CN101814269A - Method and device for simultaneously displaying multiple images in real time on full color LED dot matrix - Google Patents
Method and device for simultaneously displaying multiple images in real time on full color LED dot matrix Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/10—Mixing of images, i.e. displayed pixel being the result of an operation, e.g. adding, on the corresponding input pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/02—Graphics controller able to handle multiple formats, e.g. input or output formats
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/12—Frame memory handling
- G09G2360/121—Frame memory handling using a cache memory
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/20—Details of the management of multiple sources of image data
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Abstract
The invention relates to a method and a device for simultaneously displaying multiple images in real time on a full color LED dot matrix. The method of the invention comprises the following steps: a multi-image dynamic image real-time control unit superposes external video signals with different formats (high definition/VGA/video signals) into one digital image signal in real time; the multi-image dynamic image real-time control unit receives the externally input video signals, completes superposing processing in real time, synthesizes one digital image signal and simultaneously transmits the digital image signal to different synchronization control display units through digital image transmission buses; the digital image signal superposed in real time is simultaneously transmitted to a plurality of the synchronization control display units through the digital image transmission buses; and complete synchronization of digital image signals output by the different synchronization control display units is realized by image block capturing, image synchronization adjusting and image coding output.
Description
Technical field
Show the multiple images in real time signal that multichannel is different simultaneously on the full color LED dot matrix that the present invention is applied to need many transmission cards to support.
Background technology
The price of full-color LED display screen constantly descends, the direct spacing of dot matrix was close more originally, by the past P6 of original P12, the P4 development, along with dwindling of LED point distance, needed LED dot matrix quantity was increasing when unit area showed, no matter indoor still outdoor LED shows, develop towards overlength, super direction wide, the super large dot matrix, the LED display curtain that is made of point battle array casing is gradually toward 2048 * 1536, even the development of higher dot matrix, horizontal dot matrix superelevation 10000 points, vertically dot matrix is also greater than 1536 points.The demonstration of the full-color screen of LED mainly by LED display, send computing machine and four parts of signal broadcast source that card, some receiving cards and control shows and form.Along with the development of the full-color screen of LED, the ultimate system that constitutes the LED demonstration sends the some receiving cards of card connection by one and constitutes to many more receiving cards of transmission card connection.When needs were realized the full-color demonstration of Real-time and Dynamic with the LED giant-screen, the performance requirement that display screen is sent card processing and transmission data can become very high.In the evolution of super large dot matrix LED display curtain, the LED display curtain that tradition is supported based on the mode of computer+transmission card, the signal broadcast source is installed on computers, adopt LED studio software to play, the corresponding dot matrix of coming by transmission card system acquisition DVI signal transmits, the LED lamp of receiving system reception rear drive correspondence is realized the normal demonstration of picture,. along with the LED dot matrix is increasing, the LED screen of a super large often needs many transmission cards to come portions acquired signal source, mode by the computer cascade, situation is gathered, the realization video picture is sent in segmentation. the mode that this driving super large point matrix LED shows, and possess a lot of limitations and comprise, mainly show:
I. traditional demonstration support pattern when realizing that the super large dot matrix shows, needs multiple computers to support many transmission cards to realize respectively, system adopts cascade system to carry out, connect complexity, have only a computer system crash to occur, cause this display screen normally not move.
Ii. need complicated system parameter setting between different computers and the transmission card,, after the refitting system, need debug and be provided with display system again in case computer is poisoned.
Iii. can not carry out the real-time processing of unlike signal simultaneously, can not carry out showing in real time synchronously, even realized that perhaps its method is also very complicated to unlike signal.
Iv. can realize that the different signal source of multichannel sends demonstration on the card at many simultaneously, can only realize the video picture of one road signal.
V. in the time of can not satisfying jumbotron LED video picture, under different situations, the preset function of different displayed scene patterns.
Vi. if realize the video pictures simultaneously of a plurality of signals, undertaken by the mode that adopts the computer collection, all signals of computer collection can only show on the transmission card that this machine is supported like this, can not stride to send the card demonstration.
Summary of the invention
The method and the device that the purpose of this invention is to provide a kind of simultaneously displaying multiple images in real time on full color LED dot matrix, can realize: 1. the video signal segmentation that solves all kinds of different-formats adopts DVI to superpose in real time to show output simultaneously, realizes crossing over many and sends card and show complete LED pictures.2 solve the asynchronous problem of demonstration of different LED display unit.
Realize that method of the present invention is: the method for simultaneously displaying multiple images in real time on full color LED dot matrix comprises that control in real time of many pictures dynamic image and synchro control show, comprising:
A. with different-format (high definition/VGA/ vision signal) vision signal of outside through the real-time control module of many pictures dynamic image, realize being superposed in real time a way word image signal; Many pictures dynamic image real-time controller receives the vision signal of outside input, finishes real-time overlap-add procedure, and a synthetic way word image signal is transferred to different synchro control display units simultaneously by the Digital Image Transmission bus;
B. will be superposed to one tunnel data image signal in real time and send a plurality of synchro control display units simultaneously to through the Digital Image Transmission bus, through image block extracting, image synchronization adjustment, picture coding output, realize that the data image signal of different synchro control display unit outputs is synchronous fully.
This method also comprises:
Described synchro control demonstration comprises that the image block placement unit receives the data image signal of the real-time control module of many pictures dynamic image, grasp the digital picture of corresponding size according to software setting and give synchronous adjustment unit, adjustment unit receives the digital picture that image block grasps synchronously, the output time of the output digital image signal of this unit is differentiated and adjusted with reference to the synchro control of the data image signal of importing to the standard that is adjusted into, the data image signal of realizing different synchro control display unit outputs is synchronous fully, is that standard DVI signal outputs to by sending the LED display that card/receiving card system supports through picture coding output unit code synchronism adjustment unit data image signal again.
Described employing display frequency control technology, the output synchronizing signal that realizes different display units is accurately consistent, specifically implemented to be divided into two steps and finish the first step: many pictures of the strict locking of the output of different synchronous indicative control units dynamic image is controlled the field sync signal of the data image signal of output in real time; Second step: the field synchronization of different indicative control unit outputs postpones according to the corresponding adjustment in the position of input signal; Wherein, genlocing method in first step midfield comprises following three kinds of mode: a, when the input field synchronization arrives, and output field changes synchronously immediately; B, when the input field synchronization arrives, output field is chosen interval time the shortest point synchronously and is changed in previous row that shows or back delegation; C, when the input field synchronization arrives, output field variation after current line has shown synchronously.
Realize that device of the present invention is: this device comprises many pictures dynamic image real-time controller and synchro control display unit, wherein many pictures dynamic image real-time controller receives the vision signal of outside input and is connected with the synchro control display unit through transfer bus, wherein the synchro control display unit comprises image block placement unit, synchronous adjustment unit and picture coding output unit, and wherein transfer bus is connected with the picture coding output unit through image block placement unit, synchronous adjustment unit.
This device also comprises:
Described image block placement unit mainly is made up of with the video signal input module that is attached thereto one 80186 controller, wherein 80186 controllers receive outside control information the data image signal that corresponding register comes accurate cutting input are set, the register that is provided with comprises the size of cutting, positional information, video signal input module receives by CLK, DEN, HS, VS, RIN[7:0], GIN[7:0], BIN[7:0] data image signal formed, pass through DEN, HS, the VS synchronous signal frequency is searched the resolution that corresponding pattern list is judged the input digital image signal.
Described synchronous adjustment unit mainly is made up of a DSP processing module and two storeies that are attached thereto, finish adjustment, the output accurately control synchronously of the buffer memory of image, big or small position, adjusted image is by CLKIN, IVS, IHS, IDEN synchronizing clock signals, INBE[2:9], INGE[2:9], INRE[2:9] picture signal outputs to the picture coding output unit.
Described picture coding output unit comprises that a TTL changes the DVI chip, receive the TTL data image signal of synchronous adjustment unit output, this signal comprises CLKIN, IVS, IHS, IDEN synchronizing clock signals, INBE[2:9], INGE[2:9], INRE[2:9] picture signal, being converted to the TMDS signal by TFP is D_TX2p, D_TX2m, D_TX1p, D_TX1m, D_TX0p, D_TX0m, four pairs of differential signals of D_TXCp, D_TXCm are exported to the LED screen display by P3 DVI-I seat.
The beneficial effect that the present invention has: the vision signal segmentation on the extra-large LED display unit that realizes a plurality of different-formats reaches the different transmission card driving LED dot matrix of leap and shows synchronously in real time by the output of standard DVI form.
Description of drawings
Fig. 1 is a whole theory diagram of the present invention.
Fig. 2 is a software processes process flow diagram of the present invention.
Fig. 3 is image block placement unit circuit 21 schematic diagrams of Fig. 1.
Fig. 4 is synchronous adjustment unit 22 circuit theory diagrams of Fig. 1.
Fig. 5 is picture coding output unit 23 circuit theory diagrams of Fig. 1
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
The present invention is made up of many pictures dynamic image real-time controller 1 and synchro control display unit 2 (the present invention can have a plurality of synchro control display units according to actual needs).
Many pictures dynamic image real-time controller 1 receives outside different-format vision signal (comprising high definition/VGA/ vision signal) and is superposed to a way word image signal in real time, transmit a plurality of synchro control display units (composition of different synchro control display units is identical with principle of work, chooses wherein one tunnel explanation below) simultaneously by the Digital Image Transmission bus.Synchro control display unit 2 comprises image block placement unit 21, synchronous adjustment unit 22, picture coding output unit 23.Image block placement unit 21 receives the data image signal of many pictures dynamic image real-time controller 1, grasp the digital picture of corresponding size according to software setting and give synchronous adjustment unit 22, adjustment unit 22 receives image block placement unit 21 synchronously, the output time of the output digital image signal of this unit is differentiated and adjusted with reference to the synchro control of the data image signal of importing to the standard that is adjusted into, make the data image signal of different synchro control display unit outputs synchronous fully, picture coding output unit 23 code synchronism adjustment units 22 data image signals are that standard DVI signal outputs to LED display.
Synchro control display unit 2 comprises image block placement unit 21, synchronous adjustment unit 22, picture coding output unit 23.Image block placement unit 21 receives the data image signal of many pictures dynamic image real-time controller 1, grasp the digital picture of corresponding size according to software setting and give synchronous adjustment unit 22, adjustment unit 22 receives image block placement unit 21 synchronously, the standard that is adjusted into is differentiated the output time of also adjusting the output digital image signal of this unit with reference to the synchro control of the data image signal of importing, makes the data image signal of different synchro control display units outputs synchronous fully.
Principle of work
Whole formation comprises many pictures dynamic image real-time controller 1, multichannel synchro control display unit 2 two large divisions as shown in Figure 1.
The workflow of critical piece of the present invention: many pictures dynamic image real-time controller 1 receives the vision signal of outside input, finish real-time overlap-add procedure, a synthetic way word image signal is transferred to different synchro control display units simultaneously by the Digital Image Transmission bus, and synchro control display unit 2 comprises image block placement unit 21, synchronous adjustment unit 22, picture coding output unit 23.Image block placement unit 21 receives the data image signal of many pictures dynamic image real-time controller 1, grasp the digital picture of corresponding size according to software setting and give synchronous adjustment unit 22, adjustment unit 22 receives the signal of image block placement unit 21 synchronously, the output time of the output digital image signal of this unit is differentiated and adjusted with reference to the synchro control of the data image signal of importing to the standard that is adjusted into, make the data image signal of different synchro control display unit outputs synchronous fully, picture coding output unit 23 code synchronism adjustment units 22 data image signals are that standard DVI signal outputs to LED display.
Image block placement unit 21 major functions are the data image signals that receive many pictures dynamic image real-time controller 1, give the back one cell processing according to the relevant position image of the extracting size cutting whole number picture signal of software setting.
Image block placement unit 21 is made up of controller, video signal input module two parts that strengthen 80186 frameworks.The video signal input module of image block placement unit 21 receives by CLK, DEN, HS, VS, RIN[7:0], GIN[7:0], BIN[7:0] data image signal formed, judge the resolution of input digital image signal by DEN, HS, VS synchronous signal frequency by searching corresponding pattern list, 80186 controllers receive outside control information the data image signal that corresponding register comes accurate cutting input are set, the register that is provided with comprises the size of cutting, information such as position.
Adjustment unit 22 is made of a high performance DSP processing module synchronously, and the storer of outside two high speeds of cooperation is finished the buffer memory of image, the adjustment of big or small position, and output is accurately controlled synchronously.DSP processing module memory bus width is 32 RMD[31:0], overall bandwidth 6.4Gbit/s.
Adjustment unit 22 adopts unique display frequency control technology synchronously, realizes that the output synchronizing signal of different display units is accurately consistent.Concrete enforcement is finished in two steps, the field sync signal of the data image signal of many pictures of the strict locking of the output of the synchronous indicative control unit that the first step is different dynamic image real-time controller 1 output.Second step field synchronization of different indicative control unit outputs postpones according to the corresponding adjustment in the position of input signal.This device of first step midfield genlocing method adopts and can adopt three kinds of modes to finish, and 1, when the input field synchronization arrives, output field changes synchronously immediately.2, when the input field synchronization arrives, output field is chosen the shortest some variation interval time synchronously in previous row that shows or back delegation.3, when the input field synchronization arrived, output field changed after current line has shown synchronously.The mode of these three kinds of locking frequencies respectively has relative merits, can be provided with according to actual needs.Second step need be based upon on the first step basis, must guarantee that the output frequency of each synchronous indicative control unit is tangible phase differential, need be controlled within the time that shows delegation.Three kinds of frequency locking modes above adopting can satisfy this requirement fully, because the position that input digital image is grasped of each synchronous indicative control unit is different, Shu Chu time also wants corresponding different like this, could guarantee to output to and in same frame, form a complete picture on each led display unit, so need be, promptly adjust the output field relative time delay of (IVS) and the field synchronization (VS controls extracting 21 in real time at many pictures of image dynamic image) of input digital image synchronously to the output of delaying time of the unit of viewing area below general image.Adjusted image is by CLKIN, IVS, IHS, IDEN synchronizing clock signals, INBE[2:9], INGE[2:9], INRE[2:9] etc. picture signal output to picture coding output unit 23.
Picture coding output unit 23 changes the DVI chip by a TTL to be formed, and the LED screen display is given in the coding output of whole number image.What this unit adopted is TFP410 special image conversion chip, receive the TTL data image signal of synchronous adjustment unit 22 outputs, this signal comprises CLKIN, IVS, IHS, IDEN synchronizing clock signals, INBE[2:9], INGE[2:9], INRE[2:9] etc. picture signal.Being converted to the TMDS signal by TFP is D_TX2p, D_TX2m, D_TX1p, D_TX1m, and D_TX0p, D_TX0m, four pairs of differential signals of D_TXCp, D_TXCm are by the output of P3 DVI-I seat.
Claims (7)
1. the method for a simultaneously displaying multiple images in real time on full color LED dot matrix comprises that control in real time of many pictures dynamic image and synchro control show, is characterized in that comprising the following steps:
A. with different-format (high definition/VGA/ vision signal) vision signal of outside through the real-time control module of many pictures dynamic image, realize being superposed in real time a way word image signal; Many pictures dynamic image real-time controller receives the vision signal of outside input, finishes real-time overlap-add procedure, and a synthetic way word image signal is transferred to different synchro control display units simultaneously by the Digital Image Transmission bus;
B. will be superposed to one tunnel data image signal in real time and send a plurality of synchro control display units simultaneously to through the Digital Image Transmission bus, through image block extracting, image synchronization adjustment, picture coding output, realize that the data image signal of different synchro control display unit outputs is synchronous fully.
2. the method for simultaneously displaying multiple images in real time on full color LED dot matrix as claimed in claim 1, it is characterized in that described synchro control demonstration comprises that the image block placement unit receives the data image signal of the real-time control module of many pictures dynamic image, grasp the digital picture of corresponding size according to software setting and give synchronous adjustment unit, adjustment unit receives the digital picture that image block grasps synchronously, the standard that is adjusted into is differentiated the output time of also adjusting the output digital image signal of this unit with reference to the synchro control of the data image signal of importing, realizes that the data image signal of different synchro control display units outputs is synchronous fully.
3. the method for simultaneously displaying multiple images in real time on full color LED dot matrix as claimed in claim 1 or 2, it is characterized in that described employing display frequency control technology, the output synchronizing signal that realizes different display units is accurately consistent, specifically implemented to be divided into two steps and finish the first step: many pictures of the strict locking of the output of different synchronous indicative control units dynamic image is controlled the field sync signal of the data image signal of output in real time; Second step: the field synchronization of different indicative control unit outputs postpones according to the corresponding adjustment in the position of input signal; Wherein, genlocing method in first step midfield comprises following three kinds of mode: a, when the input field synchronization arrives, and output field changes synchronously immediately; B, when the input field synchronization arrives, output field is chosen interval time the shortest point synchronously and is changed in previous row that shows or back delegation; C, when the input field synchronization arrives, output field variation after current line has shown synchronously.
4. realize the device of the simultaneously displaying multiple images in real time on full color LED dot matrix method of claim 1, it is characterized in that comprising many pictures dynamic image real-time controller and synchro control display unit, wherein many pictures dynamic image real-time controller receives the vision signal of outside input and is connected with the synchro control display unit through transfer bus, wherein the synchro control display unit comprises image block placement unit, synchronous adjustment unit and picture coding output unit, and wherein transfer bus is connected with the picture coding output unit through image block placement unit, synchronous adjustment unit.
5. the device of simultaneously displaying multiple images in real time on full color LED dot matrix as claimed in claim 4, it is characterized in that described image block placement unit mainly is made up of one 80186 controller and the video signal input module that is attached thereto, wherein 80186 controllers receive outside control information the data image signal that corresponding register comes accurate cutting input are set, the register that is provided with comprises the size of cutting, positional information, video signal input module receives by CLK, DEN, HS, VS, RIN[7:0], GIN[7:0], BIN[7:0] data image signal formed, pass through DEN, HS, the VS synchronous signal frequency is searched the resolution that corresponding pattern list is judged the input digital image signal.
6. the device of simultaneously displaying multiple images in real time on full color LED dot matrix as claimed in claim 4, it is characterized in that described synchronous adjustment unit mainly is made up of a DSP processing module and two storeies being attached thereto, finish adjustment, the output accurately control synchronously of the buffer memory of image, big or small position, adjusted image is by CLKIN, IVS, IHS, IDEN synchronizing clock signals, INBE[2:9], INGE[2:9], INRE[2:9] picture signal outputs to the picture coding output unit.
7. the device of simultaneously displaying multiple images in real time on full color LED dot matrix as claimed in claim 4, it is characterized in that described picture coding output unit comprises that a TTL changes the DVI chip, receive the TTL data image signal of synchronous adjustment unit output, this signal comprises CLKIN, IVS, IHS, the IDEN synchronizing clock signals, INBE[2:9], INGE[2:9], INRE[2:9] picture signal, being converted to the TMDS signal by TFP is D_TX2p, D_TX2m, D_TX1p, D_TX1m, D_TX0p, D_TX0m, D_TXCp, four pairs of differential signals of D_TXCm are exported to the LED screen display by the P3DVI-I seat.
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| CN 201010152623 CN101814269A (en) | 2010-04-16 | 2010-04-16 | Method and device for simultaneously displaying multiple images in real time on full color LED dot matrix |
| PCT/CN2010/073326 WO2011127673A1 (en) | 2010-04-16 | 2010-05-28 | Method for displaying real-time multiple pictures on full-color led dot matrix and device thereof |
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| CN 201010152623 CN101814269A (en) | 2010-04-16 | 2010-04-16 | Method and device for simultaneously displaying multiple images in real time on full color LED dot matrix |
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