CN104168426A - Multipath video mosaic display synchronization method and device - Google Patents
Multipath video mosaic display synchronization method and device Download PDFInfo
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Abstract
The invention discloses a multipath video mosaic display synchronization method. The method comprises obtaining N paths of video signals, N being an integer larger than or equal to 2, each path of video signal comprising synchronization information; extracting the synchronization information in the video signals and controlling the N paths of video signals to be in synchronous display according to the synchronization information; or obtaining N paths of input signals, wherein each path of input signal comprises a video signal and a synchronization signal, the synchronization signal comprising synchronization information matched with the video signal; extracting the synchronization information in the synchronization signals; and controlling the N paths of video signals to be in synchronous display according to the synchronization information. An embodiment of the invention also provides a corresponding device. According to the technical scheme, the influence due to inaccurate timing of the system and network transmission delay can be prevented, thereby avoiding synchronous drift and realizing more accurate synchronous display.
Description
Technical field
The present invention relates to communication technical field, be specifically related to Multi-path synchronous method and device that a kind of video-splicing shows.
Background technology
In display system, in order to obtain vision presence, had higher requirement in visual angle and video resolution.In some application scenarios, need to be by showing again after multi-channel video signal splicing, so that higher resolution and larger display area to be provided.For example, by the HD(High Definition of multichannel, resolution reaches the high-definition signal of 1920x1080) or UHD(Ultra High Definition, the ultra high-definition signal that resolution 3840x2160 reaches) video, be spliced into resolution and reach 8Kx4K, the ultrahigh resolution video of 16Kx8K.During multi-channel video splicing, each road playback equipment output video will keep synchronously, to guarantee that ultrahigh resolution video is in synchronism and the picture integrality of time domain.
In prior art, synchronous by software control multichannel playback equipment output video.Each road HD or UHD playback equipment connect by network, and wherein one is set as main playback equipment, and other is made as from playback equipment.By main playback equipment, sent the heartbeat signal of a video output, other each road playback equipment is according to heartbeat signal, outputting video signal, thus realize the synchronous of each road vision signal.
But, due to problems such as the inaccuracy of timing in playback equipment and network transfer delays, there will be synchronous drift, synchronous error is larger, and when serious, synchronous drift value can surpass 1-2 frame.
Summary of the invention
Multi-path synchronous method and device that the embodiment of the present invention provides a kind of video-splicing to show, to solve the larger technical problem of synchronous error in existing multi-channel video joining method.
A kind of Multi-path synchronous method that first aspect present invention provides video-splicing to show, comprising:
Obtain the vision signal on N road, N is more than or equal to 2 integer, comprises synchronizing information described in each road in vision signal; Extract the described synchronizing information in described vision signal, according to described synchronizing information, control described N road vision signal simultaneous display;
Or, obtain the input signal on N road, wherein described in each road, input signal comprises vision signal and synchronizing signal, and described synchronizing signal comprises the synchronizing information of mating with described vision signal; Extract the described synchronizing information in described synchronizing signal; According to described synchronizing information, control described N road vision signal simultaneous display.
A kind of Multi-path synchronous method that second aspect present invention provides video-splicing to show, comprising:
In vision signal to be exported, embed synchronizing information, the described vision signal that has comprised synchronizing information is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information, N is more than or equal to 2 integer;
Or for vision signal to be exported generates corresponding synchronizing signal, described synchronizing signal comprises the synchronizing information of mating with described vision signal; The output signal that has comprised vision signal and synchronizing signal is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information.
Third aspect present invention provides a kind of display unit, comprising:
The first acquisition module, for obtaining the vision signal on N road, N is more than or equal to 2 integer, comprises synchronizing information described in each road in vision signal; First detection module, for extracting the described synchronizing information of the vision signal that described the first acquisition module obtains; The first control module, controls for the synchronizing information of extracting according to described first detection module the N road vision signal simultaneous display that described the first acquisition module obtains;
Or comprise:
The second acquisition module, for obtaining the input signal on N road, wherein each road input signal comprises vision signal and synchronizing signal, described synchronizing signal comprises the synchronizing information of mating with described vision signal; The second detection module, for extracting the described synchronizing information of the synchronizing signal that described the second acquisition module obtains; The second control module, controls for the described synchronizing information of obtaining according to described the second detection module the N road vision signal simultaneous display that described the second acquisition module obtains.
Fourth aspect present invention provides a kind of playing device, comprising:
The first processing module, embeds synchronizing information for the vision signal to be exported; The first sending module, for the described vision signal that has comprised synchronizing information is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information, N is more than or equal to 2 integer;
Or comprise:
The second processing module, is used to vision signal to be exported to generate corresponding synchronizing signal, and described synchronizing signal comprises the synchronizing information of mating with described vision signal; The second sending module, for the output signal that has comprised vision signal and synchronizing signal is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information.
Fifth aspect present invention provides a kind of synchronization video interface, and this synchronization video interface has increased a synchronous signal line on the basis of elementary video interface; The synchronizing signal that described synchronous signal line generates for transmitting described playing device as arbitrary in claim 13 to 15, described synchronizing signal comprises the synchronizing information corresponding with each frame of the vision signal of transmitting.
The embodiment of the present invention adopts and in vision signal, comprises synchronizing information, or in input signal, comprise the synchronizing signal with vision signal binding, in synchronizing signal, comprise synchronizing information, display unit is controlled the technical scheme of the N road vision signal simultaneous display of obtaining according to described synchronizing information, can avoid the impact of timing inaccuracy and network transfer delay, realize more accurately the simultaneous display of multi-channel video signal.
Accompanying drawing explanation
Fig. 1 a and 1b are the flow charts of the Multi-path synchronous method that shows of the video-splicing that provides of the embodiment of the present invention one;
Fig. 2 is the flow chart of two-path video signal simultaneous display in application scenarios of the present invention;
Fig. 3 a and 3b are the flow charts of the Multi-path synchronous method that shows of the video-splicing that provides of the embodiment of the present invention two;
Fig. 4 and Fig. 5 are the schematic diagrames of several vision signals;
Fig. 6 is the schematic diagram of the MSYNC synchronizing signal of the embodiment of the present invention;
Fig. 7 a and 7b are the schematic diagrames of the display unit that provides of the embodiment of the present invention three;
Fig. 8 a and 8b are the schematic diagrames of the playing device that provides of the embodiment of the present invention four;
Fig. 9 is the schematic diagram of the synchronization video interface that provides of the embodiment of the present invention five.
Embodiment
The embodiment of the present invention provides a kind of Multi-path synchronous method of video-splicing demonstration, can realize the simultaneous display of accurate multi-channel video.The embodiment of the present invention also provides corresponding device, comprises display unit and playing device.Below be elaborated respectively.
Embodiment mono-,
A kind of Multi-path synchronous method that the embodiment of the present invention provides video-splicing to show.
Please refer to Fig. 1 a, described method comprises:
101, obtain the vision signal on N road, N is more than or equal to 2 integer, comprises synchronizing information described in each road in vision signal;
102, extract the described synchronizing information in described vision signal, according to described synchronizing information, control described N road vision signal simultaneous display.
Or, please refer to Fig. 1 b, described method also can comprise:
201, obtain the input signal on N road, wherein described in each road, input signal comprises vision signal and synchronizing signal, and described synchronizing signal comprises the synchronizing information of mating with described vision signal;
202, extract the described synchronizing information in described synchronizing signal; According to described synchronizing information, control described N road vision signal simultaneous display.
Embodiment of the present invention method is applied to such scene: two above ends of playing send a road vision signal separately to display end, the above vision signal of two-way of being obtained by display end splicing and simultaneous display.
In order to realize accurate simultaneous display, the present embodiment increases synchronizing information in input signal.
In a kind of execution mode, play end before outputting video signal, first in vision signal, embed synchronizing information, then the vision signal that has comprised synchronizing information is sent to display end.
In another kind of execution mode, play end and export in the signal of display end, comprise two kinds of signals, the one, vision signal, another is the synchronizing signal corresponding with vision signal, this synchronizing signal comprises the synchronizing information corresponding with each frame of described vision signal.Optionally, the bit with a location number in described synchronizing signal represents a synchronizing information, first bit of each synchronizing information, with level trailing edge of frame synchronization (VSYNC) signal in described vision signal or electrical level rising along concordant.
Described synchronizing information is for identifying the displaying time of frame of vision signal, for display end identification, for realizing the simultaneous display between multi-channel video signal, with of the prior art for realizing the information that vision signal and audio signal synchronize, be diverse.Each frame of one tunnel vision signal identifies by different synchronizing informations respectively.The synchronizing information of a plurality of frames that need simultaneous display in the vision signal of N road matches, said match refer to the matching relationship with agreement, can be for example equal.In concrete application, this synchronizing information can be timestamp information, certainly, can be also other appointed information.
Display end is received after vision signal, first carries out buffer memory, is specially the frame of the setting number of arbitrary road vision signal is carried out to buffer memory.Can establish an independently buffer unit for each road vision signal.When each frame of vision signal is sent to display end successively or before sending, extract in each frame of each road vision signal, comprise for indicating the synchronizing information of the displaying time of frame, or, extract in described synchronizing signal for indicating the synchronizing information of displaying time of each frame of described vision signal.
Display end compares the synchronizing information of extraction, searches each frame that synchronizing information matches.Thereby the frame that the synchronizing information in the vision signal of N road is matched is sent to display and shows simultaneously.With this, accurately realize the simultaneous display of each road vision signal.
Below, the application scenarios shown in Fig. 2 of take describes said method as example:
In this example, two playing devices are exported a road vision signal separately to display unit, and, during output, in video output interface, for vision signal to be exported, synchronously embed synchronizing information;
Display unit receives after two-path video signal, this two-path video signal is saved in respectively independently in buffer memory, and synchronously detects the synchronizing information comprising in vision signal;
The display that simultaneously sends to display unit at each frame that the synchronizing information in two-path video signal is matched shows, realizes the simultaneous display of two-path video signal.
Above, a kind of Multi-path synchronous method that the embodiment of the present invention provides video-splicing to show, employing comprises synchronizing information in vision signal, or in input signal, comprise the synchronizing signal with video binding, in synchronizing signal, comprise synchronizing information, display unit is controlled the technical scheme of the N road vision signal simultaneous display of obtaining according to described synchronizing information, can avoid the impact of timing inaccuracy and network transfer delay, realizes more accurately the simultaneous display of multi-channel video signal.
Embodiment bis-,
A kind of Multi-path synchronous method that the embodiment of the present invention provides video-splicing to show.
Please refer to Fig. 3 a, described method comprises:
301, in vision signal to be exported, embed synchronizing information;
302, the described vision signal that has comprised synchronizing information is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information, N is more than or equal to 2 integer;
Or, please refer to Fig. 3 b, described method also can comprise:
401, for vision signal to be exported, generate corresponding synchronizing signal, described synchronizing signal comprises the synchronizing information of mating with described vision signal;
402, the output signal that has comprised vision signal and synchronizing signal is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information.
In order to realize accurate simultaneous display, the present embodiment increases synchronizing information in input signal.
In a kind of execution mode, play end before outputting video signal, first in vision signal, embed synchronizing information, then the vision signal that has comprised synchronizing information is sent to display end.
In another kind of execution mode, play end before outputting video signal, generate the synchronizing signal corresponding with vision signal, this synchronizing signal comprises the synchronizing information of mating with described vision signal.
Described synchronizing information is for identifying the displaying time of frame of vision signal, for display end identification, for realizing the simultaneous display between multi-channel video signal, with of the prior art for realizing the information that vision signal and audio signal synchronize, be diverse.Each frame of one tunnel vision signal identifies by different synchronizing informations respectively.In the vision signal of N road, need the synchronizing information of a plurality of frames of simultaneous display to match, said match refer to the matching relationship with agreement, can be for example equal.In concrete application, this synchronizing information can be timestamp, can certainly be other appointed information.
Then, the vision signal that has comprised synchronizing information can be outputed to display end, or, the output signal that has comprised vision signal and synchronizing signal is outputed to display end, by display end, according to described synchronizing information, control N road vision signal simultaneous display.Content can be with reference to the embodiment shown in figure 1 more specifically.
In a kind of execution mode, described in vision signal to be exported, embed synchronizing information and comprise: for each frame of vision signal to be exported generates corresponding synchronizing information, described synchronizing information is for indicating the displaying time of frame; Described synchronizing information is embedded in described vision signal to be exported, makes to comprise corresponding synchronizing information in each frame of described vision signal.
In another kind of execution mode, described comprises for vision signal to be exported generates corresponding synchronizing signal: generate synchronizing signal, described synchronizing signal comprises the synchronizing information corresponding with each frame of vision signal to be exported, and described synchronizing information is for indicating the displaying time of frame; Described synchronizing signal and described vision signal to be exported are bound, as output signal.
Below an application scenarios example, to generating the step of synchronizing signal, describe.
As shown in Figure 4 and Figure 5, the vision signal of elementary video interface generally comprises: VSYNC, HSYNC, DEN, R, G, B, CLK.Wherein VSYNC is frame synchronizing signal, and HSYNC is line synchronizing signal, and DEN is valid data enable signal, R, and G, B is video data, CLK is clock.Elementary video interface can provide row synchronous for single channel vision signal, row synchronizing signal.
In the present embodiment, as shown in Figure 6, the video interface of playing device improves on the basis of elementary video interface, can comprise a kind of MSYNC synchronizing signal, each frame that this MSYNC synchronizing signal is vision signal provides synchronized timestamp information, to realize synchronous between multi-channel video interface.By the synchronizing information that MSYNC synchronizing signal is comprised, be embedded in vision signal, or, described synchronizing signal and described vision signal to be exported are bound, realize and in output signal, increase timestamp information as synchronizing information.
As can be seen from the figure, in MSYNC synchronizing signal, with a certain number of bit, represent a synchronizing information, first bit of each synchronizing information, with level trailing edge of VSYNC signal in described vision signal or electrical level rising along concordant.Synchronizing information is specifically as follows synchronized timestamp information, supposes that this synchronized timestamp information is M bit,, by M position low and high level, represent timestamp information, obviously, the total length of this M bit, is less than the length sum of a low level and a high level in VSYNC signal.
Thereby, at display end, can carry out buffer memory to the multi-channel video signal of input, buffer memory frame number is 2 or more; Meanwhile, can from MSYNC synchronizing signal, obtain synchronizing information; Synchronizing information to multi-channel video is mated, and frame synchronization and the row of according to matching result, controlling each road vision signal are synchronous; Because MSYNC synchronizing signal is clock stratum, therefore can realize the Complete Synchronization of the clock stratum of each road vision signal.
Above, a kind of Multi-path synchronous method that the embodiment of the present invention provides video-splicing to show, employing comprises synchronizing information by playing end in vision signal, or in input signal, comprise the synchronizing signal with video binding, in synchronizing signal, comprise synchronizing information, display unit is controlled the technical scheme of the N road vision signal simultaneous display of obtaining according to described synchronizing information, can avoid the impact of timing inaccuracy and network transfer delay, realize more accurately the simultaneous display of multi-channel video signal.
Embodiment tri-,
The embodiment of the present invention provides a kind of display unit.
Please refer to Fig. 7 a, described device can comprise:
The first acquisition module 7101, for obtaining the vision signal on N road, N is more than or equal to 2 integer, comprises synchronizing information described in each road in vision signal;
First detection module 7102, for extracting the described synchronizing information of the vision signal that described the first acquisition module obtains;
The first control module 7103, controls for the synchronizing information of extracting according to described first detection module the N road vision signal simultaneous display that described the first acquisition module obtains.
Or, please refer to Fig. 7 b, described device also can comprise:
The second acquisition module 7201, for obtaining the input signal on N road, wherein each road input signal comprises vision signal and corresponding synchronizing signal, described synchronizing signal comprises the synchronizing information of mating with described vision signal;
The second detection module 7202, for extracting the described synchronizing information of the synchronizing signal that described the second acquisition module obtains;
The second control module 7203, controls each road vision signal simultaneous display for the described synchronizing information of obtaining according to described the second detection module.
Wherein, described first detection module 7102, specifically for extract in each frame of described vision signal, comprise for indicating the synchronizing information of the displaying time of frame;
Described the second detection module 7202, specifically for extract in described synchronizing signal, comprise for indicating the synchronizing information of displaying time of each frame of described vision signal;
Described the first control module 7103, the frame matching specifically for the synchronizing information in the N road vision signal that described the first acquisition module is obtained is sent to display unit simultaneously and shows;
Described the second control module 7203, the frame matching specifically for the synchronizing information in the N road vision signal that described the second acquisition module is obtained is sent to display unit simultaneously and shows.
More detailed description please refer to the description in embodiment mono-and embodiment bis-.
Above, the embodiment of the present invention provides a kind of display unit, this device can be controlled described N road vision signal simultaneous display according to the synchronizing information in the N road input signal extracting, thereby avoid the impact of timing inaccuracy and network transfer delay, realize more accurately the simultaneous display of multi-channel video signal.
Embodiment tetra-,
The embodiment of the present invention provides a kind of playing device.
Please refer to Fig. 8 a, described playing device can comprise:
The first processing module 8101, embeds synchronizing information for the vision signal to be exported;
The first sending module 8102, for the described vision signal that has comprised synchronizing information is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information, N is more than or equal to 2 integer;
Or, please refer to Fig. 8 b, described playing device also can comprise:
The second processing module 8201, is used to vision signal to be exported to generate corresponding synchronizing signal, and described synchronizing signal comprises the synchronizing information of mating with described vision signal;
The second sending module 8202, for the output signal that has comprised vision signal and synchronizing signal is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information.
Optionally, described the first processing module 8101 may further include:
Generation unit, is used to the synchronizing information corresponding to each frame of vision signal to be exported, and described synchronizing information is for indicating the displaying time of frame;
Processing unit, for described synchronizing information being embedded into described vision signal to be exported, makes to embed corresponding synchronizing information in each frame of described vision signal.
Optionally, described the second processing module 8201 may further include:
Generation unit, for generating synchronizing signal, described synchronizing signal comprises the synchronizing information corresponding with each frame of vision signal to be exported, described synchronizing information is for indicating the displaying time of frame;
Processing unit, for described synchronizing signal and described vision signal to be exported are bound, as output signal.
Physical entity corresponding to the described first or second sending module can be video interface.
More detailed description please refer to the description in embodiment mono-and embodiment bis-.
Above, the embodiment of the present invention provides a kind of playing device, this device can increase synchronizing information in output signal, so that display unit is controlled N road vision signal simultaneous display according to the synchronizing information in the N road vision signal of extracting, thereby avoid the impact of timing inaccuracy and network transfer delay, realize more accurately the simultaneous display of multi-channel video signal.
Embodiment tetra-,
Please refer to Fig. 9, the embodiment of the present invention provides a kind of synchronization video interface, and this synchronization video interface has increased a synchronous signal line 902 on the basis of elementary video interface 901;
The synchronizing signal that described synchronous signal line 902 generates for transmitting playing device, described synchronizing signal comprises the synchronizing information corresponding with each frame of the vision signal of transmitting.Described playing device refers to the playing device that embodiment tri-describes.
Optionally, first bit of a synchronizing information in described synchronizing signal, with level trailing edge of VSYNC signal in described vision signal or electrical level rising along concordant.
This synchronization video interface can be the video interface of embodiment tri-playing devices, can be used for being connected with display unit in embodiment bis-.
More detailed description please refer to the description in embodiment mono-and embodiment bis-.
Above, the embodiment of the present invention provides a kind of synchronization video interface, this interface can increase synchronizing information in output signal, so that display end extracts the synchronizing information embedding in multi-channel video signal, according to synchronizing information, control each road vision signal simultaneous display, thereby avoid the impact of timing inaccuracy and network transfer delay, realize more accurately the simultaneous display of multi-channel video signal.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment can complete by hardware, also can complete by the relevant hardware of program command, this program can be stored in a computer-readable recording medium, and storage medium can comprise: read-only memory, random-access memory, disk or CD etc.
Multi-path synchronous method and device that a kind of the video-splicing above embodiment of the present invention being provided shows are described in detail, but the explanation of above embodiment is just understood method of the present invention and core concept thereof for helping, and should not be construed as limitation of the present invention.In the technical scope that those skilled in the art disclose in the present invention, the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
Claims (16)
1. the Multi-path synchronous method that video-splicing shows, is characterized in that, comprising:
Obtain the vision signal on N road, N is more than or equal to 2 integer, comprises synchronizing information described in each road in vision signal; Extract the described synchronizing information in described vision signal, according to described synchronizing information, control described N road vision signal simultaneous display;
Or, obtain the input signal on N road, wherein described in each road, input signal comprises vision signal and synchronizing signal, and described synchronizing signal comprises the synchronizing information of mating with described vision signal; Extract the described synchronizing information in described synchronizing signal; According to described synchronizing information, control described N road vision signal simultaneous display.
2. method according to claim 1, is characterized in that:
Described synchronizing information is timestamp information.
3. method according to claim 1, is characterized in that:
Described synchronizing information in the described vision signal of described extraction comprises: extract in each frame of described vision signal, comprise for indicating the synchronizing information of the displaying time of frame;
Described synchronizing information in the described synchronizing signal of described extraction comprises: extract in described synchronizing signal, comprise for indicating the synchronizing information of displaying time of each frame of described vision signal.
4. method according to claim 1, is characterized in that, described according to described synchronizing information, control described N road vision signal simultaneous display and comprises:
The frame that synchronizing information in the vision signal of N road is matched is sent to display simultaneously and shows.
5. method according to claim 1, is characterized in that:
First bit of synchronizing information in described synchronizing signal, with level trailing edge of frame synchronization VSYNC signal in described vision signal or electrical level rising along concordant.
6. the Multi-path synchronous method that video-splicing shows, is characterized in that, comprising:
In vision signal to be exported, embed synchronizing information, the described vision signal that has comprised synchronizing information is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information, N is more than or equal to 2 integer;
Or for vision signal to be exported generates corresponding synchronizing signal, described synchronizing signal comprises the synchronizing information of mating with described vision signal; The output signal that has comprised vision signal and synchronizing signal is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information.
7. method according to claim 6, is characterized in that:
Described synchronizing information is specially timestamp information.
8. according to the method described in claim 6 or 7, it is characterized in that, described in vision signal to be exported, embed synchronizing information and comprise:
For each frame of vision signal to be exported generates corresponding synchronizing information, described synchronizing information is for indicating the displaying time of frame;
Described synchronizing information is embedded in described vision signal to be exported, makes to comprise corresponding synchronizing information in each frame of described vision signal.
9. according to the method described in claim 6 or 7, it is characterized in that, described comprises for vision signal to be exported generates corresponding synchronizing signal:
Generate synchronizing signal, described synchronizing signal comprises the synchronizing information corresponding with each frame of vision signal to be exported, and described synchronizing information is for indicating the displaying time of frame;
Described synchronizing signal and described vision signal to be exported are bound, as output signal.
10. method according to claim 9, is characterized in that:
First bit of synchronizing information in described synchronizing signal, with level trailing edge of frame synchronization VSYNC signal in described vision signal or electrical level rising along concordant.
11. 1 kinds of display unit, is characterized in that, comprising:
The first acquisition module, for obtaining the vision signal on N road, N is more than or equal to 2 integer, comprises synchronizing information described in each road in vision signal;
First detection module, for extracting the described synchronizing information of the vision signal that described the first acquisition module obtains;
The first control module, controls for the synchronizing information of extracting according to described first detection module the N road vision signal simultaneous display that described the first acquisition module obtains;
Or comprise:
The second acquisition module, for obtaining the input signal on N road, wherein each road input signal comprises vision signal and synchronizing signal, described synchronizing signal comprises the synchronizing information of mating with described vision signal;
The second detection module, for extracting the described synchronizing information of the synchronizing signal that described the second acquisition module obtains;
The second control module, controls for the described synchronizing information of obtaining according to described the second detection module the N road vision signal simultaneous display that described the second acquisition module obtains.
12. display unit according to claim 11, is characterized in that:
Described first detection module, specifically for extract in each frame of described vision signal, comprise for indicating the synchronizing information of the displaying time of frame;
Described the second detection module, specifically for extract in described synchronizing signal, comprise for indicating the synchronizing information of displaying time of each frame of described vision signal;
Described the first control module, the frame matching specifically for the synchronizing information in the N road vision signal that described the first acquisition module is obtained is sent to display unit simultaneously and shows;
Described the second control module, the frame matching specifically for the synchronizing information in the N road vision signal that described the second acquisition module is obtained is sent to display unit simultaneously and shows.
13. 1 kinds of playing devices, is characterized in that, comprising:
The first processing module, embeds synchronizing information for the vision signal to be exported;
The first sending module, for the described vision signal that has comprised synchronizing information is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information, N is more than or equal to 2 integer;
Or comprise:
The second processing module, is used to vision signal to be exported to generate corresponding synchronizing signal, and described synchronizing signal comprises the synchronizing information of mating with described vision signal;
The second sending module, for the output signal that has comprised vision signal and synchronizing signal is outputed to display unit, so that described display unit is controlled the N road vision signal simultaneous display of receiving according to described synchronizing information.
14. playing devices according to claim 13, is characterized in that, described the first processing module comprises:
Generation unit, is used to each frame of vision signal to be exported to generate corresponding synchronizing information, and described synchronizing information is for indicating the displaying time of frame;
Processing unit, for described synchronizing information being embedded into described vision signal to be exported, makes to comprise corresponding synchronizing information in each frame of described vision signal.
15. playing devices according to claim 13, is characterized in that, described the second processing module comprises:
Generation unit, for generating synchronizing signal, described synchronizing signal comprises the synchronizing information corresponding with each frame of vision signal to be exported, described synchronizing information is for indicating the displaying time of frame;
Processing unit, for described synchronizing signal and described vision signal to be exported are bound, as output signal.
16. 1 kinds of synchronization video interfaces, is characterized in that, this synchronization video interface has increased a synchronous signal line on the basis of elementary video interface;
The synchronizing signal that described synchronous signal line generates for transmitting described playing device as arbitrary in claim 13 to 15, described synchronizing signal comprises the synchronizing information corresponding with each frame of the vision signal of transmitting.
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| CN112463095A (en) * | 2020-12-04 | 2021-03-09 | 威创集团股份有限公司 | Multi-signal window synchronous windowing display method and device |
| WO2023088211A1 (en) * | 2021-11-22 | 2023-05-25 | 华为技术有限公司 | Display picture synchronization method and system, and electronic device |
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