CN107888862A - A kind of signal shunt method and system applied to video-splicing - Google Patents
A kind of signal shunt method and system applied to video-splicing Download PDFInfo
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- CN107888862A CN107888862A CN201711193957.2A CN201711193957A CN107888862A CN 107888862 A CN107888862 A CN 107888862A CN 201711193957 A CN201711193957 A CN 201711193957A CN 107888862 A CN107888862 A CN 107888862A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
- H04N7/012—Conversion between an interlaced and a progressive signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- Engineering & Computer Science (AREA)
- Computer Graphics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
A kind of signal shunt method applied to video-splicing provided herein, including：After vision signal is converted into serial signal, the serial signal is divided into desktop signals and vision signal；The desktop signals are transmitted to desktop Cross module；By the video signal transmission to video Cross module.Using dual crossing module, the method exchanged respectively video data and desktop signals, the structure that double-current high speed signal exchanges is realized.Because single desktop Cross module be present, the data bandwidth of desktop signals is no longer influenced by the limitation of vision signal, can realize the function of double desktop accesses or the access of more desktops whereby.The application also provides a kind of signal separate system applied to video-splicing, a kind of readable storage medium storing program for executing and a kind of terminal, has above-mentioned beneficial effect.
Description
Technical field
The application is related to screen splicing process field, the method that more particularly to a kind of signal applied to video-splicing shunts
And system, a kind of readable storage medium storing program for executing and a kind of terminal.
Background technology
At present in large-screen splicing process field, high-resolution desktop, which is presented, has become a kind of basic function.With height
The Client application of resolution ratio desktop is more and more deep, and traditional single desktop display processing encounters certain bottleneck.Such as in country
Review troops scene in the large-scale Tian An-men at security center, it is desirable to which the output of high-resolution desktop there must be backup to access, it is ensured that equipment is never
Delay machine；In subway control centre, individual screens usually up to a hundred work simultaneously, do not require nothing more than 7*24 whole year hour fault-frees, and
Need multiple high-resolution while the application presented.The application requirement video processor of these desktops possesses double desktop redundancy work(
Can, while multiple desktops can also be exported, these are difficult to what is realized inside traditional video processor；General way is to adopt
Realized with the stupid method of device backup, but because being two complete equipments in the case of going wrong, switch speed has certain delay,
And such delay clearly user wants what is seen.
Traditional video processor carries out interleaved scheme using desktop and data-signal in same cross chips, should
The shortcomings that scheme is that the intersection bandwidth of same chip is shared by two kinds of signals, and the access of desktop way is limited to；Meanwhile if hand over
Pitch module to break down, whole video processor will be caused to be in machine state of delaying.
Apply for content
The purpose of the application is to provide a kind of signal shunt method and system applied to video-splicing, a kind of readable storage
Medium and a kind of terminal, solves the disposal ability limitation problem for only having a Cross module to bring in the prior art and high wind
Dangerous problem.
In order to solve the above technical problems, the application provides a kind of signal shunt method applied to video-splicing, specific skill
Art scheme is as follows：
After vision signal is converted into serial signal, the serial signal is divided into desktop signals and vision signal；
The desktop signals are transmitted to desktop Cross module；
By the video signal transmission to video Cross module；Wherein, the desktop Cross module and the video intersect
Module is Cross module.
Wherein, vision signal is converted into serial signal includes：
The second vision signal is obtained after being decoded to the vision signal；
Second vision signal is converted into serial signal.
Wherein, methods described also includes：
The desktop Cross module exports the first data and the second data by after desktop signals processing；Wherein, it is described
First data are used for normally display, and second data are used to back up display when signal source or transmission link failure.
Wherein, methods described also includes：
When the desktop Cross module breaks down, the video Cross module receives the desktop signals and institute simultaneously
State vision signal；
When the video Cross module breaks down, the desktop Cross module receives the desktop signals and institute simultaneously
State vision signal.
Wherein, methods described also includes：
Using FPGA DDR controller in two viewing areas of video buffer Division to show normal desktop and superfluous respectively
The desktop windowed signal of remaining desktop；
When receiving switching command, the desktop windowed signal for carrying out the normal desktop and the redundant desktop is cut
Change.
The application also provides a kind of signal separate system applied to video-splicing, including：
Desktop cross unit, for after vision signal is converted into serial signal by parallel serial conversion module, receiving the string
Desktop signals in row signal；
Video cross unit, for after vision signal is converted into serial signal by parallel serial conversion module, receiving the string
Vision signal in row signal.
Wherein, the system also includes：
Redundancy output module, for the desktop Cross module will the desktop signals processing after, output the first data and
Second data；Wherein, first data are used to normally show, second data are used to work as signal source or transmission link failure
When backup display.
Wherein, the system also includes：
First adapter unit, for simultaneously when the desktop Cross module breaks down, the video Cross module connects
Receive the desktop signals and the vision signal；
Second adapter unit, for simultaneously when the video Cross module breaks down, the desktop Cross module connects
Receive the desktop signals and the vision signal.
The application also provides a kind of readable storage medium storing program for executing, is stored thereon with program, is realized when described program is performed as follows
Step：
After vision signal is converted into serial signal, the serial signal is divided into desktop signals and vision signal；
The desktop signals are transmitted to desktop Cross module；
By the video signal transmission to video Cross module；Wherein, the desktop Cross module and the video intersect
Module is Cross module.
The application also provides a kind of terminal, including memory and processor, computer program stored in the memory, the processing
Device realizes following steps when calling the program in the memory：
After vision signal is converted into serial signal, the serial signal is divided into desktop signals and vision signal；
The desktop signals are transmitted to desktop Cross module；
By the video signal transmission to video Cross module；Wherein, the desktop Cross module and the video intersect
Module is Cross module.
A kind of signal shunt method applied to video-splicing provided herein, including：Changed by vision signal
Into after serial signal, the serial signal is divided into desktop signals and vision signal；The desktop signals are transmitted to desktop and handed over
Pitch module；By the video signal transmission to video Cross module.Using dual crossing module, video data and desktop signals are entered
The method that row exchanges respectively, realize the structure that double-current high speed signal exchanges.Because single desktop Cross module, desktop be present
The data bandwidth of signal is no longer influenced by the limitation of vision signal, can realize the work(of double desktop accesses or the access of more desktops whereby
Energy.The application also provides a kind of signal separate system applied to video-splicing, a kind of readable storage medium storing program for executing and a kind of terminal,
With above-mentioned beneficial effect, here is omitted.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of application, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
The signal processing flow schematic diagram for the existing Video processing that Fig. 1 is provided by the embodiment of the present application；
A kind of flow chart for signal shunt method applied to video-splicing that Fig. 2 is provided by the embodiment of the present application；
A kind of data flow for signal shunt method applied to video-splicing that Fig. 3 is provided by the embodiment of the present application
Figure；
A kind of structural representation for signal separate system applied to video-splicing that Fig. 4 is provided by the embodiment of the present application
Figure.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In accompanying drawing, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belong to the scope of the application protection.
Fig. 1 is referred to, Fig. 1 is the signal processing flow schematic diagram for the existing Video processing that the embodiment of the present application provides.Letter
Number output procedure be decoder module → parallel serial conversion module → Cross module → serioparallel exchange module → output module.
For decoder module, the vision signal of decoding includes the vision signals such as desktop, HMDI, VGA, DP, RGB, SDI,
Become a kind of RGB (color coded format) forms or other video formats after signal decoding, into parallel serial conversion module.
Parallel serial conversion module is mainly converted into parallel signal serial high speed serdes signals (Serializer
And Deserializer, high speed SerDes serial communication technology are the conventional prior art of this area, are not spoken more herein
It is bright)；Meanwhile Computer Vision function is also equipped with, image can be zoomed in and out, cut and color gamut conversion etc..Parallel-serial conversion
Module uses logic chip, realizes correlation function by logical code, final module exports the high speed serdes containing video bag
It is right.
The function of Cross module is to carrying out reversed order output by high speed serdes, and the exchange that can do arbitrary signal is defeated
Go out.Existing Cross module is one piece of cross chips.
It by high speed signal by serial conversion is parallel output that the function of serioparallel exchange module, which is, with parallel-serial conversion mould above
Block function is opposite.
Output module is made up of the video coding chip of specialty, receives the parallel signal from string and module, and this is entered
Row coding；Meanwhile the module is also equipped with the functions such as scaling, de interlacing, the video frequency output of correlation can be controlled by control software.
Embodiment one
Fig. 2 is refer to, a kind of signal shunt method applied to video-splicing that Fig. 2 is provided by the embodiment of the present application
Flow chart, idiographic flow are as follows：
S101：After vision signal is converted into serial signal, the serial signal is divided into desktop signals and video is believed
Number；
This step is intended to distinguish the desktop signals in serial signal and vision signal, does not limit and distinguishes process herein
The middle method used.Such as different channels, Huo Zheli can be set according to be distinguished as desktop signals or the vision signal of the two
With signal selecting etc.., all should be the application's as long as the method for distinguishing desktop signals and vision signal can be realized
In protection domain.
S102：The desktop signals are transmitted to desktop Cross module；
S103：By the video signal transmission to video Cross module；
Under normal circumstances, desktop signals enter desktop Cross module, and vision signal enters video Cross module.Two intersections
Module works simultaneously, and Each performs its own functions.Because in the presence of single desktop Cross module, the bandwidth of desktop signals is no longer by vision signal
Limitation.It is thereby achieved that the function of double desktop accesses or the access of more desktops.Can be by increasing the desktop of access system
Capture card quantity, the quantity of desktop is accessed with increase.
It should be noted that S102 and S103 and in the absence of fixed sequencing relation, the two can be carried out simultaneously.
In addition, Cross module is previously mentioned by signal output to serioparallel exchange module, two friendships provided for the application
Pitch module for, can the relative high-speed channel quantity by serioparallel exchange module equally expand one times, it is therefore an objective to connect faster
Receive the vision signal and desktop signals of high speed.Adaptation --- built-in selector can also be carried out to serioparallel exchange module,
The high speed signal of selection reception setting passage is realized using the selector and is unstringed.
The embodiment of the present application provides a kind of signal shunt method applied to video-splicing, can be real by the above method
The data bandwidth of existing desktop signals is no longer influenced by the limitation of vision signal, can realize that double desktop accesses or more desktops connect whereby
The function of entering.
Embodiment two
Based on two Cross modules described in embodiment one, the application herein proposes the redundancy side based on dual crossing module
Method, embodiment are as follows：
The desktop Cross module exports the first data and the second data by after desktop signals processing；Wherein, it is described
First data are used for normally display, and second data are used to back up display when signal source or transmission link failure.
Here the first data and the second data are actually same data, are all to be exported by desktop Cross module to string
And modular converter, but a copy of it data are only shown under normal circumstances, another data is used under abnormality, such as the first number
Shown according to during channel breaks down as Backup Data, it is therefore an objective to ensure that desktop signals will not be because of Cross module or channel event
Hinder and interrupt transmission.The present embodiment realizes the redundancy effect inside Cross module.
Certainly, for video Cross module, such data back up method can be equally used, here is omitted.
It should be noted that in video-splicing process field, the generally preferential display for ensureing desktop signals, namely desktop letter
Number priority it is higher than vision signal.
Embodiment three
Based on embodiment one, redundancy processing can also be made to two Cross modules, i.e.,：
When the desktop Cross module breaks down, the video Cross module receives the desktop signals and institute simultaneously
State vision signal；
When the video Cross module breaks down, the desktop Cross module receives the desktop signals and institute simultaneously
State vision signal.
Principle herein is exactly that video Cross module and desktop Cross module are substantially Cross modules, simply as implementing
Example is described to have used two Cross modules, and each Cross module handles corresponding data under normal circumstances.But once some intersects
Module breaks down, and another Cross module can be used as standby Cross module to handle desktop signals and vision signal simultaneously, reach
To the redundancy effect between Cross module.
Example IV
Based on embodiment two and embodiment three, two kinds of redundancy approach can be combined, realized double based on dual crossing module
Redundancy, referring to Fig. 3, a kind of data for signal shunt method applied to video-splicing that Fig. 3 is provided by the embodiment of the present application
Flow chart.
Parallel serial conversion module is realized in Fig. 3 and splits data into desktop signals and vision signal, and desktop signals are normal
In the case of enter desktop Cross module (as shown on the solid line in figure 3), vision signal enters video Cross module (such as under normal circumstances
In Fig. 3 shown in dotted line).During abnormal conditions, desktop signals can also enter video Cross module (as shown in Fig. 3 dot-dashed lines).
Each Cross module exports two parts of identical data as described in embodiment two, and portion is used to normally show, Yi Fenyong
Display is backed up when when signal source or transmission link failure.
The data dual redundant based on dual crossing module is achieved in that, at utmost reduces influence during failure, improves
System entirety serious forgiveness.
Embodiment five
Based on any of the above-described embodiment, method that the present embodiment proposes a kind of switching of desktop, concrete scheme is as follows：
Using FPGA DDR controller in two viewing areas of video buffer Division to show normal desktop and superfluous respectively
The desktop windowed signal of remaining desktop；
When receiving switching command, the desktop windowed signal for carrying out the normal desktop and the redundant desktop is cut
Change.
FPGA is field programmable gate array (Field-Programmable Gate Array), and DDR refers to double
Rate synchronization dynamic RAM (Double Data Rate).The core for the desktop switching method that the present embodiment provides is same
When two video display areas be present, show same desktop windowed signal, i.e. normal interface and redundancy interface, but normal condition
Value shows normal interface.When needing switching, redundancy interface is switched to by related software according to switching command.Because software is cut
It is extremely short to change process time, almost nanosecond rank, while logic chip is the structure of a concurrent working again, whole switching
Process to the experience of user be rank be not felt by desktop signals have been switched in addition all the way, be seamless switching.
In addition, two-way desktop signals open a window after awaiting orders simultaneously, it is possible to start monitoring mechanism, if wherein desktop all the way
There is exception in signal, then shows signal normal all the way in addition, reaches the purpose of double desktop redundancies, otherwise continues normal show
Show.
Certainly, before and after this process, can also there are corresponding detection and preparation.Such as in processor starting up
When, start to judge that the two-way desktop of input has displayed whether exception, abnormality detection includes signal source, Cross module, display mould
Block etc., artificial handling failure of alarming is carried out if noting abnormalities.If the desktop signals of two-way redundancy are without exception, into phase
Close initiation of services flow.Related business process includes video and goes here and there, unstrings and show, while needs the DDR for detecting video to delay
Area is rushed, opens a window and is ready simultaneously for two-way desktop signals.
A kind of signal separate system applied to video-splicing provided below the embodiment of the present application is introduced, hereafter
The signal separate system of description can be mutually to should refer to above-described signal shunt method.
Referring to Fig. 4, a kind of knot for signal separate system applied to video-splicing that Fig. 4 is provided by the embodiment of the present application
Structure schematic diagram, the system can include：
Desktop cross unit 100, for after vision signal is converted into serial signal by parallel serial conversion module, described in reception
Desktop signals in serial signal；
Video cross unit 200, for after vision signal is converted into serial signal by parallel serial conversion module, described in reception
Vision signal in serial signal.
Based on above-described embodiment, as preferred embodiment, the signal separate system can also include：
Redundancy output module, for the desktop Cross module will the desktop signals processing after, output the first data and
Second data；Wherein, first data are used to normally show, second data are used to work as signal source or transmission link failure
When backup display.
Based on above-described embodiment, as preferred embodiment, the signal separate system can also include：
First adapter unit, for simultaneously when the desktop Cross module breaks down, the video Cross module connects
Receive the desktop signals and the vision signal；
Second adapter unit, for simultaneously when the video Cross module breaks down, the desktop Cross module connects
Receive the desktop signals and the vision signal.
Present invention also provides a kind of readable storage medium storing program for executing, and computer program stored, can be realized when the program is performed thereon
State the step of embodiment provides.The storage medium can include：USB flash disk, mobile hard disk, read-only storage (Read-Only
Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. are various to deposit
Store up the medium of program code.
Present invention also provides a kind of terminal, memory and processor can be included, computer program stored in the memory, institute
When stating the program in the processor calling memory, it is possible to achieve the step of above-described embodiment provides.Certain terminal
The component such as various network interfaces, power supply can also be included.
It is specifically intended that mentioned in this application " double desktops " etc. carries the word of " double " word, may be not single
Singly refer to two desktops, in the art, so-called " double desktops " may be considered should be according to reality with multiple desktops, concrete condition
Situation and discuss.
Each embodiment is described by the way of progressive in specification, and what each embodiment stressed is and other realities
Apply the difference of example, between each embodiment identical similar portion mutually referring to.For embodiment provide system and
Speech, because it is corresponding with the method that embodiment provides, so description is fairly simple, related part is referring to method part illustration
.
Specific case used herein is set forth to the principle and embodiment of the application, and above example is said
It is bright to be only intended to help and understand the present processes and its core concept.It should be pointed out that the ordinary skill for the art
For personnel, on the premise of the application principle is not departed from, some improvement and modification, these improvement can also be carried out to the application
Also fallen into modification in the application scope of the claims.
It should also be noted that, in this manual, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except other identical element in the process including the key element, method, article or equipment being also present.
Claims (10)
- A kind of 1. signal shunt method applied to video-splicing, it is characterised in that including：After vision signal is converted into serial signal, the serial signal is divided into desktop signals and vision signal；The desktop signals are transmitted to desktop Cross module；By the video signal transmission to video Cross module；Wherein, the desktop Cross module and the video Cross module It is Cross module.
- 2. signal shunt method according to claim 1, it is characterised in that vision signal is converted into serial signal bag Include：The second vision signal is obtained after being decoded to the vision signal；Second vision signal is converted into serial signal.
- 3. signal shunt method according to claim 2, it is characterised in that also include：The desktop Cross module exports the first data and the second data by after desktop signals processing；Wherein, described first Data are used for normally display, and second data are used to back up display when signal source or transmission link failure.
- 4. signal shunt method according to claim 3, it is characterised in that also include：When the desktop Cross module breaks down, the video Cross module receives the desktop signals and described regarded simultaneously Frequency signal；When the video Cross module breaks down, the desktop Cross module receives the desktop signals and described regarded simultaneously Frequency signal.
- 5. according to the signal shunt method described in claim any one of 1-4, it is characterised in that also include：Using FPGA DDR controller in two viewing areas of video buffer Division to show normal desktop and redundancy table respectively The desktop windowed signal in face；When receiving switching command, the switching of the desktop windowed signal of the normal desktop and the redundant desktop is carried out.
- A kind of 6. signal separate system applied to video-splicing, it is characterised in that including：Desktop cross unit, for after vision signal is converted into serial signal by parallel serial conversion module, receiving the serial letter Desktop signals in number；Video cross unit, for after vision signal is converted into serial signal by parallel serial conversion module, receiving the serial letter Vision signal in number.
- 7. signal separate system according to claim 6, it is characterised in that also include：Redundancy output module, for the desktop Cross module by after desktop signals processing, export the first data and second Data；Wherein, first data are used to normally show, second data are used for standby when signal source or transmission link failure Part display.
- 8. signal separate system according to claim 7, it is characterised in that also include：First adapter unit, for when the desktop Cross module breaks down, the video Cross module to receive institute simultaneously State desktop signals and the vision signal；Second adapter unit, for when the video Cross module breaks down, the desktop Cross module to receive institute simultaneously State desktop signals and the vision signal.
- 9. a kind of readable storage medium storing program for executing, is stored thereon with program, it is characterised in that realizes that right such as will when described program is performed Seek the signal shunt method described in any one of 1-5.
- A kind of 10. terminal, it is characterised in that including memory and processor, computer program stored in the memory, the processor The signal shunt method as described in claim any one of 1-5 is realized when calling the program in the memory.
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