CN111161669A

CN111161669A - LED intelligence glass display system

Info

Publication number: CN111161669A
Application number: CN201811320267.3A
Authority: CN
Inventors: 邓伟
Original assignee: Deyang Jingyang Lingdong Creative Design Co ltd
Current assignee: Deyang Jingyang Lingdong Creative Design Co ltd
Priority date: 2018-11-07
Filing date: 2018-11-07
Publication date: 2020-05-15

Abstract

The invention discloses an LED intelligent glass display system which comprises a video generation unit, a coordinate mapping unit, an MCU control unit, a transmission unit and a driving unit, wherein the coordinate mapping unit and the video generation unit form an upper computer, the coordinate mapping unit is connected to the input end of the MCU control unit, the coordinate mapping unit is connected to a USB module of an MUC control unit, and the transmission unit is respectively connected with the MCU control unit and the driving unit. According to the invention, a video with a resolution corresponding to the resolution of the LED intelligent glass to be displayed is manufactured according to the resolution, the video source is input into the MCU controller, and the micro control module receives an LED scanning mode drawn by the coordinate mapping unit through the USB interface to control the data reading of the SRAM memory outside the FPGA control module. The transmission unit receives the video data processed by the MCU controller, transmits the video data to the driving unit, and finally drives the LED intelligent glass to display by the driving unit.

Description

LED intelligence glass display system

Technical Field

The invention relates to the field of advertisement design, in particular to an LED intelligent glass display system.

Background

The LED display screen is widely applied to places such as large shopping malls, writing buildings, stadiums, large squares and various office windows by virtue of various advantages, and is used for displaying required LED videos or patterns. In recent years, as a novel media industry, the LED display screen has rapid development and wide prospect. With the rapid development of the electronic information industry, the LED display technology has become mature, however, the LED displays generally have the characteristics of small display area, low gray scale level, single information source and difficult installation engineering. Until 2004, germany developed a new luminescent material, LED smart glass, that effectively changed the above-mentioned problems. The research on the LED intelligent glass is started in 2006 in China, and the LED intelligent glass is in the research stage at present. The LED display screen is a high-tech product integrating the photoelectric technology, the microelectronic technology, the communication technology and the large-scale integrated circuit technology, can display characters, pictures and videos, and is a mainstream media tool in the modern society. The LED as a display device is developed in the end of the sixty years of the last century, China starts to develop the LED display screen later, and about the nineties of the last century, but with the progress of national science and technology, the LED display screen is basically synchronous with the development level of the world. In the past ninety years of the last century, due to the limitations of microelectronic technology, material technology and communication technology, the display effect of the LED display screen is poor, and the price is higher, so that the LED display screen is not widely applied in China. After the twenty-first century, along with the growth of the global information industry, the material technology and the information technology have been greatly improved, and the technology of the LED display screen has entered the period of rapid development. With the appearance of full-color LED display screens, corresponding control technologies are also developed, so that the gray adjustment of different gray levels of the LED display screens is realized, and the dynamic display effect of the LED display screens is improved. In China, the LED display screen is used from a plurality of enterprises in the initial stage to be developed to be widely applied in a plurality of fields such as banks, stadiums, airports, stock exchange centers, hospitals and the like in the later stage, and the LED display screen is developing vigorously as a new industry. The LED intelligent glass not only has the display characteristics of the traditional LED, but also has the characteristics of building materials. Compared with the existing LED display screen, the LED display screen has more advantages in both display effect and application range. The structure of the LED intelligent glass is greatly different from that of the existing LED display screen, and the existing LED display technology cannot be transplanted to the LED intelligent glass display screen. An LED smart glass display system has been developed.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an LED intelligent glass display system, which manufactures a video with a resolution corresponding to the resolution of the LED intelligent glass to be displayed according to the resolution and inputs the video into an MCU controller. The coordinate mapping unit is used for drawing a scanning mode, the scanning mode is used for establishing a two-dimensional coordinate space according to the required video resolution, port coordinates of each pixel point are configured, the change of the scanning mode corresponds to the coordinate transformation of the pixel points, and the micro control module receives the LED scanning mode drawn by the coordinate mapping unit through the USB interface to control the data reading of an external SRAM memory of the FPGA control module. The transmission unit receives the video data processed by the MCU controller, transmits the video data to the driving unit, and finally drives the LED intelligent glass to display by the driving unit.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a LED intelligence glass display system, includes video generation unit, coordinate mapping unit, MCU the control unit, transmission unit and drive unit, coordinate mapping unit and video generation unit constitute the host computer, coordinate mapping unit be connected to MCU the input of control unit, coordinate mapping unit be connected to MUC the control unit's USB module, transmission unit connect MCU the control unit respectively and drive unit.

Further, as a preferred technical scheme, the MUC control unit comprises a DVI part, an FPGA control module, a line driving module, a micro control module and a data cache module, wherein the DVI part is respectively connected with the video generation unit and the FPGA control module, and the FPGA control module is respectively connected with the data cache module, the line driving module and the micro control module.

Further, as a preferred technical solution, the DVI part includes an input module, a fan-out switch, an output module, and a decoding module, the fan-out switch is respectively connected to the input module, the output module, and the decoding module, the input unit is connected to the video generating unit, and the decoding module is connected to the FPGA control module.

Further, as a preferred technical solution, the micro control module is provided with a USB port, and the USB port is connected to the USB module.

Further, as a preferred technical scheme, the driving unit is connected to the controlled LED intelligent glass.

Further, as a preferred technical scheme, the microcontroller is further connected with a Flash memory module.

The invention has the following beneficial effects:

according to the invention, a video with a resolution corresponding to the resolution of the LED intelligent glass to be displayed is manufactured according to the resolution, the video source is input into the MCU controller, and the micro control module receives an LED scanning mode drawn by the coordinate mapping unit through the USB interface to control the data reading of the SRAM memory outside the FPGA control module. The transmission unit receives the video data processed by the MCU controller, transmits the video data to the driving unit, and finally drives the LED intelligent glass to display by the driving unit.

Drawings

FIG. 1 is a block diagram of the structure of the present invention.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Example 1

As shown in fig. 1, the LED intelligent glass display system comprises a video generation unit, a coordinate mapping unit, an MCU control unit, a transmission unit and a driving unit, wherein the coordinate mapping unit and the video generation unit form an upper computer, the coordinate mapping unit is connected to an input end of the MCU control unit, the coordinate mapping unit is connected to a USB module of the MUC control unit, the transmission unit is respectively connected to the MCU control unit and the driving unit, and the driving unit is connected to a controlled LED intelligent glass.

MUC the control unit includes DVI part, FPGA control module, line drive module, little control module and data cache module, the DVI part connect video generation unit and FPGA control module respectively, FPGA control module connect data cache module, line drive module and little control module respectively, the DVI part include input module, fan-out switch, output module and decoding module, the fan-out switch be connected to input module, output module and decoding module respectively, input unit connect video generation unit, decoding module be connected to FPGA control module, little control module be provided with the USB port, the USB port be connected to the USB module, microcontroller still connect Flash memory module.

When the intelligent LED glass display device works, a video generating unit with variable resolution is designed in the upper computer, the video generating unit mainly makes videos with corresponding resolution according to the resolution of the LED intelligent glass to be displayed, and the made videos are transmitted to the MCU controller through DVI lines. The coordinate mapping unit is used for drawing a scanning mode, and the scanning mode is used for establishing a two-dimensional coordinate space according to the required video resolution and configuring the port coordinate of each pixel point. The port coordinate information is read address data of an SRAM in the MCU controller, different scanning modes correspond to different specifications of LED intelligent glass, and finally the MCU controller outputs videos corresponding to the number of the LED intelligent glass lattices according to the content of the scanning modes. Therefore, when the size or specification of the LED intelligent glass display screen is changed, the corresponding scanning mode is generated only by using the coordinate mapping unit, and the video processing program or hardware circuit in the FPGA control module is not required to be modified, so that the whole LED display system is more flexible in use. The scanning mode designed by the coordinate mapping unit is downloaded to an external FLASH of the micro control module through a USB serial port, and finally the micro control module sends the data to the FPGA control module, so that the data reading of an external SRAM is finally completed. In the MCU controller, video data mainly operate two external SRAM memories through an FPGA control module to realize ping-pong storage. The main function is that the MCU controller receives the video source that the video generating element provided through the DVI line, converts the video source signal into R, G, B component signal through the DVI decoding circuit to buffer the component signal, and deposit in outside SRAM memory according to certain rule. The FPGA control module is mainly responsible for further converting and processing display data, generating time sequence data which accord with the LED driving chip, sending the time sequence data into the driving unit, and finally driving the LED intelligent glass to display by the driving unit. And the micro control module receives the LED scanning mode drawn by the coordinate mapping unit through the USB interface to control the reading sequence of the video data. Can correspond to the glass lattices one by one. When the transmission unit transmits video data, a differential transmission mode is adopted, and the transmission unit has the advantages that the anti-interference capacity is higher in the transmission process and signals are not easy to distort compared with single-ended signal differential signals. The transmission unit comprises a transmission circuit and a receiving circuit, the transmission circuit is arranged on the MCU controller, differential data and clock signals output by the transmission circuit are transmitted to the receiving circuit through the twisted pair, and the final drive unit only receives single-ended signals, so that the receiving circuit is used for restoring the differential signals into original single-ended signals and transmitting the single-ended signals to the drive unit. The differential signal is kept in the whole data transmission process, so that the loss and distortion of pixel data are avoided. The driving unit is used for driving the LED intelligent glass to display and adopts a driving pulse duty ratio control method. The driving unit receives the single-ended signal input by the transmission unit, outputs R, G, B data of the corresponding LED dot matrix according to a certain time sequence relation, and accordingly drives the LED intelligent glass to display.

Preferably, the DVI decoding unit mainly receives a video signal in a DVI format, 4 sets of differential signals are output from the DVI interface after the video source signal is coded by the DVI, and the four sets of signals are decoded by the DVI decoding chip to generate three sets of data signals, a data enable signal DE, a field signal VSYNC, a line signal HSYNC and a data clock signal PCLK. DVI is a digital video interface. The method is based on the PanalLink interface technology and adopts TMDS as basic electrical connection. A complete digital video interface display system comprises two parts: a transmitter and a receiver. The transmitter is generally soldered to the circuit board of the graphics card, and the video data generated by the PC is sent to the graphics card where some control signals and pixel signals are encoded. While the receiver is typically present in the display and decodes the received control signals and pixel signals to generate video information that is recognized by the display device. There are three different forms of interface for DVI,

the present specification and figures are to be regarded as illustrative rather than restrictive, and it is intended that all such alterations and modifications that fall within the true spirit and scope of the invention, and that all such modifications and variations are included within the scope of the invention as determined by the appended claims without the use of inventive faculty.

Claims

1. The utility model provides a LED intelligence glass display system, includes video generation unit, coordinate mapping unit, MCU the control unit, transmission unit and drive unit, its characterized in that, coordinate mapping unit and video generation unit constitute the host computer, coordinate mapping unit be connected to MCU the input of control unit, coordinate mapping unit be connected to MUC the control unit's USB module, transmission unit connect MCU the control unit and the drive unit respectively.

2. The LED smart glass display system of claim 1, wherein said MUC control unit comprises a DVI portion, an FPGA control module, a line driver module, a micro-control module, and a data cache module, said DVI portion is connected to said video generator unit and said FPGA control module, respectively, and said FPGA control module is connected to said data cache module, said line driver module, and said micro-control module, respectively.

3. An LED smart glass display system as recited in claim 2, wherein said DVI section includes an input module, a fan-out switch, an output module and a decode module, said fan-out switch being connected to said input module, said output module and said decode module, respectively, said input unit being connected to said video generation unit and said decode module being connected to said FPGA control module.

4. An LED smart glass display system as claimed in claim 2, wherein said micro control module is provided with a USB port, said USB port being connected to a USB module.

5. An LED smart glass display system as claimed in claim 1, wherein the drive unit is connected to the controlled LED smart glass.

6. The LED intelligent glass display system of claim 1, wherein the microcontroller is further connected to a Flash memory module.