CN108769609A - A kind of image display method and device - Google Patents
A kind of image display method and device Download PDFInfo
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- CN108769609A CN108769609A CN201810614670.0A CN201810614670A CN108769609A CN 108769609 A CN108769609 A CN 108769609A CN 201810614670 A CN201810614670 A CN 201810614670A CN 108769609 A CN108769609 A CN 108769609A
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- Prior art keywords
- synchronization request
- decoding channels
- request information
- sent
- updated
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
Abstract
The invention discloses a kind of image display method and device, the method includes：Receive the first synchronization request information that decoding channels are sent；First quantity of the synchronization request information received currently preserved is updated；According to updated first quantity, if it is determined that receiving the synchronization request information that each decoding channels being connect with itself are sent；According to the first synchronization request information received, reference information is generated, and be sent to each decoding channels.In inventive embodiments, when control device judges to receive the synchronization request information that each decoding channels connecting with itself are sent, reference information is generated according to the first synchronization request information being most recently received received, therefore it can ensure that each decoding channels can determine the video frame shown according to reference information, and then each decoding channels are according to reference information, decoded video is shown into corresponding display area on a display screen, ensures display window simultaneous display video pictures.
Description
Technical field
The present invention relates to technical field of video processing more particularly to a kind of image display methods and device.
Background technology
In field of video monitoring, multiple display screens can be generally spliced into a fusion screen, gone out in fusion screen display
Whole video pictures, as shown in Figure 1, each display screen is a display window, the fusion screen in Fig. 1 includes 4 display windows.Separately
Outside, each display window includes multiple decoding channels, and the collected video pictures of video capture device are carried out by decoding channels
After decoding process, it is shown in the corresponding display area of decoding channels.
Carry out the process schematic that shows of video pictures in the prior art as shown in Fig. 2, when decoding channels recognize it is new
When video information, synchronization request information is sent to control device, the synchronization request information that control device is received with first is
Benchmark sends reference information to each decoding channels, includes frame number information and timestamp information in reference information, and abandon 1
Remaining the synchronization request information received in second.Each decoding channels according in the reference information received frame number information and the time
Information is stabbed, includes in corresponding display area by video.
The prior art carry out video pictures show the problem is that, if due to network delay etc., control device
After receiving first synchronization request information, it is possible to receive synchronization request information again after 1 second, can thus lead
Control device is caused to send more than 1 reference information, decoding channels receive reference information every time will be according to newest benchmark
Information is decoded display, this may result in video pictures frequent switching.Moreover, when receive first synchronization request information it
After send reference information, at this moment will appear and send the decoding channels of first synchronization request information and first carry out video and show, and its
His decoding channels are possible to not receive video information also, and decoding channels other in this way can postpone progress video and show, this
Sample may result in the problem of each display window is unable to simultaneous display video pictures.
Invention content
An embodiment of the present invention provides a kind of image display method and device, to solve in the prior art, display window is not
The problem of energy simultaneous display video pictures.
An embodiment of the present invention provides a kind of image display method, the method includes：
Control device receives the first synchronization request information that decoding channels are sent；
First quantity of the synchronization request information received currently preserved is updated；
According to updated first quantity, judge whether to receive synchronous with each decoding channels transmission of itself connection
Solicited message；
If so, according to the first synchronization request information received, reference information is generated, and is sent to described each
Decoding channels.
Further, the first synchronization request information that the basis receives generates reference information, and is sent to institute
After stating each decoding channels, the method further includes：
It is sent to each decoding channels and carries the idsplay order for showing the time, instruction each decoding is led to described
Show the corresponding decoded video information of time showing, wherein the display time is the time for sending the idsplay order
Point delays the time point determined after predetermined time period.
Further, the idsplay order that the carrying display time is sent to each decoding channels includes：
It is sent to each decoding channels by peripheral interconnection standards PCIE buses and carries the display for showing the time
Instruction.
Further, first quantity to the synchronization request information received currently preserved is updated packet
It includes：
Identification sends the identification information of the decoding channels of the first synchronization request information, is determined according to the identification information
Display screen belonging to the decoding channels；
To the first subnumber amount of the synchronization request information that each decoding channels of the display screen belonging to receiving are sent
It is updated；
Judge whether updated first subnumber amount is identical as the second subnumber amount of the decoding channels of the affiliated display screen,
If so, the first quantity of the display screen to the reception of synchronization request information is completed is updated；
It is described according to updated first quantity, judge whether to receive the synchronization request that each decoding channels are sent
Information includes：
According to updated first quantity and the second quantity of the display screen of connection, judge whether to receive described every
The synchronization request information that a decoding channels are sent.
Further, first quantity to the synchronization request information received currently preserved is updated packet
It includes：
Identification sends the identification information of the decoding channels of the first synchronization request information, is had received to what is currently preserved
First quantity of the decoding channels of synchronization request information is updated；
It is described according to updated first quantity, judge whether to receive the synchronization request that each decoding channels are sent
Information includes：
According to updated first quantity and the third quantity of decoding channels, judge whether to receive each solution
The synchronization request information that code channel is sent.
On the other hand, an embodiment of the present invention provides a kind of video display devices, described device includes：
Receiving module, the first synchronization request information for receiving decoding channels transmission；
Update module is updated for the first quantity to the synchronization request information received currently preserved；
Judgment module, for according to updated first quantity, judging whether to receive each decoding connecting with itself
The synchronization request information that channel is sent；
First sending module, if the synchronization request letter sent for receiving each decoding channels being connect with itself
Breath generates reference information, and be sent to each decoding channels according to the first synchronization request information received.
Further, described device further includes：
Second sending module carries the idsplay order for showing the time for being sent to each decoding channels, indicates institute
It states each decoding and leads to decoded video information corresponding in the display time showing, wherein the display time is to send
The time point of the idsplay order delays the time point determined after predetermined time period.
Further, second sending module is specifically used for through peripheral interconnection standards PCIE buses to described
Each decoding channels send the idsplay order for carrying and showing the time.
Further, the update module is specifically used for the decoding channels that identification sends the first synchronization request information
Identification information, the display screen belonging to the decoding channels is determined according to the identification information；To described aobvious belonging to receiving
First subnumber amount of the synchronization request information that each decoding channels of display screen are sent is updated；Judge updated first subnumber
Whether amount is identical as the second subnumber amount of the decoding channels of the affiliated display screen, if so, to synchronization request information is completed
First quantity of the display screen of reception is updated；
The judgment module is specifically used for the second number according to updated first quantity and the display screen of connection
Amount judges whether to receive the synchronization request information that each decoding channels are sent.
Further, the update module is specifically used for the decoding channels that identification sends the first synchronization request information
Identification information, the first quantity of the decoding channels for having received synchronization request information to currently preserving is updated；
The judgment module is specifically used for the third quantity according to updated first quantity and decoding channels, sentences
The disconnected synchronization request information for whether receiving each decoding channels and sending.
An embodiment of the present invention provides a kind of image display method and device, the method includes：Control device receives solution
The first synchronization request information that code channel is sent；First quantity of the synchronization request information received currently preserved is carried out
Update；According to updated first quantity, judge whether to receive with each decoding channels of itself connection send synchronization ask
Seek information；If so, according to the first synchronization request information received, reference information is generated, and is sent to described each
Decoding channels.Since in inventive embodiments, control device judges to receive what each decoding channels connecting with itself were sent
When synchronization request information, reference information is sent to each decoding channels, thereby may be ensured that each decoding channels receive benchmark
When information, video information is all had been received that.And reference information is synchronized according to first be most recently received received
What solicited message generated, therefore can ensure that each decoding channels can determine the video shown according to reference information
Frame, and then decoded video is shown corresponding display area on a display screen by each decoding channels according to reference information.
To ensure display window simultaneous display video pictures.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is that structural schematic diagram is shielded in fusion in the prior art；
Fig. 2 is the process schematic for carrying out video pictures in the prior art and showing；
Fig. 3 is a kind of video display process schematic diagram that the embodiment of the present invention 1 provides；
Fig. 4 is a kind of video display process schematic diagram that the embodiment of the present invention 3 provides；
Fig. 5 is another video display process schematic diagram that the embodiment of the present invention 3 provides；
Fig. 6 is a kind of video display process schematic diagram that the embodiment of the present invention 4 provides；
Fig. 7 is a kind of video display devices structural schematic diagram provided in an embodiment of the present invention.
Specific implementation mode
The present invention will be describe below in further detail with reference to the accompanying drawings, it is clear that described embodiment is only this
Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist
The all other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Embodiment 1：
Fig. 3 is a kind of video display process schematic diagram provided in an embodiment of the present invention, which includes the following steps：
S301：Control device receives the first synchronization request information that decoding channels are sent.
Image display method provided in an embodiment of the present invention is applied to control device, which can be PC, tablet
Apparatus such as computer.
During video is shown, collected video information is sent to display screen, display screen by video capture device
In include multiple decoding channels, each decoding channels need the video information sent to video capture device to be decoded processing,
And then the video information after decoding process is shown on a display screen.In embodiments of the present invention, each display screen is one aobvious
Show window.
In embodiments of the present invention, decoding channels are being decoded processing to the video information that video capture device is sent
Afterwards, synchronization request information is sent to control device, when receiving the reference information of control device transmission, then will be after decoding process
Video information show on a display screen.Since each decoding capability led to that decodes is not exactly the same, and by network item
The limitation of part, the time that each decoding channels send synchronization request information have difference, the solution that control device will be currently received
The synchronization request information that code channel is sent is as the first synchronization request information.
S302：First quantity of the synchronization request information received currently preserved is updated.
Control device often receives a synchronization request information, the synchronization request information preservation that will be received, and works as and connect
After the first synchronization request information for receiving decoding channels transmission, to the first of the synchronization request information received currently preserved
Quantity is updated.Specifically, counter can be installed in control device, a synchronization request information, counter are often received
Add 1, to realize the update to the first quantity of the synchronization request information received.
S303：According to updated first quantity, judge whether that receiving each decoding channels being connect with itself sends
Synchronization request information.
Control device pre-saves the quantity information for each decoding channels being connect with itself, and control device is to having received
After the first quantity update of the synchronization request information arrived, according to updated first quantity, judge whether to receive and itself
The synchronization request information that each decoding channels of connection are sent.Specifically, control device may determine that updated first quantity
It is whether consistent with the quantity information of each decoding channels being connect with itself pre-saved, if unanimously, illustrating to have connect
Receive the synchronization request information that each decoding channels for being connect with itself are sent, if it is inconsistent, explanation do not receive also with
The synchronization request information that each decoding channels of itself connection are sent.
S304：If so, according to the first synchronization request information received, reference information is generated, and be sent to institute
State each decoding channels.
If control device determines the synchronization request information that each decoding channels for having been received and being connect with itself are sent,
Then control device generates reference information according to the first synchronization request information being most recently received.Specifically, what decoding channels were sent
Carry frame number information and timestamp information in synchronization request information, control device by parsing the first synchronization request information,
The frame number information and timestamp information in the first synchronization request information can be obtained, and according in the first synchronization request information
Frame number information and timestamp information generate reference information.And reference information is sent to each decoding channels, decoding channels root
According to the frame number information and timestamp information in reference information, carries out video and show.
If control device determines the synchronization request information that each decoding channels for not receiving also and being connect with itself are sent,
It then continues waiting for receiving the synchronization request information that decoding channels are sent, until each solution connecting with itself has been received in determination
When the synchronization request information that code channel is sent, the step of carrying out generation reference information.
Wherein, decoding channels carry out the mistake that video is shown according to the frame number information and timestamp information in reference information
Journey belongs to the prior art, no longer repeats herein the process.
Since in inventive embodiments, control device judges to receive the same of each decoding channels transmission connecting with itself
When walking solicited message, reference information is sent to each decoding channels, thereby may be ensured that each decoding channels receive benchmark letter
When breath, video information is all had been received that.And reference information is asked according to the first synchronization being most recently received received
It asks information to generate, therefore can ensure that each decoding channels can determine the video frame shown according to reference information,
And then decoded video is shown corresponding display area on a display screen by each decoding channels according to reference information.From
And ensure display window simultaneous display video pictures.
Embodiment 2：
Due to the limitation of network condition, control device sends reference information, and each decoding channels to each decoding channels
The time for receiving reference information may be different, if the time that each decoding channels receive reference information is different, and
It is just shown according to reference information progress video after receiving reference information, then will appear video and show nonsynchronous problem.Therefore,
In order to further ensure display window simultaneous display video pictures, on the basis of the above embodiments, in embodiments of the present invention,
The first synchronization request information that the basis receives, generate reference information, and be sent to each decoding channels it
Afterwards, the method further includes：
It is sent to each decoding channels and carries the idsplay order for showing the time, instruction each decoding is led to described
Show the corresponding decoded video information of time showing, wherein the display time is the time for sending the idsplay order
Point delays the time point determined after predetermined time period.
Control device is generating reference information, and is sent to after each decoding channels, is sent out to each decoding channels
Send the idsplay order for carrying and showing the time, wherein the display time is to delay predetermined time period at the time point of transmission idsplay order
Determining time point afterwards.The time point for sending idsplay order can be identical or different with the time point for sending reference information, presets
Time span is smaller time span, can be 50 milliseconds, 80 milliseconds, 100 milliseconds etc..Decoding channels receive display and refer to
After order, according to the corresponding decoded video information of display time showing in idsplay order.Wherein, reach show the time it
Before, each decoding channels abandon video frame, when reach show the time when, stop abandoning video frame, and from the video being not dropped
Frame starts to show.
For example, the frame number information in the reference information that decoding channels receive is the 25th frame, timestamp information is 100 millis
Second, the display time carried in the idsplay order received be 8 points 10 seconds 05 minute 80 milliseconds.Then reach at 8 points 10 seconds 05 minute 80
Before at the time of millisecond, decoding channels abandon video frame.For example, after decoding channels have abandoned 10 frames, reach at 8 points 05 minute and 10 seconds
80 milliseconds, then show video information since 25+10=35 frames.
Show that the display of time refers to since in embodiments of the present invention, control device sends to carry to each decoding channels
It enables, indicates that decoded video information corresponding in display time showing is led in each decoding, it is ensured that each in the display time
Decoding channels have received reference information, therefore can be further ensured that display window simultaneous display video pictures.
In order to improve the efficiency for sending idsplay order, and ensure to show the validity of time, in embodiments of the present invention, institute
It states to send to carry to each decoding channels and shows that the idsplay order of time includes：
It is sent to each decoding channels by peripheral interconnection standards PCIE buses and carries the display for showing the time
Instruction.
It is sent to each decoding channels by PCIE buses and carries the idsplay order for showing the time, network environment can be avoided
Unstable limitation, also, sent faster compared to by network by the speed of PCIE buses transmission idsplay order, therefore energy
It is enough to improve the efficiency for sending idsplay order.Simultaneously as idsplay order can be sent to each decoding channels quickly, will not go out
It now reaches when showing the time, the case where each decoding channels do not receive idsplay order also, therefore can ensure in idsplay order
The validity of the display time of carrying.
Embodiment 3：
In order to keep the synchronization request information for judging whether to receive each decoding channels transmission more acurrate, in above-mentioned each implementation
On the basis of example, in embodiments of the present invention, first quantity to the synchronization request information received currently preserved
Be updated including：
Identification sends the identification information of the decoding channels of the first synchronization request information, is determined according to the identification information
Display screen belonging to the decoding channels；
To the first subnumber amount of the synchronization request information that each decoding channels of the display screen belonging to receiving are sent
It is updated；
Judge whether updated first subnumber amount is identical as the second subnumber amount of the decoding channels of the affiliated display screen,
If so, the first quantity of the display screen to the reception of synchronization request information is completed is updated；
It is described according to updated first quantity, judge whether to receive the synchronization request that each decoding channels are sent
Information includes：
According to updated first quantity and the second quantity of the display screen of connection, judge whether to receive described every
The synchronization request information that a decoding channels are sent.
Control device preserves the identification information for the decoding channels for including in each display screen, the synchronization that decoding channels are sent
The identification information of itself is carried in solicited message.Control device receives the first synchronization request information of decoding channels transmission
Afterwards, the identification information that can identify the decoding channels of the first synchronization request information includes according in each display screen of preservation
Decoding channels identification information, determine send the first synchronization request information decoding channels belonging to display screen.
In turn, the first subnumber of the synchronization request information that control device sends each decoding channels of affiliated display screen
Amount is updated.Specifically, counter can be installed in control device, the decoding channels of the display screen belonging to one are often received
The synchronization request information of transmission, the first subnumber amount add 1, to realize the update to the first subnumber amount of synchronization request information.And
Judge whether updated first subnumber amount is identical as the second subnumber amount of the decoding channels of affiliated display screen, if identical,
Illustrate that control device has received the synchronization request information that each decoding channels of affiliated display screen are sent, that is, completes institute
Belong to display screen synchronization request information receive, at this point, to be completed synchronization request information reception display screen the first quantity into
Row update.And judge whether the second quantity of the display screen of updated first quantity and connection is identical, if identical, illustrates
The synchronization request information that each decoding channels are sent is received, if it is not the same, then illustrating not receiving each decoding channels also
The synchronization request information of transmission.
It is illustrated below by a specific example.
For example, being connect with control device there are two display screen, respectively display screen 1 and display screen 2, include in display screen 1
Decoding channels a1, b1, c1, d1 include decoding channels a2, b2, c2, d2 in display screen 2.Wherein, display screen 1 and display screen 2 be all
It is fusion screen.Each fusion screen is made of 4 independent screen splicings.One independent screen corresponds to a decoding channels.Control
Control equipment receives the first synchronization request information, and identifies that the identification information of the decoding channels of the first synchronization request information is
A1, it is determined that the display screen sent belonging to the decoding channels of the first synchronization request information is display screen 1, then to the every of display screen 1
First subnumber amount of the synchronization request information that a decoding channels are sent adds 1, and when the first subnumber amount is 4, then explanation receives aobvious
The synchronization request information that each decoding channels of display screen 1 are sent, at this time to the display screen of synchronization request information reception is completed
First quantity adds 1.When the first quantity is 2, the first quantity is identical as the second quantity of display screen, and explanation receives each at this time
The synchronization request information that decoding channels are sent illustrates also not at this time if the first quantity and the second quantity of display screen differ
Receive the synchronization request information that each decoding channels are sent in display screen 2.
In addition, the simultaneous display of different pictures may be implemented in image display method provided in an embodiment of the present invention.For example, with
There are four display screens, respectively display screen 1, display screen 2, display screen 3 and display screen 4 for control device connection, wherein each display
Only there are one decoding channels, display screen 1 and the complete picture a of 2 tiled display of display screen one, display screen 3 and display screens 4 to spell for screen
Meet one complete picture b of display.When control device receives the first synchronization request information, the first synchronization request information is identified
Decoding channels identification information, and determine send the first synchronization request information decoding channels belonging to display screen, it is right at this time
The first quantity that the display screen of synchronization request information reception is completed adds 1.When the first quantity is 4, the first quantity and display screen
The second quantity it is identical, illustrate to receive the synchronization request information that each decoding channels are sent, at this time according to first received
Synchronization request information generates reference information, and is sent to each decoding channels.In this way, each decoding channels are according to reference information
It carries out video to show, the simultaneous display of picture a and picture b may be implemented.
Fig. 4 is video display process schematic diagram provided in an embodiment of the present invention, which includes the following steps：
S401：Control device receives the first synchronization request information that decoding channels are sent.
S402：Identification sends the identification information of the decoding channels of the first synchronization request information, is believed according to the mark
Breath determines the display screen belonging to the decoding channels；Each decoding channels of the display screen belonging to receiving are sent same
First subnumber amount of step solicited message is updated；Judge that updated first subnumber amount and the decoding of the affiliated display screen are logical
Whether the second subnumber amount in road is identical, if so, the first quantity of the display screen to the reception of synchronization request information is completed carries out
Update.
S403：According to updated first quantity and the second quantity of the display screen of connection, judge whether to receive
The synchronization request information that each decoding channels are sent.
S404：If so, according to the first synchronization request information received, reference information is generated, and be sent to institute
State each decoding channels.
Fig. 5 is video display process schematic diagram provided in an embodiment of the present invention, as shown in figure 5, control device connects two
Display screen, the two display screens are all fusion screens, and two display screens show picture 1 and picture 2 respectively.Each picture is solved by 4
Code channel tiled display receives the synchronization request that the last one decoding channels of the display screen are sent for each display screen
When information, counter adds 1, when the count value of counter be 2 when, that is, it is identical as display screen quantity when, according to what is received
The last one synchronization request information generates reference information, and mass-sends to each decoding channels.
Since in embodiments of the present invention, control device identification sends the mark of the decoding channels of the first synchronization request information
Information determines the display screen belonging to decoding channels, is then sent to each decoding channels of the affiliated display screen received same
First subnumber amount of step solicited message is updated；When the of the decoding channels of updated first subnumber amount and affiliated display screen
When two subnumber amounts are identical, it is updated to the first quantity of display screen of synchronization request information reception is completed；After update
The first quantity and connection display screen the second quantity, judge whether to receive the synchronization that each decoding channels are sent and ask
Seek information.Therefore make the synchronization request information for judging whether to receive each decoding channels transmission more acurrate.
Embodiment 4：
In order to keep the synchronization request information for judging whether to receive each decoding channels transmission more acurrate, in above-mentioned each implementation
On the basis of example, in embodiments of the present invention, first quantity to the synchronization request information received currently preserved
Be updated including：
Identification sends the identification information of the decoding channels of the first synchronization request information, is had received to what is currently preserved
First quantity of the decoding channels of synchronization request information is updated；
It is described according to updated first quantity, judge whether to receive the synchronization request that each decoding channels are sent
Information includes：
According to updated first quantity and the third quantity of decoding channels, judge whether to receive each solution
The synchronization request information that code channel is sent.
Preserve the identification information of each decoding channels in control device, control device receives the of decoding channels transmission
After one synchronizes solicited message, identification sends the identification information of the decoding channels of the first synchronization request information, and to currently preserving
The first quantity for having received the decoding channels of synchronization request information is updated.And then judge updated first quantity and solution
Whether the third quantity in code channel is identical, if identical, explanation receives the synchronization request letter that each decoding channels are sent at this time
Breath, if it is not the same, illustrating not receiving the synchronization request information that each decoding channels are sent also at this time.
For example, control device preserves 8 decoding channels, respectively decoding channels m1, m2, m3, m4, m5, m6, m7, m8.
Control device receives the first synchronization request information, and identifies that the identification information of the decoding channels of the first synchronization request information is
M8, it is determined that the decoding channels for sending the first synchronization request information are decoding channels m8, to having received synchronization request information
First quantity of decoding channels adds 1, and when the first quantity is 8, the first quantity is identical as the third quantity of decoding channels, says at this time
The bright synchronization request information for receiving each decoding channels and sending, if the third quantity of the first quantity and decoding channels not phase
Together, illustrate not receiving the synchronization request information that each decoding channels are sent also at this time.
Fig. 6 is video display process schematic diagram provided in an embodiment of the present invention, which includes the following steps：
S601：Control device receives the first synchronization request information that decoding channels are sent.
S602：Identification sends the identification information of the decoding channels of the first synchronization request information, to currently preserving
The first quantity for receiving the decoding channels of synchronization request information is updated.
S603：According to updated first quantity and the third quantity of decoding channels, judge whether to receive described
The synchronization request information that each decoding channels are sent.
S604：If so, according to the first synchronization request information received, reference information is generated, and be sent to institute
State each decoding channels.
Since in embodiments of the present invention, control device identification sends the decoding channels of the first synchronization request information
First quantity of identification information, the decoding channels for having received synchronization request information to currently preserving is updated, Jin Ergen
According to updated first quantity and the third quantity of decoding channels, judge whether that receiving each decoding channels sends
Synchronization request information.Therefore make the synchronization request information for judging whether to receive each decoding channels transmission more acurrate.
Fig. 7 is video display devices structural schematic diagram provided in an embodiment of the present invention, which includes：
Receiving module 71, the first synchronization request information for receiving decoding channels transmission；
Update module 72 is updated for the first quantity to the synchronization request information received currently preserved；
Judgment module 73, for according to updated first quantity, judging whether to receive each solution connecting with itself
The synchronization request information that code channel is sent；
First sending module 74, if the synchronization request letter sent for receiving each decoding channels being connect with itself
Breath generates reference information, and be sent to each decoding channels according to the first synchronization request information received.
Described device further includes：
Second sending module 75 carries the idsplay order for showing the time, instruction for being sent to each decoding channels
Decoded video information corresponding in the display time showing is led in each decoding, wherein the display time is hair
The time point determined after sending the time point of the idsplay order to delay predetermined time period.
Second sending module 75 is specifically used for passing through peripheral interconnection standards PCIE buses to each decoding
Channel sends the idsplay order for carrying and showing the time.
The update module 72 is specifically used for the mark letter that identification sends the decoding channels of the first synchronization request information
Breath, the display screen belonging to the decoding channels is determined according to the identification information；To the every of the display screen belonging to receiving
First subnumber amount of the synchronization request information that a decoding channels are sent is updated；Judge updated first subnumber amount with it is affiliated
Whether the second subnumber amount of the decoding channels of the display screen is identical, if so, being shown to synchronization request information reception is completed
First quantity of display screen is updated；
The judgment module 73 is specifically used for the second number according to updated first quantity and the display screen of connection
Amount judges whether to receive the synchronization request information that each decoding channels are sent.
The update module 72 is specifically used for the mark letter that identification sends the decoding channels of the first synchronization request information
Breath, the first quantity of the decoding channels for having received synchronization request information to currently preserving are updated；
The judgment module 73 is specifically used for the third quantity according to updated first quantity and decoding channels,
Judge whether to receive the synchronization request information that each decoding channels are sent.
An embodiment of the present invention provides a kind of image display method and device, the method includes：Control device receives solution
The first synchronization request information that code channel is sent；First quantity of the synchronization request information received currently preserved is carried out
Update；According to updated first quantity, judge whether to receive with each decoding channels of itself connection send synchronization ask
Seek information；If so, according to the first synchronization request information received, reference information is generated, and is sent to described each
Decoding channels.Since in inventive embodiments, control device judges to receive what each decoding channels connecting with itself were sent
When synchronization request information, reference information is sent to each decoding channels, thereby may be ensured that each decoding channels receive benchmark
When information, video information is all had been received that.And reference information is synchronized according to first be most recently received received
What solicited message generated, therefore can ensure that each decoding channels can determine the video shown according to reference information
Frame, and then decoded video is shown corresponding display area on a display screen by each decoding channels according to reference information.
To ensure display window simultaneous display video pictures.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of image display method, which is characterized in that the method includes：
Control device receives the first synchronization request information that decoding channels are sent；
First quantity of the synchronization request information received currently preserved is updated；
According to updated first quantity, judge whether to receive the synchronization request that each decoding channels connecting with itself are sent
Information；
If so, according to the first synchronization request information received, reference information is generated, and be sent to each decoding
Channel.
2. the method as described in claim 1, which is characterized in that the first synchronization request information that the basis receives,
Reference information is generated, and is sent to after each decoding channels, the method further includes：
It is sent to each decoding channels and carries the idsplay order for showing the time, instruction each decoding is led in the display
The corresponding decoded video information of time showing, wherein the display time is to send time point of the idsplay order to prolong
The time point determined after predetermined time period afterwards.
3. method as claimed in claim 2, which is characterized in that described sent to each decoding channels carries the display time
Idsplay order include：
It is sent to each decoding channels by peripheral interconnection standards PCIE buses and carries the idsplay order for showing the time.
4. the method as described in claim 1, which is characterized in that the synchronization request information received to currently preserving
The first quantity be updated including：
Identification sends the identification information of the decoding channels of the first synchronization request information, according to identification information determination
Display screen belonging to decoding channels；
First subnumber amount of the synchronization request information sent to each decoding channels of the display screen belonging to receiving carries out
Update；
Judge whether updated first subnumber amount is identical as the second subnumber amount of the decoding channels of the affiliated display screen, if
It is to be updated to the first quantity of display screen of synchronization request information reception is completed；
It is described according to updated first quantity, judge whether to receive the synchronization request information that each decoding channels are sent
Including：
According to updated first quantity and the second quantity of the display screen of connection, judge whether to receive each solution
The synchronization request information that code channel is sent.
5. the method as described in claim 1, which is characterized in that the synchronization request information received to currently preserving
The first quantity be updated including：
Identification sends the identification information of the decoding channels of the first synchronization request information, and synchronization is had received to what is currently preserved
First quantity of the decoding channels of solicited message is updated；
It is described according to updated first quantity, judge whether to receive the synchronization request information that each decoding channels are sent
Including：
According to updated first quantity and the third quantity of decoding channels, judge whether that receiving each decoding leads to
The synchronization request information that road is sent.
6. a kind of video display devices, which is characterized in that described device includes：
Receiving module, the first synchronization request information for receiving decoding channels transmission；
Update module is updated for the first quantity to the synchronization request information received currently preserved；
Judgment module, for according to updated first quantity, judging whether to receive each decoding channels connecting with itself
The synchronization request information of transmission；
First sending module, if the synchronization request information sent for receiving each decoding channels being connect with itself, root
According to the first synchronization request information received, reference information is generated, and be sent to each decoding channels.
7. device as claimed in claim 6, which is characterized in that described device further includes：
Second sending module carries the idsplay order for showing the time for being sent to each decoding channels, indicates described every
A decoding channels are in the corresponding decoded video information of the display time showing, wherein the display time is transmission institute
The time point for stating idsplay order delays the time point determined after predetermined time period.
8. device as claimed in claim 7, which is characterized in that second sending module, specifically for passing through peripheral
Interconnection standards PCIE buses send to each decoding channels and carry the idsplay order for showing the time.
9. device as claimed in claim 6, which is characterized in that the update module is specifically used for identification and sends described first
The identification information of the decoding channels of synchronization request information determines the display belonging to the decoding channels according to the identification information
Screen；First subnumber amount of the synchronization request information sent to each decoding channels of the display screen belonging to receiving carries out more
Newly；Judge whether updated first subnumber amount is identical as the second subnumber amount of the decoding channels of the affiliated display screen, if
It is to be updated to the first quantity of display screen of synchronization request information reception is completed；
The judgment module is specifically used for the second quantity according to updated first quantity and the display screen of connection, sentences
The disconnected synchronization request information for whether receiving each decoding channels and sending.
10. device as claimed in claim 6, which is characterized in that the update module is specifically used for identification and sends described first
The identification information of the decoding channels of synchronization request information, to the decoding channels for having received synchronization request information that currently preserve
First quantity is updated；
The judgment module, specifically for the third quantity according to updated first quantity and decoding channels, judgement is
The no synchronization request information for receiving each decoding channels and sending.
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| CN110012240A (en) * | 2019-05-14 | 2019-07-12 | 威创集团股份有限公司 | A kind of signal source switch method, system, storage medium and control host |
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