CN115776559A - System for full-color LED display screen realizes 3D demonstration - Google Patents

Abstract

The invention discloses a system for realizing 3D display of a full-color LED display screen, and relates to the technical field of 3D. Including LED display screen, 3D concatenation treater, 3D synchrotransmitter and a plurality of 3D glasses, the output and the LED display screen of 3D concatenation treater link to each other, and 3D concatenation treater's 3DVESA interface links to each other with 3D synchrotransmitter, and 3D synchrotransmitter passes through the bluetooth with 3D glasses and is connected, 3D glasses adopt active shutter 2.4G bluetooth 3D glasses that charge, 3D concatenation treater built-in 3D sync VESA synchronization head, through the external 3D synchrotransmitter of 3D VESA interface to realize that shutter type 3D glasses are correctly synchronous with 3D multipicture concatenation treater, reach the 3D effect. The invention can well realize 3D display, and simultaneously can improve the LED refresh rate to be more than 1920Hz or even 3840Hz through the receiving card, thereby well solving the flicker feeling appearing on the LED television and improving the display effect.

Description

System for full-color LED display screen realizes 3D demonstration

Technical Field

The invention relates to the technical field of 3D, in particular to a system for realizing 3D display by a full-color LED display screen.

Background

The LED display screen is one of the most popular display modes at present, and has irreplaceability in a plurality of important occasions, and is mainly embodied in the advantages of large area, large visual angle, high color uniformity, high gray level, easy maintenance and the like. And further get more and more favor in occasions such as education and teaching, exhibition show, VR/AR. With the development of 3D display technology and the increase of various market application scenes, the demand of realizing 3D display by the LED indoor small-space screen is continuously increased, and the future application prospect is wide.

The 3D display technology is a technology for receiving different images by allowing left and right eyes of a human to generate parallax using a series of optical methods, and forming a stereoscopic effect in a brain. The human eyes are laterally arranged side by side and spaced 6-7cm apart, so that the images seen by the left eye and the right eye have slight difference, which is called "Parallax (Parallax)", and the brain interprets the Parallax of the eyes and judges the distance of the object and generates stereoscopic vision. Stereoscopic vision is based on parallax, and 3D display is intended to reproduce parallax manually, i.e. to make left and right eyes respectively see different images, so as to simulate stereoscopic vision on a planar display panel.

The current 3D display technology mainly has the following defects:

1. naked eye 3D technology: the light of the LED luminotron of the large-size LED display screen is divergent and cannot form a real naked eye 3D function, some scientific research institutes perform research on adding a refraction film in front of the LED display screen, a certain naked eye 3D effect is slightly formed, but the method has very large limitation on viewing angles, distances and visual field ranges, and has no practical value at present.

2. Color difference type 3D technology: the method is easy to cause the color cast at the edge of the picture, the loss of color details is serious, the color is not rich, and the color cast is red and blue. In addition, the standards for the color separation method are not uniform all the time, and the two-color glasses customized for a movie can basically filter out the respective corresponding bands, but serious ghost image situations can be generated because the standard problem is that the two-color glasses cannot completely filter.

3. Polarized 3D technology: because the original picture is received by the eyes after being divided into two parts, the resolution ratio is halved on the original basis, and the definition and the brightness are reduced. For the LED large screen base, the input of a high-resolution LED large screen is meant, and the original general resolution effect is only achieved actually. Meanwhile, the polarization 3D technology has special requirements for the display panel, and the outer layer of the panel must be added with a polarization layer, so that the cost of the panel is increased,

in conclusion, the invention designs a system for realizing 3D display by using a full-color LED display screen.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a system for realizing 3D display by using a full-color LED display screen, which can well realize 3D display, and can improve the LED refresh rate to be more than 1920Hz or even 3840Hz by using a receiving card, thereby well solving the flicker feeling on an LED television and improving the display effect.

In order to realize the purpose, the invention is realized by the following technical scheme: the utility model provides a full-color LED display screen realizes system that 3D shows, includes LED display screen, 3D concatenation treater, 3D synchronous transmitter and a plurality of 3D glasses, and the output of 3D concatenation treater links to each other with the LED display screen, and the 3D VESA interface of 3D concatenation treater links to each other with 3D synchronous transmitter, and 3D synchronous transmitter passes through the bluetooth with 3D glasses and is connected.

Preferably, the 3D glasses adopt active charging shutter 2.4G bluetooth 3D glasses.

Preferably, the 3D splicing processor is internally provided with a 3D sync vesa synchronization head, and is externally connected with a 3D synchronous transmitter through a 3D ESA interface, so that the shutter type 3D glasses and the 3D multi-picture splicing processor are correctly synchronized, and the 3D effect is achieved.

Preferably, the 3D splicing processor adopts a programmable FPGA as a main video processing chip and an ARM embedded control system, the starting speed is high, the stability is high, and all requirements of customers are realized by a single-board integrated analog and digital mixed analog interface.

Preferably, the 3D stitching processor supports a 4K interface with a 4K input acquisition card, and a resolution of 4K × 2K can be achieved with one input. EDID can be edited by DVI, HDMI1.4, HDMI2.0 and HDMI, and the computer is forced to output custom resolution, so that the best effect of point-to-point display is realized.

Preferably, the 3D splicing processor is further provided with a GEN-LOCK input/output interface to support cascade splicing, thereby achieving a higher resolution.

Preferably, the 3D stitching processor has a 2D/3D simultaneous display function, and the processing algorithm can select any one or more pictures to play 3D or 2D video on the basis of multiple pictures, so as to realize simultaneous display of multiple 3D videos or mixed display of 3D videos or 2D videos. The 3D splicing processor can manually set left and right eye turning and can set an independent 3D working mode by taking a window as a unit, wherein the independent 3D working mode comprises a 2D format, a 3D left and right format, a 3D up and down format and a 3D frame continuous format.

Preferably, the 3D splicing processor adopts an open DVI output interface, and can support all mainstream control systems, a common LED display screen, and a common sending card and receiving card only need to be provided with one 3D video processor, so that free switching from 2D to 3D can be realized.

Preferably, the 3D splicing processor is further connected with the computer end through a data interface of a hardware plug-in method, so that the 3D splicing processor, the computer end and simulation software are synchronously linked, and the problem of image turning under a frame continuous format is fundamentally solved.

Preferably, the 3D splicing processor adopts a modular structure, the hardware adopts a modular design, and the input acquisition card, the input card, the output card, the control card, the data exchange backboard, the fan and the power supply are all modular. The customer can flexibly customize the corresponding card according to the requirement, and the corresponding component can be directly replaced when the fault occurs.

Preferably, the 3D splicing processor adopts a backplane switching technology to ensure that each input/output channel exclusively shares a data bandwidth, all parallel data can be transmitted in parallel at any time, and a signal is displayed in real time without frame loss.

The invention has the following beneficial effects:

1. the 3D splicing processor effectively integrates signal access, data exchange, signal processing, color processing and 3D signal processing together, distributed processing of all modules is achieved, and perfect combination of distributed processing and centralized processing is achieved innovatively. The single machine can reach 80 paths of signals, and the problems of connection, linkage control, compatibility and failure of a series of split machines are avoided. The integrated architecture perfectly combines centralized unification and flexible configuration.

2. The pure hardware board is designed in a card mode and has a modular structure; the hardware adopts a modular design, and the input acquisition card, the input card, the output card, the control card, the data exchange backboard, the fan and the power supply are all modular; a user can flexibly customize a corresponding board card according to the requirement, and only the corresponding fault component is directly replaced when a fault occurs; based on an embedded software system, an ARM + FPGA + CROSSPOINT framework is adopted, the starting speed is high, and the stability is high.

3. Decoding by adopting IP network streaming media; based on FPGA pure hardware architecture, the system adopts H.265/MPEG-4AVC decoding technology and supports standard RTSP protocol. For IP camera signals, IP encoder signals, NVR signals or video streams of MCU in the conference system in the network can be easily decoded and flexibly displayed.

4. Windowing is carried out on multiple pictures at will, the pictures are stretched and compressed at will, and crossing screens and roaming are carried out at will: all accessed signals can be windowed at will in the full screen range; a single output board card can be provided with 8 windows; each window can be displayed on the output screen in a roaming way, and no area limitation exists;

5. inputting a 4K signal: besides signal input interfaces such as conventional cvbs, vga, dvi, HDMI and the like, a plurality of 4K input signals are provided, and single interfaces such as DP1.1, HDMI1.4, HDMI2.0 and the like reach 4K X2K (3840X 2160) resolution; meanwhile, a plurality of input interfaces can be cascaded, so that input signals can reach 8k, 16k or even higher resolution; EDID can be edited online, and the computer is forced to output the self-defined resolution, so that the optimal point-to-point display is realized;

6. an output frame synchronization technique; the output video signals are completely synchronized at all output ports under the unified time service management of a system main clock, the problem that the contents of each display unit are not synchronized is fundamentally solved, and the display units are ensured to be in consistent pace, smooth in picture and free of tearing phenomenon when high-speed signals are played.

Drawings

The invention is described in detail below with reference to the drawings and the detailed description;

FIG. 1 is a system architecture diagram of the present invention;

FIG. 2 is a schematic diagram of an application of embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of an application of embodiment 2 of the present invention;

fig. 4 is a schematic diagram of an application of embodiment 3 of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1, the following technical solutions are adopted in the present embodiment: the utility model provides a full-color LED display screen realizes system that 3D shows, includes that LED display screen 1, 3D concatenation treater 2, 3D synchrotron 3 and a plurality of 3D glasses 4,3D concatenation treater 2's output links to each other with LED display screen 1, and 3D VESA interface and 3D synchrotron 3 of 3D concatenation treater 2 link to each other, and 3D synchrotron 3 passes through the bluetooth with 3D glasses 4 and is connected.

It is worth noting that the 3D glasses 4 adopt active charging shutter 2.4G bluetooth 3D glasses.

It is worth noting that the 3D splicing processor 2 is internally provided with a 3D sync VESA synchronization head, and is externally connected with a 3D synchronous transmitter through a 3D VESA interface, so that the shutter type 3D glasses and the 3D multi-picture splicing processor are correctly synchronized, and a 3D effect is achieved.

It is worth noting that the 3D splicing processor 2 adopts a programmable FPGA as a main video processing chip and an ARM embedded control system, the starting speed is high, the stability is high, and all requirements of customers are realized by a single board integrated analog and digital mixed analog interface.

It should be noted that the 3D stitching processor 2 supports a 4K interface with a 4K input acquisition card, and a resolution of 4K × 2K can be realized with one input. EDID can be edited by DVI, HDMI1.4, HDMI2.0 and HDMI, and the computer is forced to output custom resolution, so that the best effect of point-to-point display is realized.

It is worth noting that the 3D splicing processor 2 is further provided with a GEN-LOCK input/output interface, which supports cascade splicing to achieve a larger resolution.

It should be noted that the 3D stitching processor 2 has a 2D/3D simultaneous display function, and the processing algorithm can select any one or more pictures to play 3D or 2D video on the basis of multiple pictures, thereby realizing simultaneous display of multiple 3D videos or mixed display of 3D videos and 2D videos.

It is worth noting that the 3D splicing processor 2 adopts an open DVI output interface, and can support all mainstream control systems, a common LED display screen, and a common sending card and receiving card only need to be provided with a 3D video processor, so that free switching from 2D to 3D can be realized.

It is worth noting that the 3D splicing processor 2 is also connected with the computer end through a data interface of a hardware plug-in method, so that the 3D splicing processor, the computer end and simulation software are synchronously linked, and the problem of image turning is fundamentally solved.

It is worth noting that the 3D splicing processor 2 adopts a modular structure, the hardware adopts a modular design, and the input acquisition card, the input card, the output card, the control card, the data exchange back plate, the fan and the power supply are all modular. The customer can flexibly customize the corresponding card according to the requirement, and the corresponding component can be directly replaced when the fault occurs.

In addition, the 3D splicing processor 2 adopts a back board exchange technology, ensures that each input/output channel exclusively shares a data broadband, can transmit all parallel data at any time in parallel, and ensures real-time display of signals without frame loss.

The 3D synchronous transmitter 3 of the embodiment adopts an Optoma-TX-3Dsync24G VESA transmitter, and the specification parameters are as follows:

1. frequency: 2.4GH;

2. power: 20to +10dBm;

3. emission range: not less than 80 m;

4. recognition: a common Band ISM;

3D glasses: optoma-TX-ZF2300 shutter 2.4G Bluetooth

Specification parameters are as follows:

3D technology: actively charged shutter glasses;

lens type: a liquid crystal;

the synchronization method comprises the following steps: 2.4G radio frequency;

refresh frequency: 240Hz;

battery life: not less than 75 hours;

the power supply mode comprises the following steps: 5V USB/Li-on 120mAh;

viewing angle: 115 °;

light transmittance: 40 percent;

a mirror frame: sealing and washing with water;

the automatic power-off function saves resources;

2.4GHz radio frequency synchronization can avoid interference from other equipment;

the 3D stitching processor of the present embodiment can configure 80 output channels at most, and can carry a large LED screen with a resolution of 10400 ten thousand in a 3D mode.

This embodiment adopts 3D concatenation treater to realize 3D and shows, and is simple and easy, compatible mainstream LED control system, need not to carry out any change to traditional LED display screen, can realize arbitrary full-color LED display screen "second with the help of a 3D concatenation treater and become" 3D screen.

This embodiment adopts open DVI interface output 120 HZ's 3D signal, with the help of ordinary computer, ordinary card, ordinary receiving card and ordinary LED display screen of sending, need not to change the system scheme, need not additionally to increase the cost. Only 2 technical problems need to be noticed, namely, a common sending card and a common receiving card which can support 120HZ input are adopted on the display screen, and the loading width of the receiving card is reduced by half compared with that of the common display screen.

The 3D splicing processor of the specific embodiment adopts a plate-card type design and can be expanded at will. At present, the maximum size is 36 routes of sending card output, and any display screen within 3800 ten thousand resolution can be met, so that the problem that the display screen is too large to realize or expensive is completely avoided.

In the 2D mode of the present embodiment, the 3D mode is switched by one key; the same screen can be used for 3D display and can also be used as a common LED display screen, and the instant switching does not need complex configuration. In addition, a plurality of 3D windows with multiple pictures or mixed display of the 3D windows and the 2D windows are realized simultaneously; the problem of super-large input resolution of a 3D large screen is perfectly solved; by adopting the 2.4GH 3D synchronizer and the glasses, the synchronization distance reaches 50 meters, and the defects of short distance, barrier fear and the like of the infrared glasses are avoided.

The specific embodiment supports various 3D materials, and the left-right format, the up-down format and the frame continuous format are not limited; the OSD character superposition function is supported, and characters or pictures can be added to the image; supporting an authorized encryption function; the equipment can normally work only by primary authorization or secondary authorization, and the equipment is automatically locked after the authorization time is set to expire and cannot work. And additional functions of other splicers are supported, such as functions of brightness quick adjustment, multi-scene seamless switching, scene polling, timing switching, signal source cutting, signal source state detection and the like.

The specific implementation mode supports an advanced 3D mode, one path of input is connected into a 2D left eye signal, the other path of input is connected into a 2D right eye signal, and then the splicer performs superposition processing to complete 3D synthesis and output a 3D video effect. 3D materials do not need to be manufactured, and 3D binocular shooting live broadcast can be achieved.

The 3D image splicing processor of the specific embodiment provides a simple, convenient and friendly customizable unified control application management interface, and is more flexible and humanized to operate. The 3D stereoscopic display splicing display wall can be conveniently and rapidly controlled and operated visually.

Example 1: referring to FIG. 2, a project large screen uses 16 large issue cards, a single cassette tape carrier 384 x 1944; one main display card server and one standby display card server are used; the splicer is provided with 28 paths of input and 36 paths of output; the 3D scheme is a continuous frame 3D solution, and the reason for applying the continuous frame 3D scheme in the project is that 3D materials of customers are modeled by modeling software such as Siemens NX and the like; the 3D scheme of consecutive frames requires 120 frames output by the graphics card and 120 frames input and output by the 3D splicer. The project also uses a pre-monitoring function, namely a double pre-monitoring scheme of hardware pre-monitoring and software pre-monitoring, the hardware pre-monitoring is used as a standby, and when the software pre-monitoring has problems, the hardware pre-monitoring can be started immediately. Both hardware pre-monitoring and software pre-monitoring can be realized by two 4K liquid crystal displays in a control room, the playing state of a large screen can be monitored in real time, and the real-time states of other paths of input signals can also be monitored on the liquid crystal displays.

Example 2; referring to fig. 3, in the field of exhibition and school education, a multi-picture and multi-window reality application is required, for example, a 3D material window is displayed on the left side of the figure, 3D video or 3D teaching software is played, and a ppt explanation is played on the right side of the figure.

Example 3: referring to fig. 4, the nvidia video card outputs a continuous frame (120 HZ) slice source, which is input through the HDMI1.4 or DP interface, thereby achieving a better 3D effect.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a full-color LED display screen realizes system that 3D shows, a serial communication port, including LED display screen (1), 3D concatenation treater (2), 3D synchrotron (3) and a plurality of 3D glasses (4), the output of 3D concatenation treater (2) links to each other with LED display screen (1), the 3D VESA interface and the 3D synchrotron (3) of 3D concatenation treater (2) link to each other, 3D synchrotron (3) pass through the bluetooth with 3D glasses (4) and are connected.

2. The system for realizing 3D display of the full-color LED display screen according to claim 1, wherein the 3D glasses (4) adopt active charging shutter 2.4G Bluetooth 3D glasses.

3. The system for realizing 3D display of the full-color LED display screen according to claim 1, wherein a 3D sync VESA synchronization head is arranged in the 3D splicing processor (2), and a 3D synchronization emitter is externally connected with a 3D VESA interface, so that the shutter type 3D glasses and the 3D multi-picture splicing processor are correctly synchronized, and a 3D effect is achieved.

4. The system for realizing 3D display of the full-color LED display screen according to claim 1, wherein the 3D splicing processor (2) adopts a programmable FPGA as a video processing chip and an ARM embedded control system.

5. The system for realizing 3D display of the full-color LED display screen according to claim 1, wherein the 3D splicing processor (2) adopts a 4K input acquisition card to support a 4K interface, and 4 Kx 2K resolution can be realized by one input; EDID can be edited by DVI, HDMI1.4, HDMI2.0, DP1.2 and HDMI, and the computer is forced to output the customized resolution, so as to realize the best effect of point-to-point display.

6. The system for realizing 3D display of the full-color LED display screen according to claim 1, wherein the 3D splicing processor (2) is further provided with a GEN-LOCK input/output interface to support cascade splicing and achieve a larger resolution.

7. The system for realizing 3D display of a full-color LED display screen according to claim 1, wherein the 3D stitching processor (2) has a 2D/3D simultaneous display function, and the adopted processing algorithm can select any one or more pictures to play 3D or 2D video on the basis of multiple pictures, so as to realize simultaneous display of multiple paths of 3D videos or mixed display of 3D videos and 2D videos.

8. The system for realizing 3D display of the full-color LED display screen according to claim 1, wherein the 3D splicing processor (2) adopts an open DVI output interface, and can support all mainstream control systems and common LED display screens, and the common sending card and receiving card can realize free switching from 2D to 3D only by matching with one 3D video processor.

9. The system for realizing 3D display of the full-color LED display screen according to claim 1, wherein the 3D splicing processor (2) is further connected with the computer end through a data interface of a hardware plug-in method, so that the 3D splicing processor, the computer end and simulation software are synchronously linked, and the problem of image turning is fundamentally solved.

10. The system for realizing 3D display of the full-color LED display screen according to claim 1, wherein the 3D splicing processor (2) adopts a modular structure, the hardware adopts a modular design, and the input acquisition card, the input card, the output card, the control card, the data exchange back plate, the fan and the power supply are all modular; the 3D splicing processor (2) adopts a back plate exchange technology.

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