CN105405393B - LED display drive control method and device - Google Patents
LED display drive control method and device Download PDFInfo
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- CN105405393B CN105405393B CN201510893565.1A CN201510893565A CN105405393B CN 105405393 B CN105405393 B CN 105405393B CN 201510893565 A CN201510893565 A CN 201510893565A CN 105405393 B CN105405393 B CN 105405393B
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Abstract
The present invention relates to a kind of LED display drive control method and device, methods described includes step：Raw image data is received, wherein the resolution sizes of raw image data are M*N, and M, N are positive integer；Extracting channel is carried out to raw image data according to screen body configuration parameter and extracts scan-line data filling handling and generating the storage address of view data mapping in memory after processing；And digital independent is carried out according to storage address and is divided into multiple data group synchronization drive control target screen bodies to export view data after processing, the resolution sizes of view data are P*Q after wherein handling, P is positive integer more than M and is the integral multiple of the port number of the LED drive chip of target screen body, Q be the positive integer more than N and be the multiple data group the number of scanning lines in maximum scan line number integral multiple.The present invention is by the extracting channel to target screen body and extracts scan line progress data filling matching, it is possible to achieve the purpose that twilight sunset eliminates.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of LED display drive control method and a kind of LED are shown
Shield drive dynamic control device.
Background technology
A variety of fields that LED display is widely applied in daily life due to the features such as it is visual high and low in energy consumption at present
Close.According to the difference of its application scenario, the size of LED screen body, shape and cabling mode are varied, cause LED display controls
The difficulty more and more higher of system, at the same during display due to many LED screen bodies cabling and lighting mode erratic behavior also
Display screen can be caused the twilight sunset phenomenons such as various bright lines, bright spot occur, leverage the display effect of LED display.It is now logical
It is to light interval time by changing line feed to carry out twilight sunset processing for rule screen body, this solves major part
The elimination of LED display twilight sunset phenomenon, and the Processing for removing of the screen body twilight sunset phenomenon of some special distributions is by this method
It can not be fully solved, it is also necessary to carry out other processing, just can guarantee that the elimination of twilight sunset phenomenon, improve display effect.
Control for the screen body of such special distribution at present is shown mainly controls line feed to count with data recombination and then again
The method of display realizes, using 16 channels drive chips and to use the 13*13 resolution ratio of two groups of data syn-chronization drive controls
Exemplified by the screen body of size, because its distribution is irregular, first group of data carries out the scanning display of 6 rows, and second group of data carries out 7 rows and swept
Retouch display；During data recombination, original 13*13 view data is used according to its passage according to screen body parameter first
Situation matching is 16*13 view data, and shown in Figure 1, invalid passage is black region in Fig. 1, now non-valid channel
Full 0 data are filled, it is achieved thereby that the matching of data channel；Then conventional image packet displacement display is carried out, lights display
During, after current one scan line data feeding finishes and produces latch signal, carried out during lower one scan line is sent into data
Lighting operation, so when second group of data carries out the 7th scan line lighting operation, first group of the 7th scan line does not have to display, so
It is practically without connecting LED when row selects signal chooses 7 scan line, now the scan line does not send data without showing to lead to
Crossing such method can realize that the normal of screen body of such special distribution is lighted.
However, the shortcomings that control method of the prior art is when second group of data carries out the 7th row lighting operation, and the
One group of the 7th row should not show, but due to shielding the construction reason of body, by taking the screen body that in Fig. 28 sweep as an example, one group of number
It can be shared according to passage for 8 row LEDs, and 6 rows share before first group of data of the prior art supply, and it is effective to light control signal
Control is lighted to be full frame, the data so the 7th row for working as not connected LED is not bothered to see me out, when carrying out the row lighting operation, screen body driving
The passage of chip is closed, and is entered horizontal blanking electric discharge after being lighted due to LED again and be may require that the regular hour, can now suppress lastrow
LED discharge process, cause lastrow the twilight sunset phenomenons such as bright spot occur, have impact on the display effect of display screen.
The content of the invention
Therefore, to overcome defect present in prior art and deficiency, the present invention proposes a kind of LED display drive control
Method and a kind of LED display drive dynamic control device.
Specifically, a kind of LED display drive control method that the embodiment of the present invention proposes, including step：Receive original
View data, wherein the resolution sizes of the raw image data are M*N, and M, N are positive integer；According to screen body configuration parameter
View data is reflected after extracting channel is carried out to the raw image data and extracts scan-line data filling processing and generates processing
Penetrate storage address in memory；And digital independent is carried out to export picture number after the processing according to the storage address
According to and be divided into multiple data group synchronization drive control target screen bodies, wherein the resolution sizes of view data are P* after the processing
Q, P are the positive integer more than M and are the integral multiple of the port number of the LED drive chip of the target screen body, and Q is more than N just
Integer and for the multiple data group the number of scanning lines in maximum scan line number integral multiple.
In one embodiment of the invention, the institute after the processing in view data in addition to the raw image data
The storage address for having filling data points to the same address in the memory.
In one embodiment of the invention, the institute after the processing in view data in addition to the raw image data
The storage address for having filling data points to the different address in the memory.
In one embodiment of the invention, each arbitrary data of filling data between full 0 to complete 1.
In one embodiment of the invention, each filling data is represented with 8bit.
In addition, a kind of LED display drive dynamic control device that the embodiment of the present invention proposes, system is shown applied to a kind of LED
The LED display control cards of system.The LED display drive dynamic control device includes：Data reception module, for receiving original image
Data, wherein the resolution sizes of the raw image data are M*N, and M, N are positive integer；Data fill processing module, use
According to screen body configuration parameter is to raw image data progress extracting channel and extraction scan-line data filling handles and life
The storage address of view data mapping in memory after into processing；And display output module, for according to the storage
Location carries out digital independent to export view data after the processing and be divided into multiple data group synchronization drive control target screen bodies, its
Described in handle after the resolution sizes of view data be P*Q, P is the positive integer more than M and is the LED drives of the target screen body
The integral multiple of the port number of dynamic chip, Q be the positive integer more than N and be the multiple data group the number of scanning lines in maximum sweep
Retouch the integral multiple of line number.
In one embodiment of the invention, in the LED display drive dynamic control device, picture number after the processing
The storage address of all filling data in addition to the raw image data is pointed to same in the memory
Individual address.
In one embodiment of the invention, in the LED display drive dynamic control device, picture number after the processing
The storage address and extraction scan line filler of extracting channel filling data in addition to the raw image data
According to the storage address be respectively directed to different address in the memory.
In one embodiment of the invention, in the LED display drive dynamic control device, each filling data is
Full 0 is to the arbitrary data between complete 1.
In one embodiment of the invention, the LED display control cards are the reception card for connecting the target screen body.
From the foregoing, it will be observed that the embodiment of the present invention is by the extracting channel of the screen body being for example randomly distributed to target screen body and takes out
Take scan line to carry out data filling matching, while ensure that data correctness, effectively prevent the appearance of interference data, so as to
The purpose for eliminating twilight sunset phenomenon is realized, improves display effect.
By the detailed description below with reference to accompanying drawing, other side of the invention and feature become obvious.But it should know
Road, the accompanying drawing is only the purpose design explained, not as the restriction of the scope of the present invention.It is it should also be noted that unless another
Point out outside, it is not necessary to which scale accompanying drawing, they only try hard to conceptually illustrate structure and flow described herein.
Brief description of the drawings
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Fig. 1 fills handling principle schematic diagram for a kind of data of the prior art.
Fig. 2 is of the prior art a kind of 8 structural representations for sweeping screen body.
Fig. 3 is a kind of extracting channel of the embodiment of the present invention and extracts scan-line data filling handling principle schematic diagram.
Fig. 4 is a kind of timing diagram of multiple data group synchronization drive controls of the embodiment of the present invention.
Fig. 5 is a kind of module diagram of LED display drive dynamic control device of the embodiment of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
In LED display system, twilight sunset phenomenon can seriously affect the display effect of LED display, greatly reduce use
The experience at family, the following embodiments of the present invention propose a kind of LED display drive control method, and it is that extracting channel and extraction are swept
Traveling row data filling matching is retouched to reach the purpose of elimination twilight sunset, so as to improve the display effect of LED display.
Specifically, the LED display drive control method that the embodiment of the present invention proposes, e.g. it is implemented in LED displays system
The LED display control cards of system are for example received in card, including step：
I) raw image data is received；
Ii extracting channel) is carried out to the raw image data according to screen body configuration parameter and extracts scan-line data filling
Handle and generate the storage address of view data mapping in memory after processing；And
Iii digital independent) is carried out according to the storage address and is divided into multiple data to export view data after the processing
The synchronous drive control target screen body of group, such as image data shift after processing is output to LED display and view data is entered
Row latch, enter a new line, lighting to realize the normal display of LED display, with this come realize the twilight sunset of LED display eliminate, raising
The display quality of LED display system.
For ease of understanding the present invention, below with two groups of data syn-chronization drive controls of 16 channels drive chips of use and use
It is described in detail exemplified by the screen body of 13*13 resolution sizes：
For eliminate conventional method caused by twilight sunset phenomenon, it is necessary to preparation be obtain LED display screen body configuration
Parameter, and shield body configuration parameter can be by carrying out test acquisition to LED display.Concretely：
In journey of the intelligence with screen software SmartLCT with such as Xi'an Novastar Electronic Technology Co., Ltd.'s exploitation of screen software
After sequence enters test pattern, the first step needs to fill in the essential information of LED display, such as module chip information (including chip-count
According to type, chip title etc.), module information (including screen body resolution ratio, row decoding mode, data group number, data group band carry size
Deng), the information such as cascade direction；Second step first exports a width test image, judges OE (display is enabled) polarity by whetheing there is display,
Second step is can skip for have determined that OE polarity；3rd step opens first group of data channel difference output red, green, blueness
Image, or even virtual red or black image, shown by the corresponding color for shielding body lamp plate to determine Data Color output arrangement；
4th step opens the complete white picture of first group of data channel output, shows that line number judges first group of data tape carrier by shielding body lamp plate
The number of scanning lines, so that it is determined that two groups of data respectively carry the number of scanning lines of load, then open first group of data channel output first and sweep
Retouch row data and show complete white picture, by showing that columns judges the band loading point number of screen body first group of scan line of data first of lamp plate；
5th step can generate the cabling table of a corresponding points size according to parameter above, and then program can the one point output of a point
Carry out described point to show, the driving chip passage for now judging screen body according to described point information exports situation and cabling table, completes this step
After rapid, it is possible to obtain screen body configuration parameter corresponding to LED display.Wherein, the position determination mode for extracting scan line is：
To the band load line number information of each data group, i.e., after the number of scanning lines that each data group band carries, if two groups of data scanning line numbers
If mismatch, configured, matched somebody with somebody using maximum scan line number in two data groups as screen swept-volume line number in cabling table described point
After the completion of putting, the horizontal line of a progressive scan is made a call to test pictures, which horizontal line not to have which display can determine whether at by observing
A line is the scan line (being also to extract scan line) being extracted；Such as shown in Fig. 3 and extract the scan line of scanning behavior the 7th, it is real
In the application of border, it can be extracted according to the annexation difference of LED point with the output pin of row decoding chip any in preceding 7 row
One scan line.
And the position determination mode of extracting channel is：When entering the drafting of walking line table, program can produce the picture shown point by point
Face, now situation can be shown by screen body lamp plate to judge which passage of LED drive chip can normally be shown, which passage quilt
Extract without showing, also as extracting channel.
Hold it is above-mentioned, get comprising the port number of LED drive chip, extracting channel position, data group the number of scanning lines
And after extracting the screen body configuration parameters of information such as scan line position, screen body configuration parameter can be prestored to LED and shown
In memory in control card, then extracting channel and extraction are scanned for raw image data by LED display control cards and advanced
The view data that the filling of row data is handled and exported after processing is divided into two data group synchronization drive control LED displays and shown
Show to realize that twilight sunset eliminates.Specifically,
The raw image data of 13*13 resolution sizes is filled by expansion, original image according to screen body configuration parameter
Data storage in memory, with port number (such as 16) integral multiple of LED drive chip and the maximum data group number of scanning lines (example
As 7) carried out Data Matching for reference information, so it is 16*14 that raw image data 13*13, which is filled expansion processing, in this citing
View data, exemplified by shown in Fig. 3, while to view data generation mapping storage address in memory after processing, its
The data area (i.e. black region in Fig. 3) of middle extracting channel (or non-valid channel, unused channel) and extraction scan line can
According to screen body construction carry out corresponding filling full 0 data between complete 1 arbitrary data (typically, R, G of full-color LED display screen,
B data represents that the scope of the arbitrary data between corresponding full 0 data to complete 1 is [0,255] with 8bit respectively)；Specific implementation
Method for view data is read out when, when it is Fig. 3 filled black regional address to determine storage address, corresponding data
Reading address can be modified and is directed to one piece of single data block, and the data block can store full 0 to the arbitrary disposition between complete 1
Data, therefore can realize that the view data that filled black regional address is read is the configuration data, now just have been carried out
The scanning number of the Data Matching of data channel and multiple data groups is synchronous, displacement transmission and point followed by view data
Bright control, due to have matched the view data of the row of the first data group the 7th, so when carrying out lighting display, it is only necessary to carry out phase
The display control answered, corresponding sequential is as shown in figure 4, being so achieved that in two data groups while carrying out the 7th row
When lighting, first group latched the configuration data pre-set, when data channel is opened, by corresponding thus according to screen body construction
The configuration data of setting, by taking Fig. 2 institutes display screen body construction as an example, now configuration data is for example set to complete 1 data, meeting after passage is opened
Low level is exported, so without interference with the discharge process of LED point in respective channel, the effect for eliminating twilight sunset phenomenon has been reached with this
Fruit.
It is furthermore (namely black in Fig. 3 for all filling data in view data after processing in addition to raw image data
The extracting channel in color region and extract view data corresponding to scan line) storage address, in order to save the storage of memory sky
Between, it can be all directed to the same address in memory, and in this case, all filling data are identical data；When
So, the storage address of the storage address of extracting channel filling data and extraction scan line filling data can also be respectively directed to store
The different address of device, in this case, each extracting channel filling data are identical data, each extraction scan line filler
According to being also identical data；Even, the storage address of each filling data is respectively directed to the different address of memory, simply so
If account for that memory-aided memory space is relatively large, but still be a kind of feasible mode.
Referring to Fig. 5, it is a kind of LED display drive dynamic control device that the embodiment of the present invention proposes, its be suitable for the application of in
A kind of LED display control cards of LED display system for example receive card (it connects LED screen body).Specifically, the LED of the present embodiment
Display screen drive dynamic control device is for example realized that it is wrapped by the software for running on the programming device (such as FPGA) for receiving card
Include：Data reception module 51, data filling processing module 53 and display output module 55.
Wherein, data reception module 51 is used to receive raw image data, wherein the resolution ratio of the raw image data
Size is M*N, and M, N are positive integer.Data filling processing module 53 is used for according to screen body configuration parameter to the original image
Data carry out view data after extracting channel and extraction scan-line data filling handle and generate processing and mapped in memory
Storage address.Display output module 55 is used to carry out digital independent according to the storage address to export picture number after the processing
According to being divided into multiple data group synchronization drive control target screen bodies, wherein the resolution sizes of view data are P*Q after the processing,
P is the positive integer more than M and is the integral multiple of the port number of the LED drive chip of the target screen body, and Q is just whole more than N
The integral multiple of maximum scan line number in the number of scanning lines that is several and being the multiple data group.
As for data reception module 51, the tool of data filling processing module 53 and the grade modules of display output module 55
Body function details refers to the foregoing explanation for being relevant to LED display drive control method, will not be repeated here.
In summary, the embodiment of the present invention by the extracting channel of the screen body being for example randomly distributed to target screen body and is taken out
Take scan line to carry out data filling matching, while ensure that data correctness, effectively prevent the appearance of interference data, so as to
The purpose for eliminating twilight sunset phenomenon is realized, improves display effect.Extracting channel and extract scan line carry out data filling
Match somebody with somebody, while ensure that data correctness, effectively prevent the appearance of interference data, it is achieved thereby that eliminating the mesh of twilight sunset phenomenon
, improve display effect.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the technical spirit pair according to the present invention without departing from technical solution of the present invention content
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within technical solution of the present invention.
Claims (8)
- A kind of 1. LED display drive control method, it is characterised in that including step：Raw image data is received, wherein the resolution sizes of the raw image data are M*N, and M, N are positive integer；Extracting channel is carried out to the raw image data according to screen body configuration parameter and extracts scan-line data filling processing simultaneously The storage address of view data mapping in memory after generation processing；AndDigital independent is carried out according to the storage address to export after the processing view data and to be divided into multiple data groups synchronous Drive control target screen body, wherein the resolution sizes of view data are P*Q after the processing, P is the positive integer more than M and is The integral multiple of the port number of the LED drive chip of the target screen body, Q are the positive integer more than N and are the multiple data group The number of scanning lines in maximum scan line number integral multiple；Filled out described in each in all filling data after the processing in view data in addition to the raw image data Make up the number according to the arbitrary data between full 0 to complete 1.
- 2. LED display drive control method as claimed in claim 1, it is characterised in that the institute of all filling data State the same address in the storage address sensing memory.
- 3. LED display drive control method as claimed in claim 1, it is characterised in that the institute of all filling data State the different address in the storage address sensing memory.
- 4. LED display drive control method as claimed in claim 2 or claim 3, it is characterised in that each filling data is used 8bit is represented.
- 5. a kind of LED display drive dynamic control device, applied to a kind of LED display control cards of LED display system, its feature exists In the LED display drive dynamic control device includes：Data reception module, for receiving raw image data, wherein the resolution sizes of the raw image data are M*N, And M, N are positive integer；Data fill processing module, for carrying out extracting channel and extraction to the raw image data according to screen body configuration parameter Scan-line data filling handles and generates the storage address of view data mapping in memory after processing；AndDisplay output module, for digital independent is carried out according to the storage address with export after the processing view data and point Into multiple data group synchronization drive control target screen bodies, wherein the resolution sizes of view data are P*Q after the processing, P is Positive integer more than M and for the target screen body LED drive chip port number integral multiple, Q be the positive integer more than N and For the integral multiple of the maximum scan line number in the number of scanning lines of the multiple data group；Filled out described in each in all filling data after the processing in view data in addition to the raw image data Make up the number according to the arbitrary data between full 0 to complete 1.
- 6. LED display drive dynamic control device as claimed in claim 5, it is characterised in that the institute of all filling data State the same address in the storage address sensing memory.
- 7. LED display drive dynamic control device as claimed in claim 5, it is characterised in that after the processing in view data The storage address and extraction scan line of extracting channel filling data in addition to the raw image data fill data The storage address is respectively directed to the different address in the memory.
- 8. LED display drive dynamic control device as claimed in claim 5, it is characterised in that the LED display control cards are company Connect the reception card of the target screen body.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107452306B (en) * | 2017-08-17 | 2021-10-01 | 京东方科技集团股份有限公司 | Tool jig for detecting display panel and detection method thereof |
| CN110459180B (en) * | 2018-05-07 | 2022-04-22 | 京东方科技集团股份有限公司 | Drive control method and device and display device |
| CN108711394A (en) * | 2018-05-24 | 2018-10-26 | 长春希达电子技术有限公司 | The number of scanning lines or the unmatched LED display scanning and display method of columns |
| CN109410829B (en) * | 2018-12-19 | 2020-09-15 | 大连集思特科技有限公司 | Control system of special-shaped flexible LED display screen |
| CN112382230A (en) * | 2020-10-19 | 2021-02-19 | 深圳匠明科技有限公司 | LED driving circuit, data processing method, device and system and display equipment |
| CN112394278A (en) * | 2020-11-06 | 2021-02-23 | 深圳Tcl数字技术有限公司 | Lamp panel wiring information generation method, test terminal and readable storage medium |
| CN114783366B (en) * | 2022-04-29 | 2023-11-28 | 卡莱特云科技股份有限公司 | Display method and device based on special-shaped module and LED display screen |
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Address after: 710075 DEF101, Zero One Square, Xi'an Software Park, No. 72 Zhangbajie Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Nova Nebula Technology Co., Ltd. Address before: 710075 Qinfengge D District 401, Xi'an Software Park, 68 Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xian Novastar Electronic Technology Co., Ltd. |