CN114038404A - Display data distribution method of improved display module - Google Patents
Display data distribution method of improved display module Download PDFInfo
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- CN114038404A CN114038404A CN202111359606.0A CN202111359606A CN114038404A CN 114038404 A CN114038404 A CN 114038404A CN 202111359606 A CN202111359606 A CN 202111359606A CN 114038404 A CN114038404 A CN 114038404A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
Abstract
The invention discloses a display data distribution method of an improved display module, which comprises the following steps: a) splicing the N × M display module rectangular arrays, wherein the N × M display module rectangular arrays comprise N rows of display modules and M rows of display modules; the display modules in the same row are sequentially connected in series, and the first display module in each row is connected with the main control unit; b) the main control unit divides the current frame image into N groups of display data and outputs a group of corresponding display data to the first display module of each column; c) the display module receives the display data, intercepts the display data with the specified amount at the same time, and outputs the display data which is not intercepted to the next display module; d) and c), the rest display modules operate according to the step c) until all the display modules intercept the display data, and the display data distribution of the current frame image is completed. The effect of accurate distribution of display data can be realized without writing addresses in the display module.
Description
Technical Field
The invention relates to the technical field of LED display screens, in particular to a display data distribution method of an improved display module.
Background
In the prior art, the LED display module includes a main control unit and a display module, a plurality of display module rectangular arrays are spliced to form a screen body, and each display module is written with an address belonging to the display module. When the display device runs, the main control unit outputs data to each display module, and each display module intercepts corresponding data flow in the data bus according to the address of the display module, so that the expected display effect is achieved.
Since the address is stored in the display module, after the display module is replaced or the position of the display module is exchanged, the correct address needs to be rewritten into the replaced or exchanged display module in order to make the entire screen normally display. The address writing of the display module usually requires manual operation of an operator, which is very inconvenient for maintenance.
Therefore, it is very urgent to design a display data allocation method that can normally display without writing addresses.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for distributing display data of an improved display module according to the above-mentioned deficiencies of the prior art, which solves the problems that an address needs to be preset manually and cannot be adjusted automatically.
The technical scheme of the invention is realized as follows:
the display data distribution method of the improved display module comprises the following steps:
a) splicing the N × M display module rectangular arrays, wherein the N × M display module rectangular arrays comprise N rows of display modules and M rows of display modules; the display modules in the same row are sequentially connected in series, and the first display module in each row is connected with the main control unit;
b) the main control unit divides the current frame image into N groups of display data and outputs a group of corresponding display data to the first display module of each column;
c) the display module receives the display data, intercepts the display data with the specified amount at the same time, and outputs the display data which is not intercepted to the next display module;
d) and c), the rest display modules operate according to the step c) until all the display modules intercept the display data, and the display data distribution of the current frame image is completed.
Further, the method also comprises the following steps: e) repeating the steps b) to d) for a plurality of times to enable the display module to play the video.
Further, the step b) is specifically as follows: the main control unit divides the current frame image into N groups of display data according to the display point number and the position relation of each row of display modules, and outputs a group of corresponding display data to the first display module of each row.
Further, in the step b), the display data is composed of M groups of sub-data, one group of sub-data corresponds to the display data required by one display module, and the output sequence of the sub-data is consistent with the serial sequence of the corresponding display module.
Further, the step c) is specifically as follows: and the display module receives and intercepts the display data, counts and accumulates the data volume of the intercepted display data to obtain the counted volume, stops intercepting the display data when the counted volume is equal to the specified volume, and outputs the display data which is not intercepted to the next display module.
By adopting the technical scheme, the invention has the beneficial effects that: the effect of accurate distribution of display data can be realized without writing addresses in the display module; meanwhile, after the display module is replaced or the position of the display module is changed, manual adjustment of an operator is not required to be changed, and the whole screen can normally display.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of steps a) to e) in the first embodiment (sequence numbers (r)/c indicate a serial sequence or an output sequence).
In the figure, 10-display module, 20-main control unit, 30-display data, 31/32/33-subdata.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a method for distributing display data of an improved display module, which includes the following steps:
a) the N × M display modules 10 are spliced in a rectangular array and comprise N columns of display modules 10 and M rows of display modules 10; the display modules 10 in the same row are sequentially connected in series, and the first display module 10 in each row is connected with the main control unit 20. The series connection sequence of the display modules 10 is specifically: in the display modules 10 in the same column, the display modules 10 are sequentially connected in series from bottom to top, the lowermost display module 10 is the first display module 10, and the uppermost display module 10 is the last display module 10. In fig. 1, serial numbers (r)/(c)/((c)) in the display module 10 indicate a serial sequence.
b) The main control unit 20 divides the current frame image into N groups of display data 30 and outputs a group of corresponding display data 30 to the first display module 10 of each column. The method specifically comprises the following steps: the main control unit 20 divides the current frame image into N groups of display data 30 according to the display point number and the position relationship of each row of the display modules 10, and outputs a group of corresponding display data 30 to the first display module 10 in each row. Each group of display data 30 is composed of M groups of sub-data 31/32/33, one group of sub-data 31/32/33 corresponds to display data required by one display module 10, and the output sequence of the sub-data 31/32/33 is consistent with the serial sequence of the corresponding display module 10. In fig. 1, sequence numbers (r)/(c)/((c)) in sub-data 31/32/33 indicate an output order.
c) The display module 10 receives the display data while intercepting a designated amount of the display data, and outputs the display data that is not intercepted to the next display module 10. The method specifically comprises the following steps: the display module 10 receives and intercepts the display data, counts and accumulates the data amount of the intercepted display data to obtain a count amount, and when the count amount is equal to a specified amount, the display module 10 stops intercepting the display data and outputs the display data which is not intercepted to the next display module 10.
d) And c) operating the rest display modules 10 according to the step c) until all the display modules 10 intercept the display data to complete the display data distribution of the current frame image.
e) Repeating the steps b) to d) for a plurality of times to enable the display module 10 to play the video.
It should be noted that: in this embodiment, the display points in each display module 10 are consistent, and the data volumes required for displaying the points are consistent, that is, the data volumes of the display data required for each display module 10 are consistent, and the data volumes of each group of sub-data 31/32/33 are consistent. Since the data amount of the display data required for each display module 10 is uniform, the data amount intercepted by each display module 10 is uniform. Furthermore, since the output sequence of sub-data 31/32/33 is consistent with the serial sequence of its corresponding display modules 10, each display module 10 can accurately intercept the required display data and make the current frame image normally displayed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The display data distribution method of the improved display module is characterized by comprising the following steps:
a) splicing the N × M display module rectangular arrays, wherein the N × M display module rectangular arrays comprise N rows of display modules and M rows of display modules; the display modules in the same row are sequentially connected in series, and the first display module in each row is connected with the main control unit;
b) the main control unit divides the current frame image into N groups of display data and outputs a group of corresponding display data to the first display module of each column;
c) the display module receives the display data, intercepts the display data with the specified amount at the same time, and outputs the display data which is not intercepted to the next display module;
d) and c), the rest display modules operate according to the step c) until all the display modules intercept the display data, and the display data distribution of the current frame image is completed.
2. The method for distributing display data of an improved display module according to claim 1, further comprising the steps of: e) repeating the steps b) to d) for a plurality of times to enable the display module to play the video.
3. The method for distributing display data of an improved display module according to claim 1, wherein step b) is specifically: the main control unit divides the current frame image into N groups of display data according to the display point number and the position relation of each row of display modules, and outputs a group of corresponding display data to the first display module of each row.
4. The method for distributing display data of an improved display module according to claim 1, wherein in step b), the display data is composed of M groups of sub-data, one group of sub-data corresponds to display data required by one display module, and an output sequence of the sub-data is consistent with a series sequence of the corresponding display modules.
5. The method for distributing display data of an improved display module according to claim 1, wherein step c) is specifically: and the display module receives and intercepts the display data, counts and accumulates the data volume of the intercepted display data to obtain the counted volume, stops intercepting the display data when the counted volume is equal to the specified volume, and outputs the display data which is not intercepted to the next display module.
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2021
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