CN103996372B - LED display and the control method thereof of storage and read-write data on module can be realized - Google Patents
LED display and the control method thereof of storage and read-write data on module can be realized Download PDFInfo
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Abstract
The invention discloses a kind of LED display realizing storage and read-write data on module and control method thereof。The LED display of storage and read-write data on module can be realized include: one or more receiver module being in series, and the multiple module passages in parallel with each receiver module, each module passage includes one or more LED module being in series；Receiver module includes central control unit, data processing unit and read-write control unit；LED module includes LED point array element and memory element；Central control unit connects data processing unit and read-write control unit respectively；Read-write control unit connects the memory element of each LED module in each module passage；Data processing unit connects the LED point array element of each LED module in each module passage。Application technical solution of the present invention, it is simple to the installation of module and maintenance, and it is easy to Function Extension。
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of LED display realizing storage and read-write data on module and control method thereof。
Background technology
LED (Lightemittingdiode, light emitting diode) display screen owing to having brightness height, running voltage is low, power consumption is little, maximization, life-span length, shock-resistant, steady performance, receive significant attention and develop rapidly。The development prospect of LED display is extremely wide, and current LED display has been widely used for the advertising of the different places such as stadiums, business application, bank, security, postal service, harbour, market。
Traditional LED display generally comprises LED module and controls card。LED module only comprises LED array and corresponding drive circuit, is producing, is installing and in use procedure, it is necessary to the position of labelling each module good, is providing control signal by controlling card for each module, and then control the light on and off of LED array, it is achieved the display of image。Thus, traditional LED display is installed, is used trouble, is not easy to safeguard, and the function singleness realized。
Summary of the invention
Based on this, it is necessary to provide a kind of LED display realizing storage and read-write data on module and display control method thereof, apply the LED display realizing storage and read-write data on module provided by the invention and display control method, it is simple to the installation of module and maintenance, and be easy to Function Extension。
A kind of LED display realizing storing and read and write data on module, including: one or more receiver module being in series, and the module passages multiple in parallel being connected with each receiver module, each described module passage includes one or more LED module being in series；
Described receiver module includes central control unit, data processing unit and read-write control unit；Described LED module includes LED point array element and memory element；Described central control unit connects described data processing unit and described read-write control unit respectively, is used for coordinating described data processing unit and described read-write control unit is operated；Described read-write control unit connects the memory element of each LED module in each module passage；Described data processing unit connects the LED point array element of each LED module in each module passage；
Described data processing unit controls parameter for the display receiving each LED module of host computer transmission, and is stored by described read-write control unit in the memory element of each LED module；
Described data processing unit is additionally operable to receive the video data of host computer transmission, the stored display of memory element being read each LED module by described read-write control unit controls parameter, described video data is processed, produce the display control signal of each LED module, and described display control signal is transferred to the LED point array element of each LED module, display。
Wherein in an embodiment, the described LED display realizing storing on module and reading and writing data specifically includes the receiver module that two or more is serially connected, and the module passage of the multiple parallel connections being connected with each receiver module, each described module passage includes the LED module that two or more is in series；
Described read-write control unit connects the memory element of each LED module in each module passage by serial bus interface, and described read-write control unit connects the chip selection signal of each LED module memory element in each module passage by shift control chip。
Wherein in an embodiment, described serial bus interface connects the memory element of each LED module by 74HC245D transceiver；Described shift control chip is 74HC74 chip；Described memory element is W25X40 serial high-speed memorizer。
Wherein in an embodiment, the described LED display realizing storing on module and reading and writing data specifically includes the receiver module that two or more is in series and the multiple LED modules in parallel with each receiver module。
Wherein in an embodiment, the described LED display realizing storing on module and reading and writing data specifically includes a receiver module and the multiple LED modules connected with described receiver module；
Described receiver module is specially FPGA control chip, and described FPGA control chip is by the memory element of SPI serial line interface each LED module in parallel, and the chip selection signal of the memory element of each LED module connects described FPGA control chip。
A kind of display control method realizing storing and read and write the LED display of data on module, including:
Received the display control parameter of each LED module of host computer transmission by the data processing unit of receiver module, and store the memory element in each LED module by read-write control unit；
Data processing unit receives the video data of host computer transmission, and the display being loaded each LED module by read-write control unit controls parameter, described video data is processed, produces the display control signal of each LED module；
The LED point array element of each LED module receives corresponding display control signal, displays。
Wherein in an embodiment, described method also includes:
Described data processing unit, when receiving the display of each LED module of host computer transmission and controlling parameter, also receives the CRC check data of host computer transmission simultaneously；
When the display that described read-write control unit loads each LED module controls parameter, perform CRC check。
Wherein in an embodiment, described method also includes:
Data processing unit receives the production information of each LED module of host computer transmission, and is stored in the memory element in each LED module by described read-write control unit。
The above-mentioned LED display realizing storage and read-write data on module and display control method thereof, receiver module includes read-write control unit and data processing unit, LED module includes LED point array element and memory element, before display, the display being received each LED module by data processing module controls parameter, and store in the memory element of each LED module, after data processing module receives the video data of host computer transmission, loaded and displayed controls parameter and processes, produce the display control signal that each LED point array element is corresponding, and then control LED point array element displays, compared in conventional art, LED module is without storage function, producing, install, use procedure needs the position of each LED module of labelling, improve installation and the maintenance efficiency of LED display, and it is easy to write more content in the memory unit, realize extension functionally。
Accompanying drawing explanation
Fig. 1 is the structural representation of the LED display of storage and read-write data on the realized module in an embodiment；
Fig. 2 is the structural representation that on the realized module in an embodiment, the LED display of storage and read-write data is connected with host computer；
Fig. 3 can realize in one embodiment storing on module and the structural representation of a module passage in the LED display of read-write data；
Fig. 4 is the structural representation that on the realized module in an embodiment, the LED display of storage and read-write data is connected with host computer；
Fig. 5 is the structural representation that in an embodiment, receiver module is connected with the memory element of each LED module；
Fig. 6 is the schematic flow sheet of the display control method in an embodiment。
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated。Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention。
Referring to Fig. 1, it is provided that a kind of LED display realizing storing and read and write data on module。This can realize the LED display of storage and read-write data on module and include: the receiver module 102 that one or more is in series, and the module passage 104 of the multiple parallel connections being connected with each receiver module 102 (wherein Fig. 1 schematically draws two receiver modules, each receiver module schematically connects a module passage), each module passage 104 includes one or more LED module 1040 (only drawing a LED module in Fig. 1 in each module passage) being in series。
Receiver module 102 includes central control unit 1022, data processing unit 1024 and read-write control unit 1026。LED module 1040 includes LED point array element 1042 and memory element 1044。Central control unit 1022 connects data processing unit 1024 and read-write control unit 1026 respectively, is operated for coordination data processing unit 1024 and read-write control unit 1026。Read-write control unit 1026 connects the memory element 1044 of each LED module in each module passage。Data processing unit 1024 connects the LED point array element 1042 of each LED module in each module passage。
The LED display of storage and read-write data on the realized module that the present embodiment provides, its main operational principle is as described below:
Carry out before image shows at the LED display that can realize on module storage and read-write data, the data processing unit 1024 of some receiver module 102 is under the control of central control unit 1022, the display of each LED module receiving host computer transmission controls parameter, such as screen parameter, brightness correction coefficients, chromaticity correction coefficient etc.。The display that data processing unit 1024 intercepts, according to communication protocol, each LED module that this receiver module connects controls parameter, and is stored by read-write control unit 1026 in the memory element 1044 of each LED module。Display is controlled parameter simultaneously and is transmitted to other receiver module by data processing unit 1024, and the processing procedure of other receiver module is similar with said process。In addition, for realizing further Function Extension, such as in order to ensure the correctness that data are transmitted, checking data can also be write in each memory element, such as CRC (CyclicRedundancyCheck, cyclic redundancy check (CRC)) checking data, when there being data to read from memory element, CRC check will be performed；Such as can write the production information of each LED module to each memory element, safeguard information again, it is simple to the maintenance of follow-up each LED module especially LED point array element。
The LED display storing and reading and writing data on module can be realized when display, data processing unit 1024 is under the control of central control unit 1022, video data is received from host computer, data processing unit 1024 can be transmitted to the data processing unit of other receiver module after receiving video data, the data processing unit 1024 of each receiver module is according to each LED module being connected with receiver module, intercept the corresponding part in video data, and the stored display control parameter of memory element of each LED module is read by read-write control unit 1026, video data is decompressed, calculation process, produce the display control signal corresponding to each LED module。
The LED point array element 1042 of each LED module receives the display control signal of data processing unit 1024 transmission, displays。LED point array element is referred to conventional art, including the drive circuit of LED lamp bead and correspondence thereof。
The above-mentioned LED display realizing storing and read and write data on module, receiver module includes read-write control unit and data processing unit, LED module includes LED point array element and memory element, before display, the display being received each LED module by data processing module controls parameter, and store in the memory element of each LED module, after data processing module receives the video data of host computer transmission, loaded and displayed controls parameter and processes, produce the display control signal that each LED point array element is corresponding, and then control LED point array element displays, compared in conventional art, LED module is without storage function, producing, install, use procedure needs the position of each LED module of labelling, improve installation and the maintenance efficiency of LED display, and it is easy to write more content in the memory unit, realize extension functionally。
Referring to Fig. 2, in one embodiment, it is provided that the structural representation that a kind of LED display realizing on module storage and read-write data is connected with host computer 200。Host computer 200 can be, but not limited to the receiver module being to be connected this LED display by PCI-Express。This LED display specifically includes the receiver module 202 that two or more is serially connected and the module passage of the multiple parallel connections being connected with each receiver module, and each module passage includes the LED module 204 that two or more is in series。In this enforcement, receiver module includes central control unit, data processing unit and read-write control unit, and LED module includes LED point array element and memory element, and its concrete structure is referred in Fig. 1 embodiment, repeats no more herein。For the annexation of the memory element of each module passage, receiver module and each LED module, as shown in Figure 3:
The read-write control unit of receiver module connects the memory element of each LED module by serial bus interface, concrete, in the present embodiment, serial bus interface is SPI (SerialPeripheralInterface, Serial Peripheral Interface (SPI)) interface, Spi_sck is clock signal, Spi_sdi is data write signal, Spi_sdo is data reading signal, and SPI interface is the memory element (memory element 3044 such as the memory element 3024 of LED module 302 and LED module 304) being connected each LED module by 74HC245D transceiver 300。In the present embodiment, each LED module memory element can be W25X40 serial high-speed memorizer。In addition, read-write control unit connects the chip selection signal of each LED module memory element by shift control chip (such as 74HC74), concrete, chip selection signal Ncs_data selects clock Ncs_clk signal to shift according to module, when 74HC74 is output as low level, select corresponding W25X40 serial high-speed memorizer。
Referring to Fig. 4, in one embodiment, it is provided that another kind can realize the structural representation that on module, the LED display of storage and read-write data is connected with host computer 400。This can realize the LED display of storage and read-write data on module and specifically include the receiver module 402 that two or more is in series, and the multiple LED modules 404 in parallel with each receiver module, the wherein concrete structure of receiver module 404 and LED module 404, it is possible to reference to the description of embodiment in Fig. 1。The LED display of storage and read-write data on the realized module that the present embodiment provides, relative to the LED display of storage on the realized module of embodiment in Fig. 2 and read-write data, structure is relatively easy。
Referring to Fig. 5, in one embodiment, it is provided that a kind of LED display realizing storing and read and write data on module。The LED display of storage and read-write data on the realized module that the present embodiment provides, compared to the LED display of storage on the realized module in Fig. 4 embodiment and read-write data, structure is more simple, it is adaptable to show less demanding application scenarios。The LED display of storage and read-write data on the realized module that the present embodiment provides, including a receiver module 500, and the multiple LED modules (only drawing the memory element of each LED module in figure) connected with receiver module, the structure of receiver module and LED module is as described in Figure 1。Concrete, receiver module 500 can be FPGA (Field-ProgrammableGateArray, field programmable gate array) control chip, FPGA control chip is by the memory element 502,504 and 506 etc. of SPI serial line interface each LED module in parallel, wherein SCK is clock signal, SDI is data reading signal, and SDO is data write signal。The chip selection signal of the memory element of each LED module connects FPGA control chip, is namely provided the chip selection signal of memory element by pin CS1, CS2, CS3 of FPGA control chip etc., and under being normally applied scene, FPGA control chip can connect 16 LED modules。
Referring to Fig. 6, in one embodiment, a kind of display control method is provided accordingly。The method may apply to store on the realized module in Fig. 1 embodiment and in the LED display of read-write data。The method specifically includes flow process:
Step 602, is received the display control parameter of each LED module of host computer transmission, and stores the memory element in each LED module by read-write control unit by the data processing unit of receiver module。
Step 604, data processing unit receives the video data of host computer transmission, and the display being loaded each LED module by read-write control unit controls parameter, video data is processed, produces the display control signal of each LED module。
Step 606, the LED point array element of each LED module receives corresponding display control signal, displays。
Additionally, for realizing further Function Extension, data processing unit is when receiving the display of each LED module of host computer transmission and controlling parameter, it is also possible to receive the CRC check data of host computer transmission simultaneously。When the display that read-write control unit loads each LED module controls parameter, perform CRC check。
Additionally, in the present embodiment, data processing unit receives the production information of each LED module of host computer transmission, and stores in the memory element in each LED module by read-write control unit, it is simple to the maintenance of follow-up LED display。
In the present embodiment, memory element can be flash storage chip, and the storage content of its sector is as shown in table 1, not only stores screen parameter, brightness correction coefficients etc. at flash storage chip, is also reserved with the spare space of 64k, carries out Function Extension for user。
Table 1:flash storage chip sector divides table
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention。It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention。Therefore, the protection domain of patent of the present invention should be as the criterion with claims。
Claims (7)
1. one kind can realize the LED display of storage and read-write data on module, it is characterized in that, including: one or more receiver module being in series, and the module passages multiple in parallel being connected with each receiver module, each described module passage includes one or more LED module being in series；
Described receiver module includes central control unit, data processing unit and read-write control unit；Described LED module includes LED point array element and memory element；Described central control unit connects described data processing unit and described read-write control unit respectively, is used for coordinating described data processing unit and described read-write control unit is operated；Described read-write control unit connects the memory element of each LED module in each module passage；Described data processing unit connects the LED point array element of each LED module in each module passage；
Described data processing unit controls parameter for the display receiving each LED module of host computer transmission, and is stored by described read-write control unit in the memory element of each LED module；
Described data processing unit is additionally operable to receive the video data of host computer transmission, the stored display of memory element being read each LED module by described read-write control unit controls parameter, described video data is processed, produce the display control signal of each LED module, and described display control signal is transferred to the LED point array element of each LED module, display。
2. the LED display realizing storing and read and write data on module according to claim 1, it is characterized in that, when the described LED display realizing storing on module and reading and writing data specifically includes the receiver module that two or more is serially connected, and the module passage of the multiple parallel connections being connected with each receiver module, when each described module passage includes the LED module that two or more is in series
Described read-write control unit connects the memory element of each LED module in each module passage by serial bus interface, and described read-write control unit connects the chip selection signal of each LED module memory element in each module passage by shift control chip。
3. the LED display realizing storing and read and write data on module according to claim 2, it is characterised in that described serial bus interface connects the memory element of each LED module by 74HC245D transceiver；Described shift control chip is 74HC74 chip；Described memory element is W25X40 serial high-speed memorizer。
4. the LED display realizing storing and read and write data on module according to claim 1, it is characterized in that, the described LED display realizing storing on module and reading and writing data specifically includes a receiver module and the multiple LED modules connected with described receiver module；
Described receiver module is specially FPGA control chip, and described FPGA control chip is by the memory element of SPI serial line interface each LED module in parallel, and the chip selection signal of the memory element of each LED module connects described FPGA control chip。
5. one kind for realizing on module the display control method of the LED display of storage and read-write data as claimed in claim 1, it is characterised in that described method includes:
Received the display control parameter of each LED module of host computer transmission by the data processing unit of receiver module, and store the memory element in each LED module by read-write control unit；
Data processing unit receives the video data of host computer transmission, and the display being loaded each LED module by read-write control unit controls parameter, described video data is processed, produces the display control signal of each LED module；
The LED point array element of each LED module receives corresponding display control signal, displays。
6. display control method according to claim 5, it is characterised in that described method also includes:
Described data processing unit, when receiving the display of each LED module of host computer transmission and controlling parameter, also receives the CRC check data of host computer transmission simultaneously；
When the display that described read-write control unit loads each LED module controls parameter, perform CRC check。
7. method according to claim 5, it is characterised in that described method also includes:
Data processing unit receives the production information of each LED module of host computer transmission, and is stored in the memory element in each LED module by described read-write control unit。
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| CN104616622A (en) * | 2015-02-12 | 2015-05-13 | 郑先贵 | LED (Light Emitting Diode) display screen module with memory function |
| CN104851393B (en) * | 2015-06-11 | 2017-07-18 | 长沙信元电子科技有限公司 | The circuit solution and its circuit of a kind of open type LED display |
| CN104966468A (en) * | 2015-06-24 | 2015-10-07 | 深圳市中庆光电显示科技开发有限公司 | LED box, LED display screen and LED display system |
| CN104992672B (en) * | 2015-07-16 | 2018-03-27 | 西安诺瓦电子科技有限公司 | Led lamp panel |
| CN106023879B (en) * | 2016-06-29 | 2019-01-18 | 北京良业环境技术有限公司 | LED pixel screen system with interactive function |
| CN108235493B (en) * | 2016-12-22 | 2021-08-10 | 宁波舜宇光电信息有限公司 | Light source adjusting device and light source controller thereof |
| CN108319558A (en) * | 2018-03-12 | 2018-07-24 | 厦门强力巨彩光电科技有限公司 | A kind of New Bus driver with store function parallel series cascade data |
| CN108230993A (en) * | 2018-03-12 | 2018-06-29 | 厦门强力巨彩光电科技有限公司 | A kind of LED display modules and its control method with storage unit |
| CN112802427B (en) * | 2021-04-14 | 2021-08-03 | 杭州视芯科技有限公司 | LED drive circuit, LED display system and display control method |
| CN114038404A (en) * | 2021-11-17 | 2022-02-11 | 东莞阿尔泰显示技术有限公司 | Display data distribution method of improved display module |
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| JP3297896B2 (en) * | 1994-09-30 | 2002-07-02 | タキロン株式会社 | Data distributor for dot matrix type LED display device |
| CN101127191B (en) * | 2007-09-24 | 2011-05-18 | 杭州士兰微电子股份有限公司 | LED matrix screen parameter calibration system and method |
| US20100225502A1 (en) * | 2009-03-09 | 2010-09-09 | Mohamed Roshdy Elsheemy | Colored LED traffic light display |
| CN101866620B (en) * | 2010-05-26 | 2015-07-08 | 北京中庆微数字设备开发有限公司 | Universal LED display screen control device |
| CN102142231B (en) * | 2011-04-18 | 2015-09-16 | 深圳市中庆微科技开发有限公司 | A kind of control system of extra-large LED display screen |
| CN102262847A (en) * | 2011-04-26 | 2011-11-30 | 葛晨阳 | Embedded light-emitting diode (LED) display control system and method for controlling same |
| CN203644372U (en) * | 2013-11-21 | 2014-06-11 | 深圳市立鼎光电技术有限公司 | Led display screen |
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Address after: 518000 Room 401, 410, 4th floor, building a, Baiwang building, No.1, Baimang village south, Shahe West Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Carlette cloud Technology Co.,Ltd. Address before: 518000 Room 401, 410, 4th floor, building a, Baiwang building, No.1, Baimang village south, Shahe West Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Carlette (Shenzhen) cloud Technology Co.,Ltd. Address after: 518000 Room 401, 410, 4th floor, building a, Baiwang building, No.1, Baimang village south, Shahe West Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Carlette (Shenzhen) cloud Technology Co.,Ltd. Address before: 518000 Room 401, 410, 4th floor, building a, Baiwang building, No.1, Baimang village south, Shahe West Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: COLORLIGHT (SHENZHEN) CLOUD TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 3801, block a, block 8, block C, Wanke Yuncheng phase III, Liuxin Fourth Street, Xili community, Nanshan District, Shenzhen City, Guangdong Province (37-39 floors) Patentee after: Carlette cloud Technology Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Shahe West Road, Pak Mong Village No. 1 South Building, Piovan A building 4 floor 401, 410 Patentee before: Carlette cloud Technology Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |