CN106534615A - Video signal processing apparatus and control method thereof - Google Patents
Video signal processing apparatus and control method thereof Download PDFInfo
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- CN106534615A CN106534615A CN201611028642.8A CN201611028642A CN106534615A CN 106534615 A CN106534615 A CN 106534615A CN 201611028642 A CN201611028642 A CN 201611028642A CN 106534615 A CN106534615 A CN 106534615A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
The present invention relates to a video signal processing apparatus and a control method thereof. The apparatus comprises a decoding unit, a parallel-to-serial conversion unit, a first crossing unit, a second crossing unit, a serial-to-parallel conversion unit, a control unit, and an output unit. The first crossing unit and the second crossing unit are used for performing crossing processing on a serial signal output by the parallel-to-serial conversion unit. The serial-to-parallel conversion unit is used for converting a serial signal output by the first crossing unit or the second crossing unit into a parallel signal. The output unit is used for outputting a video according to the parallel signal output by the serial-to-parallel conversion unit. The control unit is used for outputting a first instruction when it is detected that the first crossing unit fails and no idle channel is available, so as to close the first crossing unit and open the second crossing unit, and uploading stored configuration information of the first crossing unit to the second crossing unit. According to the video signal processing apparatus and control method thereof, a redundant design of dual crossing units is adopted, so that the video signal processing apparatus is more stable and reliable.
Description
Technical field
The present invention relates to screen splicing process field, more particularly to a kind of apparatus for processing of video signals and its controlling party
Method.
Background technology
At present in screen splicing processing technology field, video processor is the heart that whole large-size screen monitors show, although in client
Show that end is invisible, the effect of key is but served to whole system.The height of video processor its performance, directly determines whole
The technical merit and customer experience effect of individual system.Traditional video processor has three kinds, and one kind is devices at full hardware architecture processor,
One kind is distributed processors, and also one kind is PC architecture processors.Either any processor, has a common feature,
Scheduling and the interleaving function of video are needed exactly, to adapt to the use demand of user.For example, in subway control centre, usually
Up to a hundred screens are worked simultaneously, and require annual fault-free, therefore very harsh for the reliability requirement of processor, but
Traditional video processor its reliability Shortcomings when video signal is processed, it is difficult to meet the applied environment of harshness.
The content of the invention
Based on this, it is directed to traditional video processor and there is a problem of that when video signal is processed reliability is not enough, this
Invention provides a kind of apparatus for processing of video signals, by the Redundancy Design of cross unit, improves the reliability of video frequency signal processing
Property.
The embodiment of the present invention is employed the following technical solutions：
A kind of apparatus for processing of video signals, including decoding unit, parallel serial conversion unit, the first cross unit, the second intersection
Unit, serioparallel exchange unit, control unit and output unit；
The decoding unit is for decoding video signal, output parallel signal；
The parallel serial conversion unit is for being converted to serial signal by the parallel signal that the decoding unit is exported；
First cross unit and second cross unit are for the serial letter that exports to the parallel serial conversion unit
Number carry out cross processing；
The serioparallel exchange unit turns for the serial signal for exporting first cross unit or the second cross unit
It is changed to parallel signal；
The output unit carries out video frequency output for the parallel signal exported according to the serioparallel exchange unit；
Described control unit is for breaking down and export during without idle channel detecting first cross unit
One instruction, to close first cross unit and start second cross unit, and stored described first is intersected
The configuration information of unit is loaded to second cross unit.
The present invention also provides a kind of control method of apparatus for processing of video signals, comprises the steps：
When detecting the first cross unit and breaking down, in judging first cross unit, whether there is free idle channel；
If it is not, then closing first cross unit；
Start the second cross unit, and the configuration information of first cross unit for having stored is loaded to described second
Cross unit.
Based on the technical scheme in the embodiment of the present invention, apparatus for processing of video signals employs cross unit Redundancy Design
Structure, built-in first cross unit and the second cross unit, only have the first cross unit in running order during normal work, when
When which breaks down, the second cross unit can be started rapidly, and the configuration information of the first cross unit is loaded to the second intersection
Unit so as to obtain the crossing condition of each serial signal, then the second cross unit will take over the first cross unit operation appoint
Business, makes output unit normally export video signal, so as to improve the stability and reliability of apparatus for processing of video signals.
Description of the drawings
Fig. 1 is structural representation of the apparatus for processing of video signals of the present invention in one embodiment；
Fig. 2 is apparatus for processing of video signals of the invention structural representation in the second embodiment；
Fig. 3 is structural representation of the apparatus for processing of video signals of the present invention in the 3rd embodiment；
Fig. 4 is structural representation of the apparatus for processing of video signals of the present invention in the 4th embodiment；
Fig. 5 is the control method schematic flow sheet in one embodiment of the apparatus for processing of video signals of the present invention.
Specific embodiment
Present disclosure is described in further detail below in conjunction with preferred embodiment and accompanying drawing.Obviously, hereafter institute
The embodiment of description is only used for explaining the present invention, rather than limitation of the invention.Based on the embodiment in the present invention, this area is general
The every other embodiment obtained under the premise of creative work is not made by logical technical staff, belongs to present invention protection
Scope.Although it should be appreciated that hereinafter adopting term " first ", " second " etc. to describe various information, these letters
Breath should not necessarily be limited by these terms, and these terms are only for same type of information is distinguished from each other out.For example, without departing from this
In the case of bright scope, " first " information can also be referred to as " second " information, similar, and " second " information can also be referred to as
" first " information.It also should be noted that, for the ease of description, illustrate only part related to the present invention in accompanying drawing and
Not all content.
Fig. 1 is structural representation of the apparatus for processing of video signals of the present invention in one embodiment, as shown in figure 1,
Apparatus for processing of video signals in the present embodiment, including decoding unit 10, parallel serial conversion unit 20, the first cross unit 31,
Two cross units 32, serioparallel exchange unit 40, output unit 50 and control unit 60.Wherein, decoding unit 10 is for regarding
Frequency signal is decoded, and exports parallel signal.The number of decoding unit 10 can be one or more, and one or more decodings are single
First 10 decodable video signals include the video signals such as HMDI, VGA, DP, RGB, SDI, and the decoded unit of video signal 10 is solved
Become the rgb video signal or other video format signals of parallel transmission after code, and enter parallel serial conversion unit 20.
Parallel serial conversion unit 20 is for example converted into for the parallel signal that decoding unit 10 is exported is converted to serial signal
The high speed serdes signal of serial.In another embodiment, with reference to shown in Fig. 2, parallel serial conversion unit 20 also includes video figure
As processing module 201, for carrying out Computer Vision according to the parallel signal of the output of decoding unit 10, such as image scaling,
The process such as cutting, color gamut conversion.
First cross unit 31 and the second cross unit 32 are for carrying out to the serial signal that parallel serial conversion unit 20 is exported
Cross processing.Cross processing refers to and the serial signal being input into is scheduled, for example with high-speed serial digital space switching skill
Export after the serial signal reversed order that art will be input into.First cross unit 31 and the second cross unit 32 can be realized arbitrarily defeated
Enter the reversed order output of signal.
Serioparallel exchange unit 40 is changed for the serial signal for exporting the first cross unit 31 or the second cross unit 32
For parallel signal, the function of serioparallel exchange unit 40 is contrary with the function of parallel serial conversion unit 50.In the present embodiment, it is desirable to go here and there
And the number of channels of converting unit 40 is enough so as to the letter of the first cross unit 31 and the output of the second cross unit 32 can be received
Number.In another embodiment, with reference to shown in Fig. 2, serioparallel exchange unit 40 includes selector 401 and module 402 of unstringing, and passes through
Selector 401 can select the serial signal of one or more passages to send into module 402 of unstringing, and module of unstringing 402 is for choosing
The serial signal for selecting the output of device 401 carries out solution string manipulation, is converted into parallel signal.
Output unit 50 carries out video frequency output for the parallel signal exported according to serioparallel exchange unit 40.Output unit 50
Number can be one or more.Output unit 50 can be made up of the video coding chip of specialty, such as fpga chip.Output
Unit 50 receives the parallel signal from the output of serioparallel exchange unit 40, and which is encoded, and exports video signal.In one kind
In optional embodiment, output unit 50 is also equipped with Computer Vision function, can export according to serioparallel exchange unit 40
Parallel signal video image is processed, for example image scaling, de interlacing etc. process.
Apparatus for processing of video signals in the present embodiment employs the structure of crossing redundancy design, in real work, the
, used as main crossings unit normal work, the second cross unit 32 is used as standby from cross unit for one cross unit 31.Believe in video
When number processing meanss work, cross processing is carried out to the serial signal that parallel serial conversion unit 20 is exported by the first cross unit 31,
And the serial signal after cross processing is sent into into serioparallel exchange unit 40.And control unit 60 can be to the first cross unit 31
Working condition is detected and is controlled.When control unit 60 detects the first cross unit 31 to break down, the first friendship is judged
Whether fork unit 31 is free idle channel, if there is free idle channel, the passage that the first cross unit 31 breaks down is switched to sky
Idle channel.If without idle channel, the output of control unit 60 first is instructed the first cross unit 31, to close the first cross unit
31 and start the second cross unit 32, and the configuration information of the first cross unit 31 is loaded to the second cross unit 32.Control
Unit 60 can be recorded in journal file with generating Trouble Report according to fault message, and the personnel that maintain easily have found video letter
The failure occurred in number processing meanss.
Above-mentioned configuration information at least includes the crossing condition of the currently processed each serial signal of the first cross unit 31, matches somebody with somebody
Confidence breath is storable in the memorizer separate with the first cross unit 31, such as the flash storage in hardware single board,
So hinder in the first cross unit 31 for some reason and after closing, easily can read configuration information from memorizer, and by its
Load to the second cross unit 32 for starting, be the providing convenience property of switching of cross unit.After second cross unit 32 starts,
The configuration information of the first cross unit 31 is loaded, the crossing condition of each serial signal is read from configuration information, hereafter second handed over
The operation task of the first cross unit of comprehensive adapter 31 is carried out by fork unit 31 to the serial signal of the output of parallel serial conversion unit 20
Dispatch deal, and export to serioparallel exchange unit 40, make whole apparatus for processing of video signals recover original working condition.
From the above mentioned, the apparatus for processing of video signals in the present embodiment employs the structure of crossing redundancy design, and built-in the
One cross unit and the second cross unit, when the first cross unit breaks down, can start rapidly the second cross unit, and will
The configuration information of the first cross unit is loaded to the second cross unit so as to obtain the crossing condition of each serial signal, Ran Hou
The operation task of two the first cross units of cross unit adapter, makes output unit normally export video signal, regards so as to improve
The stability and reliability of audio signalprocessing.
In another embodiment, control unit 60 can also be detected and be controlled to the working condition of output unit 50
System.When control unit 60 detects the currently used passage of certain output unit 50 and breaks down, output second is instructed, so that should
Faulty channel is switched to its idle channel by output unit 50.Now control unit 60 can also generate failure according to fault message
Report, and be recorded in journal file.
In another embodiment, in order to further improve the reliability of apparatus for processing of video signals, video frequency signal processing
Device additionally uses the winding design structure of serial signal.With reference to shown in Fig. 3, the input of serioparallel exchange unit 40 and first is handed over
The input connection of fork unit 31, this attachment structure can cause not carry out solving string manipulation through serioparallel exchange unit 40
Serial signal loops back to the input of the first cross unit 31.60 pairs of the first cross units 31 of control unit are to output unit 50
Data channel detected, wherein, the first cross unit 31 includes serioparallel exchange unit 40 to the data channel of output unit 50
Each passage and intermediate conveyor circuit.If control unit 60 detects the data of the first cross unit 31 to output unit 50
Passage breaks down, then the output of control unit 60 the 3rd is instructed, so that the first cross unit 31 is exported to serioparallel exchange unit 40
Serial signal loopback transmit to the input of the first cross unit 31, the first cross unit 31 pairs serial signal intersects
Malfunctioning module can be bypassed after process.Such as control unit 60 detects the work(that unstrings of certain passage A in serioparallel exchange unit 40
Can break down, and the function of unstringing of passage B is normal, then the output of control unit 60 the 3rd is instructed, and makes the first cross unit 31 defeated
Go out to the serial signal loopback of the passage A input transmitted to the first cross unit 31, the first cross unit 31 pairs serial
After signal carries out cross processing, the passage B of serioparallel exchange unit 40 is fed through, failure has been got around so as to pass through data winding function
Passage, improves the reliability of apparatus for processing of video signals.
In the same manner, referring now still to shown in Fig. 3, it is also possible to which the input of serioparallel exchange unit 40 is defeated with the second cross unit 32
Enter end connection.Control unit 60 is when detecting the second cross unit 32 and breaking down to the data channel of output unit 50, defeated
Go out the 4th instruction, so as to the second cross unit 32 exports to the serial signal loopback of serioparallel exchange unit 40 to transmit to second intersect
The input of unit 32, gets around malfunctioning module by the process of the second cross unit 32.
In another embodiment, 50 to the first cross unit 31 of output unit is also add in apparatus for processing of video signals
With the loopback path of the second cross unit 32.With reference to shown in Fig. 4, the outfan of output unit 50 respectively with the first cross unit 31
Input, the second cross unit 32 input connection.On the one hand this loopback path can be realized getting around malfunctioning module
Function, on the other hand can improve the superposition number of plies of single screen output image.
Specifically, the function of realizing getting around malfunctioning module is directed to, 60 pairs of the first cross units 31 of control unit are to output
The data channel of unit 50, the second cross unit 32 are detected to the data channel of output unit 50.Examined with control unit 60
As a example by surveying the data channel of the first cross unit 31 to output unit 50, if detection serioparallel exchange unit 40 is intersecting list to first
When the serial signal of 31 output of unit is unstringed, if the function of unstringing of one of passage breaks down, output unit 50 will
The serial signal loopback of the passage output is exported to the first cross unit 31, and the first cross unit is processed to the serial signal
The passage broken down in getting around serioparallel exchange unit 40 afterwards, exports to other normally functioning passages that unstring.Hand over for second
The processing procedure of fork unit 32, similar to the first cross unit 31, it will not go into details herein.
As current video field resolution is being constantly increasing, the content that single screen shows is being continuously increased, video
The demand of the single screen output image superposition performance of signal processing apparatus also increasingly strengthens.The single screen output realized by traditional method
The superposition number of plies of image is relatively low, it is desirable to have a kind of new method for designing is improving the superposition number of plies of single screen output image.And this reality
Apply and returning for 50 to the first cross unit 31 of output unit and the second cross unit 32 in apparatus for processing of video signals, is increased in example
Ring passage, can cause the single screen output image superposition number of plies to reach a high value.Specifically, control unit 60 receiving is
After the single screen superposition output request of system, it is first depending on single screen superposition output request and judges whether log-on data winding function.
In a kind of optional embodiment, the superposition number of plies of single screen output image is contained in single screen superposition output request, according to the list
Whether the superposition number of plies of screen output image is it may determine that need log-on data winding function.For example, if single screen output image
The superposition number of plies is more than threshold value, then judge log-on data winding function.If the superposition number of plies of single screen output image is less than threshold value, can
To realize single screen output image overlaying function using usual manner.It is after control unit 60 judges log-on data winding function, defeated
Go out the 5th instruction, so that the parallel signal of 50 pairs of receptions of output unit is combined, and the parallel signal after combining is processed turns
It is changed to serial signal winding to transmit to the input of the first cross unit 31 and/or the second cross unit 32.
Specifically, it is assumed that only one of which output unit 50, its reception is believed parallel by the N roads that serioparallel exchange unit 40 is exported
Number, the corresponding video data all the way per parallel signal all the way.According to the 5th instruction of the output of control unit 60, output unit 50 is by N
K roads parallel signal in the parallel signal of road is combined (wherein 1≤k≤N), and the parallel signal after combining is converted to serial
Signal, then by serial signal transfer to cross unit (the first cross unit 31 or the second cross unit being currently operating
, or simultaneous transmission gives the first cross unit 31 and the second cross unit 32 32).K roads video counts are contained in the serial signal
According to, Jing the first cross unit 31 (or second cross unit 32), serioparallel exchange unit 40 process after be re-fed into output unit again
50 input so that N+k-1 roads video data is included in the parallel signal that output unit 50 is received, output unit 50 enters to which
Row is exported to display screen after processing, that is, realize single screen output image superposition N+k-1 layers.When the quantity of output unit 50 it is enough
When, if each output unit 50 can receive the N roads parallel signal exported by serioparallel exchange unit 40, can realize that single screen is exported
The maximum superposition number of plies of image is N*N, it can be seen that, the apparatus for processing of video signals in the present embodiment can be greatly enhanced list
The superposition number of plies of screen output image, meets the market demand.
According to the apparatus for processing of video signals of the invention described above, accordingly, the present invention also provides a kind of video frequency signal processing
The control method of device, below in conjunction with the accompanying drawings and preferred embodiment is entered to the control method of apparatus for processing of video signals of the present invention
Row is described in detail.
Fig. 5 is the control method schematic flow sheet in one embodiment of the apparatus for processing of video signals of the present invention, ginseng
According to shown in Fig. 5, the control method comprises the steps：
Whether step S110, when detecting the first cross unit and breaking down, have in judging first cross unit
Idle channel；If it is not, then entering step S120；
Referring to figs. 1 to Fig. 4, the first cross unit 31 is used as main crossings unit normal work, 32 conduct of the second cross unit
It is standby from cross unit.When apparatus for processing of video signals works, parallel serial conversion unit 20 is exported by the first cross unit 31
Serial signal carry out cross processing, and the serial signal after cross processing is sent into into serioparallel exchange unit 40.In the present embodiment
In, the working condition of the first cross unit 31 is detected, if detect the first cross unit 31 breaking down, first is judged
Whether cross unit 31 is free idle channel.
Step S120, closes first cross unit；
If the first cross unit 31 is without idle channel, the first cross unit 31 is closed so as to quit work.
Step S130, starts the second cross unit, and the configuration information of the first cross unit for having stored is loaded to institute
State the second cross unit.
After starting the second cross unit 32, the configuration information of the first cross unit 31 for having stored is loaded and is intersected to second
Unit 32.Further, can record in journal file, maintain easily personnel to generate Trouble Report according to fault message
It was found that the failure occurred in apparatus for processing of video signals.
Above-mentioned configuration information at least includes the crossing condition of the currently processed each serial signal of the first cross unit 31, matches somebody with somebody
Confidence breath is storable in the memorizer separate with the first cross unit 31, such as the flash storage in hardware single board,
So after the first cross unit 31 is closed, configuration information easily can be read from memorizer, and load it to opening
The second dynamic cross unit 32, is the providing convenience property of switching of cross unit.After second cross unit 32 starts, loading first
The configuration information of cross unit 31, reads the crossing condition of each serial signal from configuration information, hereafter the second cross unit 31
By the operation task of the first cross unit of comprehensive adapter 31, place is scheduled to the serial signal of the output of parallel serial conversion unit 20
Reason, and export to serioparallel exchange unit 40, make whole apparatus for processing of video signals recover original working condition.
Referring now still to shown in Fig. 5, in another embodiment, the control method of the present invention also includes：
Step S140, if there is free idle channel in the first cross unit, by leading to that first cross unit breaks down
Road switches to the idle channel of first cross unit.
Optionally, the control method in the present embodiment also includes：Occur the currently used passage of output unit is detected
During failure, the passage that the output unit breaks down is switched to into the idle channel of the output unit.
Optionally, the control method in the present embodiment also includes：In the number for detecting the first cross unit to output unit
When breaking down according to passage, first cross unit is exported to the serial signal loopback of the serioparallel exchange unit transmit to
The input of first cross unit；Or break down in the data channel for detecting the second cross unit to output unit
When, second cross unit is exported to the serial signal loopback of the serioparallel exchange unit to transmit to described second and intersect list
The input of unit.
Optionally, the control method in the present embodiment also includes：After single screen superposition output request is received, if according to institute
State single screen superposition output request and judge log-on data winding function, then the parallel signal that output unit is received is combined, and
Parallel signal after combining is processed is converted to serial signal winding and transmits to the first cross unit and/or the second cross unit
Input.
The control method of the apparatus for processing of video signals of the present invention can refer to above-mentioned apparatus for processing of video signals embodiment and retouch
The method stated, is no longer repeated herein.
It should be noted that for aforesaid each method embodiment, for easy description, which is all expressed as a series of
Combination of actions, but those skilled in the art should know, and the present invention is not limited by described sequence of movement, because according to
According to the present invention, some steps can adopt other orders or while carry out.
Each technical characteristic of embodiment described above arbitrarily can be combined, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore can not be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of apparatus for processing of video signals, it is characterised in that including decoding unit, parallel serial conversion unit, the first cross unit,
Second cross unit, serioparallel exchange unit, control unit and output unit；
The decoding unit is for decoding video signal, output parallel signal；
The parallel serial conversion unit is for being converted to serial signal by the parallel signal that the decoding unit is exported；
First cross unit and second cross unit are for entering to the serial signal that the parallel serial conversion unit is exported
Row cross processing；
The serioparallel exchange unit is for the serial signal that first cross unit or the second cross unit are exported is converted to
Parallel signal；
The output unit carries out video frequency output for the parallel signal exported according to the serioparallel exchange unit；
Described control unit is for first cross unit breaks down and output first refers to during without idle channel detecting
Order, to close first cross unit and start second cross unit, and by first cross unit for having stored
Configuration information load to second cross unit.
2. apparatus for processing of video signals according to claim 1, it is characterised in that described control unit is additionally operable in detection
Output second when breaking down to the currently used passage of the output unit is instructed, so that the output unit will break down
Passage switch to idle channel.
3. apparatus for processing of video signals according to claim 1 and 2, it is characterised in that the serioparallel exchange unit it is defeated
Enter end to be connected with the input of first cross unit；
Described control unit is additionally operable to that event occurs in the data channel for detecting first cross unit to the output unit
Output the 3rd during barrier is instructed, so as to first cross unit is exported to the serial signal loopback of the serioparallel exchange unit transmit
To the input of first cross unit.
4. apparatus for processing of video signals according to claim 1 and 2, it is characterised in that the serioparallel exchange unit it is defeated
Enter end to be connected with the input of second cross unit；
Described control unit is additionally operable to that event occurs in the data channel for detecting second cross unit to the output unit
Output the 4th during barrier is instructed, so as to second cross unit is exported to the serial signal loopback of the serioparallel exchange unit transmit
To the input of second cross unit.
5. apparatus for processing of video signals according to claim 1 and 2, it is characterised in that the outfan of the output unit
Input respectively with first cross unit, the input of second cross unit are connected；
Described control unit is additionally operable to：After single screen superposition output request is received, if according to single screen superposition output request
Judge log-on data winding function, then output the 5th is instructed, so that the output unit is combined to the parallel signal for receiving,
And the parallel signal after combining is processed is converted to serial signal winding and transmits to first cross unit and/or described second
The input of cross unit.
6. a kind of control method of the apparatus for processing of video signals any one of claim 1 to 5, it is characterised in that bag
Include following steps：
When detecting the first cross unit and breaking down, in judging first cross unit, whether there is free idle channel；
If it is not, then closing first cross unit；
Start the second cross unit, and the configuration information of first cross unit for having stored is loaded to the described second intersection
Unit.
7. control method according to claim 6, it is characterised in that also include：
If being free idle channel in first cross unit, the passage that first cross unit breaks down is switched to into institute
State the idle channel of the first cross unit.
8. control method according to claim 6, it is characterised in that also include：
When detecting the currently used passage of output unit and breaking down, the passage switching that the output unit is broken down
To the idle channel of the output unit.
9. control method according to claim 6, it is characterised in that also include：
When the data channel for detecting the first cross unit to output unit breaks down, first cross unit is exported
Serial signal loopback to the serioparallel exchange unit is transmitted to the input of first cross unit；
Or
When the data channel for detecting the second cross unit to output unit breaks down, second cross unit is exported
Serial signal loopback to the serioparallel exchange unit is transmitted to the input of second cross unit.
10. control method according to claim 6, it is characterised in that also include：
After single screen superposition output request is received, if judging log-on data winding work(according to single screen superposition output request
Can, then the parallel signal that output unit is received is combined, and the parallel signal after combining is processed is converted to serial signal
Winding is transmitted to the input of the first cross unit and/or the second cross unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888862A (en) * | 2017-11-24 | 2018-04-06 | 威创集团股份有限公司 | A kind of signal shunt method and system applied to video-splicing |
| CN109462716A (en) * | 2018-12-21 | 2019-03-12 | 北京淳中科技股份有限公司 | Signal processing method, display panel control and display & control system |
| CN111083394A (en) * | 2019-12-18 | 2020-04-28 | 南京巨鲨显示科技有限公司 | High-efficiency video splicing device and method |
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| CN109462716B (en) * | 2018-12-21 | 2020-09-01 | 北京淳中科技股份有限公司 | Signal processing method, display control equipment and display control system |
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