CN105100644A - Seamless switching method for video source - Google Patents
Seamless switching method for video source Download PDFInfo
- Publication number
- CN105100644A CN105100644A CN201510415459.2A CN201510415459A CN105100644A CN 105100644 A CN105100644 A CN 105100644A CN 201510415459 A CN201510415459 A CN 201510415459A CN 105100644 A CN105100644 A CN 105100644A
- Authority
- CN
- China
- Prior art keywords
- picture
- video source
- main channel
- video
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Studio Circuits (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention relates to a seamless switching method for a video source and is applied to a video processor which is configured with a main channel, and a PIP (picture in picture) channel and is suitable for connecting a first video source and a second video source, wherein the method comprises the steps as follows: a) receiving a video source switching instruction; b) starting output of a PIP channel, displaying a picture of the first video source output by the PIP channel in the top and completely covering the picture of the first video source output by the main channel; c) switching the input source of the main channel from the first video source to the second video source; d) setting an image processing parameter of the main channel and outputting a picture display parameter while the signal of the second video source is stable and waiting of the signal is not over-timed, and displaying the picture of the second video source output by the main channel in the top according to appointed picture switching special effect; and e) closing the output of the PIP channel. Therefore, the method of the invention could solve the problem of short blank screen and stiff switching effect in the video source switching process in prior art, and could realize the switching special effect of a plurality of pictures.
Description
Technical field
The present invention relates to display control technology field, particularly a kind of video source seamless handover method.
Background technology
LED display, due to the size of the brightness of its superelevation, contrast and super large, has been widely used in advertisement, ceremony, live etc. has performed in a radio or TV programme occasion.General LED display control system by video processor, sending card and receiving card three part form.Video processor possesses abundant input interface, can convert any input source to DVI or HDMI signal, then by cable transmission to sending card.Control signal and view data are converted to the packet of set form, then transfer to receiving card by gigabit Ethernet or other interfaces after the image that DVI or HDMI input is carried out buffer memory, process by sending card according to specific agreement.After receiving card receives the signal of specific format, control signal is separated with view data and according to the requirement of control signal, the image of specific region is sent to the lamp plate module being attached thereto and connecing, completes the display of topography; The co-operation of multiple receiving card, completes the display of LED display complete picture.Usually, at the scene of performing in a radio or TV programme, usually need to switch between the picture of different input source.
Prior art one is in LED display control system, adopt the mode of receiving card screen locking to switch to the not blank screen realized between different input source: as shown in Figure 1, tradition sending card generally possesses DVI and HDMI two interfaces, but these two interfaces generally share video receiver (receiver) 11 such as ADV761x etc., in handoff procedure, again identify owing to there is signal, image input resolution conversion, inner parameter need reconfigure, cause network interface output data to occur the interruption of certain hour, thus cause LED display blank screen.For ensureing LED display not blank screen, conventional handover method is: sending card is after receiving the instruction of input source switching controls, first send to receiving card and freeze instruction, after receiving card receives and freezes instruction, freeze the picture of the input source A shown, namely no longer upgrade the image in buffer memory, LED display screen repeats show same content; Sending card is being freezed after instruction is sent completely, controls video receiver 11 immediately and be switched to input source B, re-start Signal analysis and enter overtime wait state; In waiting-timeout process, if video receiver 11 has detected signal and recognized signal stabilization, then can send interrupt signal to the FPGA13 being mounted with SDRAM14; FPGA13 is according to the display parameters such as image resolution ratio, color space of the new input source B of interrupt requests active obtaining, reconfigure the parameter of input buffer module in FPGA13 and output module, complete the packing of the view data of input source B and be sent to receiving card by network PHY chip 15; While the view data sending new input source B, sending card can send to receiving card thaws instruction to cancel frozen state, and receiving card normally receives the view data of input source B afterwards, and on LED display screen, show the image after switching; If after the waiting-timeout time, still fail useful signal to be detected, sending card sends no signal instruction to receiving card to control receiving card blank screen.
But, prior art one is limited to the structure and working principle of hardware, the implementation method of seamless switching is existed following not enough: 1) to switch effect single, stiff, also be, the last frame image of a upper input source is needed to repeat display during receiving card seamless switching, after new input source is stable, the picture that normal display is new again, so can there is the picture freeze effect of certain hour, cause handoff procedure stiff, affect the experience of spectators, simultaneously due to receiving card buffer memory capacity and disposal ability limited, cannot be realized other be such as fade-in fade-out, the seamless switching special efficacys such as animation ejection, switch effect not ideal enough, 2) there is the possibility of makeing mistakes in handoff procedure, also be, because the parameter such as image resolution ratio of different input source is different, after being switched to new input source, the image size that sending card sends or frame frequency change, cause the parameter of sending card to need situations such as reconfiguring, more seriously part receiving card even may not receive correct image, occurs display screen part flower screen or blank screen.
Prior art two is the seamless switching realizing passage at sending card end: for realizing the seamless switching of picture, tradition sending card must possess the cache module of the above capacity of two frames, after receiving the instruction switching input source, first stop the picture that buffer memory is new, then with the frame frequency of original input source A, the last frame image N sending buffer memory is repeated; While repeating to send image N continuously, video receiver is switched to input source B, again identify the signal of input; To be identified after signal stabilization, the parameter of the correlation modules such as the space, image memory location of sending card and gigabit Ethernet output module is reconfigured according to the image size of input, configure rear beginning and receive new view data, and according to the row field synchronization information of input source B, start the image that continuous transmission and reception are arrived, finally realize picture seamless switching.
But, prior art two due to the space that there is cache module and output module different along with the difference of input source picture format, the form of output image also can be subject to the impacts such as the row field synchronization information of input picture, in the process that front and back picture switches, there is the change of picture size, line frequency field frequency, it can cause the slight pause and transition in rhythm or melody of picture on LED display, even in some cases, deposit after handover, receiving card parameter upgrades the problems such as the screen flicker caused not in time.
Therefore, how ensureing picture handoff procedure not blank screen, the seamless nature of switching transition, is display industry urgent problem.
Summary of the invention
For defect of the prior art and deficiency, the present invention proposes a kind of video source seamless handover method.
Particularly, a kind of video source seamless handover method that the embodiment of the present invention provides, is applied to video processor, and described video processor is configured with main channel and picture-in-picture passage and is suitable for connection first video source and the second video source.Particularly, described video source seamless handover method sequentially comprises step: (a) receiver, video source switching command; B () is opened the output of described picture-in-picture passage, the picture top set display of described first video source of described picture-in-picture passage output is also covered completely the picture of described first video source that described main channel exports; C the input source of described main channel is switched to described second video source from described first video source by (); (d) when described second video source signal stabilization and wait for time-out, the Image Processing parameter of described main channel is set and exports picture display parameters the picture of described second video source exported described main channel and switch the display of special efficacy top set according to the picture of setting; And (e) closes the output of described picture-in-picture passage.
In one embodiment of the invention, above-mentioned video source seamless handover method, after step (e), also comprises step: the input source of described picture-in-picture passage is switched to described second video source from described first video source and arranges described picture-in-picture passage with consistent with the described Image Processing parameter and output picture display parameters of described main channel by (f).
In one embodiment of the invention, above-mentioned steps (d) comprising: the initial transparent degree arranging the picture of described second video source that described main channel exports is for the most high grade of transparency and top set display; And in the process of the picture top set display of described second video source to export in described main channel, constantly timing reduces the transparency of the picture of the second video source that described main channel exports, until the picture of described second video source of described main channel output covers the top layer display of the picture of described first video source that described picture-in-picture passage exports completely, thus realize picture switching special efficacy of being fade-in fade-out.
In another embodiment of the present invention, above-mentioned steps (d) comprising: the initial transparent degree arranging the picture of described second video source that described main channel exports is minimum transparency and top set display, thus realizes moment image switching switching special efficacy.
In yet another embodiment of the present invention, above-mentioned steps (d) comprising: the initial position and the initial size that arrange the display window of the picture of described second video source that described main channel exports are respectively the original position of animation pop-up window and initial size; The initial transparent degree arranging the picture of described second video source that described main channel exports is minimum transparency and top set display; And progressively change described main channel export described second video source picture display window position and increase described display window, until the picture of described second video source of described main channel output covers the picture of described first video source that described picture-in-picture passage exports completely, thus realize animation ejection picture switching special efficacy.
In one embodiment of the invention, the described Image Processing parameter of the described main channel arranged in above-mentioned steps (d) comprises cached parameters, de interlacing parameter, picture zooming parameter and color enhancement parameter.
In addition, a kind of video source seamless handover method that further embodiment of this invention provides, be applied to LED display control card, described LED display control card comprises video processor and programmable logic device, described video processor is configured with main channel and picture-in-picture passage, and described programmable logic device is electrically connected described video processor by printed circuit board (PCB) cabling.Particularly, described video source seamless handover method sequentially comprises step: (i) responds video source switching command, to open the completely the same and top set display of picture that the output of described picture-in-picture passage and the picture making described picture-in-picture passage export and described main channel exports; (ii) input source of described main channel is switched to new video source; (iii) when described new video source signal stabilization and wait for time-out, the Image Processing parameter of described main channel is set and exports picture display parameters the picture in the described new video source exported described main channel and switch the display of special efficacy top set according to the picture of setting; And (iv) closes the output of described picture-in-picture passage.
In one embodiment of the invention, above-mentioned video source seamless handover method, after step (iv), also comprises step: the input source of described picture-in-picture passage is switched to described new video source and arranges described picture-in-picture passage with consistent with the described Image Processing parameter and output picture display parameters of described main channel by (v).
In one embodiment of the invention, in above-mentioned steps (iii), described picture switching special efficacy is be fade-in fade-out picture switching special efficacy, instantaneously image switching switching special efficacy or animation ejection picture switching special efficacy.
In one embodiment of the invention, above-mentioned LED display control card is the sending card being applied to LED display, and described programmable logic device receives the TTL signal of described video processor output by described printed circuit board (PCB) (PCB) cabling.
As from the foregoing, the embodiment of the present invention provides a kind of video source seamless handover method based on video processor, utilize the functions such as the PIP of video processor, convergent-divergent, it can realize the natural transition of picture between different video source, really accomplish in handoff procedure that picture does not interrupt, do not freeze, but also can realize such as being fade-in fade-out, instantaneously the multiple picture such as switching, animation ejection switch special efficacy; Also can support the picture seamless switching between polytype video input interface simultaneously.
By the detailed description below with reference to accompanying drawing, other side of the present invention and feature become obvious.But it should be known that this accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present invention, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is the structural representation of a kind of sending card of the prior art.
Fig. 2 is the structural representation of a kind of LED display control card of the embodiment of the present invention.
Fig. 3 is the relation schematic diagram of the multiple software modules in the video processor of the embodiment of the present invention.
Fig. 4 is the flow chart of a kind of video source seamless handover method of the embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
A kind of video source seamless handover method based on video processor that the following embodiment of the present invention proposes, compared with traditional seamless handover method, this video source seamless handover method of the embodiment of the present invention, not only can realize the natural transition of picture between different video source, really accomplish in handoff procedure that picture does not interrupt, do not freeze, but also can realize such as being fade-in fade-out, instantaneously the multiple picture such as switching, animation ejection switch special efficacy, also can support the picture seamless switching between polytype video input interface simultaneously, such as DisplayPort, HDMI (HighDefinitionMultimediaInterface, HDMI (High Definition Multimedia Interface)), digital visual interface and the VGA (VideoGraphicsArray such as DVI (DigitalVisualInterface), video graphics array), S-Video (S terminal interface), CVBS (CompositeVideoBroadcastSignal, Composite Video Baseband Signal interface), Component (color difference components video interface), the analog video interfaces such as Composite (composite video interface).Therefore, the video source seamless handover method that the embodiment of the present invention proposes can solve following practical problem:
1) solve LED display in the handoff procedure of conventional video source and there will be the problem of of short duration blank screen, thus the joyful degree of user can be promoted, strengthen Consumer's Experience;
2) in the handoff procedure of solution conventional video source, picture is of short duration freezes, cause switching effect stiff, even there is the drawback of the possibility of makeing mistakes, thus the picture seamless switching between different input video source can be realized, picture transition nature, can not cause visual discontinuous sense;
3) the few shortcoming of sending card image processing function is solved, tradition sending card is limited to structural design, only support the simple image processing function such as brightness, colourity, Gamma, image co-registration and the video source modeling function such as other colors countenance and convergent-divergent, PIP, picture and text superposition cannot be realized, strong to the disposal ability dependence of headend equipment.
For ease of understanding the present invention, below in conjunction with Fig. 2 to Fig. 4, a kind of video source seamless handover method that the embodiment of the present invention provides is described in detail.
Refer to Fig. 2, it is the structural representation of a kind of LED display control card of the embodiment of the present invention.As shown in Figure 2, LED display control card 20 comprises: video processor (VideoProcessor) 21, dynamic random access memory 22a, flash memory 22b, programmable logic device 23, dynamic random access memory 24, network transmission module 25 and multiple network interface 26a-26d.Wherein, video processor 21 supports various video source to input and audio frequency input, and it can be video frequency processing chip such as STDP8028 system-level (SoC) chip of specialty; Dynamic random access memory 22a and flash memory 22b is electrically connected video processor 21, and dynamic random access memory 22a is such as DDR2, and flash memory 22b also can replace to other nonvolatile memories; Programmable logic device 23 is by printed circuit board (PCB) cabling electrical connection video processor 21 and it is such as FPGA (FieldProgrammableGateArray, field programmable gate array), its TTL signal (digital video signal) that can be exported by printed circuit board (PCB) cabling receiver, video processor 21 or even I2S signal (digital audio and video signals); Dynamic random access memory 24 is electrically connected programmable logic device 23 and it is such as DDR2; Network transmission module 25 is such as electrically connected to the RGMII interface (ReducedGigabitMediaIndependentInterface, the Gigabit Media stand-alone interface of simplification) of programmable logic device 23, and it typically comprises network PHY chip; Multiple network interface 26a-26d is electrically connected network transmission module 25, and the quantity of network interface 26a-26d can suitably increase and decrease according to actual needs.
Hold above-mentioned, the LED display control card 20 of the present embodiment, it is such as the sending card being applied to LED display control system, it adopts video processor 21 to replace the video receiver of traditional sending card, the handoff procedure in different video source is realized by video processor completely, after configuring corresponding band year screen body parameter, video processor is supplied to the image resolution ratio of the programmable logic device 23 such as FPGA in sending card, frame frequency, the display parameters such as color gamut space all can fixedly remain unchanged, so not only can realize the seamless switching in different video source, simultaneously due to the image resolution ratio of programmable logic device in sending card 23 input, frame frequency, the display parameters such as color gamut space all do not change, without the need to reconfiguring the view data output module in programmable logic device 23, ensure that the stable smoothness of switching, improve reliability.
Be similar to the video receiver of traditional sending card, video processor 21 is in the process of carrying out passage bridge, also the situation causing exporting short time blank screen because signal identifies again can be there is, but because video processor 21 possesses the function of PIP (PictureInPicture, picture-in-picture).Because the picture that PIP function can realize identical or different input video source is play with different sizes in same window simultaneously, simultaneously the display properties such as the transparency of these two windows, top layer or bottom all can free adjustment, and in handoff procedure, there will not be the problem that picture is torn or picture is made mistakes; Therefore, utilize these characteristics of video processor 21, then can realize the multiple picture seamless switching special efficacy between different input video source.
Refer to Fig. 3, for realizing this seamless switching mode of the embodiment of the present invention, following software module can be set in video processor 21: front end receiver module 31, mode detection module 33, system mode processing module 35, rear end display translation module 37 and timer 39.Wherein, front end receiver module 31 is for configuring the video source parameter selecting access; Mode detection module 33 for the mode detection to input video source, such as, detects the image resolution ratio of input, frame frequency, interlacing information line by line, color space etc.; System mode processing module 35 is for completing the activity such as display parameters setting, image procossing of main channel, PIP passage, and it comprises main channel process submodule 352, PIP passage process submodule 354 and task scheduling submodule 356 etc.; Rear end display translation module 37 is mainly used in output display parameter (as picture display window, transparency etc.) and carries out sequencing control; Timer 39 is such as multiple timer that freely can arrange timing, for the various different timed events of triggering.
Refer to Fig. 4, the flow chart of its a kind of video source seamless handover method proposed for the embodiment of the present invention.The video source seamless handover method of the present embodiment can be applicable to LED display control card as shown in Figure 2.Particularly, before carrying out video source seamless switching, PIP passage in video processor 21 is set with all completely the same with the input source (such as video source A) and display parameters such as zoom factor, output window size and color gamut space etc. of main channel and close the output of PIP passage, to carry out the preparation of video source seamless switching.Afterwards, respond after receiving video source (being also input source) switching command (step S401), first the output of PIP passage is opened, the picture top set display of the video source A exported by PIP passage also covers the picture (step S402) of the video source A that main channel exports completely, now, the picture exported due to PIP passage and main channel is completely the same, and the picture that PIP passage exports is still in continuous renewal, can't stop, therefore visually can't feeling has any discontinuous sensation; After the picture top set display that PIP passage exports, the input source of main channel is switched to video source B (step S403) from video source A, and makes thread enter waiting-timeout state.In the process of waiting-timeout, judge whether whether the signal of video source B stablized and wait time-out (step S404).
If the judged result of step S404 is video source B signal stabilization and wait for not time-out, then can produce interruption in video processor 21, the information of the input video source B got according to mode detection module 33 by video processor 21, arranges the Image Processing parameter such as the cached parameters of main channel, de interlacing, convergent-divergent, color enhancement and output window position, size etc. and exports picture display parameters and the picture of the video source B of main channel output is switched special efficacy top set display (step S405) according to the picture of setting.
Be embodied as example with seamless switching special efficacy of being fade-in fade-out, in step S405, when main channel Image Processing parameter and export picture display parameters after setting completed, the input source of main channel has upgraded, and the picture of video source B can normally show; When treating that the picture of the video source B that main channel exports can normally show, the initial transparent degree that video processor 21 arranges the picture that main channel exports is for the most high grade of transparency and top set display, transparency now due to the picture of main channel output is the highest, therefore the picture of the video source A of PIP passage output still occupies main status, visually feel that the picture of video source B fades in, the picture of video source A fades out; In addition, in the process of the picture top set display of the video source B of main channel output, constantly timing reduces the transparency of the picture of the video source B that main channel exports, until the picture of the video source B of main channel output covers the top layer display of the picture of the video source A that PIP passage exports completely.
If adopt moment handover seamless to switch special efficacy, then in step S405, when main channel Image Processing parameter and export picture display parameters after setting completed, the input source of main channel has upgraded, and the picture of video source B can normally show; When treating that the picture of the video source B that main channel exports can normally show, the initial transparent degree of the picture that main channel directly exports by video processor 21 is set to that minimum (such as transparency is 0, completely opaque) and top set display, the picture that the input source that can realize main channel is switched to video source B from video source A switches display instantaneously.
If adopt animation to eject seamless switching special efficacy, then in step S405, when arranging the output picture display parameters of main channel, initial position and the initial size of the display window of the picture of the video source B exported main channel are set to the original position of animation pop-up window and initial size respectively, when main channel Image Processing parameter and export picture display parameters after setting completed, the input source of main channel has upgraded, and the picture of video source B can normally show; When treating that the picture of the video source B that main channel exports can normally show, the initial transparent degree that video processor 21 arranges the picture of the video source B that main channel exports is set to minimum transparency and top set display, progressively change the position of the display window of the picture of output video source, main channel B afterwards and increase display window, until reach position and the size of setting, such as until the picture of the video source B of main channel output covers the top layer display of the picture of the video source A that PIP passage exports completely, animation can be realized and eject seamless switching special efficacy.
After step S405, also after the picture of the video source B of i.e. main channel output covers the top layer display of the picture of the video source A that PIP passage exports completely, close the output (step S406) of PIP passage, now visually completed the seamless switching of video source A to video source B, such as aforesaid picture seamless switching of being fade-in fade-out, instantaneously image switching seamless switching or animation eject picture seamless switching.In addition, preferably, in order to ensure carrying out fast of video source seamless switching next time, the input source of PIP passage is switched to video source B from video source A and PIP passage is set with the Image Processing parameter of main channel and export picture display parameters consistent (step S407), now because picture has switched, therefore the input source switching of PIP passage is carried out on backstage completely, and the picture not affecting video source B normally shows; So far, this video source finishing switching (step S408).Step S407 is preferred steps herein, that is its steps necessary that also can not switch as single video source, in other words can as the preparation of video source switching next time.
If the judged result of step S404 is "No", then directly terminates this video source and switch (step S408); In this case, then can control display screen blank screen until receive video source switching command next time, or if the signal stabilization of video source B after blank screen a period of time could also be worked as, then could directly to the Image Processing parameter of main channel and export picture display parameters and arrange so that main channel can the picture of correct output video source B show to display screen.
In the above-described embodiments, LED display control card such as sending card can realize the seamless switching of picture between different input source, in handoff procedure, due to the PIP of video processor 21, the participation of the functions such as convergent-divergent, the picture exported remains dynamically uninterrupted continuously in the process switched, and transfer to the image resolution ratio of the programmable logic device 23 on LED display control card 20, frame frequency, the display parameters such as color gamut space immobilize, do not need the view data output module reconfiguring programmable logic device 23, ensure that transmission, the normal work of receiving system, meanwhile, this video source seamless switching mode of the present embodiment can realize easily being such as fade-in fade-out, instantaneously the picture such as switching, animation ejection switch special efficacy.
In addition, it is worth mentioning that, the above embodiment of the present invention is applied to video source seamless handover method the LED display control card comprising video processor to be described as an example, it will be appreciated by persons skilled in the art that the occasion that the video source seamless handover method of the embodiment of the present invention also can be applied to video processor and is separated with sending card.
In sum, the video source seamless Handoff Scheme that the embodiment of the present invention provides can reach following one or more beneficial effect: 1) support abundant input interface, the embodiment of the present invention utilizes video processor to replace traditional video receiver, not only possesses HDMI, DVI interface, also possess other simulations such as VGA, DisplayPort, TTL, digital interface, enriched the range of application of LED display control card such as sending card; 2) multiple special efficacy switching mode is supported, it can realize such as being fade-in fade-out, the multiple switching mode such as switching, animation ejection instantaneously, thus the impression of spectators can be strengthened, and because the parameter between LED display control card and receiving card fixedly remains unchanged, reduce the risk of handoff failure, improve the reliability of system; 3) enriched systemic-function, the participation of video processor not only solves a difficult problem for video source seamless switching, and provides the functions such as such as PIP, de interlacing, convergent-divergent, color enhancement, has enriched the processing capacity of LED display control card.
So far, apply specific case herein and set forth the principle of video source seamless handover method of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention; all will change in specific embodiments and applications; in sum, this description should not be construed as limitation of the present invention, and protection scope of the present invention should be as the criterion with appended claim.
Claims (10)
1. a video source seamless handover method, is applied to video processor, and described video processor is configured with main channel and picture-in-picture passage and is suitable for connection first video source and the second video source; Described video source seamless handover method sequentially comprises step:
(a) receiver, video source switching command;
B () is opened the output of described picture-in-picture passage, the picture top set display of described first video source of described picture-in-picture passage output is also covered completely the picture of described first video source that described main channel exports;
C the input source of described main channel is switched to described second video source from described first video source by ();
(d) when described second video source signal stabilization and wait for time-out, the Image Processing parameter of described main channel is set and exports picture display parameters the picture of described second video source exported described main channel and switch the display of special efficacy top set according to the picture of setting; And
E () closes the output of described picture-in-picture passage.
2. video source seamless handover method as claimed in claim 1, is characterized in that, after step (e), also comprise step:
F the input source of described picture-in-picture passage is switched to described second video source from described first video source and arranges described picture-in-picture passage with consistent with the described Image Processing parameter and output picture display parameters of described main channel by ().
3. video source seamless handover method as claimed in claim 1, it is characterized in that, described step (d) comprising:
The initial transparent degree arranging the picture of described second video source that described main channel exports is for the most high grade of transparency and top set display; And
In the process of the picture top set display of described second video source exported in described main channel, constantly timing reduces the transparency of the picture of the second video source that described main channel exports, until the picture of described second video source of described main channel output covers the top layer display of the picture of described first video source that described picture-in-picture passage exports completely, thus realize picture switching special efficacy of being fade-in fade-out.
4. video source seamless handover method as claimed in claim 1, it is characterized in that, described step (d) comprising:
The initial transparent degree arranging the picture of described second video source that described main channel exports is minimum transparency and top set display, thus realizes moment image switching switching special efficacy.
5. video source seamless handover method as claimed in claim 1, it is characterized in that, described step (d) comprising:
The initial position and the initial size that arrange the display window of the picture of described second video source that described main channel exports are respectively the original position of animation pop-up window and initial size;
The initial transparent degree arranging the picture of described second video source that described main channel exports is minimum transparency and top set display; And
Progressively change the position of the display window of the picture of described second video source that described main channel exports and increase described display window, until the picture of described second video source of described main channel output covers the picture of described first video source that described picture-in-picture passage exports completely, thus realize animation ejection picture switching special efficacy.
6. video source seamless handover method as claimed in claim 1, is characterized in that, the described Image Processing parameter of the described main channel arranged in described step (d) comprises cached parameters, de interlacing parameter, picture zooming parameter and color enhancement parameter.
7. a video source seamless handover method, be applied to LED display control card, described LED display control card comprises video processor and programmable logic device, described video processor is configured with main channel and picture-in-picture passage, and described programmable logic device is electrically connected described video processor by printed circuit board (PCB) cabling; Described video source seamless handover method sequentially comprises step:
I () response video source switching command, shows to open the completely the same and top set of picture that the output of described picture-in-picture passage and the picture making described picture-in-picture passage export and described main channel exports;
(ii) input source of described main channel is switched to new video source;
(iii) when described new video source signal stabilization and wait for time-out, the Image Processing parameter of described main channel is set and exports picture display parameters the picture in the described new video source exported described main channel and switch the display of special efficacy top set according to the picture of setting; And
(iv) output of described picture-in-picture passage is closed.
8. video source seamless handover method as claimed in claim 7, is characterized in that, after step (iv), also comprise step:
V the input source of described picture-in-picture passage is switched to described new video source and arranges described picture-in-picture passage with consistent with the described Image Processing parameter and output picture display parameters of described main channel by ().
9. video source seamless handover method as claimed in claim 7, is characterized in that, in step (iii), described picture switch special efficacy be fade-in fade-out picture switch special efficacy, moment image switching switch special efficacy or animation and eject picture and switch special efficacy.
10. video source seamless handover method as claimed in claim 7, it is characterized in that, described LED display control card is the sending card being applied to LED display, and described programmable logic device receives the TTL signal of described video processor output by described printed circuit board (PCB) cabling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415459.2A CN105100644A (en) | 2015-07-15 | 2015-07-15 | Seamless switching method for video source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415459.2A CN105100644A (en) | 2015-07-15 | 2015-07-15 | Seamless switching method for video source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105100644A true CN105100644A (en) | 2015-11-25 |
Family
ID=54580082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510415459.2A Pending CN105100644A (en) | 2015-07-15 | 2015-07-15 | Seamless switching method for video source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105100644A (en) |
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554416A (en) * | 2015-12-24 | 2016-05-04 | 深圳市捷视飞通科技股份有限公司 | FPGA (Field Programmable Gate Array)-based high-definition video fade-in and fade-out processing system and method |
| CN105704541A (en) * | 2016-01-07 | 2016-06-22 | 广州宏控电子科技有限公司 | Method for seamlessly switching videos |
| CN105825831A (en) * | 2016-02-22 | 2016-08-03 | 杭州中威电子股份有限公司 | Flexible display method used for video monitoring equipment and flexible display device thereof |
| CN106060426A (en) * | 2016-07-01 | 2016-10-26 | 西安诺瓦电子科技有限公司 | Automatic application scene switching method and video controller |
| CN106101750A (en) * | 2016-08-08 | 2016-11-09 | 深圳市众幕电影科技有限公司 | Reflect front advertisement playing control system and control method thereof |
| CN106161995A (en) * | 2016-08-30 | 2016-11-23 | 厦门视诚科技有限公司 | The specially good effect switching device of Table top type Video processing control platform and specially good effect changing method |
| CN106375661A (en) * | 2016-09-21 | 2017-02-01 | 惠州Tcl移动通信有限公司 | Method and device for switching cameras of mobile terminal |
| CN106598516A (en) * | 2016-12-02 | 2017-04-26 | 广东威创视讯科技股份有限公司 | Data processing method and system for target window |
| CN106937159A (en) * | 2017-04-26 | 2017-07-07 | 西安诺瓦电子科技有限公司 | Many picture output control methods and device |
| CN107135332A (en) * | 2017-05-10 | 2017-09-05 | 微鲸科技有限公司 | Show occlusion method, device, display device and readable storage medium storing program for executing |
| CN107197174A (en) * | 2017-05-12 | 2017-09-22 | 西安诺瓦电子科技有限公司 | Video controller and video control method |
| CN107295390A (en) * | 2017-08-10 | 2017-10-24 | 青岛海信电器股份有限公司 | Television pages switching method and device |
| WO2017193830A1 (en) * | 2016-05-11 | 2017-11-16 | 中兴通讯股份有限公司 | Video switching method, device and system, and storage medium |
| CN107749956A (en) * | 2017-09-27 | 2018-03-02 | 北京嗨动视觉科技有限公司 | Video source switches special efficacy realization device and video source switching special efficacy implementation method |
| CN108235106A (en) * | 2018-01-31 | 2018-06-29 | 聚好看科技股份有限公司 | A kind of method that video shelter figure is controlled on smart television |
| CN108881768A (en) * | 2017-05-11 | 2018-11-23 | 联咏科技股份有限公司 | The method and video conversion system of more new video setting |
| WO2019091128A1 (en) * | 2017-11-08 | 2019-05-16 | 深圳Tcl数字技术有限公司 | Signal preview method for new access source and television set |
| CN109905750A (en) * | 2017-12-07 | 2019-06-18 | 宏正自动科技股份有限公司 | Video streaming method for synchronously switching in Video Wall Display System |
| CN109951730A (en) * | 2017-12-21 | 2019-06-28 | 深圳市晟江科技有限公司 | A kind of method, system and the video terminal of video source switching |
| CN109963188A (en) * | 2017-12-22 | 2019-07-02 | 杭州海康威视数字技术股份有限公司 | Switching method, device, electronic equipment and the storage medium of video pictures |
| CN110121032A (en) * | 2018-02-06 | 2019-08-13 | 杭州海康威视数字技术股份有限公司 | A kind of method, apparatus, equipment and storage medium showing animation effect |
| CN110446072A (en) * | 2019-08-14 | 2019-11-12 | 咪咕视讯科技有限公司 | Video stream switching method, electronic equipment and storage medium |
| CN110769165A (en) * | 2018-07-25 | 2020-02-07 | 浙江宇视科技有限公司 | Video cutting display method and device |
| CN110995964A (en) * | 2018-10-03 | 2020-04-10 | 佳能株式会社 | Image pickup apparatus, control method thereof, and non-transitory storage medium |
| WO2020098504A1 (en) * | 2018-11-12 | 2020-05-22 | 青岛海信传媒网络技术有限公司 | Video switching control method and display device |
| CN112135176A (en) * | 2019-06-25 | 2020-12-25 | 西安诺瓦星云科技股份有限公司 | Video processing method, device and system and computer readable storage medium |
| TWI733402B (en) * | 2020-04-08 | 2021-07-11 | 香港商冠捷投資有限公司 | Display and its control method |
| CN113382196A (en) * | 2020-02-25 | 2021-09-10 | 杭州海康消防科技有限公司 | Scene switching method, system and device and video comprehensive processing platform |
| CN113438502A (en) * | 2021-05-27 | 2021-09-24 | 卡莱特云科技股份有限公司 | Video frame image transmission method, sending card and video frame image display system |
| CN113474749A (en) * | 2020-03-20 | 2021-10-01 | 西安诺瓦星云科技股份有限公司 | Screen display control method, device and system |
| CN115515005A (en) * | 2021-06-07 | 2022-12-23 | 京东方科技集团股份有限公司 | Method and device for acquiring cover of program switching and display equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102113323A (en) * | 2008-07-28 | 2011-06-29 | 汤姆森特许公司 | A method and apparatus for fast channel change using a secondary channel video stream |
| CN201928372U (en) * | 2010-11-15 | 2011-08-10 | 深圳市唯奥视讯技术有限公司 | Device for seamlessly switching various input video images |
| US20110216155A1 (en) * | 2004-07-27 | 2011-09-08 | Sony Corporation | Information-processing apparatus, information-processing methods, recording mediums, and programs |
-
2015
- 2015-07-15 CN CN201510415459.2A patent/CN105100644A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110216155A1 (en) * | 2004-07-27 | 2011-09-08 | Sony Corporation | Information-processing apparatus, information-processing methods, recording mediums, and programs |
| CN102113323A (en) * | 2008-07-28 | 2011-06-29 | 汤姆森特许公司 | A method and apparatus for fast channel change using a secondary channel video stream |
| CN201928372U (en) * | 2010-11-15 | 2011-08-10 | 深圳市唯奥视讯技术有限公司 | Device for seamlessly switching various input video images |
Cited By (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554416A (en) * | 2015-12-24 | 2016-05-04 | 深圳市捷视飞通科技股份有限公司 | FPGA (Field Programmable Gate Array)-based high-definition video fade-in and fade-out processing system and method |
| CN105704541A (en) * | 2016-01-07 | 2016-06-22 | 广州宏控电子科技有限公司 | Method for seamlessly switching videos |
| CN105704541B (en) * | 2016-01-07 | 2019-11-12 | 广州宏控电子科技有限公司 | A kind of video seamless handover method |
| CN105825831A (en) * | 2016-02-22 | 2016-08-03 | 杭州中威电子股份有限公司 | Flexible display method used for video monitoring equipment and flexible display device thereof |
| CN107370980A (en) * | 2016-05-11 | 2017-11-21 | 中兴通讯股份有限公司 | Video switching method, apparatus and system |
| WO2017193830A1 (en) * | 2016-05-11 | 2017-11-16 | 中兴通讯股份有限公司 | Video switching method, device and system, and storage medium |
| CN106060426A (en) * | 2016-07-01 | 2016-10-26 | 西安诺瓦电子科技有限公司 | Automatic application scene switching method and video controller |
| CN106060426B (en) * | 2016-07-01 | 2019-06-28 | 西安诺瓦星云科技股份有限公司 | Automatically switch the method and Video Controller of application scenarios |
| CN106101750A (en) * | 2016-08-08 | 2016-11-09 | 深圳市众幕电影科技有限公司 | Reflect front advertisement playing control system and control method thereof |
| CN106101750B (en) * | 2016-08-08 | 2022-11-11 | 深圳市众幕电影科技有限公司 | Advertisement playing control system before showing and control method thereof |
| CN106161995A (en) * | 2016-08-30 | 2016-11-23 | 厦门视诚科技有限公司 | The specially good effect switching device of Table top type Video processing control platform and specially good effect changing method |
| CN106375661A (en) * | 2016-09-21 | 2017-02-01 | 惠州Tcl移动通信有限公司 | Method and device for switching cameras of mobile terminal |
| CN106598516A (en) * | 2016-12-02 | 2017-04-26 | 广东威创视讯科技股份有限公司 | Data processing method and system for target window |
| CN106598516B (en) * | 2016-12-02 | 2019-09-17 | 广东威创视讯科技股份有限公司 | The data processing method and system of target window |
| CN106937159A (en) * | 2017-04-26 | 2017-07-07 | 西安诺瓦电子科技有限公司 | Many picture output control methods and device |
| CN107135332A (en) * | 2017-05-10 | 2017-09-05 | 微鲸科技有限公司 | Show occlusion method, device, display device and readable storage medium storing program for executing |
| CN108881768B (en) * | 2017-05-11 | 2020-12-11 | 联咏科技股份有限公司 | Method for updating video setting and video conversion system |
| CN108881768A (en) * | 2017-05-11 | 2018-11-23 | 联咏科技股份有限公司 | The method and video conversion system of more new video setting |
| CN107197174A (en) * | 2017-05-12 | 2017-09-22 | 西安诺瓦电子科技有限公司 | Video controller and video control method |
| CN107295390A (en) * | 2017-08-10 | 2017-10-24 | 青岛海信电器股份有限公司 | Television pages switching method and device |
| CN107749956A (en) * | 2017-09-27 | 2018-03-02 | 北京嗨动视觉科技有限公司 | Video source switches special efficacy realization device and video source switching special efficacy implementation method |
| WO2019091128A1 (en) * | 2017-11-08 | 2019-05-16 | 深圳Tcl数字技术有限公司 | Signal preview method for new access source and television set |
| CN109905750A (en) * | 2017-12-07 | 2019-06-18 | 宏正自动科技股份有限公司 | Video streaming method for synchronously switching in Video Wall Display System |
| CN109905750B (en) * | 2017-12-07 | 2021-07-23 | 宏正自动科技股份有限公司 | Synchronous switching method for image series flow in television wall system |
| CN109951730A (en) * | 2017-12-21 | 2019-06-28 | 深圳市晟江科技有限公司 | A kind of method, system and the video terminal of video source switching |
| CN109963188A (en) * | 2017-12-22 | 2019-07-02 | 杭州海康威视数字技术股份有限公司 | Switching method, device, electronic equipment and the storage medium of video pictures |
| CN108235106B (en) * | 2018-01-31 | 2020-10-30 | 聚好看科技股份有限公司 | Method for controlling video occlusion map on smart television and smart television |
| CN108235106A (en) * | 2018-01-31 | 2018-06-29 | 聚好看科技股份有限公司 | A kind of method that video shelter figure is controlled on smart television |
| CN110121032B (en) * | 2018-02-06 | 2021-07-09 | 杭州海康威视数字技术股份有限公司 | Method, device and equipment for displaying animation special effect and storage medium |
| CN110121032A (en) * | 2018-02-06 | 2019-08-13 | 杭州海康威视数字技术股份有限公司 | A kind of method, apparatus, equipment and storage medium showing animation effect |
| CN110769165A (en) * | 2018-07-25 | 2020-02-07 | 浙江宇视科技有限公司 | Video cutting display method and device |
| CN110995964A (en) * | 2018-10-03 | 2020-04-10 | 佳能株式会社 | Image pickup apparatus, control method thereof, and non-transitory storage medium |
| WO2020098504A1 (en) * | 2018-11-12 | 2020-05-22 | 青岛海信传媒网络技术有限公司 | Video switching control method and display device |
| CN112135176A (en) * | 2019-06-25 | 2020-12-25 | 西安诺瓦星云科技股份有限公司 | Video processing method, device and system and computer readable storage medium |
| CN110446072B (en) * | 2019-08-14 | 2021-11-23 | 咪咕视讯科技有限公司 | Video stream switching method, electronic device and storage medium |
| CN110446072A (en) * | 2019-08-14 | 2019-11-12 | 咪咕视讯科技有限公司 | Video stream switching method, electronic equipment and storage medium |
| CN113382196A (en) * | 2020-02-25 | 2021-09-10 | 杭州海康消防科技有限公司 | Scene switching method, system and device and video comprehensive processing platform |
| CN113382196B (en) * | 2020-02-25 | 2022-06-03 | 杭州海康消防科技有限公司 | Scene switching method, system and device and video comprehensive processing platform |
| CN113474749A (en) * | 2020-03-20 | 2021-10-01 | 西安诺瓦星云科技股份有限公司 | Screen display control method, device and system |
| CN113474749B (en) * | 2020-03-20 | 2024-02-09 | 西安诺瓦星云科技股份有限公司 | Screen display control method, device and system |
| TWI733402B (en) * | 2020-04-08 | 2021-07-11 | 香港商冠捷投資有限公司 | Display and its control method |
| CN113438502A (en) * | 2021-05-27 | 2021-09-24 | 卡莱特云科技股份有限公司 | Video frame image transmission method, sending card and video frame image display system |
| CN115515005A (en) * | 2021-06-07 | 2022-12-23 | 京东方科技集团股份有限公司 | Method and device for acquiring cover of program switching and display equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105100644A (en) | Seamless switching method for video source | |
| CN104917990B (en) | Video frame rate compensation is carried out by adjusting vertical blanking | |
| CN103903568B (en) | LED display control card | |
| CN201928372U (en) | Device for seamlessly switching various input video images | |
| CN105721818B (en) | A kind of signal conversion method and device | |
| CN103618869B (en) | Many picture video joining methods and device | |
| CN112104819B (en) | Multi-channel video synchronous switching system and method based on FPGA | |
| CN205069079U (en) | Multi -functional LED display screen control system | |
| CN106357998B (en) | A kind of OSD graph display processing unit | |
| CN201037989Y (en) | Synchronous all-colorful LED display control device | |
| CN104349124A (en) | Structure and method for expanding multi-screen display on video recorder | |
| CN202102690U (en) | All-color big screen display controller | |
| CN213342512U (en) | Play box and LED display device | |
| CN100576923C (en) | A kind of audio/video data transmission method based on the USB2.0 interface | |
| CN109714621A (en) | A kind of multichannel dynamic video analogy method and its processing system that timing is configurable | |
| CN105554416A (en) | FPGA (Field Programmable Gate Array)-based high-definition video fade-in and fade-out processing system and method | |
| CN102497526B (en) | Method and system for displaying multiple channels of video by same link | |
| CN204350147U (en) | Mixed video control device and display device | |
| CN109640003A (en) | A kind of quiet system and method switched only of ultra high-definition television broadcasting multichannel | |
| CN101707678B (en) | Osd controller | |
| CN204481952U (en) | A kind of based on the conference system that HD video switches and shooting is followed the tracks of | |
| CN103002313A (en) | Portable video signal testing equipment | |
| CN111309274B (en) | Synchronization system of spliced screen | |
| CN204859359U (en) | Full HD multimedia signal distributor | |
| CN204131610U (en) | A kind of HDMI (High Definition Multimedia Interface) HDMI dual display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |