CN202363045U - LED (light-emitting diode) display screen control system - Google Patents
LED (light-emitting diode) display screen control system Download PDFInfo
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- CN202363045U CN202363045U CN201120428576XU CN201120428576U CN202363045U CN 202363045 U CN202363045 U CN 202363045U CN 201120428576X U CN201120428576X U CN 201120428576XU CN 201120428576 U CN201120428576 U CN 201120428576U CN 202363045 U CN202363045 U CN 202363045U
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Abstract
The utility model provides an LED (light emitting diode) display screen control system. The LED display screen control system comprises a computer, a sending card, a receiving card and an LED display screen which are connected in a communication manner, wherein a FPGA (field programmable gata array) is arranged in the sending card and the receiving card; and the FPGA integrates a refreshing control module used for controlling the refresh frequency of an LED display screen and a gamma control circuit module which efficiently adopts an optimization algorithm. The LED display screen control system provided by the utility model can realize high adjustment class of the high grey scale and brightness under that a self refresh chip is not used, and improves effective rate of the display screen.
Description
Technical field
It is the display screen of luminophor that the utility model relates to semiconductor light-emitting-diode (LED); Relate in particular to the LED display that is fit to show full-color picture; Be in particular a kind of full-color screen control system, belong to electric light source and display technique field based on the communication of the high gray shade scale kilomega network of LED.
Background technology
Lattice module or pixel unit that existing LED display utilizes light emitting diode to constitute are formed screen, are made up of LED and driving circuit, and LED device general reference light emitting diode comprises redness, blueness, luminotrons such as green.Driving circuit adopts special-purpose LED drive IC; IC accepts the data that receiving card sends, and the light on and off state of driven for emitting lights pipe is then realized the gray scale of single pixel; And then can realize that the brightness of display screen and color are greatly improved than other show tools (showing liquid crystal display etc. like CRT).
According to the principle of three primary colours, all colors all can be by red, and green, blue combination realizes, each pixel of image can use the luminotron combination of three kinds of colors to realize, controls the brightness of each LED, just can form a width of cloth colour pitcture.Because LED display is made up of many luminotrons, therefore the control of whole luminotrons needs Total tune could realize complete picture, needs a control system; Realize original data processing, Network Transmission, Flame Image Process; Rank scanning, functions such as gray-scale Control.
Existing control system principle: at first, receive video card output video data on computers, carry out data processing then, coding; Behind the coding, form data stream, data are sent in the receiving card through certain communication mode (like fixed network or wireless telecommunications); Receiving card will receive the data in generation and handle, and resolve into the accessible data of each pixel again, through chip for driving, drive each luminotron, display image.
Existing LED display control system mainly contains sends card, compositions such as receiving card.The data of computer standard DVI video card output to sends card, after the transmission card data processing, is transferred to receiving card through the dedicated Internet access line again, and receiving card carries out data processing again, and gated sweep circuit and chip for driving are come the driving LED display screen.The performance of entire display screen depends primarily on control system; In actual motion; The supporting software of meeting operation control system on the controlling computer, software can be play the file of various forms, and the order of played file; With reproduction time etc., can on LED display, show the on all four content of display frame synchronously with controlling computer.
Yet also there is following technological deficiency in LED display of the prior art:
1) the LED luminotron luminescence efficiency of LED display is still waiting to improve, and in real work, in the time of the display screen high-high brightness, luminotron is not permanent bright; During high-high brightness, in the unit interval, the accounting of the time of lighting of luminotron is referred to as efficient; Such as, display screen is when high-high brightness, and in 1 scan period, luminotron is an illuminating state in 0.8 scan period; Then efficient is 80%, and the efficient of present control system is lower than 85% basically, causes the ability of 15% LED to be wasted;
2) gray shade scale of control system is not enough, causes color of image abundant inadequately, and under low brightness levels showed, the image mosaic phenomenon was serious;
3) control system is handled the image scarce capacity, is difficult to directly handle HD video.
Summary of the invention
To the defective that exists in the above-mentioned prior art, the utility model provides a kind of transmission speed fast, and wiring is simple, and security is good, high gray shade scale, efficient height, energy-conservation LED display control system.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of LED display control system; Comprise: the computing machine that communication connects, transmission card, receiving card and LED display; It is characterized in that: FPGA (extensive logical circuit) is arranged in said transmission card and the receiving card, is integrated with the refreshing control module that is used to control said LED display refreshing frequency among the said FPGA.
Further, said FPGA also is integrated with the gray scale control circuit module that adopts optimized Algorithm efficiently.
Further, but said receiving card is provided with the sensor interface of the various external sensors of infinite expanding.
Further, also be provided with the attached processor that is used to handle sensing and control data between said sensor interface and the said FPGA.
Further, connect with the kilomega network network communication of adopting transparent protocol between said transmission card and the said receiving card.
Through adopting technique scheme, can realize following useful technique effect:
1) do not use the self-refresh chip to realize high gray shade scale;
2) height of realizing brightness is adjusted grade;
3) improve the efficient of display screen;
4) solve because the mosaic phenomenon that brightness degree causes inadequately;
5) resolution system is handled and is shown the too small problem of screen resolution.
Description of drawings
Fig. 1 is that the transmission card of the LED display control system of the utility model is formed synoptic diagram;
Fig. 2 is that the receiving card of the LED display control system of the utility model is formed synoptic diagram;
Fig. 3 is the system architecture synoptic diagram of the LED display control system of the utility model.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation.
As shown in Figure 3, to form for the structure of LED display control system, its principle of work is following:
1, computing machine is controlled the parameter setting of total system through the control data sendaisle
2, video processing module function: process computer video card output image data
3, send card FPGA, process graphical data is fed back the data processing of coming to computing machine and interface card
4, send cartoon news module: realize sending card and the direct data transmission of receiving card
5, receive cartoon and need module: realize sending card and the direct data transmission of receiving card
6, receiving card FPGA: handle to send the data that card sends over, and will send the required data of card and return to transmission and block
7, driving circuit: according to view data direct controlling and driving display screen body
In the present embodiment, the hardware of LED display control system comprises: control computer, DVI video card, DVI connecting line, RS232 connecting line, transmission card, network communication line, receiving card, drive plate and lamp plate.Wherein, the network communication line can be a netting twine as transmission medium, and optical fiber is wireless etc.; Adopt the gigabit networking communication data and, can make the more calculation resources of system saves, be used to calculate other tasks, the efficient height of system the transparent agreement of data; The efficient of system can be promoted to more than 95%, makes the luminance loss of display screen reach minimum like this, under equal conditions, and the display screen of same brightness; Because adopt native system, the luminotron working current is littler, power consumption is littler; More energy-conservation, can reach to prolong and use mission, delay the aging process; Because the complete lossless process of image is not compressed in whole process, the picture quality that guarantees to greatest extent; Transmission equipment is simple, and engineering debug is convenient.
As shown in Figure 1; Structural representation for the transmission card in the LED display control system; Send card mainly by forming, with video interface, video processing module, FPGA, the communication module of computing machine communication and be used for the communication interface with the receiving card communication with lower module and interface.Wherein, bus is connected between FPGA and program storage, the data-carrier store; Be connected with the system parameter setting interface communication through the DVI interface between FPGA and the computing machine; Also be connected with the HD video interface control module between FPGA and the video interface.
Compared with prior art, in the present embodiment, adopt more high-grade image I C and FPGA, can handle more high-resolution image, single deck tape-recorder can be handled the HD video of 1920*1080, and cascade can be handled the 3840*1080 video.
As shown in Figure 2; Structural representation for the receiving card in the LED display control system; Receiving card is mainly by forming with lower module and interface, the driving interface that is used for and sends communication interface, communication module, the FPGA that the cartoon news are connected and be used for being connected with the LED display driving.Wherein, bus is connected between FPGA and program storage, the data-carrier store; FPGA also is connected with various sensor communications through attached processor and sensor interface.
Compared with prior art, in the present embodiment, FPGA can realize unlimited expanding function through attached processor and sensor interface, can expand to connect various sensors.
In the present embodiment; Also be integrated with the refresh function modular circuit among the FPGA; Through adopting this FPGA and efficient optimization algorithm gray scale control circuit module thereof, under the situation that does not adopt the self-refresh chip for driving, realize 16 gray shade scales, because self-refresh function chip for driving is higher with respect to not being with the self-refresh chip cost; Abundanter, more bright-coloured at the picture color of prerequisite realization cheaply.
Claims (5)
1. LED display control system; Comprise: the computing machine that communication connects, transmission card, receiving card and LED display; It is characterized in that: FPGA is arranged in said transmission card and the receiving card, is integrated with the refreshing control module that is used to control said LED display refreshing frequency among the said FPGA.
2. LED display control system according to claim 1 is characterized in that: said FPGA also is integrated with the gray scale control circuit module that adopts optimized Algorithm efficiently.
3. LED display control system according to claim 1 is characterized in that: but said receiving card is provided with the sensor interface of the various external sensors of infinite expanding.
4. LED display control system according to claim 3 is characterized in that: also be provided with the attached processor that is used to handle sensing and control data between said sensor interface and the said FPGA.
5. according to each described LED display control system in the claim 1 to 4, it is characterized in that: connect with the kilomega network network communication of adopting transparent protocol between said transmission card and the said receiving card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120428576XU CN202363045U (en) | 2011-11-03 | 2011-11-03 | LED (light-emitting diode) display screen control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120428576XU CN202363045U (en) | 2011-11-03 | 2011-11-03 | LED (light-emitting diode) display screen control system |
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| Publication Number | Publication Date |
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| CN202363045U true CN202363045U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120428576XU Expired - Fee Related CN202363045U (en) | 2011-11-03 | 2011-11-03 | LED (light-emitting diode) display screen control system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065587A (en) * | 2012-12-28 | 2013-04-24 | 富顺光电科技股份有限公司 | Transmitting-card-free low-cost light emitting diode (LED) synchronous display controlling system |
| CN104809982A (en) * | 2015-04-30 | 2015-07-29 | 苏州承乐电子科技有限公司 | LED full-color synchronous control system |
| CN105006217A (en) * | 2015-03-25 | 2015-10-28 | 潘红兵 | High-loading-capacity asynchronous control system of LED display screen |
| CN105023540A (en) * | 2015-07-31 | 2015-11-04 | 苏州宏展信息科技有限公司 | Data transmission method of LED display screen control system |
| CN105528976A (en) * | 2016-01-29 | 2016-04-27 | 深圳中科维优科技有限公司 | Device and method for automatically measuring and calibrating gamma curve of display screen |
| CN110111730A (en) * | 2019-06-21 | 2019-08-09 | 深圳市洲明科技股份有限公司 | Display screen kinetic-control system and display screen |
| CN111314685A (en) * | 2020-02-17 | 2020-06-19 | 深圳市时代华影科技股份有限公司 | LED video display system and display method thereof |
| CN113096591A (en) * | 2021-06-08 | 2021-07-09 | 成都成电光信科技股份有限公司 | LED display video transmission method |
-
2011
- 2011-11-03 CN CN201120428576XU patent/CN202363045U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065587A (en) * | 2012-12-28 | 2013-04-24 | 富顺光电科技股份有限公司 | Transmitting-card-free low-cost light emitting diode (LED) synchronous display controlling system |
| CN103065587B (en) * | 2012-12-28 | 2016-01-20 | 富顺光电科技股份有限公司 | A kind of LED synchronous display controlling system without sending card |
| CN105006217A (en) * | 2015-03-25 | 2015-10-28 | 潘红兵 | High-loading-capacity asynchronous control system of LED display screen |
| CN104809982A (en) * | 2015-04-30 | 2015-07-29 | 苏州承乐电子科技有限公司 | LED full-color synchronous control system |
| CN105023540A (en) * | 2015-07-31 | 2015-11-04 | 苏州宏展信息科技有限公司 | Data transmission method of LED display screen control system |
| CN105528976A (en) * | 2016-01-29 | 2016-04-27 | 深圳中科维优科技有限公司 | Device and method for automatically measuring and calibrating gamma curve of display screen |
| CN105528976B (en) * | 2016-01-29 | 2018-06-05 | 深圳中科维优科技有限公司 | All automatic measurement and the apparatus and method of calibration display screen gamma curve |
| CN110111730A (en) * | 2019-06-21 | 2019-08-09 | 深圳市洲明科技股份有限公司 | Display screen kinetic-control system and display screen |
| CN110111730B (en) * | 2019-06-21 | 2023-08-22 | 深圳市洲明科技股份有限公司 | Display screen dynamic control system and display screen |
| CN111314685A (en) * | 2020-02-17 | 2020-06-19 | 深圳市时代华影科技股份有限公司 | LED video display system and display method thereof |
| CN111314685B (en) * | 2020-02-17 | 2024-02-27 | 深圳市时代华影科技股份有限公司 | LED video display system and display method thereof |
| CN113096591A (en) * | 2021-06-08 | 2021-07-09 | 成都成电光信科技股份有限公司 | LED display video transmission method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190409 Address after: 211100 Jiangsu Province Jiangning District High-tech Park Corning Road 777A Patentee after: Jiangsu Henderson Intelligent Technology Co., Ltd. Address before: 211100 No. 777 Kening Road, Jiangning Science Park, Nanjing City, Jiangsu Province Patentee before: Nanjing Handson Science & Technology Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20201103 |