CN103680402A - An asynchronous full color LED display control system based on an LEON3 soft core CPU - Google Patents
An asynchronous full color LED display control system based on an LEON3 soft core CPU Download PDFInfo
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- CN103680402A CN103680402A CN201310411143.7A CN201310411143A CN103680402A CN 103680402 A CN103680402 A CN 103680402A CN 201310411143 A CN201310411143 A CN 201310411143A CN 103680402 A CN103680402 A CN 103680402A
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Abstract
The invention discloses an asynchronous full color LED display control system based on an LEON3 soft core CPU. The full color LED display control system based on the LEON3 soft core CPU comprises an embedded-type unit, a logic control unit and an LED display screen. The embedded-type unit is connected to an input end of the logic control unit. An output end of the logic control unit is connected with the LED display screen. The LEON3 soft core CPU, and a FlASH storage, an image data acquisition module and a DDR2 first storage which are respectively connected with the LEON3 soft core CPU are arranged inside the embedded-type unit. The DDR2 first storage is in electrical connection with the image data acquisition module. A multi-image area splicing control module, an image data processing module, an LED scanning driving module and a DDR2 second storage are arranged inside the logic control unit. The multi-image area splicing control module is separately in electrical connection with the DDR2 second storage and the image data processing module. The DDR2 second storage is separately in electrical connection with the LED scanning driving module and the image data processing module. According to the invention, the LEON3 soft core CPU is adopted as a processor, and the DDR2 first storage and the DDR2 second storage are respectively arranged in the embedded-type unit and the logic control unit, so that asynchronous full color LED display control system based on the LEON3 soft core CPU has characteristics of low cost and high performance.
Description
Technical field
The present invention relates to a kind of LED display control technology, relate in particular to a kind of asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU.
Background technology
Along with the development of LED display technology, particularly lintel screen is in the application in the places such as shop, bank, and user is more and more higher to the function of LED display, cost requirement.Existing low-cost asynchronous display control system mostly is the display control program without gray scale, and has the display control program of gray scale mostly to be embedded system output HDMI or LVDS signal scans demonstration to FPGA, and cost is high, complex structure.
In the patent No., be 201010125460, patent name is to disclose a kind of asynchronous control system in the patent of invention of the LED giant-screen asynchronous control system > > of < < based on the soft nuclear technology of Microblaze, its principal feature is to use 2 Microblaze soft nucleus CPUs and scan logic module to share blocks of outer DDR2 storer, the method is owing to adopting internal memory sharing mode, the memory access ability of real-time high bandwidth cannot be provided for logic module, therefore full-color in processing, larger with the long-pending display image data aspect poor effect of section.Meanwhile, the impact that is subject to FPGA platform based on the soft nuclear technology of Microblaze that this system adopts causes its portability lower, is not easy cost to carry out good control.
Summary of the invention
The object of this invention is to provide a kind of low cost, low-power consumption, the high performance asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU.
For achieving the above object, a kind of asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU of the present invention, it comprises embedded unit, logic control element and LED display, the input end of embedded unit andlogic control unit connects, and the output terminal of logic control element is connected with LED display; In embedded unit, be provided with LEON3 soft nucleus CPU and the FLASH storer being electrically connected to LEON3 soft nucleus CPU respectively, image data acquiring module and DDR2 first memory, another output terminal of DDR2 first memory is connected with image data acquiring module; In logic control element, be provided with many image-region splicing control modules, image data processing module, LED turntable driving module and DDR2 second memory, many image-region splicing control modules are connected with the input end of DDR2 second memory, the input end of image data processing module respectively, the output terminal of DDR2 second memory is connected with the input end of LED turntable driving module, and DDR2 second memory is electrically connected to image data processing module.
Described LEON3 soft nucleus CPU is electrically connected to FLASH storer, image data acquiring module, DDR2 first memory respectively by ahb bus.
Described and many image-region splicing control modules are electrically connected to image data processing module, DDR2 second memory respectively by Wishbone bus.
Described DDR2 second memory is electrically connected to image data processing module, LED turntable driving module respectively by Wishbone bus.
The output terminal of described LED turntable driving module is connected with LED display.
Many image-region splicing control modules of described logic control element are electrically connected to the image data acquiring module of embedded unit.
The invention provides the described asynchronous all-colour LED based on LEON3 soft nucleus CPU and show the method for controlling, the method comprises the following steps:
1) by territory, picture portion to be played, and image to be played is deposited in FLASH storer;
2) LEON3 soft nucleus CPU creates the management thread of respective numbers according to the image-region quantity in playlist, current thread loads image to be played by FLASH storer, LEON3 soft nucleus CPU is view data by image decoding to be played, then view data is write in DDR2 first memory;
3) after image decoding to be played, LEON3 soft nucleus CPU carries out special effect processing to decoded view data, in special effect processing process, LEON3 soft nucleus CPU first calculates the permutation and combination of decoded view data in different images region according to the special efficacy algorithm of setting in playlist, again the order of permutation and combination is converted to and reads instruction, simultaneously, to needing to fill the region of black in image, LEON3 soft nucleus CPU directly generates black pixel point and fills instruction, then black pixel point is filled to instruction and read instruction to be sent to image data acquiring module;
4) image data acquiring module receives and reads after instruction and black pixel point filling instruction, according to reading instruction, by the order of permutation and combination, from DDR2 first memory, read the view data in different images region, the described view data reading out by permutation and combination order is the view data after special effect processing, and fill the instruction corresponding black picture element dot information of generation automatically according to black pixel point, then the view data after special effect processing and black picture element dot information are sent to many image-regions splicing control modules;
5) many image-regions splicing control modules according to different images region the configuration parameter in whole LED screen, the black picture element dot information that image data acquiring module is sent writes in DDR2 second memory together with the view data after special effect processing, write after last the pixel information in last region, the view data of whole LED screen is all stored in DDR2 second memory, and many image-region splicing control modules send a signal to image data processing module;
6) image data processing module is received after signal, according to the configuration parameter of image after special effect processing, from DDR2 second memory, call over the view data of whole LED screen, and the image information piecemeal of different gray shade scales is deposited in DDR2 second memory after processing through Gamma correction, pointwise correction;
7) LED turntable driving module is according to real-time the showing from reading the image information of the whole LED screen after step 6) is processed DDR2 second memory and exporting LED display to of predefined scanning refreshing frequency.
In the present invention, port of DDR2 first memory is electrically connected to LEON3 soft nucleus CPU, another output terminal is connected with image data acquiring module, when image data acquiring module reads the view data in DDR2 first memory, without taking bus, in this process, other modules still can normally be used bus.
In described step 3), LEON3 soft nucleus CPU be only responsible for to generate black pixel point and fills instruction and read instruction, DDR2 first memory is not carried out to read-write operation, has greatly reduced in image special effect processing procedure to the taking of ahb bus the work efficiency of raising system.
In described step 4), image data acquiring module is filled instruction according to the black pixel point receiving can generate corresponding black picture element dot information automatically, unlike LED asynchronous display control system equally to from storer, read out black picture element dot information, improved the speed of data transmission.
The present invention adopts low cost, high performance LEON3 soft nucleus CPU is as flush bonding processor, DDR2 first memory is set in embedded unit, DDR2 second memory is set in logic control element, DDR2 storer of each units shared compared to existing technology, the present invention can guarantee embedded unit and the performance requirement of logic control element to storer, make logic control element to DDR2 second memory, to carry out read-write operation in real time, can process full-color, larger with the long-pending LED display view data of section, simultaneously, reduced the utilization rate of system to bus in image special effect processing procedure, improve the processing of view data, transfer rate, reduced the cost of control system.In a word, whole LED display control program has the feature of low-power consumption, low cost, high-performance and high reliability.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail:
Fig. 1 is the general frame of system of the present invention;
Fig. 2 is the concrete block diagram of system of the present invention.
Embodiment
As shown in Figure 1 to Figure 2, a kind of asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU of the present invention, it comprises embedded unit 1, logic control element 2 and LED display 3, the input end of embedded unit 1 andlogic control unit 2 connects, and the output terminal of logic control element 2 is connected with LED display 3; In embedded Unit 1, be provided with LEON3 soft nucleus CPU 11 and the FLASH storer 12 being electrically connected to LEON3 soft nucleus CPU 11 respectively, image data acquiring module 13 and DDR2 first memory 14, DDR2 first memory 14 another output terminals are connected with image data acquiring module 13; In logic control element 2, be provided with many image-region splicing control modules 21, image data processing module 22, LED turntable driving module 23 and DDR2 second memory 24, many image-region splicing control modules 21 are connected with the input end of DDR2 second memory 24, the input end of image data processing module 22 respectively, the output terminal of DDR2 second memory 24 is connected with the input end of LED turntable driving module 23, and DDR2 second memory 24 is electrically connected to image data processing module 22.
Described LEON3 soft nucleus CPU 11 is electrically connected to FLASH storer 12, image data acquiring module 13, DDR2 first memory 14 respectively by ahb bus.
Described and many image-region splicing control modules 21 are electrically connected to image data processing module 22, DDR2 second memory 24 respectively by Wishbone bus.
Described DDR2 second memory 24 is electrically connected to image data processing module 22, LED turntable driving module 23 respectively by Wishbone bus.
The output terminal of described LED turntable driving module 23 is connected with LED display 3.
Many image-region splicing control modules 21 of described logic control element 2 are electrically connected to the image data acquiring module 13 of embedded unit 1.
The invention provides the described asynchronous all-colour LED based on LEON3 soft nucleus CPU and show the method for controlling, the method comprises the following steps:
1) by territory, picture portion to be played, and image to be played is deposited in FLASH storer 12;
2) LEON3 soft nucleus CPU 11 creates the management thread of respective numbers according to the image-region quantity in playlist, current thread loads image to be played by FLASH storer 12, LEON3 soft nucleus CPU 11 is view data by image decoding to be played, then view data is write in DDR2 first memory 14;
3) after image decoding to be played, 11 pairs of decoded view data of LEON3 soft nucleus CPU are carried out special effect processing, in special effect processing process, LEON3 soft nucleus CPU 11 first calculates the permutation and combination of decoded view data in different images region according to the special efficacy algorithm of setting in playlist, again the order of permutation and combination is converted to and reads instruction, simultaneously, to needing to fill the region of black in image, LEON3 soft nucleus CPU 11 directly generates black pixel point and fills instruction, then black pixel point is filled to instruction and read instruction to be sent to image data acquiring module 13;
4) image data acquiring module 13 receives and reads after instruction and black pixel point filling instruction, according to reading instruction, by the order of permutation and combination, from DDR2 first memory 14, read the view data in different images region, the described view data reading out by permutation and combination order is the view data after special effect processing, and fill the instruction corresponding black picture element dot information of generation automatically according to black pixel point, then the view data after special effect processing and black picture element dot information are sent to many image-regions splicing control modules 21;
5) many image-regions splicing control modules 21 according to different images region the configuration parameter in whole LED screen, the black picture element dot information that image data acquiring module 13 is sent writes in DDR2 second memory 24 together with the view data after special effect processing, write after last the pixel information in last region, the view data of whole LED screen is all stored in DDR2 second memory 24, and many image-region splicing control modules 21 send a signal to image data processing module 22;
6) image data processing module 22 is received after signal, according to the configuration parameter of image after special effect processing, from DDR2 second memory 24, call over the view data of whole LED screen, and the image information piecemeal of different gray shade scales is deposited in DDR2 second memory 24 after processing through Gamma correction, pointwise correction;
7) LED turntable driving module 23 is according to real-time the showing from reading the image information of the whole LED screen after step 6) is processed DDR2 second memory 24 and exporting LED display 3 to of predefined scanning refreshing frequency.
Claims (7)
1. the asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU, it is characterized in that: it comprises embedded unit, logic control element and LED display, the input end of embedded unit andlogic control unit connects, and the output terminal of logic control element is connected with LED display; In embedded unit, be provided with LEON3 soft nucleus CPU and the FLASH storer being electrically connected to LEON3 soft nucleus CPU respectively, image data acquiring module and DDR2 first memory, another output terminal of DDR2 first memory is connected with image data acquiring module; In logic control element, be provided with many image-region splicing control modules, image data processing module, LED turntable driving module and DDR2 second memory, many image-region splicing control modules are connected with the input end of DDR2 second memory, the input end of image data processing module respectively, the output terminal of DDR2 second memory is connected with the input end of LED turntable driving module, and DDR2 second memory is electrically connected to image data processing module.
2. the asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU according to claim 1, is characterized in that: described LEON3 soft nucleus CPU is electrically connected to FLASH storer, image data acquiring module, DDR2 first memory respectively by ahb bus.
3. the asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU according to claim 1, is characterized in that: described and many image-region splicing control modules are electrically connected to image data processing module, DDR2 second memory respectively by Wishbone bus.
4. the asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU according to claim 1, is characterized in that: described DDR2 second memory is electrically connected to image data processing module, LED turntable driving module respectively by Wishbone bus.
5. the asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU according to claim 1, is characterized in that: the output terminal of described LED turntable driving module is connected with LED display.
6. the asynchronous all-colour LED display control program based on LEON3 soft nucleus CPU claimed in claim 1, is characterized in that: many image-region splicing control modules of described logic control element are electrically connected to the image data acquiring module of embedded unit.
7. the asynchronous all-colour LED based on LEON3 soft nucleus CPU as described in one of claim 1-6 shows the method for controlling, and it is characterized in that: the method comprises the following steps:
1) by territory, picture portion to be played, and image to be played is deposited in FLASH storer;
2) LEON3 soft nucleus CPU creates the management thread of respective numbers according to the image-region quantity in playlist, current thread loads image to be played by FLASH storer, LEON3 soft nucleus CPU is view data by image decoding to be played, then view data is write in DDR2 first memory;
3) after image decoding to be played, LEON3 soft nucleus CPU carries out special effect processing to decoded view data, in special effect processing process, LEON3 soft nucleus CPU first calculates the permutation and combination of decoded view data in different images region according to the special efficacy algorithm of setting in playlist, again the order of permutation and combination is converted to and reads instruction, simultaneously, to needing to fill the region of black in image, LEON3 soft nucleus CPU directly generates black pixel point and fills instruction, then black pixel point is filled to instruction and read instruction to be sent to image data acquiring module;
4) image data acquiring module receives and reads after instruction and black pixel point filling instruction, according to reading instruction, by the order of permutation and combination, from DDR2 first memory, read the view data in different images region, the described view data reading out by permutation and combination order is the view data after special effect processing, and fill the instruction corresponding black picture element dot information of generation automatically according to black pixel point, then the view data after special effect processing and black picture element dot information are sent to many image-regions splicing control modules;
5) many image-regions splicing control modules according to different images region the configuration parameter in whole LED screen, the black picture element dot information that image data acquiring module is sent writes in DDR2 second memory together with the view data after special effect processing, write after last the pixel information in last region, the view data of whole LED screen is all stored in DDR2 second memory, and many image-region splicing control modules send a signal to image data processing module;
6) image data processing module is received after signal, according to the configuration parameter of image after special effect processing, from DDR2 second memory, call over the view data of whole LED screen, and the image information piecemeal of different gray shade scales is deposited in DDR2 second memory after processing through Gamma correction, pointwise correction;
7) LED turntable driving module is according to real-time the showing from reading the image information of the whole LED screen after step 6) is processed DDR2 second memory and exporting LED display to of predefined scanning refreshing frequency.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743515A (en) * | 2018-11-27 | 2019-05-10 | 中国船舶重工集团公司第七0九研究所 | A kind of asynchronous video fusion overlapping system and method based on soft core platform |
| WO2021016850A1 (en) * | 2019-07-30 | 2021-02-04 | 西安诺瓦星云科技股份有限公司 | Line splitter, led display system, and display screen configuration method and device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003308061A (en) * | 2002-04-15 | 2003-10-31 | Sanyo Electric Co Ltd | Picture display device |
| KR100513140B1 (en) * | 2005-06-20 | 2005-09-07 | 주식회사 누리플랜 | Method and apparatus for controlling full color illumination of led |
| CN101515436A (en) * | 2008-12-25 | 2009-08-26 | 西安青松科技股份有限公司 | Embedded LED display screen control system |
| CN102194403A (en) * | 2010-03-17 | 2011-09-21 | 上海仰邦软件科技有限公司 | Microblaze soft core technology-based LED (Light Emitting Diode) large-screen asynchronous control system |
| CN202102691U (en) * | 2011-06-13 | 2012-01-04 | 南京德普达电子技术有限公司 | Embedded LED display screen full-color synchronization playing apparatus |
| CN202502713U (en) * | 2012-01-12 | 2012-10-24 | 上海灵信信息科技有限公司 | LED display screen controller based on SOPC |
| CN102903334A (en) * | 2012-11-13 | 2013-01-30 | 河南工业大学 | Full color LED (Light-Emitting Diode) display screen |
| CN202905112U (en) * | 2012-08-03 | 2013-04-24 | 晋江市晶鑫电子技术有限公司 | Light emitting diode (LED) full-color display screen |
| CN103092548A (en) * | 2011-11-01 | 2013-05-08 | 吕晓威 | LED display screen controller based on muC/OS2II |
-
2013
- 2013-09-11 CN CN201310411143.7A patent/CN103680402B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003308061A (en) * | 2002-04-15 | 2003-10-31 | Sanyo Electric Co Ltd | Picture display device |
| KR100513140B1 (en) * | 2005-06-20 | 2005-09-07 | 주식회사 누리플랜 | Method and apparatus for controlling full color illumination of led |
| CN101515436A (en) * | 2008-12-25 | 2009-08-26 | 西安青松科技股份有限公司 | Embedded LED display screen control system |
| CN102194403A (en) * | 2010-03-17 | 2011-09-21 | 上海仰邦软件科技有限公司 | Microblaze soft core technology-based LED (Light Emitting Diode) large-screen asynchronous control system |
| CN202102691U (en) * | 2011-06-13 | 2012-01-04 | 南京德普达电子技术有限公司 | Embedded LED display screen full-color synchronization playing apparatus |
| CN103092548A (en) * | 2011-11-01 | 2013-05-08 | 吕晓威 | LED display screen controller based on muC/OS2II |
| CN202502713U (en) * | 2012-01-12 | 2012-10-24 | 上海灵信信息科技有限公司 | LED display screen controller based on SOPC |
| CN202905112U (en) * | 2012-08-03 | 2013-04-24 | 晋江市晶鑫电子技术有限公司 | Light emitting diode (LED) full-color display screen |
| CN102903334A (en) * | 2012-11-13 | 2013-01-30 | 河南工业大学 | Full color LED (Light-Emitting Diode) display screen |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743515A (en) * | 2018-11-27 | 2019-05-10 | 中国船舶重工集团公司第七0九研究所 | A kind of asynchronous video fusion overlapping system and method based on soft core platform |
| CN109743515B (en) * | 2018-11-27 | 2021-09-03 | 中国船舶重工集团公司第七0九研究所 | Asynchronous video fusion and superposition system and method based on soft core platform |
| WO2021016850A1 (en) * | 2019-07-30 | 2021-02-04 | 西安诺瓦星云科技股份有限公司 | Line splitter, led display system, and display screen configuration method and device |
| US11955056B2 (en) | 2019-07-30 | 2024-04-09 | Xi'an Novastar Tech Co., Ltd. | Splitter, LED display system, method for configuring display screen |
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