CN103685980A - Video signal backup method and system and video signal transmission method and system - Google Patents
Video signal backup method and system and video signal transmission method and system Download PDFInfo
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Abstract
Disclosed are a video signal backup method and system and a video signal transmission method and system. The backup method includes the steps: building a video signal channel among a signal source, a signal processing board and a display unit, and setting the video signal channel as a backup video signal channel of a main video signal channel; dividing video signals of the signal source into two same video signals, outputting the first video signals to a main control board through the main video signal channel, outputting the first video signals processed by the main control board to the display unit for display, and outputting the second video signals to the signal processing board through the backup video signal channel to perform synchronous processing; monitoring the states of the main control board transmitting the first video signals in the main video signal channel in real time; switching the current video signal channel transmitting the video signals to the backup video signal channel when the first video signals are lost, and outputting the synchronously processed second video signals to the display unit by the signal processing board in the backup video signal channel. By the methods and the systems, signal backup and transmission are realized.
Description
Technical field
The present invention relates to the technical field that vision signal is processed, particularly relate to a kind of vision signal backup method and system and transmission method and system.
Background technology
In tradition tiled display technology, at each display unit of display system, be provided with single desktop input master control borad, master control borad is connected with display unit with signal source respectively.Master control borad, for the vision signal of the signal source receiving is processed, finally shows in display unit.
Each display unit of splicing display device has the vision signal of a greater number to be input to display system, the operational environment of whole system will be very complicated so, once wherein a certain road signal breaks down, will inevitably cause corresponding display unit to occur dropout and cause the phenomenon of blank screen or other no signals to occur.Particularly at some special occasions, need to guarantee that vision signal can not interrupt, within 7x24 hour, show, the backup tool that therefore can realize vision signal is of great significance.
Summary of the invention
Based on this, being necessary, for the easy problem of losing of vision signal, provides a kind of vision signal backup method and system and transmission method and system.
A vision signal backup method, comprising:
Set up the channel video signal between signal source-signal-processing board-display unit, and be made as the backup channel video signal of main video signal passage, wherein, described main video signal passage is the channel video signal between signal source-master control borad-display unit;
The vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, by master control borad, processed and outputed to display unit and show, the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
In Real-Time Monitoring main video signal passage, master control borad transmits the state of described first via vision signal;
When first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, the signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit.
A vision signal standby system, comprising:
Set up the channel video signal between signal source-signal-processing board-display unit, and be made as the backup channel video signal of main video signal passage, wherein, described main video signal passage is the channel video signal between signal source-master control borad-display unit;
The vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, by master control borad, processed and outputed to display unit and show, the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
In Real-Time Monitoring main video signal passage, master control borad transmits the state of described first via vision signal;
When first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, the signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit.
Above-mentioned vision signal backup method and system, by setting up the channel video signal between signal source-signal-processing board-display unit, and be made as the backup channel video signal of main video signal passage, then the vision signal of signal source is divided into identical two-path video signal, by master control borad in Real-Time Monitoring main video signal passage, transmit the state of described first via vision signal, when first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit, thereby realized the backup to this road channel video signal of master control borad, solved the problem that vision signal is easily lost, and without height configuration master control borad, adopt common single channel input master control borad.
A video-signal transmission method, comprising:
Set up backup channel video signal between signal source-signal-processing board-display unit and the main video signal passage between signal source-master control borad-display unit;
The vision signal of signal source is divided into identical two-path video signal, and first via vision signal outputs to master control borad by main video signal passage, and the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
By main video signal passage by first via video signal transmission to display unit, and in Real-Time Monitoring main video signal passage, master control borad transmits the state of described first via vision signal;
When first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit, when first via vision signal is recovered, the channel video signal of current transmission video signal is switched back to main video signal passage.
A video signal transmission system, comprising:
Set up backup channel video signal between signal source-signal-processing board-display unit and the main video signal passage between signal source-master control borad-display unit;
The vision signal of signal source is divided into identical two-path video signal, and first via vision signal outputs to master control borad by main video signal passage, and the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
By main video signal passage by first via video signal transmission to display unit, and in Real-Time Monitoring main video signal passage, master control borad transmits the state of described first via vision signal;
When first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit, when first via vision signal is recovered, the channel video signal of current transmission video signal is switched back to main video signal passage.
Above-mentioned video-signal transmission method and system, by setting up backup channel video signal between signal source-signal-processing board-display unit and the main video signal passage between signal source-master control borad-display unit, the vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes, display unit can show first via vision signal, also can show the second tunnel vision signal, when a road dropout wherein, can switch to another road signal, thereby realize the transmission of vision signal, avoid causing due to loss of data the situation of display unit blank screen.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of vision signal backup method embodiment of the present invention;
Fig. 2 is the structural representation of vision signal standby system embodiment of the present invention;
Fig. 3 is the schematic flow sheet of video-signal transmission method embodiment of the present invention;
Fig. 4 is the structural representation of video signal transmission system embodiment of the present invention.
Embodiment
Each embodiment for vision signal backup method of the present invention and system and transmission method and system is described in detail below.
As shown in Figure 1, the schematic flow sheet for vision signal backup method embodiment of the present invention, comprises step:
Step S101: set up the channel video signal between signal source-signal-processing board-display unit, and be made as the backup channel video signal of main video signal passage, wherein, main video signal passage is the channel video signal between signal source-master control borad-display unit;
Signal-processing board can be newly established, and can be also the signal-processing board itself existing with in processor.Channel video signal between signal source-signal-processing board-display unit refers to the channel video signal that signal source, signal-processing board, display unit connect successively.Equally, the channel video signal between signal source-master control borad-display unit refers to the channel video signal that signal source, master control borad, display unit connect successively.The channel video signal is here signal transmission passage, not necessarily physical channel.In one embodiment, signal source can be connected with signal-processing board, master control borad respectively, master control borad is connected with display unit with signal-processing board respectively.Master control borad, for the signal of signal source is processed, when some signal master control borad cannot be processed, can be processed by signal-processing board.The now effect of signal-processing board is the effect of processing signals.In the present embodiment, by setting up the channel video signal between signal source-signal-processing board-display unit, for the signal of backup signal resource.In addition, display unit can refer to projector, display etc.
Step S102: the vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, by master control borad, processed and outputed to display unit and show, the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
When first via video signal source is not lost, can be processed by master control borad, and be transferred to display unit and show.The second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes, and refers to here with the processing of master control borad and synchronizes, and object is to be switched in order to keep one's powder dry, and due to synchronously, can not cause video playback chaotic during switching.
Step S103: the state of master control borad transmission first via vision signal in Real-Time Monitoring main video signal passage;
The state of monitoring first via vision signal, refers to the situation that whether goes out active.The situation that goes out active has a variety of, such as, dropout between signal source and master control borad, may be also when master control borad is processed, to cause dropout, may be also to occur dropout etc. between master control borad and display unit.
Step S104: when first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, and the signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit.
When finding that first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, because the vision signal in backup signal passage is synchronizeed with first via vision signal, therefore from display unit, it seems and realized switching without any difference.Thereby realized the backup to master control borad signal.
Such as, master control borad signal intensity can be detected, and produces interruption.In interrupt function, carry out signal hand-off process.After master control borad abnormal signal, use immediately signal plate to open a window, the content that this window shows is the same with master control borad signal displaying contents, so user seems not change.In addition, the inventive method can realize in master control borad.
In an embodiment, master control borad is single desktop input master control borad therein.In conventional art, processor generally all adopts single desktop input master control borad, therefore adopts the inventive method, can, in the situation that not changing single desktop input master control borad, just can realize signal backup.And conventional art need to be replaced by single desktop input master control borad two desktop master control borads, by two paths of signals, input master control borad and realize backup, so the present invention program saved cost, and implemented conveniently.
In an embodiment, with signal-processing board, realize signal backup therein, what generally use signal-processing board realization is windowing function, has the software of control to issue and windows after parameter, then in display unit, shows.Owing to itself being provided with signal-processing board in some processor, object is for processing signals.When the signal-processing board therefore having at itself arranges backup functionality, during operation, need to consider whether whether this signal-processing board does other things in operation, window.Therefore,, if while using the signal-processing board that processor has originally, used under the prerequisite of need to not window at signal-processing board, must meet three conditions: master control borad collocation signal-processing board; Current demand signal disposable plates is not windowed; Master source is identical with backup signal resource.Specific as follows:
Before in Real-Time Monitoring main video signal passage, master control borad transmits the state step of first via vision signal, also comprise step: judge that whether signal-processing board is in the state of windowing, if not, enter the state step of master control borad transmission first via vision signal in Real-Time Monitoring main video signal passage.If signal-processing board in the state of windowing, can not be used this signal-processing board to carry out signal backup.
The present invention also provides a kind of vision signal standby system, and as shown in Figure 2, the structural representation for the present invention program's vision signal standby system embodiment, comprising:
Signalling channel is set up module 210, for setting up the channel video signal between signal source-signal-processing board-display unit, and be made as the backup channel video signal of main video signal passage, wherein, main video signal passage is the channel video signal between signal source-master control borad-display unit;
Vision signal is divided module 220, for the vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, by master control borad, processed and outputed to display unit and show, the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
Monitoring modular 230, for the state of Real-Time Monitoring main video signal passage master control borad transmission first via vision signal;
Switch display module 240, for when first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, and the signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit.
In an embodiment, before detection module, also comprise therein:
The judge module of windowing, for judging that whether signal-processing board is in the state of windowing, when signal-processing board is not windowed, connection detection module.
In an embodiment, master control borad is single desktop input master control borad therein.
Vision signal standby system of the present invention and vision signal backup method of the present invention are one to one, correlation technique feature in above-mentioned vision signal backup method embodiment and technique effect thereof are all applicable to, in vision signal standby system embodiment, not repeat them here.
The present invention also provides a kind of video-signal transmission method, and as shown in Figure 3, the schematic flow sheet for video-signal transmission method embodiment of the present invention, comprising:
Step S301: set up backup channel video signal between signal source-signal-processing board-display unit and the main video signal passage between signal source-master control borad-display unit;
Signal-processing board can be newly established, and can be also the signal-processing board itself existing with in processor.Channel video signal between signal source-signal-processing board-display unit refers to the channel video signal that signal source, signal-processing board, display unit connect successively.Equally, the channel video signal between signal source-master control borad-display unit refers to the channel video signal that signal source, master control borad, display unit connect successively.The channel video signal is here signal transmission passage, not necessarily physical channel.In one embodiment, signal source can be connected with signal-processing board, master control borad respectively, master control borad is connected with display unit with signal-processing board respectively.Master control borad, for the signal of signal source is processed, when some signal master control borad cannot be processed, can be processed by signal-processing board.The now effect of signal-processing board is the effect of processing signals.In the present embodiment, by setting up backup channel video signal between signal source-signal-processing board-display unit and the main video signal passage between signal source-master control borad-display unit, can realize the switching between two passages, thereby realize signal, switch.In addition, display unit can refer to projector, display etc.
Step S302: the vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, and the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
When first via video signal source is not lost, by master control borad, processed, and be transferred to display unit and show.The second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes, and refers to here with the processing of master control borad and synchronizes, and object is to be switched in order to keep one's powder dry, and due to synchronously, can not cause video playback chaotic during switching.
Step S303: by main video signal passage by first via video signal transmission to display unit, and the state of master control borad transmission first via vision signal in Real-Time Monitoring main video signal passage;
The state of monitoring first via vision signal, refers to the situation that whether goes out active.The situation that goes out active has a variety of, such as, dropout between signal source and master control borad, may be also when master control borad is processed, to cause dropout, may be also to occur dropout etc. between master control borad and display unit.
Step S304: when first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit, when first via vision signal is recovered, the channel video signal of current transmission video signal is switched back to main video signal passage.
When finding that first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, because the vision signal in backup signal passage is synchronizeed with first via vision signal, therefore from display unit, it seems and realized switching without any difference.Although first via vision signal is lost, master control borad is still processed signal.Therefore, when first via vision signal is recovered, the channel video signal of current transmission video signal is switched back to main video signal passage, it is synchronous that vision signal remains.Thereby realized freely switching of two passages, solved the problem that vision signal is easily lost.
The present embodiment can be switched to signal-processing board signal in the situation that of master control borad dropout, when master control borad signal recovers, can automatically switch back.Master control borad signal intensity can be detected, and produces interruption.In interrupt function, carry out signal hand-off process.After master control borad abnormal signal, use immediately signal plate to open a window, the content that this window shows is the same with master control borad signal displaying contents, so user seems not change.
In an embodiment, master control borad is single desktop input master control borad therein.In conventional art, processor generally all adopts single desktop input master control borad, therefore adopts the inventive method, can, in the situation that not changing single desktop input master control borad, just can realize signal backup.And conventional art need to be replaced by single desktop input master control borad two desktop master control borads, by two paths of signals, input master control borad and realize backup, so the present invention program saved cost, and implemented conveniently.
In an embodiment, with signal-processing board, realize signal backup therein, what generally use signal-processing board realization is windowing function, has the software of control to issue and windows after parameter, then in display unit, shows.Owing to itself being provided with signal-processing board in some processor, object is for processing signals.When the signal-processing board therefore having at itself arranges backup functionality, during operation, need to consider whether whether this signal-processing board does other things in operation, window.Therefore,, if while using the signal-processing board that processor has originally, used under the prerequisite of need to not window at signal-processing board, must meet three conditions: master control borad collocation signal-processing board; Current demand signal disposable plates is not windowed; Master source is identical with backup signal resource.Specific as follows:
Before in Real-Time Monitoring main video signal passage, master control borad transmits the state step of first via vision signal, also comprise step: judge that whether signal-processing board is in the state of windowing, if not, enter the state step of master control borad transmission first via vision signal in Real-Time Monitoring main video signal passage.If signal-processing board in the state of windowing, can not be used this signal-processing board to carry out signal backup.
The present invention also provides a kind of video signal transmission system, and as shown in Figure 4, the structural representation for the present invention program's video signal transmission system embodiment, comprising:
Path Setup module 410, for setting up backup channel video signal between signal source-signal-processing board-display unit and the main video signal passage between signal source-master control borad-display unit;
Division of signal module 420, for the vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, and the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
Signal handover module 440, for when first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit, when first via vision signal is recovered, the channel video signal of current transmission video signal is switched back to main video signal passage.
In an embodiment, signal-processing board is single desktop input master control borad therein.
Video signal transmission system of the present invention and video-signal transmission method of the present invention are one to one, correlation technique feature in above-mentioned video-signal transmission method embodiment and technique effect thereof are all applicable to, in video signal transmission system embodiment, not repeat them here.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a vision signal backup method, is characterized in that, comprising:
Set up the channel video signal between signal source-signal-processing board-display unit, and be made as the backup channel video signal of main video signal passage, wherein, described main video signal passage is the channel video signal between signal source-master control borad-display unit;
The vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, by master control borad, processed and outputed to display unit and show, the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
In Real-Time Monitoring main video signal passage, master control borad transmits the state of described first via vision signal;
When first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, the signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit.
2. vision signal backup method according to claim 1, is characterized in that, before master control borad transmits the state step of described first via vision signal in described Real-Time Monitoring main video signal passage, also comprises step:
Judge that whether described signal-processing board is in the state of windowing, if not, enter the state step that master control borad in Real-Time Monitoring main video signal passage transmits described first via vision signal.
3. vision signal backup method according to claim 1 and 2, is characterized in that, described master control borad is single desktop input master control borad.
4. a video-signal transmission method, is characterized in that, comprising:
Set up backup channel video signal between signal source-signal-processing board-display unit and the main video signal passage between signal source-master control borad-display unit;
The vision signal of signal source is divided into identical two-path video signal, and first via vision signal outputs to master control borad by main video signal passage, and the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
By main video signal passage by first via video signal transmission to display unit, and in Real-Time Monitoring main video signal passage, master control borad transmits the state of described first via vision signal;
When first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit, when first via vision signal is recovered, the channel video signal of current transmission video signal is switched back to main video signal passage.
5. video-signal transmission method according to claim 4, is characterized in that, described signal-processing board is single desktop input master control borad.
6. a vision signal standby system, is characterized in that, comprising:
Signalling channel is set up module, for setting up the channel video signal between signal source-signal-processing board-display unit, and be made as the backup channel video signal of main video signal passage, wherein, described main video signal passage is the channel video signal between signal source-master control borad-display unit;
Vision signal is divided module, for the vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, by master control borad, processed and outputed to display unit and show, the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
Monitoring modular, transmits the state of described first via vision signal for Real-Time Monitoring main video signal passage master control borad;
Switch display module, for when first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, and the signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit.
7. vision signal standby system according to claim 6, is characterized in that, before described detection module, also comprises:
The judge module of windowing, for judging that whether described signal-processing board is in the state of windowing, when signal-processing board is not windowed, connection detection module.
8. according to the vision signal standby system described in claim 6 or 7, it is characterized in that, described master control borad is single desktop input master control borad.
9. a video signal transmission system, is characterized in that, comprising:
Path Setup module, for setting up backup channel video signal between signal source-signal-processing board-display unit and the main video signal passage between signal source-master control borad-display unit;
Division of signal module, for the vision signal of signal source is divided into identical two-path video signal, first via vision signal outputs to master control borad by main video signal passage, and the second tunnel vision signal outputs to signal-processing board by backup channel video signal and synchronously processes;
State monitoring module, for by main video signal passage by first via video signal transmission to display unit, and in Real-Time Monitoring main video signal passage, master control borad transmits the state of described first via vision signal;
Signal handover module, for when first via vision signal is lost, the channel video signal of current transmission video signal is switched to backup channel video signal, signal-processing board in backup channel video signal exports the second tunnel vision signal of synchronously processing to display unit, when first via vision signal is recovered, the channel video signal of current transmission video signal is switched back to main video signal passage.
10. video signal transmission system according to claim 9, is characterized in that, described signal-processing board is single desktop input master control borad.
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