KR20100095792A - Operating system and method for electric sign board - Google Patents

Abstract

PURPOSE: An electric sign board driving system and a method thereof are provided to improve the reliability of a product and to reduce errors regarding the operation time of an electric sign board. CONSTITUTION: An image processor(1) selectively receives image information from at least two display systems(3,4). The image processor compares the frame data which is included in the image information according to a time difference. The image processor determines whether the display system, which provides present image information, is normally operated. When the present display system is in an abnormal state, the image processor receives the image information from a different display system. An electric sign board(5) outputs the image information of the image processor.

Description

Electric drive board and driving method {Operating system and method for electric sign board}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a signboard, and a signboard drive system and a signboard driving method.

The electronic signboard is a device for implementing a relatively large image, and is an apparatus for forming an image by integrating a plurality of light emitting devices, which are illustrated as light emitting diodes.

Since these devices are used outdoors in many cases, they are influenced by the harsh outdoor temperature / humidity environment and high current flows as a large display system. There are many problems that arise. In addition, the display board is generally output for a relatively long time compared to a general display device (TV, etc.) and rarely occurs when the power is turned off.When the input power of the entire display system is turned off and then turned on again due to the failure of the display system. , Short circuit occurs in the circuit due to the input of the transient current, or the like, and operation reliability decreases due to an unexpected problem.

In order to cope with such unexpected failures, a system for providing an image may be provided in duplicate. By using this redundant system, if a problem occurs in the main system that is normally used, an operator is dispatched to operate the backup system so that there is no problem in the output of the image through the display board. However, whether or not there is a problem with the output image of the electronic display board is a situation that must be relied on by a worker or a citizen. This problem eventually causes the wrong image to be output for a long time, thereby degrading the reliability of the electronic sign.

The present invention proposes an electric sign board driving system and a method for stably outputting an image through a sign board, reducing malfunction time of the sign board, and improving product reliability.

Display board driving system according to the present invention, at least two display systems; Selectively receive and process image information output from the at least two display systems, and compare frame data included in the image information with a time difference, and determine whether the current display system that provides the current image information is normally operated. If it is determined that it is not normal, different from the current display system, the image processing unit for receiving image information from another display system of the at least two or more display systems; And an electronic board for outputting image information output from the image processor.

According to another aspect of the present invention, there is provided a method of driving an electric sign board, wherein a display is provided that compares frame data included in input image information with a time difference and, when repeated, repeats according to whether pixel information of the frame data is repeated. The system is characterized by switching from a main display system to a backup display system.

According to the present invention, the malfunction time of the display board is reduced, the operator is convenient, and the reliability of the product is improved.

The present invention can be clearly understood by the examples presented below, but this is only one preferred example.

1 is a block diagram of a signboard driving system according to an embodiment.

Referring to FIG. 1, a light emitting panel 5 provided with a plurality of light emitting devices, which are illustrated as light emitting diodes, is provided to provide an image, and an image processor which processes an image signal output to the light emitting panel 5 and transmits the image signal to the light emitting panel 5. 1) and a divider 2 for distributing video signals input from the main play system 3 and the backup play system 4 to the image processor 1. Here, the electronic sign 5 is composed of a plurality of modules, it is possible to replace, repair, etc. for each module. The image processing unit 1 is thus responsible for the distribution of the image signal supplied to each module constituting the electronic sign (5). Both the main play system 3 and the backup play system 4 may be in a state in which image information to be output to the electronic display board 5 is provided together at the same time. The main play system 3 and the backup play system 4 may include a storage system for storing each image displayed on the display board 5 and a control system for controlling the storage system.

By using the DVI (Digital Video / visual Interactive) protocol, the electric signboard driving system can be easily transmitted and implemented in high quality image data from the play system 3 and the image processing unit 1. .

The detailed configuration of the image processing unit 1 will be described.

The image processing unit 1 includes a control unit 11 which controls the image processing unit 1 as a whole, a memory 13 which temporarily stores and outputs an image received from the distributor 2 under the control of the control unit 11, Under the control of the controller 11, an image output unit 14 for outputting an appropriate image signal to each module constituting the display board 5, and an exchange signal between the control unit 13 and the memory 13 is read out to display an image. Frame data comparison unit 12 for comparing the frame data to be included is included.

The frame data comparison unit 12 reads a frame output from the control unit 11 to the memory 13 or from the memory 13 to the control unit 11 again. The frame data comparison unit 12 determines whether image information input through the distributor 2 in the current state is normal information.

Specifically, if a problem occurs in the main play system 3 and a normal video is not output from the main play system 3, the video information input to the image processing unit 1 is repeated at the same frame or in a constant period (first case). The repeated frame is input (in the second case). In the first case, the frame data comparison unit 12 may check whether each frame of the image is repeated for a predetermined time. For example, it may be determined whether approximately 90 frames input for three seconds are frames having the same pixel information, and if so, it may be determined that a problem has occurred in the current main play system 3. In the second case, the frame data comparison unit 12 stores the pixel information of each frame forming the image, and has a second frame having a pixel that is somewhat equal to the pixel information of the first frame within a predetermined time period. Is inputted, and after that, a time interval between the first frame and the second frame is given, and then, once again, whether or not the same video is repeated, a problem has occurred in the current main play system 3 Can be determined. Of course, such a method is only an example, and there may be other methods for determining the first case and the second case. For example, in order to reduce the amount of computation required in each determination process, it is also possible to compare the pixel information only for a certain portion of each frame (for example, the center portion of the frame).

Meanwhile, except for the first case and the second case, there may be other error states. For example, when the main play system 3 is in operation but no frame information is input at all, or the same color is continuously output for a certain time, an error occurs in the main play system 3 easily. Can be determined. In this case, the same frame is repeatedly input as in the first case and the second case. In any case, the image processing unit 1 can determine whether the image is normally operated by judging each frame information providing the image.

The image output unit 4 distributes and outputs accurate frame information corresponding to each module constituting the electronic display panel 5 under the control of the control unit 11.

An output line and a control line are respectively set between the distributor 2 and the image processor 1. The output line is a line through which the image information selected and distributed by the distributor 2 is output to the image processor 1 side, and the control line is the main play system 3 determined by the image processor 1. Error condition information is a path to the distributor (2) side. The error state information transmitted from the control line is transferred to the distributor 2 to change the source of the image information from the main play system 3 to the backup play system 4. Thereafter, the image information output from the backup play system 4 is selected by the distributor 2, and the selected image information is input to the image processing unit 1 and output to the electronic display panel 5. For this purpose, the main play system 3 and the backup play system 4 may preferably be provided as a system which always outputs the same image information. In another case, when it is determined by the image processing unit 1 that a problem has occurred in the main play system 3, it is transmitted to the distributor 2 via the control line, and the information is transferred to the backup play system 4. After that, the backup play system 4 may be operated. However, in such a case, there may be a problem that the startup of the backup play system 4 becomes slow and it is difficult to determine the exact frame position. Thus, the main play system 3 and the backup play system 4 always have the same video information. It would be more desirable to have it set to the exporting state. However, the present invention may not be regarded as excluding the other case.

2 is a flowchart illustrating a method of driving an electric signboard according to an exemplary embodiment of the present invention.

Referring to FIG. 2, first, when the electronic sign is operated, the main play system 3 and the backup play system 4 operate together, and image information output from each play system is output to the distributor 2. In the distributor 2, the image information input from the main play system 3 is input to the image processing unit 1 as an initial option.

The image processor 1 detects an input frame from the image information input through the distributor 2 (S1).

Then, the input frame of the input image information is continuously scanned by the image processing unit 1, and it is determined whether the same frame is repeated (S2).

When it is determined that there is no change in the frame data by checking the change of the frame data for a predetermined time, it is determined that there is no problem in the main play system 3 (S4), and it is determined whether to continue to operate the electronic display board (S4). S5), if the operation continues, the process advances to the step S1 of detecting the input frame, otherwise ends.

However, as a result of determining whether the same frame is repeated (S2), if the same frame is repeated, it is determined that an error has occurred in the main play system 3 at this time, and the source of the image information is transferred from the main play system to the backup play system. Switch (S3). Then, the image information output from the backup play system is normally output, and the normal image information is output from the display board 5.

And, although not directly related to the implementation of the embodiment described above, when the play system is transferred from the main play system (3) to the backup play system (4), such transfer facts are transferred to the manager of the billboard and the main play system It would be desirable to have the maintenance work done. Thus, it is desirable to enable the backup play system 4 to respond quickly when a problem occurs.

According to the above-described embodiments, the problem of customer dissatisfaction with the stoppage of the signboard which may occur during manual switching is improved, the system can be operated stably even without the operator, and can be caused by rebooting the main display system. The problem of shortening the life of a system and reducing the stability of the system can be solved.

Modifications of the above-described embodiments are given. The above embodiment may constitute one perfect embodiment per se, but may have another embodiment as a more convenient embodiment. For example, the play system (3) (4) is proposed to perform only the role of generating the image information, but is not limited to this network to transmit error information from the distributor (2) to the remote administrator May be connected to

As another variation, in the embodiment, the frame data comparison unit 12 is connected to the memory 13 and the control unit 11 to determine whether the frame is repeated, but is not limited thereto. . For example, the frame data comparison unit 12 may be performed by comparing information immediately before being connected and output between the control unit 11 and the image output unit 14. However, since the memory 13 primarily stores the image information output from the distributor 2 and is the first position to receive the information, the memory 13 can identify the error of the main play system 3 most quickly. It is more preferable.

As another variation, the embodiment has been described as comparing image information of all frames, but the present invention is not limited to such a case, and the main play system is also determined by determining whether to repeat a particular module constituting the electronic display board. The error of (3) can be confirmed. In this case, since the amount of calculation is reduced, it may be preferably applied, but there may be a problem that the error cannot be properly determined by checking only a single module. However, in the implementation of the idea of the present application can be seen to have the same configuration and effect.

As a further variant, the embodiment only shows the case where two display systems are connected, but it is also conceivable that three or more display systems are connected, in which case the cost is increased and the choice is increased. In this case, the reliability of the electric signboard operation can be expected to be further improved.

In still another variation, the distributor may be separately provided outside the image processor, but may be located directly inside the image processor, and thus may be used by a switching block of the image processor. However, there is a disadvantage in that a lot of information input to the image processing unit and a large load on the image processing unit provided to the FPGA to process the information.

According to the present invention, it is possible to expect the advantage that the operation reliability is improved by reducing the malfunction of the electric signboard, it can be expected the advantage that the operator is convenient.

1 is a block diagram of a signboard drive system according to an embodiment of the present invention.

2 is a flowchart illustrating a method of driving an electric signboard according to an embodiment of the present invention.

Claims (5)

At least two display systems; Selectively receives and processes image information output from the at least two display systems, Comparing the frame data included in the image information with a time difference, If it is not normal to determine whether the current display system currently providing image information is operating normally, A system different from the current display system, the image processing unit receiving image information from another display system among the at least two display systems; And And a sign board for outputting image information output from the image processor. The method of claim 1, Select and output at least one of the at least two display systems, Changing the current display system in response to a control signal from the image processor; The display board driving system is provided with a distributor outside the image processing unit. The method of claim 2, Between the distributor and the image processing unit, An output line for outputting the image information from the distributor to the image processor; And a control line for outputting the control signal from the image processor to the distributor. By comparing the frame data included in the input image information with a time difference, And a display system for providing image information from the main display system to a backup display system when the frame data is repeated according to whether the frame information is repeated. The method of claim 4, wherein And the pixel information includes at least one of pixel information of the entire frame, pixel information of a predetermined portion of the frame, or pixel information of at least one module constituting an electronic board.

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