown in FIG4 , row Y11 has three fault display units A1, A2, and A3, wherein display unit A1 is judged as the second level fault and the display unit A2 is judged as the first level fault. The display unit A2 is judged as a first-level fault, and the display unit A1 judged as a second-level fault is set closer to the outermost edge of the second side 1a than the display unit A2 judged as a first-level fault; thereby, the faulty display unit with a more serious fault can be moved to a position closest to the outer edge of the large screen 1 to reduce the impact of the faulty display unit on the overall display screen of the large screen 1. Of course, in addition to the above-mentioned manual replacement of the display unit by maintenance personnel, in some occasions, if it is inconvenient for maintenance personnel to go to the relevant setting position, the same purpose can be achieved by controlling the robot arm. In addition, the aforementioned robot arm can also be connected to the computing host 4 via signals. After the computing host 4 analyzes and records the position of the display unit that is judged to be faulty, it can further calculate which non-faulty display units should be replaced with the faulty display unit according to the above method, and control the robot arm to complete the aforementioned replacement operation.

In this embodiment, the maintenance method of the large screen includes executing a step S08 after the step S06 to turn off the fault display unit that is judged to be faulty; thereby, when the large screen 1 is turned on to make it work, the fault display unit that is judged to be faulty will not be displayed. Preferably, at least one side of the plurality of rows has a fault display unit located farthest from the outer edge of the row, and the fault display unit farthest from the outer edge of the row has a maximum distance from the outer edge of the row. A range is defined based on the maximum distance, and the range is a range extending inward from the outer edge of the array and is greater than or equal to the maximum distance. The step S08 includes: All display units covered within the range are turned off, so that when the large screen is turned on to display images, all display units within the range will not be turned on. In this way, the outer edge of the display screen of the large screen 1 can be presented in a smooth state, and will not appear jagged due to the influence of the faulty display unit, thereby providing a high-quality display screen and enhancing the viewer's viewing experience.

In another embodiment, the step S08 may also be to control the faulty display unit to display black, whereby when the large screen is turned on to work, the faulty display unit judged to be faulty will display black. Preferably, based on the above, the step S08 includes controlling all display units in the range to display black, whereby when the large screen 1 is turned on to work to display images, all display units in the range display black, so that the outer edge of the display screen of the large screen 1 can be presented in a smooth state, and will not be jagged due to the influence of the faulty display unit, thereby providing a high-quality display screen and enhancing the viewing experience of the audience.

In another embodiment, the step S08 may also be, based on the maximum distance, providing a mask 20 to cover the outer periphery of the large screen to cover all fault display units, wherein the width D of the mask is greater than or equal to the maximum distance; for example, as shown in FIG. 4 , among all the rows, row Y51 has a fault display unit A4 located at the outer edge of the second side 1a farthest from row Y51, and the right side of the fault display unit A4 is aligned with the second side 1a of row Y51. There is a maximum distance between the outer edges. Based on the maximum distance, a mask 20 is provided to cover the outer periphery of the large screen 1 to cover all faulty display units. In this way, as shown in FIG. 5 , when the large screen 1 is turned on to display images, the outer periphery of the large screen 1 will be shielded by the mask 20 and can be presented in a smooth state, and will not appear jagged due to the influence of the faulty display units, thereby providing a high-quality display image and enhancing the viewing experience of the audience.

In another embodiment, the step S08 may also be that one side of at least one of the rows has a faulty display unit located farthest from the outer edge of the side of the row, including at least one faulty pixel, and there is a maximum distance between the pixel and the outer edge of the side of the row. A range is defined based on the maximum distance, and the range is a range extending inward from the outer edge of the array to a range greater than or equal to the maximum distance, and the pixels in all display units covered within the range are controlled not to display, to display black, or to be blocked.

In this way, all faulty pixels in the faulty display units located near the periphery of the array are located within the range. When the large screen 1 is turned on to display images, all pixels in the range will be displayed in a manner of not displaying, displaying black, or being shielded by the mask 20, and some normal pixels in the faulty units farthest from the outer edge of the large screen 1 can be displayed normally, thereby achieving the purpose of maximizing the integrity of the picture presented by the large screen 1, and it will not appear jagged due to the influence of the faulty display units, thereby providing a high-quality display picture and enhancing the audience's viewing experience.

In summary, the present invention can move the faulty display unit to the outer edge of the large screen by replacing the faulty display unit with the normal display unit located closest to the periphery of the array. In this way, the damage caused by the faulty display unit to the overall image presentation can be greatly reduced to maximize the integrity of the image presented by the large screen 1, thereby providing a high-quality display image. In addition, compared with the conventional inspection method, in order to present the integrity of the image, the faulty display unit must be quickly inspected and replaced. The present invention can improve the problem of insufficient spare parts to replace all faulty display units when there are too many faulty display units in the array by first moving the faulty display units to the outer edge of the large screen. Users do not need to store too many spare parts in the warehouse for replacement, thereby achieving the purpose of reducing maintenance costs. Maintenance personnel can also inspect and repair the faulty display units in ample time, thereby achieving the effect of reducing the number of maintenance personnel and reducing the workload of maintenance personnel.

In addition, when the large screen repaired by the inspection method plays images, all display units or all pixels in the range are displayed in a non-display, black or masked manner, so that the outer edge of the large screen display screen can be presented in a smooth state without being affected by the faulty display unit and appearing jagged, thereby providing a high-quality display screen and enhancing the viewer's viewing experience.

The above description is only the preferred embodiment of the present invention. Any equivalent changes made by applying the present invention specification and the scope of patent application should be included in the patent scope of the present invention.

[The present invention] S02, S04, S06, S08: Steps 1: Large screen 10, A1, A2, A3, A4: Display unit 1a: Second side 1b: First side 2: Bracket 20: Mask 3: Photographic device 4: Computing host D: Width P1, P2, P3, P4, P5: Part Y, Y’: Horizontal X, X’: Vertical

FIG1 is a flow chart of a method for repairing a large screen in a preferred embodiment of the present invention. FIG2 is a three-dimensional diagram of the large screen in the preferred embodiment installed on a bracket FIG3 is a schematic diagram of the recorded data in the preferred embodiment. FIG4 is a schematic diagram of the position of the fault display unit and the normal display unit in the preferred embodiment after being replaced with each other. FIG5 is a schematic diagram of a mask covering the outer periphery of a large screen in a preferred embodiment.

S02, S04, S06, S08: Steps

Claims (8)

A large screen inspection method includes a plurality of display units arranged in an array, the array consisting of a plurality of vertical rows and a plurality of horizontal rows. The large screen inspection method includes the following steps: detecting the display units; determining whether the display units are faulty; and exchanging the positions of the faulty display units judged to be faulty with the normal display units that are located closest to the periphery of the array and determined to be normal; exchanging the positions of the faulty display units in each horizontal row with the normal display units that are located closest to the periphery in the same horizontal row and determined to be normal; wherein when the number of faulty display units in the same horizontal row is an even number, the number of faulty display units is evenly distributed and moved to opposite sides of the same horizontal row. A large screen inspection method is provided, wherein the large screen comprises a plurality of display units arranged in an array, wherein the array is composed of a plurality of vertical rows and a plurality of horizontal rows, and the large screen inspection method comprises the following steps: inspecting the display units; determining whether the display units are faulty; and replacing the positions of the faulty display units judged to be faulty with the normal display units which are arranged at the outermost periphery of the array and are judged to be normal; and replacing the positions of the display units in each horizontal row with the faulty display units which are judged to be faulty. The fault display unit is replaced with the normal display unit that is closest to the periphery and judged to be normal in the same row; when the number of fault display units in the same row is an odd number, the number of fault display units is divided into N and N+1, and the N display units are moved to one of the two opposite sides of the same row, and the N+1 display units are moved to one of the two opposite sides of the same row, and the second side is replaced with the normal display unit that is judged to be normal. A large screen inspection method includes a plurality of display units arranged in an array, the array consisting of a plurality of vertical rows and a plurality of horizontal rows. The large screen inspection method includes the following steps: detecting the display units; determining whether the display units are faulty; and replacing the positions of the faulty display units judged to be faulty with the normal display units that are located closest to the periphery of the array and are determined to be normal; replacing the positions of the faulty display units in each horizontal row with the normal display units that are located closest to the periphery in the same horizontal row and are determined to be normal; replacing the positions of the faulty display units in the display units judged to be faulty with the normal display units that are located closest to the periphery in the same horizontal row and are determined to be normal. After the step of mutually exchanging the positions of the display unit and the normal display unit which is arranged closest to the periphery of the array and judged to be normal, the step of closing the faulty display unit which is judged to be faulty is performed; wherein the step of closing the faulty display unit which is judged to be faulty includes that one side of at least one of the rows has a position which is farthest from the row. The fault display unit on the outer edge of the row, the fault display unit farthest from the outer edge of the row has a maximum distance from the outer edge of the row, a range is defined based on the maximum distance, the range is a range extending from the outer edge of the array inwards greater than or equal to the maximum distance, and all display units covered in the range are closed. A large screen inspection method includes a plurality of display units arranged in an array, the array consisting of a plurality of vertical rows and a plurality of horizontal rows. The large screen inspection method includes the following steps: detecting the display units; determining whether the display units are faulty; and replacing the faulty display units judged to be faulty with the normal display units that are located closest to the periphery of the array and are determined to be normal; replacing the faulty display units in each horizontal row with the normal display units that are located closest to the periphery in the same horizontal row and are determined to be normal; replacing the faulty display units in the display units judged to be faulty with the normal display units that are located closest to the periphery in the same horizontal row and are determined to be normal. After the step of exchanging the position of the fault display unit with the normal display unit which is located closest to the periphery of the array and is judged to be normal, the step of controlling the fault display unit to display black is performed; wherein the step of controlling the fault display unit to display black includes that at least one side of the rows has a side which is farthest from the row. The faulty display unit on the outer edge, the faulty display unit farthest from the outer edge of the horizontal row has a maximum distance from the outer edge of the horizontal row, and a range is defined based on the maximum distance, which is a range extending from the outer edge of the array inwards and is greater than or equal to the maximum distance, and all display units covered within the range are controlled to display black. A large screen inspection method is provided, wherein the large screen comprises a plurality of display units, wherein the display units are arranged in an array, wherein the array is composed of a plurality of vertical rows and a plurality of horizontal rows, and wherein the large screen inspection method comprises the following steps: inspecting the display units; determining whether the display units are faulty; and replacing the positions of the faulty display units judged to be faulty with the normal display units which are arranged closest to the periphery of the array and are judged to be normal; and replacing the positions of the faulty display units in each horizontal row with the normal display units which are arranged closest to the periphery in the same horizontal row and are judged to be normal. Position; After the step of exchanging the positions of the faulty display units judged as faulty among the display units with the normal display units arranged at the closest periphery of the array and judged as normal, the following steps are performed, wherein one side of at least one of the horizontal rows has a faulty display unit located at the outer edge of the side farthest from the horizontal row, and there is a maximum distance between the faulty display unit farthest from the outer edge of the horizontal row and the outer edge of the side of the horizontal row, and based on the maximum distance, a mask is provided to cover the outer periphery of the large screen to cover all the faulty display units, wherein the width of the mask is greater than or equal to the maximum distance. A large screen inspection method includes a plurality of display units arranged in an array, the array consisting of a plurality of vertical rows and a plurality of horizontal rows. The large screen inspection method includes the following steps: detecting the display units; determining whether the display units are faulty; and replacing the positions of the faulty display units judged to be faulty with the normal display units that are located closest to the periphery of the array and are determined to be normal; replacing the positions of the faulty display units in each horizontal row with the normal display units that are located closest to the periphery in the same horizontal row and are determined to be normal; and replacing the positions of the faulty display units in each horizontal row with the normal display units that are located closest to the periphery in the same horizontal row and are determined to be normal. After the step of exchanging the positions of the faulty display unit in the unit and the normal display unit located closest to the periphery of the array and judged to be normal, the following steps are performed, wherein one side of at least one of the rows has a faulty display unit located farthest from the outer edge of the row and includes at least one faulty pixel, and there is a maximum distance between the pixel and the outer edge of the row. A range is defined based on the maximum distance, and the range is a range extending from the outer edge of the array to the inside and is greater than or equal to the maximum distance, and the pixels in all display units covered within the range are controlled not to display, to display black, or to be blocked. A large screen inspection method as described in any one of claims 1 to 6, wherein the step of determining whether the display units are faulty includes recording the location of the display units determined to be faulty and forming a record. A large screen using a maintenance method as in any one of claims 1 to 6, wherein a range is defined, the range is a range extending inward from the outer periphery of the array, all faulty display units located near the outer periphery of the array are located in the range, and when the large screen plays images, all display units in the range do not display, display black, or are blocked; wherein all faulty pixels in the faulty display units located near the outer periphery of the array are located in the range, and when the large screen plays images, all pixels of the display units in the range do not display, display black, or are blocked.