CN105407252A - Method and device for synchronous display of pictures - Google Patents
Method and device for synchronous display of pictures Download PDFInfo
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- CN105407252A CN105407252A CN201510801375.2A CN201510801375A CN105407252A CN 105407252 A CN105407252 A CN 105407252A CN 201510801375 A CN201510801375 A CN 201510801375A CN 105407252 A CN105407252 A CN 105407252A
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- frame
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- buffer memory
- mark frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/0806—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division the signals being two or more video signals
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Abstract
Embodiments of the invention provide a method and a device for synchronous display of pictures, relating to the technical field of video monitoring. The method comprises the following steps of judging whether a stored video frame is a synchronous mark frame after the video frame which is transmitted through a video channel is stored in a cache corresponding to each video channel, wherein the video frames are simultaneously transmitted by different video channels, and the video frames which are simultaneously transmitted by the different video channels at each time can be synthesized into one picture; determining a frame position of each synchronous mark frame in the corresponding cache after determining that the stored video frame is the synchronous mark frame; and if the position of at least one synchronous mark frame in the corresponding cache is different from the positions of other synchronous mark frames in the corresponding caches, adjusting the video frames in parts ofor allcaches in order to enable the synchronous mark frames to have the same position in the corresponding caches after adjustment. According to the method and the device, when a display plays the pictures of multiple channels, synchronous display is guaranteed.
Description
Technical field
The present invention relates to technical field of video monitoring, particularly relate to method and the device of the display of a kind of picture synchronization.
Background technology
Along with the fast development of information-based systems construction, require urgent all the more to the definition of picture signal, ultrahigh resolution, DVI (DigitalVisualInterface is used in a large number now in information-based terminal, digital visual interface), SDI (SerialDigitalInterface, serial digital interface) and HDMI (HighDefinitionMultimediaInterface, high definition media interface) signaling interface, this just requires that transmission system, treatment system and display system all can support the image of high definition specification.Ultra high-definition resolution (UltraHigh-Definition) comprises 4k (3840x2160), 8k (7680x4320) etc., ultra high-definition image in different resolution can be with very fine and smooth display effect, its picture can carry huge amount of information, the details of picture inside is very clear simultaneously, ultra high-definition image in different resolution is used on splicing display device and shows, and effect shakes more.
The data volume of each frame of ultra high-definition image in different resolution is large, by transmitting ultra high-definition image in different resolution in common signalling channel.In order to realize the display of ultra high-definition image in different resolution, often split current ultra high-definition resolution chart image signal according to resolution in conventional art, the ultrahigh resolution image subsignal after segmentation is suitable for mono signal channel transfer.The signalling channel of corresponding number is adopted respectively the ultrahigh resolution image subsignal after segmentation to be transferred to splicing display device; Splicing display device shows each ultrahigh resolution image subsignal.But transmit in each channel owing to being divided into multiple subsignal, and each channel hardware has the reason of otherness, delay in various degree may be there is during each passage display, computer is when playing dynamic image or dragging still image fast, position between the image of each passage of display and image there will be significantly splices vestige, thus there is picture break-up, image mosaic place presents zigzag phenomenon, affects display effect.
Summary of the invention
A kind of method that the embodiment of the present invention provides picture synchronization to show and device.Ensure that display can realize simultaneous display when playing multichannel image, in order to solve prior art Computer when playing dynamic image or dragging still image fast, position between the image of each passage of display and image there will be significantly splices vestige, thus there is picture break-up, image mosaic place presents zigzag phenomenon, affects the problem of display effect.
A kind of method that the embodiment of the present invention provides picture synchronization to show, described method comprises:
In the buffer memory that each video channel is corresponding stored in the frame of video transmitted by video channel after, judge stored in frame of video whether be sync mark frame, wherein different video channels transmission of video frame simultaneously, and the frame of video that different video channels transmits at every turn simultaneously can synthesize piece image; Determine stored in frame of video be sync mark frame after, determine the frame position of each sync mark frame in the buffer memory of correspondence; If at least one sync mark frame position in the buffer memory of correspondence is different from other sync mark frame positions in corresponding buffer memory, then the frame of video in part or all of buffer memory is adjusted, identical with each position of sync mark frame in the buffer memory of correspondence after making adjustment.
In the above embodiment of the present invention, receive from video channel transmission frame of video and after frame of video is carried out buffer memory, whether the frame of video judging buffer memory is sync mark frame, if determine stored in be sync mark frame, then determine this sync mark frame frame position in the buffer, if when occurring in different buffer memory that the frame position of at least one is different from the sync mark frame position in other buffer memorys, then this synchronization frame is adjusted, to make the position of the sync mark frame in each buffer memory after adjustment identical, simultaneous display can be realized when making display play multichannel image, in order to solve prior art Computer when playing dynamic image or dragging still image fast, position between the image of each passage of display and image there will be significantly splices vestige, thus there is picture break-up, image mosaic place presents zigzag phenomenon, affect the problem of display effect.
A kind of method that the embodiment of the present invention provides picture synchronization to show, described method comprises: each two field picture of video is partitioned into multiple frame of video, and exports a two field picture by multiple video channel simultaneously and split the multiple frame of video obtained;
In the process by multiple video channel output video frame, cycle exports sync mark frame by multiple video channel simultaneously, to make receiving terminal according to described sync mark frame after determining that display frame is asynchronous, the frame of video in the buffer memory corresponding to video channel adjusts.
In the above embodiment of the present invention, image to be sent or Video segmentation are become multiple frame of video, each frame of video is transmitted in the different video channels of correspondence, and in the process of transmission, periodically export sync mark frame simultaneously, to make receiving terminal according to described sync mark frame after determining that display frame is asynchronous, frame of video in the buffer memory corresponding to video channel adjusts, simultaneous display can be realized when making display play multichannel image, in order to solve prior art Computer when playing dynamic image or dragging still image fast, position between the image of each passage of display and image there will be significantly splices vestige, thus there is picture break-up, image mosaic place presents zigzag phenomenon, affect the problem of display effect.
The device that the embodiment of the present invention provides a kind of picture synchronization to show, comprise: judging unit, for in the buffer memory that each video channel is corresponding stored in after the frame of video transmitted by video channel, judge stored in frame of video whether be sync mark frame, wherein different video channels transmission of video frame simultaneously, and the frame of video that different video channels transmits at every turn simultaneously can synthesize piece image; Determining unit, for determine stored in frame of video be sync mark frame after, determine the frame position of each sync mark frame in the buffer memory of correspondence; Adjustment unit, if different from other sync mark frame positions in corresponding buffer memory at least one sync mark frame position in the buffer memory of correspondence, then the frame of video in part or all of buffer memory is adjusted, identical with each position of sync mark frame in the buffer memory of correspondence after making adjustment.
In the above embodiment of the present invention, receive from video channel transmission frame of video and after frame of video is carried out buffer memory, whether the frame of video judging buffer memory is sync mark frame, if determine stored in be sync mark frame, then determine this sync mark frame frame position in the buffer, if when occurring in different buffer memory that the frame position of at least one is different from the sync mark frame position in other buffer memorys, then this synchronization frame is adjusted, to make the position of the sync mark frame in each buffer memory after adjustment identical, simultaneous display can be realized when making display play multichannel image, in order to solve prior art Computer when playing dynamic image or dragging still image fast, position between the image of each passage of display and image there will be significantly splices vestige, thus there is picture break-up, image mosaic place presents zigzag phenomenon, affect the problem of display effect.
The invention provides the device of a kind of picture synchronization display, this device comprises:
Cutting unit, for each two field picture of video is partitioned into multiple frame of video, and exports a two field picture by multiple video channel simultaneously and splits the multiple frame of video obtained;
Output unit, for in the process by multiple video channel output video frame, cycle exports sync mark frame by multiple video channel simultaneously, to make receiving terminal according to described sync mark frame after determining that display frame is asynchronous, the frame of video in the buffer memory corresponding to video channel adjusts.
In the above embodiment of the present invention, image to be sent or Video segmentation are become multiple frame of video, each frame of video is transmitted in the different video channels of correspondence, and in the process of transmission, periodically export sync mark frame simultaneously, to make receiving terminal according to described sync mark frame after determining that display frame is asynchronous, frame of video in the buffer memory corresponding to video channel adjusts, simultaneous display can be realized when making display play multichannel image, in order to solve prior art Computer when playing dynamic image or dragging still image fast, position between the image of each passage of display and image there will be significantly splices vestige, thus there is picture break-up, image mosaic place presents zigzag phenomenon, affect the problem of display effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The method flow diagram of a kind of picture synchronization display that Fig. 1 provides for the embodiment of the present invention;
The method flow diagram of a kind of picture synchronization display that Fig. 2 provides for the embodiment of the present invention;
The method flow diagram of a kind of picture synchronization display that Fig. 3 provides for the embodiment of the present invention;
The apparatus structure schematic diagram of a kind of picture synchronization display that Fig. 4 provides for the embodiment of the present invention;
The apparatus structure schematic diagram of a kind of picture synchronization display that Fig. 5 provides for the embodiment of the present invention;
Fig. 6 is the position view of the sync mark frame of the corresponding buffer memory of different video channels in the embodiment of the present invention;
The apparatus structure schematic diagram of a kind of picture synchronization display that Fig. 7 (a) provides for the embodiment of the present invention;
The apparatus structure schematic diagram of a kind of picture synchronization display that Fig. 7 (b) provides for the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of method that the embodiment of the present invention provides picture synchronization to show, described method comprises:
In the buffer memory that each video channel is corresponding stored in the frame of video transmitted by video channel after, judge stored in frame of video whether be sync mark frame, wherein different video channels transmission of video frame simultaneously, and the frame of video that different video channels transmits at every turn simultaneously can synthesize piece image; Determine stored in frame of video be sync mark frame after, determine the frame position of each sync mark frame in the buffer memory of correspondence; If at least one sync mark frame position in the buffer memory of correspondence is different from other sync mark frame positions in corresponding buffer memory, then the frame of video in part or all of buffer memory is adjusted, identical with each position of sync mark frame in the buffer memory of correspondence after making adjustment.
In the above embodiment of the present invention, receive from video channel transmission frame of video and after frame of video is carried out buffer memory, whether the frame of video judging buffer memory is sync mark frame, if determine stored in be sync mark frame, then determine this sync mark frame frame position in the buffer, if when occurring in different buffer memory that the frame position of at least one is different from the sync mark frame position in other buffer memorys, then this synchronization frame is adjusted, to make the position of the sync mark frame in each buffer memory after adjustment identical, simultaneous display can be realized when making display play multichannel image, in order to solve prior art Computer when playing dynamic image or dragging still image fast, position between the image of each passage of display and image there will be significantly splices vestige, thus there is picture break-up, image mosaic place presents zigzag phenomenon, affect the problem of display effect.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
A kind of method that the embodiment of the present invention provides picture synchronization to show, as shown in Figure 1, wherein:
Step S101, in the buffer memory that each video channel is corresponding stored in the frame of video transmitted by video channel after, judge stored in frame of video whether be sync mark frame, wherein different video channels transmission of video frame simultaneously, and the frame of video that different video channels transmits at every turn simultaneously can synthesize piece image;
Step S102, determine stored in frame of video be sync mark frame after, determine the frame position of each sync mark frame in the buffer memory of correspondence;
Step S103, if at least one sync mark frame position in the buffer memory of correspondence is different from other sync mark frame positions in corresponding buffer memory, then the frame of video in part or all of buffer memory is adjusted, identical with each position of sync mark frame in the buffer memory of correspondence after making adjustment.
In embodiments of the present invention, the sync mark frame of transmission can be a secondary solid-color image frame, and also can be that other are with markd image to send after being divided into many parts, each sync mark frame all carries this mark, and each mark is identical.
Wherein, in step S101, each video channel receives and the frame of video of buffer memory can synthesize a sub-picture, and that is these frame of video are become by a sub-picture or a Video Image Segmentation.And transmission of video frame while that different video channels being.
In embodiments of the present invention, determine whether it is sync mark frame, namely check according to the mark in sync mark frame, if having the mark of sync mark frame in the frame of video be checked through, then think that this frame of video is exactly sync mark frame.
In step s 102, determine stored in frame of video be sync mark frame after, calculate this position of sync mark frame in this buffer memory, such as detect that the position of sync mark frame buffer in the 1st video channel is n1, in 2nd video channel, the position of sync mark frame buffer is n2, and the position of sync mark frame buffer in N video channel is n
n.
In step s 103, if when at least one sync mark frame position in the buffer memory of correspondence is different from the position of other sync mark frames, adjust the frame of video in some or all of buffer memory.
Wherein, in step s 103, described frame of video in part or all of buffer memory to be adjusted, comprising:
Determine the position of the sync mark frame that position in the buffer memory of correspondence is the most forward;
For a first object sync mark frame, determine the alternate position spike between the position of described first object sync mark frame in the buffer memory of correspondence and the position of the most forward sync mark frame, and abandon in buffer memory corresponding to described first object sync mark frame the N number of frame of video be positioned at before described first object sync mark frame;
Wherein, described N is described alternate position spike, and described first object sync mark frame is the sync mark frame except the most forward sync mark frame.Above-mentioned first object synchronization frame and the most forward sync mark frame are each video channels of synchronous input.
Optionally, as the position n1=n2=of sync mark frame buffer ...=n
ntime, namely illustrate when this moment, frame of video is in synchronous regime, then the sync mark frame in each video channel is abandoned, by the frame of video of buffer memory under each passage according to frame sequential and according to the high-resolution image of mode reverse splicing synthesis one width large scale splitting image, and this image is shown.In embodiments of the present invention, receiver, video frame while that frame of video being in synchronous regime and each video channel and being, and the speed of frame of display video is also identical, that is simultaneously identical from the position of frame of video the cache location of correspondence that different people having a common goal is transmitted.
Optionally, when buffer memory in an xth video channel sync mark frame residing for position be n
xtime, and n
xbe not equal to the position n that in other video channels, sync mark frame is residing in corresponding buffer memory
0(n1=n2=n3=...=n
n=n
0) time, if n
x>n
0, the sync mark frame position namely in an xth video channel lags behind the sync mark frame position in other video channels, then by xth video channel n-th
xthe n of buffer memory before frame of video
x-n
0frame frame of video abandons, until the order n residing for sync mark frame under this video channel
x' equal the position n of the sync mark frame of buffer memory in other video channels
0time, then start receiver, video frame simultaneously, and the sync mark frame in each video channel is abandoned, by the frame of video of buffer memory under each passage according to frame sequential and according to the high-resolution image of mode reverse splicing synthesis one width large scale splitting image, and this image is shown, thus realizes image simultaneous display in a display of N number of video channel input.
Such as, as shown in Figure 6,4 frame of video having 4 video channels to transmit same sub-picture to be partitioned into, and the position of the sync mark frame of buffer memory is respectively in each video channel, sync mark frame in 1st video channel position is in the buffer the 16th frame, sync mark frame in 2nd video channel position is in the buffer the 15th frame, sync mark frame in 3rd video channel position is in the buffer the 15th frame, and the position in the buffer of the sync mark frame in the 4th video channel is the 15th frame.
The position of the sync mark frame then in the 1st video channel lags behind sync mark frame position in the buffer in other passages, then abandon the frame of video of 1 frame before the 16th frame synchronization mark frame in the 1st video channel, that is, after having abandoned 1 frame frame of video, the position of the sync mark frame in the 1st passage just becomes the 15th frame, and the position of the sync mark frame in such 4 video channels in corresponding buffer memory is just synchronized.
Wherein, in step s 103, described frame of video in part or all of buffer memory to be adjusted, also comprises:
Determine the position of the position sync mark frame the most rearward in the buffer memory of correspondence;
For a second object synchronization marker frame, determine the alternate position spike between described second position of object synchronization marker frame in the buffer memory of correspondence and the position of sync mark frame the most rearward, and copy in buffer memory corresponding to described second object synchronization marker frame the N number of frame of video be positioned at before described second object synchronization marker frame, the N number of frame of video copied is buffered in before described second object synchronization marker frame;
Wherein, described N is described alternate position spike, and described second object synchronization marker frame is the sync mark frame except sync mark frame the most rearward.Above-mentioned second object synchronization frame and sync mark frame are the most rearward each video channels of synchronous input.
Optionally, when buffer memory in an xth video channel sync mark frame residing for position be n
xtime, and n
xbe not equal to the position n that in other video channels, sync mark frame is residing in corresponding buffer memory
0(n1=n2=n3=...=n
n=n
0) time, if n
x<n
0, the sync mark frame position namely in an xth video channel is more forward than the sync mark frame position in other video channels, then by xth video channel n-th
xthe n of buffer memory before frame of video
x-n
0frame frame of video copies, and the n that will copy
x-n
0in the position of frame buffer before this sync mark frame, until the order n residing for sync mark frame under this video channel
x' equal the position n of the sync mark frame of buffer memory in other video channels
0time, then start receiver, video frame simultaneously, and the sync mark frame in each video channel is abandoned, by the frame of video of buffer memory under each passage according to frame sequential and according to the high-resolution image of mode reverse splicing synthesis one width large scale splitting image, and this image is shown, thus realizes image simultaneous display in a display of N number of video channel input.
Preferably, the n will copied
xthe position of-n0 frame buffer before this sync mark frame, namely in this video channel buffer memory n-th
x-1position on.
Such as, 4 frame of video having 4 video channels to transmit same sub-picture to be partitioned into, and the position of the sync mark frame of buffer memory is respectively in each video channel, sync mark frame in 1st video channel position is in the buffer the 15th frame, sync mark frame in 2nd video channel position is in the buffer the 16th frame, sync mark frame in 3rd video channel position is in the buffer the 16th frame, and the position in the buffer of the sync mark frame in the 4th video channel is the 16th frame.
The position of the sync mark frame then in the 1st video channel is more forward than sync mark frame position in the buffer in other passages, then copy the frame of video of 1 frame before the 15th frame synchronization mark frame in the 1st video channel, namely the 14th frame in the 1st video channel in buffer memory is copied, and by this frame buffer of copying before the frame of original place 15, that is, after replicating 1 frame frame of video, the position of the sync mark frame in the 1st passage just becomes the 16th frame, and the position of the sync mark frame in such 4 video channels in corresponding buffer memory is just synchronized.
Optionally, two kinds of adjustment modes can realize the synchronous of synchronization frame, then adjusting mode can be that two kinds of modes are carried out simultaneously, also can be to adopt a kind of mode to adjust.
Such as, 4 frame of video having 4 video channels to transmit same sub-picture to be partitioned into, and the position of the sync mark frame of buffer memory is respectively in each video channel, sync mark frame in 1st video channel position is in the buffer the 15th frame, sync mark frame in 2nd video channel position is in the buffer the 16th frame, sync mark frame in 3rd video channel position is in the buffer the 16th frame, and the position in the buffer of the sync mark frame in the 4th video channel is the 16th frame.
Then optional, adjust the synchronization frame position in the 2nd, the 3rd, the 4th video channel, namely the 15th frame is abandoned in the 2nd, the 3rd, the 4th video channel, then after adjustment, 2nd, in the 3rd, the 4th video channel, sync mark frame position is in the buffer the 15th frame, the synchronization frame position consistency of buffer memory in 4 video channels.
Such as, 4 frame of video having 4 video channels to transmit same sub-picture to be partitioned into, and the position of the sync mark frame of buffer memory is respectively in each video channel, sync mark frame in 1st video channel position is in the buffer the 15th frame, sync mark frame in 2nd video channel position is in the buffer the 15th frame, sync mark frame in 3rd video channel position is in the buffer the 16th frame, and the position in the buffer of the sync mark frame in the 4th video channel is the 16th frame.
Then according to Adjustment principle, both the position of sync mark frame in the 1st video channel, the 2nd video channel can have been adjusted, namely the frame of video of 1 frame before the 15th frame is copied, namely the 14th frame is copied, and being buffered in the position of former 14th frame, the position of the sync mark frame after such 1st video channel, the 2nd video channel adjustment is identical with the position of sync mark frame in the 3rd video channel, the 4th video channel;
Also passable, adjust the position of sync mark frame in the 3rd, the 4th video channel, namely delete the frame of video of the 15th frame, then in the 3rd, the 4th video channel after adjustment the position of sync mark frame adjust with the 1st video channel, the 2nd video channel after the position of sync mark frame identical.
Further, in step s 103, described frame of video in part or all of buffer memory adjusted after, also comprise:
Abandon the sync mark frame in each buffer memory.
In embodiments of the present invention, after sync mark frame position is consistent, then synchronous transmission when illustrating in now each video channel, then abandon sync mark frame, sync mark frame can either be utilized to make each passage reach synchronous, also ensure that and can not show sync mark frame when frame of display video.
A kind of method that the embodiment of the present invention provides picture synchronization to show, as shown in Figure 2, wherein:
Step S201, is partitioned into multiple frame of video by each two field picture of video, and exports a two field picture by multiple video channel simultaneously and split the multiple frame of video obtained;
Step S202, in the process by multiple video channel output video frame, cycle exports sync mark frame by multiple video channel simultaneously, and to make receiving terminal according to described sync mark frame after determining that display frame is asynchronous, the frame of video in the buffer memory corresponding to video channel adjusts.
Wherein, in step s 201, according to the liquid crystal display screen partitioned mode of display, number of channels is split.Such as a resolution is 3840 × 2160 displays, and its liquid crystal display screen is four partitioned modes of 2 × 2, and namely the resolution of each subregion is 1920 × 1080.The four subregion partitioning schemes of 2 × 2 are then adopted raw video image to be divided into 4 width video images, and by 4 video channel output video frames.
Wherein, in step S202, the cycle exports sync mark frame by multiple video channel, and the duration that can arrange according to user in described cycle exports.
Wherein, in step S202, the first frame exported by multiple video channel is sync mark frame.
State on the invention in embodiment, before output first frame frame of video, export sync mark frame, make from output first frame frame of video, just the position of adjustment frame of video, from export and just keep synchronous.
A kind of method that the embodiment of the present invention provides picture synchronization to show, as shown in Figure 3, comprising:
Step S301, is partitioned into multiple frame of video by each two field picture of video, performs step S302;
Step S302, exports a two field picture by multiple video channel simultaneously and splits the multiple frame of video obtained, and performs step S303;
Step S303, the cycle exports sync mark frame by multiple video channel simultaneously, performs step S304;
Step S304, the frame of video that buffer memory is transmitted by video channel, performs step S305;
Step S305, judge stored in frame of video whether be sync mark frame, if there is sync mark frame, then perform step S306, otherwise return step S305 continue judge;
Step S306, determines the frame position of each sync mark frame in the buffer memory of correspondence, performs step S307;
Step S307, judges whether to there is at least one sync mark frame position in the buffer memory of correspondence different from other sync mark frame positions in corresponding buffer memory, if exist, then performs step S308, otherwise performs step S310;
Step S308, adjusts the frame of video in part or all of buffer memory, identical with each position of sync mark frame in the buffer memory of correspondence after making adjustment, performs step S309;
Step S309, abandons the sync mark frame in each video channel, performs step S310;
Step S310, by the frame of video of buffer memory under each passage according to frame sequential and according to the high-resolution image of mode reverse splicing synthesis one width large scale splitting image, and shows this image.
In the above embodiment of the present invention, the executive agent of described method can be that computer and display unit are carried out alternately, both after Video Image Segmentation can being become different channel transfer by a computer, show in a display, also can by a computer export video signal, multiple different display simultaneous display.
Based on identical technical conceive, the system that the embodiment of the present invention also provides a kind of picture synchronization to show and device, this device can perform said method embodiment, the principle of dealing with problems due to this device is similar to a kind of aforementioned communication management method, therefore the enforcement of this device see the enforcement of method, can repeat part and repeats no more.
The invention provides the device of a kind of picture synchronization display, as shown in Figure 4, this device comprises:
Judging unit 401, for in the buffer memory that each video channel is corresponding stored in after the frame of video transmitted by video channel, judge stored in frame of video whether be sync mark frame, wherein different video channels transmission of video frame simultaneously, and the frame of video that different video channels transmits at every turn simultaneously can synthesize piece image;
Determining unit 402, for determine stored in frame of video be sync mark frame after, determine the frame position of each sync mark frame in the buffer memory of correspondence;
Adjustment unit 403, if different from other sync mark frame positions in corresponding buffer memory at least one sync mark frame position in the buffer memory of correspondence, then the frame of video in part or all of buffer memory is adjusted, identical with each position of sync mark frame in the buffer memory of correspondence after making adjustment.
Wherein, at described adjustment unit 403, also for:
Determine the position of the sync mark frame that position in the buffer memory of correspondence is the most forward;
For a first object sync mark frame, determine the alternate position spike between the position of described first object sync mark frame in the buffer memory of correspondence and the position of the most forward sync mark frame, and abandon in buffer memory corresponding to described first object sync mark frame the N number of frame of video be positioned at before described first object sync mark frame;
Wherein, described N is described alternate position spike, and described first object sync mark frame is the sync mark frame except the most forward sync mark frame.
Wherein, at described adjustment unit 403, also for:
Determine the position of the position sync mark frame the most rearward in the buffer memory of correspondence;
For a second object synchronization marker frame, determine the alternate position spike between described second position of object synchronization marker frame in the buffer memory of correspondence and the position of sync mark frame the most rearward, and copy in buffer memory corresponding to described second object synchronization marker frame the N number of frame of video be positioned at before described second object synchronization marker frame, the N number of frame of video copied is buffered in before described second object synchronization marker frame;
Wherein, described N is described alternate position spike, and described second object synchronization marker frame is the sync mark frame except sync mark frame the most rearward.
Wherein, at described adjustment unit 403, also for:
Abandon the sync mark frame in each buffer memory.
The invention provides the device of a kind of picture synchronization display, this device comprises:
Cutting unit 501, for each two field picture of video is partitioned into multiple frame of video, and exports a two field picture by multiple video channel simultaneously and splits the multiple frame of video obtained;
Output unit 502, for in the process by multiple video channel output video frame, cycle exports sync mark frame by multiple video channel simultaneously, to make receiving terminal according to described sync mark frame after determining that display frame is asynchronous, the frame of video in the buffer memory corresponding to video channel adjusts.
Wherein, the first frame exported by multiple video channel is sync mark frame.
State on the invention in embodiment, the device of the picture synchronization display shown in Fig. 5 can be computer installation, described computer installation is called multiple frame of video by needing the Video Image Segmentation of transmission, and periodically export sync mark frame, be transferred to display equipment by different video channels simultaneously, this display equipment can receive the frame of video in multiple video channel, and is buffered in buffer memory corresponding to multiple video channel.And this image by the frame of video after adjustment according to frame sequential and the high-resolution image of mode reverse splicing synthesis one width large scale splitting image, can show by this display equipment.Described display equipment can be a display, also can be made up of different display.
State on the invention in embodiment, the device described in Fig. 4 can be external to aforementioned display device device, as shown in Fig. 7 (a); Also can be embedded in aforementioned display device device, as shown in Fig. 7 (b).
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a method for picture synchronization display, it is characterized in that, the method comprises:
In the buffer memory that each video channel is corresponding stored in the frame of video transmitted by video channel after, judge stored in frame of video whether be sync mark frame, wherein different video channels transmission of video frame simultaneously, and the frame of video that different video channels transmits at every turn simultaneously can synthesize piece image;
Determine stored in frame of video be sync mark frame after, determine the frame position of each sync mark frame in the buffer memory of correspondence;
If at least one sync mark frame position in the buffer memory of correspondence is different from other sync mark frame positions in corresponding buffer memory, then the frame of video in part or all of buffer memory is adjusted, identical with each position of sync mark frame in the buffer memory of correspondence after making adjustment.
2. method according to claim 1, is characterized in that, describedly adjusts the frame of video in part or all of buffer memory, comprising:
Determine the position of the sync mark frame that position in the buffer memory of correspondence is the most forward;
For a first object sync mark frame, determine the alternate position spike between the position of described first object sync mark frame in the buffer memory of correspondence and the position of the most forward sync mark frame, and abandon in buffer memory corresponding to described first object sync mark frame the N number of frame of video be positioned at before described first object sync mark frame;
Wherein, described N is described alternate position spike, and described first object sync mark frame is the sync mark frame except the most forward sync mark frame.
3. method according to claim 1, is characterized in that, describedly adjusts the frame of video in part or all of buffer memory, also comprises:
Determine the position of the position sync mark frame the most rearward in the buffer memory of correspondence;
For a second object synchronization marker frame, determine the alternate position spike between described second position of object synchronization marker frame in the buffer memory of correspondence and the position of sync mark frame the most rearward, and copy in buffer memory corresponding to described second object synchronization marker frame the N number of frame of video be positioned at before described second object synchronization marker frame, the N number of frame of video copied is buffered in before described second object synchronization marker frame;
Wherein, described N is described alternate position spike, and described second object synchronization marker frame is the sync mark frame except sync mark frame the most rearward.
4., according to the arbitrary described method of claims 1 to 3, it is characterized in that, described frame of video in part or all of buffer memory is adjusted after, also comprise:
Abandon the sync mark frame in each buffer memory.
5. a method for picture synchronization display, it is characterized in that, the method comprises:
Each two field picture of video is partitioned into multiple frame of video, and exports a two field picture by multiple video channel simultaneously and split the multiple frame of video obtained;
In the process by multiple video channel output video frame, cycle exports sync mark frame by multiple video channel simultaneously, to make receiving terminal according to described sync mark frame after determining that display frame is asynchronous, the frame of video in the buffer memory corresponding to video channel adjusts.
6. method according to claim 5, is characterized in that, the first frame exported by multiple video channel is sync mark frame.
7. a device for picture synchronization display, is characterized in that, comprising:
Judging unit, for in the buffer memory that each video channel is corresponding stored in after the frame of video transmitted by video channel, judge stored in frame of video whether be sync mark frame, wherein different video channels transmission of video frame simultaneously, and the frame of video that different video channels transmits at every turn simultaneously can synthesize piece image;
Determining unit, for determine stored in frame of video be sync mark frame after, determine the frame position of each sync mark frame in the buffer memory of correspondence;
Adjustment unit, if different from other sync mark frame positions in corresponding buffer memory at least one sync mark frame position in the buffer memory of correspondence, then the frame of video in part or all of buffer memory is adjusted, identical with each position of sync mark frame in the buffer memory of correspondence after making adjustment.
8. device according to claim 7, is characterized in that, described adjustment unit, also for:
Determine the position of the sync mark frame that position in the buffer memory of correspondence is the most forward;
For a first object sync mark frame, determine the alternate position spike between the position of described first object sync mark frame in the buffer memory of correspondence and the position of the most forward sync mark frame, and abandon in buffer memory corresponding to described first object sync mark frame the N number of frame of video be positioned at before described first object sync mark frame;
Wherein, described N is described alternate position spike, and described first object sync mark frame is the sync mark frame except the most forward sync mark frame.
9. device according to claim 7, is characterized in that, described adjustment unit, also for:
Determine the position of the position sync mark frame the most rearward in the buffer memory of correspondence;
For a second object synchronization marker frame, determine the alternate position spike between described second position of object synchronization marker frame in the buffer memory of correspondence and the position of sync mark frame the most rearward, and copy in buffer memory corresponding to described second object synchronization marker frame the N number of frame of video be positioned at before described second object synchronization marker frame, the N number of frame of video copied is buffered in before described second object synchronization marker frame;
Wherein, described N is described alternate position spike, and described second object synchronization marker frame is the sync mark frame except sync mark frame the most rearward.
10., according to the arbitrary described device of claim 7 ~ 9, it is characterized in that, described adjustment unit, also for:
Abandon the sync mark frame in each buffer memory.
The device of 11. 1 kinds of picture synchronization displays, is characterized in that, comprising:
Cutting unit, for each two field picture of video is partitioned into multiple frame of video, and exports a two field picture by multiple video channel simultaneously and splits the multiple frame of video obtained;
Output unit, for in the process by multiple video channel output video frame, cycle exports sync mark frame by multiple video channel simultaneously, to make receiving terminal according to described sync mark frame after determining that display frame is asynchronous, the frame of video in the buffer memory corresponding to video channel adjusts.
12. devices according to claim 11, is characterized in that, the first frame exported by multiple video channel is sync mark frame.
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