CN104935840B - The captions rolling display methods and system of a kind of mosaic display screen - Google Patents
The captions rolling display methods and system of a kind of mosaic display screen Download PDFInfo
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Abstract
The invention discloses the captions rolling display methods and system of a kind of mosaic display screen, the caption information and its parameter information to be shown inputted by receiving user, the caption information and parameter information is converted into corresponding dot array data, and be sent to master control borad；Master control borad receives the dot array data and stored, the parameter information is obtained according to the dot array data, corresponding continuous multiple frames dot matrix subdata to be shown is chosen according to mosaic display screen size and the parameter information successively from the dot array data, is sent to output board corresponding to mosaic display screen successively；Each frame lattice subdata corresponding to it is converted to corresponding subtitle image data and carries out picture with vedio data to be shown and is superimposed by output board successively, is sent to corresponding mosaic display screen successively and is shown, to complete the scrolling display of captions；The roll titles for realizing the real-time vector of high definition is realized, brings and greatly facilitates.
Description
Technical field
The present invention relates to the captions rolling display side of tiled display technical field, more particularly to a kind of mosaic display screen
Method and system.
Background technology
With in display terminal industry, word is rolled on the display devices such as single monitor, display apparatus for commercial use, LED large-size screen monitors
Curtain superposition is a very practical function, facilitates client to issue real time information.But LCD（Liquid Crystal Display
, liquid crystal display）In large screen splicing system, based on the subtitle superposition function of separate unit concatenation unit realization, often due to display word
Body is small, and effect is poor, needs to realize using external splicing controller across the problems such as screen rolling uniformity bad regulation, and many
The scheme of controller is not because display font definition is high or have the problems such as more limitation, and often client is still ready
Additional LED dot matrix screens realize Subtitle Demonstration on LCD combinations, adds additional unnecessary expense.
It is to read dot-matrix using tradition that the existing controller for realizing large screen splicing roll titles, which is based on Embedded framework,
The method of storehouse data, display is overlapped after amplification with image, the captions definition that this scheme is shown is not high, is spelled using large-size screen monitors
The crenellated phenomena of display larger font is connect than more serious.Based on PCI（Peripheral Component Interconnect, it is fixed
The standard of adopted local bus）Industrial control type splicing controller can realize the higher Subtitle Demonstration of definition, but this framework
For controller because Video processing way is few, the reason such as on the high side has logged out mainstream market.Because tiled display character has
The features such as font size requires high, and Overlapping display data volume is big, realizes that difficulty and cost are all difficult to balance, existing real based on FPGA
The subtitle superposition of existing vector level is also based only on single channel image, the small size character adding applied to simple channel information labeling.
The captions rolling displaying scheme of existing mosaic display screen, cost is higher, and captions definition is low, and inconvenience is brought to user.
Therefore, prior art has yet to be improved and developed.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of captions rolling display methods of mosaic display screen and is
System, it is intended to solve the problem of existing mosaic display screen captions rolling displaying scheme cost is higher, and captions definition is low.
The technical proposal for solving the technical problem of the invention is as follows：
A kind of captions rolling display methods of mosaic display screen, wherein, comprise the following steps：
The caption information and its parameter information to be shown of user's input is received, the caption information and parameter information are turned
Corresponding dot array data is changed to, and is sent to master control borad；
Master control borad receives the dot array data and stored, and the parameter information is obtained according to the dot array data, according to spelling
Connect display screen size and the parameter information and choose corresponding continuous multiple frames point a period of time to be shown successively from the dot array data
Data, continuous each frame lattice subdata is sent to by output board corresponding to mosaic display screen by chip matrix successively；
Each frame lattice subdata corresponding to it is converted to corresponding subtitle image data by output board successively, output board according to
It is secondary to be superimposed each frame subtitle image data corresponding to it with vedio data progress picture to be shown, and be sent to successively
Corresponding mosaic display screen is shown, to complete the scrolling display of captions.
The captions rolling display methods of described mosaic display screen, wherein, the parameter information includes：Display font is big
Small, font color and captions rolling speed.
The captions rolling display methods of described mosaic display screen, wherein, the word to be shown for receiving user's input
Curtain information and its parameter information, are converted to corresponding dot array data, and be sent to master control by the caption information and parameter information
Plate, specifically include：
Computer receives the caption information of the desired display of user's input, and display font size, the font that user is set
Color and captions rolling velocity information；
According to the caption information, display font size, font color and captions rolling velocity information, read on computer
The vector font library of storage, dot array data corresponding to generation；
The dot array data is sent to master control borad.
The captions rolling display methods of described mosaic display screen, wherein, the master control borad receives the dot array data simultaneously
Storage, the parameter information is obtained according to the dot array data, according to mosaic display screen size and the parameter information from described
Corresponding continuous multiple frames dot matrix subdata to be shown is chosen in dot array data successively, will continuous each frame point by chip matrix
A period of time data are sent to output board corresponding to mosaic display screen successively, specifically include：
Master control borad receives the dot array data, and is stored in the memory on master control borad；
Master control borad parses to the dot array data, obtains font color and the captions rolling velocity information；
Chosen successively from the dot array data according to the total pixel of the width of mosaic display screen and the captions rolling speed
Continuous multiple frames correspond to the dot matrix subdata of width；
Continuous each frame lattice subdata is sent to by output board corresponding to mosaic display screen by chip matrix successively.
The captions rolling display methods of described mosaic display screen, wherein, the output board successively will be each corresponding to it
Frame lattice subdata is converted to corresponding subtitle image data, output board successively by each frame subtitle image data corresponding to it with
Vedio data to be shown carries out picture superposition, and is sent to corresponding mosaic display screen successively and shows, to complete captions
Scrolling display, specifically include：
The output board continuous multiple frames dot matrix subdata that receiving matrix chip sends over successively, the data for judging to receive are
No is dot matrix subdata corresponding to captions to be shown, if it has, then the dot matrix subdata is converted into corresponding subtitling image
Data；
After each frame subtitle image data is superimposed with vedio data progress picture to be shown successively, and send extremely
Corresponding mosaic display screen is shown, to realize that captions are scrolled with the captions rolling speed on mosaic display screen.
A kind of captions rolling display system of mosaic display screen, wherein, including：
Caption information obtains and sending module, for receiving the caption information to be shown and its parameter letter of user's input
Breath, is converted to corresponding dot array data, and be sent to master control borad by the caption information and parameter information；
Dot array data chooses module, for receiving the dot array data by master control borad and storing, according to the dot matrix number
According to the parameter information is obtained, the selection pair successively from the dot array data according to mosaic display screen size and the parameter information
Continuous multiple frames dot matrix subdata to be shown is answered, continuous each frame lattice subdata is sent to by spelling by chip matrix successively
Connect output board corresponding to display screen；
Module is scrolled, it is corresponding for being successively converted to each frame lattice subdata corresponding to it by output board
Subtitle image data, output board are successively carried out each frame subtitle image data corresponding to it with vedio data to be shown
Picture is superimposed, and is sent to corresponding mosaic display screen successively and is shown, to complete the scrolling display of captions.
The captions rolling display system of described mosaic display screen, wherein, the parameter information includes：Display font is big
Small, font color and captions rolling speed.
The captions rolling display system of described mosaic display screen, wherein, the caption information obtains and sending module, bag
Include：
Caption information acquiring unit, for receiving the caption information for the desired display that user inputs by computer, and use
Display font size, font color and the captions rolling velocity information that family is set；
Dot array data generation unit, for according to the caption information, display font size, font color and captions rolling
Velocity information, read the vector font library stored on computer, dot array data corresponding to generation；
Dot array data transmitting element, for the dot array data to be sent into master control borad.
The captions rolling display system of described mosaic display screen, wherein, the dot array data chooses module, including：
Dot array data receiving unit, for receiving the dot array data by master control borad, and it is stored in depositing on master control borad
In reservoir；
Dot array data resolution unit, the dot array data is parsed for master control borad, obtain the font color and
Captions rolling velocity information；
Dot matrix subdata chooses unit, for the total pixel of width according to mosaic display screen and the captions rolling speed from
The dot matrix subdata that continuous multiple frames correspond to width is chosen in the dot array data successively；
Dot matrix subdata transmitting element, for being sent to continuous each frame lattice subdata successively by chip matrix
Output board corresponding to mosaic display screen.
The captions rolling display system of described mosaic display screen, wherein, the scrolling display module, including：
Dot matrix subdata receives and judging unit, continuous for being sended over by output board successively receiving matrix chip
Whether more frame lattice subdatas, the data for judging to receive are dot matrix subdata corresponding to captions to be shown, if it has, then by institute
State dot matrix subdata and be converted to corresponding subtitle image data；
Superposition and display unit, for successively carrying out each frame subtitle image data and vedio data to be shown
After picture superposition, and send to corresponding mosaic display screen and shown, to realize that captions are being spelled with the captions rolling speed
Connect and scrolled on display screen.
The captions rolling display methods and system of a kind of mosaic display screen provided by the present invention, are efficiently solved existing
Mosaic display screen captions rolling displaying scheme cost it is higher, the problem of captions definition is low, treated by receive that user inputs
The caption information and its parameter information of display, the caption information and parameter information are converted into corresponding dot array data, concurrently
Give master control borad；Master control borad receives the dot array data and stored, and the parameter information is obtained according to the dot array data, according to
Mosaic display screen size and the parameter information choose corresponding continuous multiple frames dot matrix to be shown successively from the dot array data
Subdata, continuous each frame lattice subdata is sent to by output board corresponding to mosaic display screen by chip matrix successively；
Each frame lattice subdata corresponding to it is converted to corresponding subtitle image data by output board successively, and output board is right by its successively
The each frame subtitle image data answered carries out picture with vedio data to be shown and is superimposed, and is sent to corresponding spelling successively
Connect display screen to show, to complete the scrolling display of captions；On the premise of few cost is increased, one is provided for splicing controller
Show the value-added functionality of vector roll titles, compared to traditional captions rolling function, have display font super large, definition it is high,
Rolling uniformity is good, the lifting for the comprehensive effects and function such as subtitle font, size, color, transparency are arbitrarily set, realizes
The roll titles of high definition real-time vector is realized, brings and greatly facilitates.
Brief description of the drawings
Fig. 1 is the flow chart of the captions rolling display methods preferred embodiment of mosaic display screen provided by the invention；
Fig. 2 realizes schematic diagram for the captions rolling display methods roll titles of mosaic display screen provided by the invention；
Fig. 3 is the structured flowchart of the captions rolling display system preferred embodiment of mosaic display screen provided by the invention；
Fig. 4 is the structural representation of the captions rolling display system Application Example of mosaic display screen provided by the invention.
Embodiment
The present invention provides a kind of the captions rolling display methods and system of mosaic display screen, to make the purpose of the present invention, skill
Art scheme and advantage are clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should manage
Solution, the specific embodiments described herein are merely illustrative of the present invention, is not intended to limit the present invention.
Referring to Fig. 1, Fig. 1 is the stream of the captions rolling display methods preferred embodiment of mosaic display screen provided by the invention
Cheng Tu, as shown in figure 1, the captions rolling display methods of the mosaic display screen comprises the following steps：
Step S100, receive the caption information and its parameter information to be shown of user's input, by the caption information and
Parameter information is converted to corresponding dot array data, and is sent to master control borad；
Step S200, master control borad receives the dot array data and stored, and obtaining the parameter according to the dot array data believes
Breath, chosen successively from the dot array data according to mosaic display screen size and the parameter information corresponding to be shown continuous more
Frame lattice subdata, continuous each frame lattice subdata is sent to successively by chip matrix defeated corresponding to mosaic display screen
Ejecting plate；
Step S300, each frame lattice subdata corresponding to it is converted to corresponding subtitling image number by output board successively
According to, each frame subtitle image data corresponding to it is carried out picture with vedio data to be shown successively and is superimposed by output board,
And mosaic display screen corresponding to being sent to successively is shown, to complete the scrolling display of captions.
Above-mentioned steps are described in detail with reference to specific embodiment.
In the step s 100, the caption information and its parameter information to be shown of user's input is received, the captions are believed
Breath and parameter information are converted to corresponding dot array data, and are sent to master control borad.Specifically, the parameter information includes：It is aobvious
Show font size, font color and captions rolling speed, and transparency etc..Receive user input caption information to be shown and
Its parameter information, the caption information and parameter information are converted into corresponding dot array data, and are sent to master control borad, specific bag
Include：S110, computer receive the caption information of the desired display of user's input, and display font size, the font that user is set
Color and captions rolling velocity information；S120, according to the caption information, display font size, font color and captions rolling
Velocity information, read the vector font library stored on computer, dot array data corresponding to generation；S130, the dot array data sent out
Give master control borad.
Master control borad, chip matrix, output board, tablet and display screen mentioned in the present invention are existing FPGA architecture
Splicing controller framework, it is prior art.The FPGA controller hardware structure of existing mosaic screen includes master control borad, matrix core
Piece, output board, tablet and display screen.Wherein, the function of tablet is mainly by custom protocol by the vision signal of input
It is converted into high speed serialization video and is streamed to output board, output board mainly passes through FPGA（Field-Programmable Gate
Array, field programmable gate array）The order that sends of master control borad realize to the scaling of multi-channel video signal with being superimposed, finally
Spell shape is connect into various image display pattern by multiple display screens, and this is the basic function of large-screen splicing controller, wherein square
Battle array chip can arbitrarily export all the way by arbitrarily inputting to be switched to all the way, and at most 1 tunnel input signal can be copied into institute
Have in output, be exactly briefly any switching laws for possessing signal and any copy function, its model can be the series such as M21121
Chip.In the prior art, video source enters vedio data to be shown after tablet, chip matrix and output board
Display screen is shown.And master control borad then connection matrix chip, control each output board.These hardware devices are prior art, this
Excessive description is not done in place.
The acquisition of conventional characters overlaying scheme word-base data is that have special character library flash, has national standard Chinese characters in common use point
Battle array character library collection, the information of required character pattern data can be got by reading corresponding address date by encoding of chinese characters table.But by
In limited storage space, the character pattern data of 16*16,32*32,64*64 pixel typically can only be also stored.And in combination（Spell
Connect display screen）Application request is watched at a distance, and font size at least wants 1/4 size of support screen, according to 1920*
The screen of 1080 resolution ratio is exactly at least to need a word to have 960*540 resolution ratio to calculate, if reached by 64*64 interpolation
960*540 resolution ratio, font are fuzzy or zigzag certainly.Big font is shown clearly, then need to swear by reading
Amount character library obtains font information to calculate reduction（Vector font library is a kind of character repertoire for the Vector Message for recording each character.It
General principle be according to certain mathematical modeling, the Stroke decomposition of each character into good various straight defined in mathematical modeling
Line and curve, then write down the parameter of these straight lines and curve.According to specific size when display, further according to note
The parameter recorded draws these lines, just reduces original character）, this mode shortcoming is to calculate relative complex, hands over
More FPGA resource can be taken by every piece of output board processing, increase cost.
Sawtooth is shown to solve traditional scheme super large font, the present invention is using vector font library and is directly obtained by computer terminal
And need issue caption information to be converted into dot array data according to user and splicing equipment is issued to by network.Because roll titles makes
In, the rolling content of display be it is compiled in advance, in this scenario, it may not be necessary to pass through flash chip handle in advance
Commonly used word Vector Message stores, and mosaic screen can all match somebody with somebody a control PC, and the present invention just utilizes the control software at PC ends,
The vector font library under windows is read, the dot array data needed according to the font size that user is set with content generation display, is led to
Cross network and send master control borad to.
In practical application, the method that computer obtains dot array data has many kinds, it can directly read and be sweared under windows
Measure character library, by Program transformation into lattice information, windows font selection control can also be utilized, it would be desirable to Chinese character paint
Display buffer is formed on, directly goes to read corresponding buffering area dot array data, the acquisition of vector dot array data is very ripe,
Do not do it is excessive repeat, it is necessary to should be mentioned that, the transmission problem of dot array data, due to final display be in a manner of progressive scan,
So the data transfer mode got is mode from left to right from top to bottom, while DDR allocation spaces and storage for convenience,
Show character total resolution control for 8 integral multiple, be advantageous to program, such speed of service faster, in addition except each point
0,1 information outside, it is also necessary to transmit the relevant parameters such as a 24bit overall font color information, rolling speed.
In step s 200, master control borad receives the dot array data and stored, and the ginseng is obtained according to the dot array data
Number information, corresponding company to be shown is chosen according to mosaic display screen size and the parameter information successively from the dot array data
Continue more frame lattice subdatas, continuous each frame lattice subdata is sent into mosaic display screen successively by chip matrix corresponds to
Output board.
Specifically, master control borad receives the dot array data, and is stored in the memory on master control borad；Master control borad is to institute
State dot array data to be parsed, obtain font color and the captions rolling velocity information；It is total according to the width of mosaic display screen
Pixel and the captions rolling speed choose the dot matrix subdata that continuous multiple frames correspond to width successively from the dot array data；It is logical
Cross chip matrix and continuous each frame lattice subdata is sent to output board corresponding to mosaic display screen successively.
In practical application, receiving terminal can be greatly reduced in dot array data corresponding to the generated vector fonts in PC ends（Master control
Plate）Operand, but data volume can increase a lot, and with the calculation of a word 960*540 resolution ratio, design only need to show pure color word
Body, i.e., a point 1bit data, a word are exactly 960*540=518.4Kbit, and 1000 words then need 518.4Mbit storage
Space, application scenario does not need power down storage, and master control borad comes with the FPGA for other functions in itself, so of the invention
Selection increases a memory on this master control borad FPGA, for example 1Gbit DDR3, the needs sended over for storing PC ends
The dot array data of display.Then, master control borad parses to the dot array data, obtains font color and the captions rolling speed
Spend information.Master control borad single-chip microcomputer is also responsible for simple decoding and turned in addition to being responsible for parsing and forwarding normal concatenation order
Send out the dot character data that computer control software is sent.Master control borad forwarding data send its FPGA to parallel bus, its
FPGA is isolated the parameter information in data by data resolution module（Including display font size, rolling speed, font color
Deng）, send parameter information to DDR Read-write Catrol modules, effective dot array data of separation enters FIFO and waits DDR write-ins.DDR
Arbitration modules are then responsible for responding the request of data of Read-write Catrol module in turn, write data into（For example above-mentioned DDR3）Or
Person is from memory（For example above-mentioned DDR3）Read.
Then, according to the total pixel of width of mosaic display screen and the captions rolling speed from the dot array data successively
Choose the dot matrix subdata that continuous multiple frames correspond to width；Continuous each frame lattice subdata is sent successively by chip matrix
To output board corresponding to mosaic display screen.Namely DDR read control modules are read every time according to the total pixel of display splicing screen width
The dot array data of one fixed width, data window start-stop address will be read and slided according to default speed, you can make output below
Plate receives the real time data of width rolling.It is one of key point of the present invention herein, is illustrated below：
Assuming that user wants 100 words of display, size, color and the rolling speed of font have been set in computer terminal
It is good.After user inputs this 100 word, dot array data corresponding to computer generation is sent to master control borad.If the width of mosaic display screen
After total pixel is compared with the size of font, it is found that mosaic display screen is at most only able to display 10 words, then then from 100
The dot matrix subdata of 10 words is chosen in the dot array data of word, the dot matrix character data is correspondingly sent to tiled display by master control borad again
Screen is shown.In order to realize effect that captions rolling is shown, master control borad will also be according to captions rolling speed from dot array data
The continuous multiple frames dot matrix subdata of the total pixel of width of corresponding mosaic display screen is chosen, specifically, this is due to tiled display
Screen display diagram seems one by one, then master control borad selects continuous multiple frames dot matrix subdata（The data of 10 words）, that is,
Select data of the multiframe according to 10 words of captions rolling speed scroll.Each frame that master control borad is chosen from the dot array data
10 words of dot matrix subdata are all different, and corresponding 10 words in tiled display screen display are according to captions rolling speed
The word of continuous displacement, so as to different by the caption data shown one by one, against each frame caption data in relation,
Realize visual captions rolling display effect.
In step S300, each frame lattice subdata corresponding to it is converted to corresponding subtitling image by output board successively
Each frame subtitle image data corresponding to it is carried out picture with vedio data to be shown successively and folded by data, output board
Add, and be sent to corresponding mosaic display screen successively and show, to complete the scrolling display of captions.Specifically, output board is successively
Whether the continuous multiple frames dot matrix subdata that receiving matrix chip sends over, the data for judging to receive are that captions to be shown are corresponding
Dot matrix subdata, if it has, then the dot matrix subdata is converted into corresponding subtitle image data；Then, successively will be every
After one frame subtitle image data is superimposed with vedio data progress picture to be shown, and send to corresponding mosaic display screen
It has been shown that, to realize that captions are scrolled with the captions rolling speed on mosaic display screen.
In practical application, to ensure that output board handles the performance of image, the processing of output board increase subtitling image to the greatest extent may be used
It can simplify, workload is transferred on master control borad, it is desirable to which the data that master control borad is sent can intercept very well and convenient generation frame of video
Data, here in the case where normal function output board imaging importing framework is constant, open up a SERDES passage and be used to roll
The multiplexing of captions, first judge data whether roll titles data, then carry out decode logic switching selection, be converted into picture frame
Data are stored in the DDR memory fields of advance passage, and Overlapping display below, which need not be changed, just can be superimposed caption data with picture
Mode Overlapping display.Wherein, SERDES is English SERializer (serializer)/DESerializer (deserializer) letter
Claim.
In order to more preferably illustrate the collaborative work of master control borad and output board, the captions rolling principle of the present invention is further illustrated,
The rolling effect of captions is the different zones image that view picture captions are shown by each moment, caused by consecutive image and time
Rolling effect.
Referring to Fig. 2, as shown in Fig. 2 user need scroll " the glad security protection comprehensive management platform of group " this 10 words, show
Show above combination, combination width is spliced by 3 screens, then is received and stored by row good single by master control borad FPGA
The dot array data that piece machine forwards, certain address mapping relation is formed with DDR according to the captions beam overall of display is high, generates data
Rank addresses, and the data integral multiple that often row pixel number is 8.For master control borad, according to Fig. 2, a->b->Tri- moment of c are slided
Dynamic initial data row address different pieces of information size identical data of taking out show that a, b, c moment, every piece of output board only needed basis
The data for taking fixed block address oneself are numbered, can of continuously getting up in time realizes the effect rolled.So, it is exactly
According to dot matrix subdata corresponding to the width selection of mosaic screen, and selected one by one backward successively according to captions rolling speed
Dot matrix subdata, chosen by the dot matrix subdata of continuous multiple frames and correspond to display, the scrolling display effect of captions can be realized.
The a according to time order and function order as shown in Figure 2, it is tri- moment of b, c, corresponding to choose same length but the different dot matrix of content
Subdata, in tiled display screen display, just realize the scrolling display of captions.
The captions rolling display methods of mosaic display screen provided by the invention, is based particularly on large-screen splicing controller,
The real-time vector roll titles of high definition is realized, on the premise of few cost is only increased, on the splicing device of FPGA architecture
Realize big font, color font is arbitrarily adjustable, the consistent high definition vector roll titles of display synchronism.The stitching portion of FPGA architecture
Reason device is the splicing controller framework of current main flow, can flexibly realize that the video input of any more ways goes out the processing of output,
Splicing device of the invention based on existing FPGA architecture, data throughput capabilities and flexibility using FPGA, propose a kind of
Caption data is centrally stored, and the method Ultra Low Cost of real-time broadcast realizes that mosaic screen shows super large font without sawtooth vector level high definition
Roll titles.
Captions rolling display methods based on above-mentioned mosaic display screen, present invention also offers a kind of word of mosaic display screen
Curtain scrolling display system, referring to Fig. 3, Fig. 3 is preferably real for the captions rolling display system of mosaic display screen provided by the invention
The structured flowchart of example is applied, as shown in figure 3, the captions rolling display system of the mosaic display screen includes：
Caption information obtains and sending module 10, for receiving the caption information to be shown and its parameter letter of user's input
Breath, is converted to corresponding dot array data, and be sent to master control borad by the caption information and parameter information；Specific such as step S100
It is described；
Dot array data chooses module 20, for receiving the dot array data by master control borad and storing, according to the dot matrix
Data obtain the parameter information, are chosen successively from the dot array data according to mosaic display screen size and the parameter information
Corresponding continuous multiple frames dot matrix subdata to be shown, continuous each frame lattice subdata is sent to successively by chip matrix
Output board corresponding to mosaic display screen；Specifically as described in step S200；
Module 30 is scrolled, for being successively converted to each frame lattice subdata corresponding to it correspondingly by output board
Subtitle image data, output board successively enters each frame subtitle image data corresponding to it with vedio data to be shown
Row picture is superimposed, and is sent to corresponding mosaic display screen successively and is shown, to complete the scrolling display of captions；Specific such as step
Described in S300.
Further, the parameter information includes：Display font size, font color and captions rolling speed.
Further, the caption information acquisition and sending module 10, including：
Caption information acquiring unit, for receiving the caption information for the desired display that user inputs by computer, and use
Display font size, font color and the captions rolling velocity information that family is set；
Dot array data generation unit, for according to the caption information, display font size, font color and captions rolling
Velocity information, read the vector font library stored on computer, dot array data corresponding to generation；
Dot array data transmitting element, for the dot array data to be sent into master control borad.
Further, the dot array data chooses module 20, including：
Dot array data receiving unit, for receiving the dot array data by master control borad, and it is stored in depositing on master control borad
In reservoir；
Dot array data resolution unit, the dot array data is parsed for master control borad, obtain the font color and
Captions rolling velocity information；
Dot matrix subdata chooses unit, for the total pixel of width according to mosaic display screen and the captions rolling speed from
The dot matrix subdata that continuous multiple frames correspond to width is chosen in the dot array data successively；
Dot matrix subdata transmitting element, for being sent to continuous each frame lattice subdata successively by chip matrix
Output board corresponding to mosaic display screen.
Further, the scrolling display module 30, including：
Dot matrix subdata receives and judging unit, continuous for being sended over by output board successively receiving matrix chip
Whether more frame lattice subdatas, the data for judging to receive are dot matrix subdata corresponding to captions to be shown, if it has, then by institute
State dot matrix subdata and be converted to corresponding subtitle image data；
Superposition and display unit, for successively carrying out each frame subtitle image data and vedio data to be shown
After picture superposition, and send to corresponding mosaic display screen and shown, to realize that captions are being spelled with the captions rolling speed
Connect and scrolled on display screen.
Referring to Fig. 4, Fig. 4 is the knot of the captions rolling display system Application Example of mosaic display screen provided by the invention
Structure schematic diagram.As illustrated, the hardware of the captions rolling display system of the mosaic display screen includes computer, master control borad, square
Battle array chip, output board, tablet and display screen.Wherein, tablet is used to input vedio data to be shown, and these hardware are equal
For prior art.It should be noted that output board and display screen are not one-to-one relationship, an output board can control multiple
Display screen, this is prior art, is not repeated herein.
As seen from Figure 4, data trend be from computer->Master control borad->Matrix->Output board->Display screen, existing
Only need additionally to increase a piece of DDR3 for data cached in master control borad on FPGA controller framework, computer is mainly responsible for data
Generation, master control borad mainly be responsible for data display control and coding, matrix mainly be responsible for data copy broadcast, output board master
It is responsible for being superimposed for data and video, each several part cooperating can realize the increment work(of vector character superposition on former framework
Energy.
The present invention obtains dot array data by computer, can directly read vector font library under windows, is turned by program
Change lattice information into, can also using windows font selection control, it would be desirable to Chinese character be drawn on display buffer, directly
Connect and read corresponding buffering area dot array data, the acquisition of vector dot array data is very ripe, does not do and excessively repeats.Need
Illustrate, the transmission problem of dot array data, because final display is in a manner of progressive scan, so the data transfer got
Mode is mode from left to right from top to bottom, while DDR allocation spaces and storage for convenience, shows the total resolution of character
The integral multiple controlled as 8 is advantageous to program.
Master control borad is responsible for parsing and forwards normal concatenation order, is also responsible for simple decoding and forwarding computer control
The dot character data that software is sent.In order to reduce the storage burden of every piece of output board, so using the principle of tiled display, make
With master control borad real-time broadcast data, master control borad FPGA passes through SERDES HSSI High-Speed Serial Interfaces（Bandwidth reaches as high as 3.2Gbps）Connect
Enter chip matrix input, every piece of output board is reached by chip matrix replica signal, to complete the broadcast of data.Every piece of output board is only
Need to be shown that the effect of rolling is then by master control borad real-time transform according to the partial data that the numbering of oneself acquirement needs to show
Display data can produce the effect of rolling, in order to ensure that data scroll synchronism across screen, it is only necessary in real-time broadcast number
Mark is updated the data according to providing one in stream after every two field picture is transferred, each screen updates the data mark according to this and shown
Show the renewal of content.
In output board, according to displaying principle, two secondary not homologous imaging importings ensure frame per second, it is necessary to be cached using DDR
And the synchronization of data rate is, it is necessary to data cached in output board, because character data occupies the video input of an output board
Passage, then handled the DDR spaces of that road video originally and can be multiplexed and make data buffer storage, then it is synchronous with original image superposition can
.To ensure that output board handles the performance of image, the processing of output board increase subtitling image is simplified, workload is shifted as far as possible
Onto master control borad, it is desirable to which the data that master control borad is sent can intercept very well and convenient generation video requency frame data, here in normal function
In the case that output board imaging importing framework is constant, the multiplexing that a SERDES passage is used for roll titles is opened up, first judges number
According to whether roll titles data, then carry out the switching selection of decode logic, be converted into picture frame data and be stored in advance passage
DDR memory fields, Overlapping display below need not change just can by caption data in a manner of picture is superimposed Overlapping display.
In practical application, output board is mainly decoded using 8b/10b, 8b/10b decoder modules are mainly responsible for serdes
Passage 8b/10b coded datas reduce, and one of characteristic of 8b/10b codings is to ensure DC balances, can using 8b/10b coded systems
So that " 0 " that sends, " 1 " quantity keep basically identical, continuous " 1 " or " 0 " is no more than 5, i.e., every 5 continuous " 1 " or
One " 0 " or " 1 " are must be inserted into after " 0 ", so as to ensure that signal DC is balanced, DC imbalances will not occur in link time-out, ensure
The correctness of data transfer.The taking-up of data is that each output board is selected according to oneself numbering and corresponding display screen size
Take to the partial data in requisition for display, be subsequently sent to corresponding display screen and shown.How to be selected on each output board
Corresponding data are taken, this has been carried out in existing mosaic display screen video playback, does not do excessive description herein.Actually should
Used time, the size of each display screen of mosaic display screen is identical, therefore by data mean allocation.Work as mosaic display screen
Each display screen it is not of uniform size when, data distribution can correspondingly be carried out according to the size of each display screen.
In summary, the captions rolling display methods and system of a kind of mosaic display screen provided by the invention, for large-size screen monitors
Curtain splicing application, is proposed a set of from PC->Splicing equipment->Display unit solves method, using storing real-time broadcasting in data set
Mode can provide the increment work(for showing vector roll titles on the premise of few cost is increased for splicing controller
Can, compared to traditional captions rolling function, have that display font super large, definition are high, it is good to roll uniformity, it is subtitle font, big
The lifting of small, color, the transparency arbitrarily comprehensive effect and function such as setting, brings and greatly facilitates.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (10)
1. the captions rolling display methods of a kind of mosaic display screen, it is characterised in that comprise the following steps：
The caption information and its parameter information to be shown of user's input is received, the caption information and parameter information are converted to
Corresponding dot array data, and it is sent to master control borad；
Master control borad receives the dot array data and stored, and the parameter information is obtained according to the dot array data, aobvious according to splicing
Display screen size and the parameter information choose corresponding continuous multiple frames dot matrix subdata to be shown successively from the dot array data,
Continuous each frame lattice subdata is sent to by output board corresponding to mosaic display screen by chip matrix successively；
Each frame lattice subdata corresponding to it is converted to corresponding subtitle image data by output board successively, and output board successively will
Each frame subtitle image data corresponding to it carries out picture with vedio data to be shown and is superimposed, and is sent to successively correspondingly
Mosaic display screen show, to complete the scrolling display of captions；
Read the dot array data of one fixed width every time according to the total pixel of the width of mosaic display screen, data window start-stop will be read
Location is slided according to default speed, and output board receives the real time data of rolling；It is shown on mosaic display screen according to captions
The word of the continuous displacement of rolling speed；
One SERDES passage of increase is used for the multiplexing of roll titles, first judge data whether roll titles data, then solved
The switching selection of code logic, is converted into the DDR memory fields that picture frame data is stored in advance passage, and Overlapping display need not then be changed
With regard to can by caption data by picture be superimposed in a manner of Overlapping display.
2. the captions rolling display methods of mosaic display screen according to claim 1, it is characterised in that the parameter information
Including：Display font size, font color and captions rolling speed.
3. the captions rolling display methods of mosaic display screen according to claim 2, it is characterised in that the reception user
The caption information and its parameter information to be shown of input, the caption information and parameter information are converted into corresponding dot matrix number
According to, and master control borad is sent to, specifically include：
Computer receives the caption information of the desired display of user's input, and the display font size of user's setting, font color
With captions rolling velocity information；
According to the caption information, display font size, font color and captions rolling velocity information, read and stored on computer
Vector font library, dot array data corresponding to generation；
The dot array data is sent to master control borad.
4. the captions rolling display methods of mosaic display screen according to claim 2, it is characterised in that the master control borad connects
Receive the dot array data and store, the parameter information is obtained according to the dot array data, according to mosaic display screen size and institute
State parameter information and choose corresponding continuous multiple frames dot matrix subdata to be shown successively from the dot array data, pass through chip matrix
Continuous each frame lattice subdata is sent to output board corresponding to mosaic display screen successively, specifically included：
Master control borad receives the dot array data, and is stored in the memory on master control borad；
Master control borad parses to the dot array data, obtains font color and the captions rolling velocity information；
Chosen successively continuously from the dot array data according to the total pixel of the width of mosaic display screen and the captions rolling speed
Multiframe corresponds to the dot matrix subdata of width；
Continuous each frame lattice subdata is sent to by output board corresponding to mosaic display screen by chip matrix successively.
5. the captions rolling display methods of mosaic display screen according to claim 2, it is characterised in that the output board according to
Secondary that each frame lattice subdata corresponding to it is converted into corresponding subtitle image data, output board successively will be each corresponding to it
Frame subtitle image data carries out picture with vedio data to be shown and is superimposed, and is sent to corresponding mosaic display screen successively
It has been shown that, to complete the scrolling display of captions, is specifically included：
The output board continuous multiple frames dot matrix subdata that receiving matrix chip sends over successively, the data for judging to receive whether be
Dot matrix subdata corresponding to captions to be shown, if it has, then the dot matrix subdata is converted into corresponding subtitle image data；
After each frame subtitle image data is superimposed with vedio data progress picture to be shown successively, and send to corresponding
Mosaic display screen shown, to realize that captions are scrolled with the captions rolling speed on mosaic display screen.
A kind of 6. captions rolling display system of mosaic display screen, it is characterised in that including：
Caption information obtains and sending module, will for receiving the caption information and its parameter information to be shown of user's input
The caption information and parameter information are converted to corresponding dot array data, and are sent to master control borad；
Dot array data chooses module, for receiving the dot array data by master control borad and storing, is obtained according to the dot array data
To the parameter information, corresponding treat is chosen according to mosaic display screen size and the parameter information successively from the dot array data
The continuous multiple frames dot matrix subdata of display, continuous each frame lattice subdata is sent to by splicing by chip matrix successively and shown
Output board corresponding to display screen；
Module is scrolled, for each frame lattice subdata corresponding to it to be converted into corresponding captions successively by output board
Each frame subtitle image data corresponding to it is carried out picture by view data, output board with vedio data to be shown successively
Superposition, and be sent to corresponding mosaic display screen successively and show, to complete the scrolling display of captions；
Read the dot array data of one fixed width every time according to the total pixel of the width of mosaic display screen, data window start-stop will be read
Location is slided according to default speed, and output board receives the real time data of rolling；It is shown on mosaic display screen according to captions
The word of the continuous displacement of rolling speed；
One SERDES passage of increase is used for the multiplexing of roll titles, first judge data whether roll titles data, then solved
The switching selection of code logic, is converted into the DDR memory fields that picture frame data is stored in advance passage, and Overlapping display need not then be changed
With regard to can by caption data by picture be superimposed in a manner of Overlapping display.
7. the captions rolling display system of mosaic display screen according to claim 6, it is characterised in that the parameter information
Including：Display font size, font color and captions rolling speed.
8. the captions rolling display system of mosaic display screen according to claim 7, it is characterised in that the caption information
Acquisition and sending module, including：
Caption information acquiring unit, for receiving the caption information for the desired display that user inputs by computer, and user sets
Display font size, font color and the captions rolling velocity information put；
Dot array data generation unit, for according to the caption information, display font size, font color and captions rolling speed
Information, read the vector font library stored on computer, dot array data corresponding to generation；
Dot array data transmitting element, for the dot array data to be sent into master control borad.
9. the captions rolling display system of mosaic display screen according to claim 7, it is characterised in that the dot array data
Module is chosen, including：
Dot array data receiving unit, for receiving the dot array data by master control borad, and it is stored in the memory on master control borad
In；
Dot array data resolution unit, the dot array data is parsed for master control borad, obtains the font color and captions
Rolling speed information；
Dot matrix subdata chooses unit, for the total pixel of width according to mosaic display screen and the captions rolling speed from described
The dot matrix subdata that continuous multiple frames correspond to width is chosen in dot array data successively；
Dot matrix subdata transmitting element, for continuous each frame lattice subdata to be sent into splicing successively by chip matrix
Output board corresponding to display screen.
10. the captions rolling display system of mosaic display screen according to claim 7, it is characterised in that described roll shows
Show module, including：
Dot matrix subdata receives and judging unit, for passing through the output board continuous multiple frames that receiving matrix chip sends over successively
Whether dot matrix subdata, the data for judging to receive are dot matrix subdata corresponding to captions to be shown, if it has, then by the point
A period of time data are converted to corresponding subtitle image data；
Superposition and display unit, for each frame subtitle image data and vedio data to be shown to be carried out into picture successively
After superposition, and send to corresponding mosaic display screen and shown, to realize that captions are aobvious in splicing with the captions rolling speed
Scrolled in display screen.
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| CN105975234A (en) * | 2016-05-10 | 2016-09-28 | 罗杰 | Information superposition display system |
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| CN107393494A (en) * | 2017-08-17 | 2017-11-24 | 福建星网锐捷通讯股份有限公司 | A kind of font dot matrix display methods and storage device based on LCDs |
| CN110134352B (en) * | 2018-02-08 | 2022-02-01 | 北京淳中科技股份有限公司 | Signal processing system, control device, output device and method |
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| CN109729406A (en) * | 2018-12-04 | 2019-05-07 | 北京凯视达科技有限公司 | Caption presentation method, device, storage medium and electronic equipment |
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| CN110430325B (en) * | 2019-08-23 | 2021-06-15 | 奇酷互联网络科技（深圳）有限公司 | Information transmission method, mobile terminal and storage medium |
| CN112486438A (en) * | 2019-09-12 | 2021-03-12 | 杭州海康威视数字技术股份有限公司 | OSD (on-screen display) cross-screen scrolling display method and device and display output equipment |
| CN110557578A (en) * | 2019-09-29 | 2019-12-10 | 苏州科达科技股份有限公司 | Subtitle display device and method for LED spliced screen and related equipment |
| CN110910918B (en) * | 2019-10-11 | 2021-03-23 | 广州优谷信息技术有限公司 | Subtitle rolling control method, system and device |
| CN111031380A (en) * | 2019-12-20 | 2020-04-17 | 威创集团股份有限公司 | Subtitle video processing method and system |
| CN111327842B (en) * | 2020-02-17 | 2023-04-21 | 视联动力信息技术股份有限公司 | Rolling caption display method and device |
| CN112331026A (en) * | 2020-11-09 | 2021-02-05 | 深圳市小喵科技有限公司 | Method and device for simulating dot matrix screen display and readable storage medium |
| CN113422911B (en) * | 2021-05-25 | 2023-06-13 | 广西电网有限责任公司电力科学研究院 | Image acquisition, transmission and reception processing method, acquisition equipment and service equipment |
| CN113641321A (en) * | 2021-08-19 | 2021-11-12 | 广州市保伦电子有限公司 | Subtitle rolling method and system for splicing display system |
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