CN103077679A - Method for combined large-scale LED (light emitting diode) display screen capable of being automatically configured - Google Patents
Method for combined large-scale LED (light emitting diode) display screen capable of being automatically configured Download PDFInfo
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Abstract
The invention discloses a method for a combined large-scale LED (light emitting diode) display screen capable of being automatically configured. According to the method, the correct display and the combined type large-scale LED display screen and the automatic address configuration of each LED module of the large-scale display screen can be realized only through one HDMI (high-definition multimedia interface) input interface, switches and other devices are not needed, the use is simple, and the reliability is also greatly improved. In addition, the method adopts an ASIC (application specific integrated circuit) chip for control, address signals can also be combined into video signals, and the space and the production cost are basically not occupied. The method has the advantages that the large LED screen assembly work can also be simplified, and errors are reduced. In a word, the method has higher practical values.
Description
Technical field
The present invention relates to the control technology field of large LED display screen, particularly a kind of method of the combined large LED display that can automatically configure.
Background technology
LED display is formed by the high brightness LED core array combination of different dot matrix different spacing, take light emitting diode as pixel, forms with epoxy resin and mold encapsulation.It is 4 * 4,4 * 8,5 * 7,5 * 8,8 * 8,16 * 16,24 * 24,40 * 40 etc. multiple that the LED dot matrix has; Number according to pixel is divided into dual base color, three primary colours etc., and is also different according to the color of the contents such as the different shown literal of pixel color, image.Single primary colours dot matrix can only show fixed color such as the red, green, yellow monochrome that waits, the color of dual base color and three primary colours dot matrix displaying contents is lighted array mode by different color LEDs in the pixel and is determined, greenly can show yellow when all bright as red, if according to lighting the time of pulse mode control diode, then can realize 256 or more senior gray scale show and realize that true color shows.
Realization of LED Display System generally is that the smaller screen that will be comprised of a plurality of LED dot matrix combines in the mode that plays with building blocks.The position of smaller screen in large-size screen monitors that each is comprised of the LED dot matrix need to be set, could correct together whole picture disply being finished.The display mode of each module has Static and dynamic to show two kinds in each LED lattice display system.Static displaying principle is simple, control is convenient, but hardware connection is complicated; Generally adopt in actual applications dynamic display types, dynamically show and adopt the mode of scanning to work, the burst pulse larger by peak value drives, constantly each row of display screen is carried out gating one by one from top to bottom, send again simultaneously the pulse signal of presentation graphic or Word message to each row, the above operation of iterative cycles just can show various figures or Word message.
In traditional technology, each smaller screen has the independently control system of oneself, and the order and the data that only need master controller of introducing to control each smaller screen after combining can realize video picture.At present a lot of like products all need to add control box, use complexity, produce expensive.
That is to say, traditional large-size screen monitors show it is to control smaller screen in it by the method for additional hardware, have use complicated, produce expensive shortcoming.Therefore, in the urgent need to a kind of method of the combined large LED display that can automatically configure.
Summary of the invention
Technical matters to be solved by this invention is: how a kind of large LED display screen that does not need additional hardware control is provided.For this reason, the present invention proposes a kind of method of the combined large LED display that can automatically configure, and can eliminate fully because the restriction of prior art and one or more problems that defective causes.
Additional advantages of the present invention, purpose and characteristic, a part will be elucidated in the following description, and another part will be significantly for those of ordinary skill in the art by the investigation to following explanation or acquire from enforcement of the present invention.Can realize and obtain the object of the invention and advantage by the structure of in the instructions of literal and claims and accompanying drawing, pointing out especially.
The invention provides a kind of method of the combined large LED display that can automatically configure, it is characterized in that, said method comprising the steps of:
1), configuration combined large LED display, described combined large LED display is by a HDMI interface receiving video signals, described combined large LED display comprises a plurality of led modules, and each led module includes led array circuit board and the control module that is welded on the described led array circuit board;
Described control module comprises:
Receive the input interface of the ranks number of input;
The addressed memory that the ranks number of input is stored as the address of led module;
Store the ranks of the ranks number of described led module itself and count storer;
The totalizer that the ranks number that ranks number and the described ranks of input are counted the led module itself in the storer carries out addition; And
Horizontal output interface and the longitudinal output interface of the ranks number of output addition;
Described a plurality of led module is arranged with matrix form, and the led module of every row is connected to each other by described horizontal output interface, and each led module that is positioned at first row is connected to each other by described longitudinal output interface.
2), count line number and the columns of storage led array in the storer at described ranks;
3), the led module that is positioned at the first row first row of described combined large LED display receives the address configuration signal of input by the HDMI interface, and described address configuration signal is initial line number and columns; Initial line number and columns that the described led module that is arranged in the first row first row of described combined large LED display will receive store coordinate storage into as the coordinate of this led module;
4), totalizer adds that with the line number of input ranks count the line number of storing in the storer, and the columns of input remains unchanged, and forms new ranks number, and sends described new ranks number to be adjacent the next one the first led module by horizontal output interface;
5), totalizer adds that with the columns of input ranks count the columns of storing in the storer, and the line number of input remains unchanged, and forms new ranks number, and sends described new ranks number to be adjacent the next one the second led module by the longitudinal output interface;
6), the new ranks number that described the first and second led modules will receive stores into respectively in its coordinate storage, and respectively as the coordinate of described the first and second led modules;
Repeat above-mentioned steps 4)-6), until all configure coordinate for all led modules.
Wherein, line number is as horizontal ordinate, and columns is as ordinate.
Preferably, also be provided with comparer in described control module, described comparer is by the coordinate in the described input interface receiving video signals; Wherein,
By described comparer the coordinate of storing in the coordinate that receives and the described coordinate storage is compared, if consistent, then the led module by this comparer place shows the vision signal that receives, otherwise, just described vision signal is sent to the next led module adjacent with described led module.
Preferably, described led array is 128 * 128 led array, and the ranks of each described led module are counted line number and the columns stored in the storer and are 128.
Preferably, initial line number and columns all are set to 0, the led module that is positioned at the first row first row of described combined large LED display receives initial ranks number, and is stored in the described coordinate storage coordinate as this led module.
Preferably, described combined large LED display is comprised of 120 led modules, and described 120 led modules are arranged according to 15 * 8 matrix form.
Preferably, described control module is asic chip.
The present invention only needs a HDMI input interface, can realize the automatic configuration of address of each led module in the large display screen and the correct demonstration of combined large LED display, has the following advantages:
1, adopted asic chip to control, address signal also can be attached in the vision signal, does not substantially take up space and production cost;
2, can simplify the work of assembled LED large-size screen monitors, minimizing makes mistakes;
3, need not switch and other devices, use simply, also greatly improved reliability.
Description of drawings
Fig. 1 is the schematic diagram according to the combined large LED display embodiment of the invention, that can automatically configure.
Fig. 2 is according to the schematic diagram embodiment of the invention, led module.
Fig. 3 is the schematic diagram according to the full HD large LED display screen embodiment of the invention, that be comprised of 120 led modules.
Fig. 4 is according to the structural representation embodiment of the invention, asic chip.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention wherein is described.
Fig. 1 is the schematic diagram according to the combined large LED display embodiment of the invention, that can automatically configure.As shown in Figure 1, combined large LED display 1 is comprised of a plurality of led modules 11, and described led module 11 is the circuit board that comprises led array.According to a preferred embodiment of the present invention, included led array is 128 * 128 led array in each led module 11.Each led module 11 in the combined large LED display has the coordinate of oneself, and for example, coordinate is a:b.The present invention can configure the coordinate of each led module in the large LED display screen automatically, and comprise the coordinate of LED display module in the HDMI vision signal by the input of HDMI interface, the present invention can show corresponding video content at the led module with corresponding coordinate.The below will be described in detail this.
Fig. 3 is the schematic diagram according to the full HD large LED display screen embodiment of the invention, that be comprised of 120 led modules.As shown in Figure 3, led module 11 by 15 row, 8 row can form full HD large LED display screen 1, because each led module 11 includes 128 * 128 led array, the resolution of this full HD large LED display screen that forms according to the embodiment of the invention through simple computation namely as can be known, is: 1920 * 1080.
As shown in Figure 3, the combined large LED display 1 that can automatically configure provided by the invention is comprised of a plurality of led modules 11, and described led module 11 is arranged with the form of matrix, and each led module 11 is the circuit board that comprises led array.
Fig. 2 shows according to the schematic diagram embodiment of the invention, led module.As shown in Figure 2, because each led module 11 is the circuit board that comprises led array, so the present invention has all welded a control asic chip 2 on each led module 11, described asic chip 2 is as control module, play the address of automatic configuration led module, and the function of control led module demonstration.As shown in Figure 2, each asic chip 2 includes 1 input interface and 2 output interfaces.
Fig. 4 shows the composition of described asic chip 2 in more detail.As shown in Figure 4, for the ease of actual design and production, asic chip of the present invention has been taked unified configuration, that is, each asic chip 2 includes 1 input interface 21 and two output interfaces 23,24, use less than output interface can connect by sky.Wherein, output interface 24 is horizontal output interface, and output interface 23 is vertical input interface.Each led module connects by the led module that above-mentioned input interface is connected with output interface.
Specify connected mode between each led module of the present invention below with reference to Fig. 3.
As shown in Figure 3, a plurality of led modules are arranged with matrix form, and the led module of every row is connected to each other by horizontal output interface, and each led module that is positioned at first row is connected to each other by the longitudinal output interface.
In addition, described asic chip 2 also comprises: with input interface 21 and output interface 23,24 totalizer 25 and the comparers 27 that connect are counted storer 27 with the ranks that described totalizer 25 is connected, and are connected the coordinate storage 26 that is connected with comparer with described totalizer 25.The below will describe by the process of introducing LED configuration of the present invention the function of the included modules of ASIC2 in detail.
The present invention at first finishes the automatic configuration of led module address, and then controls the demonstration of led module according to the address of configuration.
The automatic layoutprocedure of following paper led module address:
1), configuration combined large LED display, described combined large LED display is comprised of a plurality of led modules, and each led module includes led array circuit board and the control module that is welded on the described led array circuit board;
Described control module is the asic chip 2 of mentioning before the present invention.Therefore, described control module comprises: an input interface, a horizontal output interface and a longitudinal output interface; With totalizer and the comparer that described input interface is connected with output interface, count storer with the ranks that described totalizer is connected, and the coordinate storage that is connected with comparer with described totalizer;
Described a plurality of led module is arranged with matrix form, and the led module of every row is connected to each other by horizontal output interface, and each led module that is positioned at first row is connected to each other by the longitudinal output interface.
2), count line number and the columns of storage led array in the storer at described ranks;
Be 128 * 128 led array because the present invention adopts, so line number and columns that the ranks of each led module are counted storage in the storer 26 are 128, namely the data of storage are (128,128);
3), be positioned at described combined large LED display the first row first row led module (namely, be positioned at the led module in the described combined large LED display upper left corner) receive the address configuration signal of inputting by the HDMI interface, described address configuration signal is initial line number and columns; Initial line number and columns that the described led module that is arranged in the first row first row of described combined large LED display will receive store coordinate storage into as the coordinate of this led module;
According to a preferred embodiment of the present invention, initial line number and columns all are set to 0, the described led module that is positioned at the first row first row of described combined large LED display receives initial ranks number (0,0), and be stored in the coordinate storage coordinate as this led module;
4), totalizer adds that with the line number of input ranks count the line number of storing in the storer, and the columns of input remains unchanged, and forms new ranks number, and sends described new ranks number to be adjacent the next one the first led module by horizontal output interface;
5), totalizer adds that with the columns of input ranks count the columns of storing in the storer, and the line number of input remains unchanged, and forms new ranks number, and sends described new ranks number to be adjacent the next one the second led module by the longitudinal output interface;
6), the new ranks number that described the first and second led modules will receive stores into respectively in its coordinate storage, and respectively as the coordinate of described the first and second led modules;
Repeat above-mentioned steps 4)-6), until all configure coordinate for all led modules.
Wherein, line number is as horizontal ordinate, and columns is as ordinate.
The below carries out concrete illustrating to above-mentioned steps, in order to can better understand the present invention.
Main thought of the present invention is based on shown in Figure 2, if the address of certain led module is (a, b), pass through so after the processing of asic chip shown in Figure 22, laterally output coordinate (a+x, b), the coordinate of longitudinal output is (a, b+y), wherein, x, y are that ranks are counted line number and the columns of storing in the storer.
At first, the led module of the 1st row the 1st row is defined as (0,0) by HDMI interface receiver address configuration signal with its coordinate; The led module of the 1st row the 1st row also adds that with the line number of input ranks count the line number (0+128=128) of storing in the storer by totalizer, the columns remain unchanged (0) of input, form new ranks number (128,0), new ranks number (128,0) is sent to the led module of the 1st row the 2nd row by horizontal output interface, the led module of the 1st row the 2nd row receives new ranks number (128,0), and with its coordinate as the led module of the 1st row the 2nd row.The like, the coordinate of the led module of the 1st row the 3rd row is (256,0), the coordinate of the led module of the 1st row the 4th row is (384,0).。。。, thus, can finish the address configuration of the led module of the 1st row.
Then, we get back to the led module of the 1st row the 1st row, the totalizer of the led module of the 1st row the 1st row also adds the columns of input that ranks count the columns (0+128=128) of storing in the storer, the line number remain unchanged (0) of input, form new ranks number (0,128), and will this new ranks number (0,128) be sent to the led module that the 2nd row the 1st is listed as by the longitudinal output interface, the led module of the 2nd row the 1st row receives new ranks number (0,128), and with its coordinate as the led module of the 2nd row the 1st row.The like, the coordinate of the led module of the 3rd row the 1st row is (0,256), the coordinate of the led module of the 4th row the 1st row is (0,384).。。。, thus, can finish the address configuration of the led module of the 1st row.
We return the led module of the 2nd row the 2nd row, and as seen from Figure 3, the led module of the 2nd row the 2nd row is downward signal transmission not only, and also signal transmission to the right that is to say, configures the address of the led module of the second row by this led module.Particularly, the led module of the 2nd row the 2nd row receives new ranks number (0,128), with new columns (0,128) as its address, in addition, it also adds that with the line number of input ranks count the line number (0+128=128) of storing in the storer by totalizer, and the columns of input remains unchanged (128), forms new ranks number (128,128), new ranks number (128,128) is sent to the led module of the 2nd row the 2nd row by horizontal output interface, the led module of the 2nd row the 2nd row receives new ranks number (128,128), and with its coordinate as the led module of the 2nd row the 2nd row.The like, the coordinate of the led module of the 2nd row the 3rd row is (256,128), the coordinate of the led module of the 3rd row the 4th row is (384,128).。。。, thus, can finish the address configuration of the led module of the 2nd row.
According to the method described above, can finish the configuration of address of the led module of each row, thereby finish the configuration of the address of each led module in the whole combined large LED display.
By above analysis as can be known, the present invention only need to weld an asic chip at each led array circuit board, and by being each asic chip configuration input/output interface, each led module can be coupled together.Simultaneously, only need simple totalizer and storer are set in asic chip again, input simple initial row columns by the HDMI interface, can finish the address configuration of whole led modules.As seen all led modules of the present invention decide its coordinate by the signal by the input of HDMI interface, do not need from belt switch and other equipment, and automatically generate coordinate after each display screen combination, have greatly improved reliability.
After configuring the address for each led module, the below introduces how to carry out the demonstration of combined large LED display according to the address that arranges.
Comprise coordinate in the vision signal by the input of HDMI interface.As shown in Figure 4, in each control module (that is, asic chip 2) comparer 28 is set, described comparer is by the coordinate in the input interface receiving video signals.Certainly, here relate to mixing and transmission of vision signal and coordinate, and the technology of from mixed signal, extracting coordinate signal, but this only relates to simple signal processing technology, common to those skilled in the art, neither emphasis of the present invention place, therefore in order to save space, omitted the introduction to this partial content.
Described comparer 28 compares the coordinate of storage in the coordinate that receives and the coordinate storage 26, if consistent, then the led module by these comparer 28 places shows the vision signal that receives, otherwise, just described vision signal is sent to the next led module adjacent with described led module.
By carrying out above step, just the vision signal that receives by the HDMI interface can be shown at correct led module.
By above analysis as can be known, whole combined large display screen according to the embodiment of the present invention only needs a HDMI input interface, can realize the automatic configuration of address of each led module in the large display screen and the correct demonstration of combined large LED display, need not switch and other devices, use simply, also greatly improved reliability.In addition, the present invention has adopted asic chip to control, and address signal also can be attached in the vision signal, does not substantially take up space and production cost, and the present invention can also simplify the work of assembled LED large-size screen monitors, and minimizing makes mistakes.In a word, the present invention has higher practical value.
Above content is preferred embodiment of the present invention only, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.
Claims (6)
1. the method for the combined large LED display that can automatically configure is characterized in that, said method comprising the steps of:
1), configuration combined large LED display, described combined large LED display is by a HDMI interface receiving video signals, described combined large LED display comprises a plurality of led modules, and each led module includes led array circuit board and the control module that is welded on the described led array circuit board;
Described control module comprises:
Receive the input interface of the ranks number of input;
The addressed memory that the ranks number of input is stored as the address of led module;
Store the ranks of the ranks number of described led module itself and count storer;
The totalizer that the ranks number that ranks number and the described ranks of input are counted the led module itself in the storer carries out addition; And
Horizontal output interface and the longitudinal output interface of the ranks number of output addition;
Described a plurality of led module is arranged with matrix form, and the led module of every row is connected to each other by described horizontal output interface, and each led module that is positioned at first row is connected to each other by described longitudinal output interface.
2), count line number and the columns of storage led array in the storer at described ranks;
3), the led module that is positioned at the first row first row of described combined large LED display receives the address configuration signal of input by the HDMI interface, and described address configuration signal is initial line number and columns; Initial line number and columns that the described led module that is arranged in the first row first row of described combined large LED display will receive store coordinate storage into as the coordinate of this led module;
4), totalizer adds that with the line number of input ranks count the line number of storing in the storer, and the columns of input remains unchanged, and forms new ranks number, and sends described new ranks number to be adjacent the next one the first led module by horizontal output interface;
5), totalizer adds that with the columns of input ranks count the columns of storing in the storer, and the line number of input remains unchanged, and forms new ranks number, and sends described new ranks number to be adjacent the next one the second led module by the longitudinal output interface;
6), the new ranks number that described the first and second led modules will receive stores into respectively in its coordinate storage, and respectively as the coordinate of described the first and second led modules;
Repeat above-mentioned steps 4) one 6), until all configure coordinate for all led modules.
Wherein, line number is as horizontal ordinate, and columns is as ordinate.
2. the method for the combined large LED display that can automatically configure according to claim 1 is characterized in that, also is provided with comparer in described control module, and described comparer is by the coordinate in the described input interface receiving video signals; Wherein,
By described comparer the coordinate of storing in the coordinate that receives and the described coordinate storage is compared, if consistent, then the led module by this comparer place shows the vision signal that receives, otherwise, just described vision signal is sent to the next led module adjacent with described led module.
3. the method for the combined large LED display that can automatically configure according to claim 2 is characterized in that, described led array is 128 * 128 led array, and the ranks of each described led module are counted line number and the columns stored in the storer and are 128.
4. the method for the combined large LED display that can automatically configure according to claim 2, it is characterized in that, initial line number and columns all are set to 0, the led module that is positioned at the first row first row of described combined large LED display receives initial ranks number, and is stored in the described coordinate storage coordinate as this led module.
5. the method for the combined large LED display that can automatically configure according to claim 1 is characterized in that, described combined large LED display is comprised of 120 led modules, and described 120 led modules are arranged according to 15 * 8 matrix form.
6. the method for the combined large LED display that can automatically configure according to claim 1 is characterized in that, described control module is asic chip.
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Application publication date: 20130501 |