KR100958611B1 - Display system - Google Patents

Abstract

PURPOSE: A display system is provided to output an image suitable for a location of LED modules without separately changing image data even though arrangement of LED modules is changed in an LED panel. CONSTITUTION: A video data storage(21) receives and stores video data for a video frame displayed on an LED(Light Emitting Diode) panel from an external video output device. A coordinate data storage(22) receives and stores coordinate data showing locations of LED modules included in the LED panel from the video output device. A memory controller(23) approaches to the video data storage based on the coordinate data to sequentially provide video data corresponding to the LED modules.

Description

Display System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display system, and more particularly, to an LED display system in which the arrangement of light emitting diode (LED) modules is variously changed.

A representative example of the display system using the LED is an LED signboard or an electronic bulletin board, which is a system for displaying various information as a still image or a video. Such billboards are used for stadiums, conference rooms, small theaters, commercials, race tracks, soccer fields, baseball fields, etc., multi-visions, waiting rooms, platform, road signals, etc. It is widely used for message delivery.

Such an LED signboard arranges a plurality of LEDs in a matrix form, and a plurality of LEDs arranged in a matrix form forms pixels for displaying an image, thereby enabling display of an image.

One such display system is a channel lighting system or landscape lighting system configured to freely place LED modules, where the LED module is a particular LED array (eg, R, G, B = 3: 3: 3) is formed as a dot, and is a module form including a drive unit capable of controlling such a dot. At this time, one LED array forms one dot data. Such a channel lighting system or a landscape lighting system has conventionally played an auxiliary role of directly or indirectly illuminating a backlight of a general signage or the surrounding landscape, but in recent years, has served as an LED display medium capable of displaying an image. . In this case, in the interface between the LED panel on which the LED modules are arranged and the control device for controlling the LED panel, since the distance is far, the module has a serial interface structure through the module.

In the general case of such a display system, although the LED modules have a form of LED panels arranged in a regular form, the shape of the LED panel may be variously changed by changing the arrangement of the LED modules. Therefore, as the arrangement of the LED modules in the LED panel is changed, the transmission order of data for the image is changed even when the same image is to be produced.

In addition, such a display system does not use a picture or a video such as SWF, BMP, or AVI, which is a general video format, but rearranges and processes data for a video according to the shape of an LED panel, thereby creating a new file for presentation. It creates and directs an image using the generated presentation file. In the form of such an LED panel, that is, a structure in which the arrangement of the LED modules included in the LED panel is changed, the capacity of the LED panel is larger than that of a general image format, in addition to re-creating the presentation file as described above. Therefore, when the same video is produced at the same time, the capacity of the video format is increased.

As such, when the arrangement of the LED modules included in the LED panel is changed, since the user can change and display the image arbitrarily because it cannot be used universally, there is a limit as the display device. .

An object of the present invention is to provide a display system that can output an image corresponding to the position of the LED module without converting the image data even if the arrangement of the LED module in the LED panel is changed.

The display system according to the present invention for solving the above problems includes a plurality of LED modules, the arrangement of the plurality of LED modules can be variously changed LED panel; And an LED control device for controlling the plurality of LED modules, wherein the LED control device comprises: an image data storage unit configured to store image data of an image frame displayed on the LED panel; A coordinate data storage unit for storing coordinate data indicating a position of each of the plurality of LED modules in coordinates in the LED panel; And a memory controller which sequentially accesses image data corresponding to each coordinate of the coordinate data among the stored image data, and sequentially outputs the image data corresponding to each of the plurality of LED modules.

The coordinate data may be updated according to the arrangement of the plurality of LED modules. The LED control device may further include a data transmission controller for transmitting the image data sequentially output from the memory controller according to a protocol of the LED panel.

The image data storage unit receives the image data from an external image output device, stores the received image data, and the coordinate data storage unit receives the coordinate data from the external image output device, and receives the Saved coordinate data can be stored. The memory controller may output image data corresponding to a predetermined LED module among the plurality of LED modules according to the coordinate data.

Each of the plurality of LED modules includes: an array unit including a red LED array having a plurality of red LEDs, a green LED array having a plurality of green LEDs, and a blue LED array having a plurality of blue LEDs; A driver including a red driver driving the red LED array, a green driver driving the green LED array, and a blue driver driving the blue LED array; And a controller for controlling each of the red driver, the green driver, and the blue driver according to the image data received from the data transmission controller.

The display system may be an LED sign.

In addition, a display system according to the present invention for solving the above problems includes a plurality of LED modules, the arrangement of the plurality of LED modules is a LED panel that can be variously changed; An LED control device for controlling the plurality of LED modules; And a mobile storage device detachably connected to the LED control device, the mobile storage device storing coordinate data indicating a position of each of the plurality of LED modules in coordinates in the LED panel, wherein the LED control device includes the LED panel. An image data storage unit which stores image data of an image frame displayed on the screen; And a memory controller accessing image data corresponding to each coordinate of the coordinate data among the stored image data, and sequentially outputting the image data corresponding to each of the plurality of LED modules.

According to the present invention, the LED control device is an image data storage unit for storing the image data, a coordinate data storage unit for storing the coordinate data indicating the position of each of the plurality of LED modules in the LED panel, and the coordinates of the stored image data Accessing the image data corresponding to each coordinate of the data, including a memory controller for sequentially outputting the image data corresponding to each of the plurality of LED modules, the image data when the arrangement of the LED modules in the LED panel is freely changed Since the transmission order of the image data can be controlled using the coordinate data without changing itself, free image display is possible on the LED panel.

In addition, even if the position of the LED module is changed by the user, since the coordinate data can be updated to display the intended image without changing the image data itself, the user can freely change the position of the LED module to display the desired image. . In addition, since the transformation on the image data itself does not have to be performed, it can be effectively applied to the real-time image.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. The same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

1 is a schematic block diagram illustrating a display system according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the display system 1 includes an image output device 10, an LED control device 20, and an LED panel 30. Here, the LED panel 30 includes a plurality of LED modules 31, 32,..., 36, and the plurality of LED modules 31, 32,..., 36 in the LED panel 30. The arrangement of) may vary. In addition, although not shown in FIG. 1, the LED panel 30 may further include a plurality of LED modules 31, 32,..., 36 as well as other equipment necessary for displaying an image. In FIG. 1, the image output device 10 is illustrated as a device included in the display system 1. However, in another exemplary embodiment, the image output device 10 may be an external device.

In one embodiment of the invention, the display system is a channel system in which the arrangement of the LED modules is free and variable. Hereinafter, a case in which the display system is an LED channel system will be described. However, the present invention is not limited thereto, and another embodiment of the present invention may be an LED display device rather than an LED channel system.

FIG. 2 is a block diagram illustrating an example in which a plurality of LED modules are arranged in a dot matrix in the LED panel of FIG. 1.

Referring to FIG. 2, those circled in the LED panel 30 represent a plurality of LED modules. In general, the plurality of LED modules in the LED panel 30 form a dot matrix structure. In the example of FIG. 2, the LED panel 30 has a matrix structure in which 1024 LED modules are connected in series for each line, and seven lines of these series-connected LED modules are connected.

As such, when a plurality of LED modules are regularly arranged according to a dot matrix structure, the LED control apparatus 20 may transmit image data having the same pattern in a serial manner through the interface 25. In other words, the LED control apparatus 20 may transmit image data corresponding to the image frame in a serial manner. Specifically, since the arrangement of the plurality of LED modules in the LED panel 30 is the same arrangement as the data arrangement provided in the image output device 10, the LED control device 20 may be arranged in the LED panel 30 in the order in which data is input. Deliver to LED modules. That is, the LED control device 20 is 1-> 2-> 3-> 4-> ...> 1024 or 1024-> 1023-> 1022-> 1021-> ... Pass data in order of> 1.

FIG. 3 is a block diagram illustrating an example of a case where an arrangement of a plurality of LED modules is changed in the LED panel of FIG. 1.

Referring to FIG. 3, 56 series connected LED modules are disposed in the LED panel 30. At this time, since the LED modules do not have a dot matrix structure, conversion to image data has to be performed in the LED control device 20. In the case where the arrangement of the LED modules in the LED panel 30 is variously changed, whenever the arrangement is changed, the conversion to the image data in the LED control device 20 has to be performed.

Specifically, the position of the changed LED modules has to be corrected by rearranging the image frames and converting the image data according to the changed arrangement of the LED modules. In this case, the image data is converted so that the image cannot be viewed by a device other than the LED panel 30, specifically, a monitoring device such as an LCD or a PDP. Also, in this case, since the process of changing the produced image to the corrected data that cannot be visually recognized must be performed, it is difficult to apply to the real-time image.

Referring back to FIG. 1, the image output apparatus 10 includes an image data output unit 11 and a coordinate data output unit 12. In detail, the image output device 10 may be an external device that is spaced apart from the LED control device 20 and the LED panel 30 by a predetermined distance. For example, the image output device 10 may be a computer. have.

The image data output unit 11 outputs an image frame to be displayed on the LED panel 30, specifically, image data representing a video frame. Here, the image data is R, G, and B data and is input to each of the plurality of LED modules 31, 32,..., 36 to display an image.

4 illustrates image data output from the image data output unit of FIG. 1.

Referring to FIG. 4, when the vertical sync signal Vsync is logic 'high', the image data, ie, R, is performed every time the display enable signal DEN is enabled, that is, in each of the logic 'high' regions. , G, B data is output. Here, each time the display enable signal DEN is enabled, 1024 pieces of R, G, and B data are output.

In this case, when the LED modules in the LED panel 30 are arranged in a dot matrix structure, 1024 R, G, and B data are sequentially input to the plurality of LED modules 31, 32,..., 36. Can be. For example, 1024 pieces of R, G, and B data correspond to the LED modules on the first line in the dot matrix structure of FIG. 2 in a 1: 1 manner, and are transmitted to the corresponding LED modules.

Referring back to FIG. 1, the coordinate data output unit 12 outputs coordinate data indicating an arrangement of the plurality of LED modules 31, 32,..., 36 included in the LED panel 30. Here, the coordinate data is updated when the arrangement of the plurality of LED modules 31, 32,... 36 in the LED panel 30 is changed. In this case, the coordinate data is generated according to the arrangement of the plurality of LED modules 31, 32,..., 36 based on the absolute coordinates of the LED panel 30.

5 shows the absolute coordinates of the XGA class LED panel.

Referring to FIG. 5, the XGA class LED panel has 1024 LED modules in the X direction and 768 LED modules in the Y direction. At this time, the absolute coordinates are represented by (X, Y), such as (1, 1), (1, 2), and the like.

FIG. 6 shows coordinate data when the LED module is arranged as shown in FIG. 3.

Referring to FIG. 6, the coordinates of the 56th LED module among the 56 serially connected LED modules in FIG. 3 are (1, 9), and the coordinates of the first LED module are (7, 1).

Referring back to FIG. 1, the LED control device 20 includes a plurality of LED modules, including an image data storage unit 21, a coordinate data storage unit 22, a memory controller 23, and a data transmission control unit 24. According to the arrangement of the fields 31, 32, ..., 36, image data corresponding to each of the plurality of LED modules 31, 32, ..., 36 are sequentially transmitted.

The image data storage unit 21 may receive image data from the image data output unit 11 included in the image output device 10, store the received image data, and be implemented as a memory. In this case, the image data stored in the image data storage 21 may be in the format shown in FIG. 4. In addition, the coordinate data storage unit 22 may receive coordinate data from the coordinate data output unit 12 included in the image output device 10, store the received coordinate data, and be implemented as a memory.

The memory controller 23 receives coordinate data from the coordinate data storage unit 22 and accesses the image data storage unit 21 based on the received coordinate data. Subsequently, the memory controller 23 sequentially reads image data corresponding to each of the LED modules 31, 32,..., 36 from the image data storage unit 21 according to the coordinate data, and sequentially outputs the image data. .

For example, the memory controller 23 receives the coordinate data shown in FIG. 6 from the coordinate data storage 22. In this case, since the first coordinate is (1, 9), the memory controller 23 stores the R, G, and B stored in the image data storage unit 21 according to (1, 9), which is the coordinate of the received coordinate data. The image data corresponding to (1, 9) among the image data is read and output. Subsequently, since the second coordinate is (1, 10), the memory controller 23 stores the image data of R, G, and B stored in the image data storage unit 21 according to (1, 10), which is the coordinate of the received coordinate data. Image data corresponding to (1, 10) are read and output. In this manner, the memory controller 23 sequentially outputs image data according to the coordinates of the coordinate data.

Conventionally, when the arrangement of the plurality of LED modules 31, 32, ..., 36 in the LED panel 30 is changed accordingly, the plurality of LED modules 31, 32, ..., 36 accordingly ) Had to be converted. Therefore, image data input to the plurality of LED modules 31, 32,..., 36 in the image output device 10 or the LED control device 20 has to be converted.

However, according to the present embodiment, the coordinate data storage unit 22 included in the LED control device 20 receives updated coordinate data according to the arrangement of the plurality of LED modules 31, 32,..., 36. Since the data is stored, the LED control device 20 controls only the output order of the image data by using the updated coordinate data stored in the coordinate data storage unit 22 without undergoing a separate conversion process for the image data itself.

The data transmission controller 24 transmits image data output from the memory controller 23 according to the protocol of the LED panel 30. In detail, the data transmission controller 24 transmits image data according to a protocol of a driver included in the LED module or a driver IC (not shown) included in the LED panel 30.

The LED panel 30 includes a plurality of LED modules 31, 32,..., 36, so that each LED module 31, 32,..., 36 emits a specific color, thereby providing a still image. Or display a video. For example, the LED panel may be implemented in various forms such as an advertising signboard, a plate-type advertising signboard, and the like.

FIG. 7 is a block diagram illustrating an LED module disposed on the LED panel of FIG. 1.

Referring to FIG. 7, the LED module 31 includes a power supply unit 311, a controller 312, a driver 313, and an LED array unit 314. Hereinafter, only one LED module 31 of the plurality of LED modules 31, 32, ..., 36 will be described, but each of the plurality of LED modules 31, 32, ..., 36 It has a similar structure.

The power supply unit 311 supplies operating power to the controller 312 and the driver 313. The controller 312 controls each of the red driver 3131, the green driver 3132, and the blue driver 3133 according to the image data received from the data transmission controller 24.

The driver 313 includes a red driver 3131 for driving the red LED array 3141, a green driver 3132 for driving the green LED array 3314, and a blue driver 3133 for driving the blue LED array 3143. It includes. Accordingly, the driver 313 drives the LED array unit 314 to cause the LED array unit 314 to emit a specific color under the control of the controller 312. Specifically, the driving unit 313 applies a driving voltage to drive the LED array units 3141, 3142, and 3143 under the control of the controller 312, or flows a driving current of a predetermined size, thereby driving each LED array unit. (3141, 3142, 3143) are driven.

The LED array unit 314 includes a red LED array 3141 having a plurality of red LEDs, a green LED array 3142 having a plurality of green LEDs, and a blue LED array 3143 having a plurality of blue LEDs.

8 is a block diagram schematically illustrating a display system according to another exemplary embodiment of the present invention.

Referring to FIG. 8, the display system 2 includes an image output device 40, an LED control device 50, and an LED panel 60. In this case, the LED control device 50 may be connected to the removable mobile storage device 70. Here, the mobile storage device 70 stores coordinate data, which may be a universal serial bus (USB) device, an SD card, or the like.

The image output device 40 includes an image data output unit 41, and the LED control device 50 includes an image data storage unit 51, a memory controller 52, and a data transmission control unit 53. Panel 60 includes a plurality of LED modules 61, 62,..., 66. In this case, detailed description of components corresponding to those included in the display system 1 of FIG. 1 will be omitted.

As shown in FIG. 8, the LED control device 50 may not include a coordinate data storage separately, and the memory controller 52 may access the mobile storage device 70 and store the data in the mobile storage device 70. Receive coordinate data. Subsequently, the memory controller 52 approaches the image data storage 51 based on the received coordinate data, sequentially reads the image data corresponding to the coordinates, and transmits the image data to the data transmission controller 53.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited to the above-described embodiments, which can be modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications will fall within the scope of the invention.

In addition, the system according to the present invention can be embodied as computer readable codes on a computer readable recording medium. Computer-readable recording media include all types of recording devices that store data that can be read by a computer system. Examples of the recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and also include a carrier wave (for example, transmission through the Internet). The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

1 is a schematic block diagram illustrating a display system according to an exemplary embodiment of the present invention.

FIG. 2 is a block diagram illustrating an example in which a plurality of LED modules are arranged in a dot matrix in the LED panel of FIG. 1.

FIG. 3 is a block diagram illustrating an example of a case where an arrangement of a plurality of LED modules is changed in the LED panel of FIG. 1.

4 illustrates image data output from the image data output unit of FIG. 1.

5 shows the absolute coordinates of the XGA class LED panel.

FIG. 6 shows coordinate data when the LED module is arranged as shown in FIG. 3.

FIG. 7 is a block diagram illustrating an LED module disposed on the LED panel of FIG. 1.

8 is a block diagram schematically illustrating a display system according to another exemplary embodiment of the present invention.

Claims (9)

A plurality of light emitting diode (LED) modules, the arrangement of the plurality of LED modules being variously alterable LED panel; And An LED control device for controlling the plurality of LED modules, The LED control device, An image data storage unit for receiving image data of an image frame displayed on the LED panel from an external image output device and storing the received image data; A coordinate data storage unit for receiving coordinate data indicating coordinates of each of the plurality of LED modules in the LED panel from the external image output device and storing the received coordinate data; And An image corresponding to each coordinate of the coordinate data among the image data stored in the image data storage unit by receiving the coordinate data from the coordinate data storage unit and accessing the image data storage unit based on the received coordinate data A memory controller configured to read data and sequentially provide the image data corresponding to each of the plurality of LED modules to the plurality of LED modules, When the arrangement of the plurality of LED modules is changed, the image data is not newly processed or changed according to the arrangement of the plurality of LED modules, and the coordinate data is changed according to the arrangement of the plurality of LED modules. The memory controller controls the transmission order of the image data provided to the plurality of LED modules by using the changed coordinate data. delete The method of claim 1, The LED control device, And a data transmission control unit configured to transmit the image data sequentially output from the memory controller according to a protocol of the LED panel. delete The method of claim 3, The memory controller, The display system according to the coordinate data, characterized in that for outputting the image data corresponding to a predetermined LED module of the plurality of LED modules. The method of claim 3, Each of the plurality of LED modules, An array unit including a red LED array having a plurality of red LEDs, a green LED array having a plurality of green LEDs, and a blue LED array having a plurality of blue LEDs; A driver including a red driver driving the red LED array, a green driver driving the green LED array, and a blue driver driving the blue LED array; And And a controller for controlling each of the red driver, the green driver, and the blue driver according to the image data received from the data transmission controller. The method of claim 1, And the display system is an LED sign. A plurality of LED modules, the arrangement of the plurality of LED modules being variously changeable LED panel; An LED control device for controlling the plurality of LED modules; And A mobile storage device detachably connected to the LED control device, the mobile storage device storing coordinate data indicating coordinates of each of the plurality of LED modules in the LED panel; The LED control device, An image data storage unit for receiving image data of an image frame displayed on the LED panel from an external image output device and storing the received image data; And Receiving the coordinate data from the mobile storage device, accessing the image data storage based on the received coordinate data, and corresponding to the respective coordinates of the coordinate data among the image data stored in the image data storage; And a memory controller that sequentially provides the image data corresponding to each of the plurality of LED modules to the plurality of LED modules. When the arrangement of the plurality of LED modules is changed, the image data is not newly processed or changed according to the arrangement of the plurality of LED modules, and the coordinate data is changed according to the arrangement of the plurality of LED modules. The memory controller controls the transmission order of the image data provided to the plurality of LED modules by using the changed coordinate data. delete

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