CN106331591B - The method for synchronously switching and device of monitored picture - Google Patents
The method for synchronously switching and device of monitored picture Download PDFInfo
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Abstract
The invention discloses a kind of method for synchronously switching of monitored picture and devices.Wherein, the method for synchronously switching of monitored picture includes: in the case where receiving the first order from control client, the mark of synchronous window is sent to controlling client, wherein, first orders the encoding stream for requesting later scene picture, and synchronous window is the display window for showing later scene picture；Encoding stream is obtained according to the first order；Encoding stream is decoded, decoded information is obtained；And in the case where receiving from the second order of control client, decoded information is sent to synchronous window, wherein the second order is for requesting display later scene picture, and the second order includes the mark of synchronous window.The present invention solve in the prior art monitored picture can not synchronism switching the technical issues of.
Description
Technical field
The present invention relates to field of video monitoring, in particular to the method for synchronously switching and device of a kind of monitored picture.
Background technique
Fig. 1 is the system diagram for carrying out video monitoring in the prior art, as shown in Figure 1, video monitoring system mainly includes electricity
It (mainly include network monitoring point, digital hard disk recording depending on wall, decoder/screen controller, control client, front network source
Machine DCV and digital video code DVS) and monitoring network including interchanger.
Such video monitoring system, mainly realizes wall on monitored picture by two major classes equipment, this two major classes equipment includes
Net control device and analog control equipment.Wherein, net control device includes network decoder, web screen controller, number
Word matrix.Analog control equipment includes analog decoder, analog controller, analog matrix.These two types of equipment are in code stream input, code
The characteristics of stream decoding and code stream output facet, is as shown in table 1:
Table 1
| Analog control equipment | Net control device | |
| Input | In real time, no-delay, it is synchronous | It needs network to take stream, there is delay, it is asynchronous |
| Decoding | Nothing | It needs to decode |
| Output | It is no-delay | It is almost no-delay |
As can be seen from Table 1, monitored picture needs shown in a manner of picture composition on video wall, simulation control
The synchronism switching of monitored picture may be implemented in control equipment.And in terms of net control device is due to code stream input and code stream decoding
Delay, there are problems that can not synchronism switching monitoring.
For above-mentioned problem, currently no effective solution has been proposed.
Summary of the invention
The embodiment of the invention provides a kind of method for synchronously switching of monitored picture and devices, at least to solve the prior art
Middle monitored picture can not synchronism switching the technical issues of.
According to an aspect of an embodiment of the present invention, a kind of method for synchronously switching of monitored picture is provided, comprising: connecing
In the case where receiving the first order from control client, the mark of synchronous window is sent to the control client, wherein
Described first orders the encoding stream for requesting later scene picture, and the synchronous window is for showing that the later scene is drawn
The display window in face；The encoding stream is obtained according to first order；The encoding stream is decoded, decoded information is obtained；And
In the case where receiving from the second order of the control client, the decoded information is sent to the synchronous window,
Wherein, second order shows the later scene picture for requesting, and second order includes the synchronous window
The mark of mouth.
Further, obtaining the encoding stream according to first order includes: application target resource, wherein the mesh
Mark resource is for obtaining the encoding stream and decoding the resource of the encoding stream；And utilize the target resource applied
The encoding stream is obtained according to first order.
Further, application target resource includes: to judge whether with idle first passage and second channel, wherein
The first passage is the channel for obtaining the encoding stream, and the second channel is the channel for decoding the encoding stream；?
Judge the first passage for having idle, and in the case where the second channel with the free time, determines the described of free time
First passage and the idle second channel are the target resource；And judging to lead to without idle described first
Road or without the idle second channel in the case where, the channel that release maintains current scene picture show, obtain described in
Target resource.
Further, the channel that release maintains current scene picture to show includes: that control shows the current scene picture
Current window stop Dynamically Announce.
Further, obtaining the encoding stream according to first order includes: parsing first order, is obtained described
The address information of the address of the later scene picture is indicated in first order；And obtain the code with the address information
Stream, obtains the encoding stream.
According to another aspect of an embodiment of the present invention, a kind of synchronous switching device of monitored picture is additionally provided, comprising: the
One Transmit-Receive Unit, for sending the mark of synchronous window extremely in the case where receiving from the first order of control client
The control client, wherein described first orders the encoding stream for requesting later scene picture, and the synchronous window is to use
In the display window for showing the later scene picture；Acquiring unit, for obtaining the encoding stream according to first order；
Decoding unit obtains decoded information for decoding the encoding stream；And second Transmit-Receive Unit, for receiving from institute
In the case where the second order for stating control client, the decoded information is sent to the synchronous window, wherein second life
It enables for requesting to show the later scene picture, and second order includes the mark of the synchronous window.
Further, the acquiring unit includes: application subelement, for applying for target resource, wherein the target money
Source is for obtaining the encoding stream and decoding the resource of the encoding stream；And first obtain subelement, for using application
The target resource arrived obtains the encoding stream according to first order.
Further, the application subelement includes: judgment module, for judging whether with idle first passage and
Second channel, wherein the first passage is the channel for obtaining the encoding stream, and the second channel is to decode the volume
The channel of code stream；Determining module for judging in the judgment module with the idle first passage, and has the free time
The second channel in the case where, determine the idle first passage and the idle second channel be that the target provides
Source；And release module, for judging without the idle first passage in the judgment module or not having the free time
The second channel in the case where, release maintains the channel that shows of current scene picture, obtains the target resource.
Further, the release module includes: control submodule, shows working as the current scene picture for controlling
Front window stops Dynamically Announce.
Further, the acquiring unit includes: parsing subunit, for parsing first order, obtains described the
The address information of the address of the later scene picture is indicated in one order；And second obtain subelement, for obtain have
The code stream of the address information obtains the encoding stream.
In embodiments of the present invention, it using in the case where receiving from the first order of control client, sends same
The mark of window is walked to the control client, wherein described first orders the encoding stream for requesting later scene picture, institute
Stating synchronous window is the display window for showing the later scene picture；The coding is obtained according to first order
Stream；The encoding stream is decoded, decoded information is obtained；And the case where receiving from the second order of the control client
Under, the decoded information is sent to the synchronous window, wherein second order shows that the later scene is drawn for requesting
Face, and second order includes the mark of the synchronous window.By that will synchronize in the case where receiving the first order
The identification feedback of window gives control client, and being obtained and being decoded to encoding stream, carries out the preparation of display, subsequent to connect
In the case where receiving the second order, decoded information is retransmited to synchronous window, so that later scene picture is simultaneously in synchronization
It shows, such mode for being monitored picture synchronization switching, first later scene picture progress relevant treatment is carried out aobvious on window
Show preparation, the subsequent mode shown again after the order for being connected to request display, because before later scene picture is shown
It has carried out display to prepare, so will not input because of code stream when the subsequent switching for carrying out current scene picture and later scene picture
Cause later scene picture not show simultaneously with the delay in terms of code stream decoding, has reached and be switched fast monitored picture
Purpose, monitored picture is synchronized into the technical effect of display in synchronous window to realize, and then solve existing skill
In art monitored picture can not synchronism switching the technical issues of.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the system diagram for carrying out video monitoring in the prior art；
Fig. 2 is hardware environment figure applied by the method for synchronously switching of monitored picture according to embodiments of the present invention；
Fig. 3 is the flow chart of the method for synchronously switching of monitored picture according to an embodiment of the present invention；
Fig. 4 is the flow chart of the method for synchronously switching of monitored picture according to the preferred embodiment of the invention；And
Fig. 5 is the schematic diagram of the synchronous switching device of monitored picture according to an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
Firstly, making description below to technical problem involved in the embodiment of the present invention:
DVR:Digital Video Recorder, the entitled digital hard disc video recorder of Chinese, it is that a set of progress image is deposited
The computer system handled is stored up, has and long-time video recording, recording, the long-range function of monitoring and control is carried out to image/voice.
DVS:Digital Video Server, the entitled network video server of Chinese are called digital video code, are
A kind of specialized network transmission device for compressing, handling audio, video data, is mainly to provide video compress or decompression function, completes figure
Acquisition or recovery of image data etc..
NVR:Network Video Recorder, the entitled network hard disk video recorder of Chinese, the most important function of NVR is logical
It crosses network and receives the digital video bit stream of IPC (web camera) equipment transmission, and stored, managed, to realize network
Change bring distributed structure/architecture advantage.
Video wall: video wall is a kind of superlarge screen TV wall as made of multiple TVs (back projection TV) unit spliced
Body is a kind of image, image-text displaying system.Being considered as one can show from computer VGA signal, various video signal
Huge display screen.
Synchronous window: it is required that the display picture window of synchronism switching.
Poll group: the one group of monitoring point managed in client or platform, current monitor point can be cut after a certain interval
Change to next monitoring point, circulation in cycles.
According to embodiments of the present invention, a kind of embodiment of the method for the method for synchronously switching of monitored picture is provided, is needed
Bright, step shown in the flowchart of the accompanying drawings can be held in a computer system such as a set of computer executable instructions
Row, although also, logical order is shown in flow charts, and it in some cases, can be to be different from sequence herein
Execute shown or described step.
The method for synchronously switching of monitored picture provided by the embodiment of the present invention can be applied to hardware loop shown in Figure 2
In border, Fig. 3 is the flow chart of the method for synchronously switching of monitored picture according to an embodiment of the present invention, below in conjunction with Fig. 2 and Fig. 3 couples
The method for synchronously switching of monitored picture provided by the embodiment of the present invention does specific introduction:
As shown in figure 3, the method for synchronously switching of the monitored picture mainly includes the following steps S302 to step S308:
Step S302: in the case where receiving from the first order of control client, the mark of synchronous window is sent
To control client, wherein first orders the encoding stream for requesting later scene picture, and synchronous window is next for showing
The display window of scenic picture, specifically, when needing to be monitored screen switching, control client can send the next field of request
The order of the encoding stream of scape picture is to net control device, and net control device in the case where receiving the order, use by feedback
Control client is given in the mark for the synchronous window that later scene picture is shown, which can be the id information of synchronous window,
As multiple rear-projection units ID having the same of a synchronous window, as shown in Fig. 2, multiple rear-projection lists in synchronous window 1
Member has an identical ID, and multiple rear-projection units in synchronous window 2 have another identical ID.
Step S304: according to first order obtain encoding stream, specifically, mainly by network to video camera, holder,
The encoding stream of the monitoring devices acquired image picture such as DVR or NVR is obtained.
Step S306: decoding encoding stream obtains decoded information, specifically, in embodiments of the present invention, can use any
Kind carries out the mode of code stream decoding to decode encoding stream, obtains decoded information, is ready for subsequent display.
Step S308: in the case where receiving from the second order of control client, decoded information is sent to synchronization
Window, wherein the second order is for requesting display later scene picture, and the second order includes the mark of synchronous window, that is,
After the order for receiving request display later scene picture, it is immediately performed simultaneous display operation, the decoding that decoding is obtained is believed
Breath is sent to synchronous window, so that later scene picture is shown on synchronous window simultaneously.
The method for synchronously switching of monitored picture provided by the embodiment of the present invention, by the case where receiving the first order
Under, it gives the identification feedback of synchronous window to control client, and being obtained and being decoded to encoding stream, carries out the standard of display
It is standby, it is subsequent in the case where receiving the second order, decoded information is retransmited to synchronous window, so that later scene picture
It shows, such mode for being monitored picture synchronization switching, first later scene picture is carried out related on synchronous window simultaneously
Processing is carried out display and is prepared, the subsequent mode shown again after the order for being connected to request display, because aobvious in later scene picture
Display has been ready for before showing to prepare, so when the subsequent switching for carrying out current scene picture and later scene picture, it will not
Because code stream input and code stream decoding in terms of delay due to cause later scene picture not show simultaneously, reached and quickly cut
The purpose of monitored picture is changed, to realize the technical effect that monitored picture is synchronized to display in synchronous window, and then is solved
Determined in the prior art monitored picture can not synchronism switching the technical issues of.
Pass through foregoing description, it can be seen that net control device generally has when realizing large-size screen monitors display function and passes through network
From front end monitoring point, (including video camera, holder, DVR/NVR) takes stream, decoding, upper wall to show three processes.From current display picture
When face is switched to next display picture, needs to stop currently showing the display of picture, then take stream, solution from next monitoring point
Code is shown again.Because the corresponding monitoring point of each display picture is network monitoring point, take stream need network transmission when
Between, and this time is not consistent, causes one group of synchronous window to occur picture when being switched to next scene asynchronous
The problem of display.It takes stream, decoding to require certain time simultaneously, first stops current display picture according to original, then carry out down
One group of display picture takes stream, decoding, the logic for showing process, can not be achieved in very short time (such as 1 second) substantially for one
Group synchronous window is integrally switched to next scene.
And the method for synchronously switching of monitored picture provided by the embodiment of the present invention, current picture is carried out in synchronous window
During normal display, takes the next scene for synchronizing window in advance to take stream, decoding, first carry out the preparation of resource, etc.
To taking turn time interval to, receive request display order when, so that it may accomplish as analog matrix the second grade simulation cut
It changes, such method for synchronously switching, the taking turn switching even for every group of synchronous window needs the (silent of certain time interval
Recognize minimum 5 seconds) situation, it still is able to be switched fast monitored picture, monitored picture is synchronized into display in synchronous window.
Fig. 4 is the flow chart of the method for synchronously switching of monitored picture according to the preferred embodiment of the invention, as shown in figure 4,
In the preferred embodiment, the method for synchronously switching of monitored picture mainly includes the following steps S401 to step S411:
S401: the batch for next scene that control client sends synchronous window to net control device by network takes
Stream order (that is, first order).
S402: after net control device by taking stream to order in batches, synchronous window ID is returned to.
Specifically, step S401 and step S402 are identical as above-mentioned steps S302.
S403: net control device carries out resource bid, that is, during obtaining encoding stream, needs to apply for obtaining
It takes encoding stream and decodes the target resource of encoding stream, then, obtain coding according to the first order using the target resource applied
Stream.
Specifically, application target resource, which specifically includes that, judges whether with idle first passage and second channel,
In, first passage is the channel for obtaining encoding stream, and second channel is the channel for decoding encoding stream；Judging that there is the free time
First passage, and in the case that there is idle second channel, determine idle first passage and idle second channel be
Target resource；And in the case where judging without idle first passage or without idle second channel, release
The channel for maintaining current scene picture to show, obtains target resource.
That is, determining the free time in the case where judging that there is idle first passage and there is idle second channel
First passage and idle second channel are target resource, execute step S404 and step S405 at this time, are judging do not have
In the case where idle first passage or the second channel without the free time, the channel that release maintains current scene picture to show,
Target resource is obtained, executes step S406 to step S409 at this time.
S404: net control device carries out that stream is taken to operate to monitoring point by network, specifically according to the information of the first order
Ground mainly parses the first order, obtains indicating then the address information of the address of later scene picture obtains in the first order
The code stream with address information is taken, encoding stream is obtained.
S405: after net control device gets code stream, start to decode, with above-mentioned steps S306.
S406: stop the display of current window, that is, it is aobvious that the current window of control display current scene picture stops dynamic
Show, in order to guarantee the aesthetics of display, the last frame image of current scene picture can be retained on video wall, releases dimension
Hold the channel resource of other multiframe code streams.
S407: the resource being released out.
S408: net control device carries out that stream is taken to operate to monitoring point by network, specifically according to the information of the first order
Ground mainly parses the first order, obtains indicating then the address information of the address of later scene picture obtains in the first order
The code stream with address information is taken, encoding stream is obtained.
S409: after net control device gets code stream, start to decode, with above-mentioned steps S306 and step S405.
S410: control client sends the batch of the later scene with synchronous window ID by network to net control device
Display command (that is, second order).
S411: after net control device receives batch display command, the simultaneous display of window is synchronized.
Specifically, step S410 and step S411 are identical as above-mentioned steps S308.
The method for synchronously switching of monitored picture provided by the embodiment of the present invention is taking stream resource and is decoding resource abundance
In the case of, the acquisition and decoding of code stream are directly carried out using idling-resource, are being taken stream resource and are being decoded resource without remaining situation
Under, control current window stops Dynamically Announce, and then releases and take stream resource and decode resource to the coding of later scene picture
Stream is handled, and has achieved the effect that guarantee that synchronism switching is gone on smoothly.
The embodiment of the invention also provides a kind of synchronous switching device of monitored picture, which is mainly used for
The method for synchronously switching for executing monitored picture provided by above content of the embodiment of the present invention, send the embodiment of the present invention mention below
The synchronous switching device of the monitored picture of confession does specific introduction.
Fig. 5 is the schematic diagram of the synchronous switching device of monitored picture according to an embodiment of the present invention, as shown in figure 5, the prison
The synchronous switching device of control picture mainly includes that the first Transmit-Receive Unit 10, acquiring unit 20, decoding unit 30 and the second transmitting-receiving are single
Member 40, in which:
First Transmit-Receive Unit 10 is used to send synchronous window in the case where receiving from the first order of control client
Mouthful mark to controlling client, wherein first order the encoding stream for requesting later scene picture, synchronous window for for
Show the display window of later scene picture, specifically, when needing to be monitored screen switching, control client, which can be sent, is asked
Ask the order of the encoding stream of later scene picture to the first Transmit-Receive Unit 10 of net control device, the first Transmit-Receive Unit 10 is connecing
In the case where receiving the order, mark of the feedback for the synchronous window that later scene picture is shown gives control client, the mark
The id information that can be synchronous window is known, as multiple rear-projection units ID having the same of a synchronous window, such as Fig. 2 institute
Show, multiple rear-projection units in synchronous window 1 have an identical ID, and multiple rear-projection units in synchronous window 2 have another
One identical ID.
Acquiring unit 20 is used to obtain encoding stream according to the first order, specifically, mainly by network to video camera, cloud
The encoding stream of the monitoring devices acquired image picture such as platform, DVR or NVR is obtained.
Decoding unit 30 obtains decoded information, specifically, in embodiments of the present invention, can adopt for decoding encoding stream
Encoding stream is decoded with any mode for carrying out code stream decoding, obtains decoded information, is ready for subsequent display.
Second Transmit-Receive Unit 40 is used to send decoding letter in the case where receiving from the second order of control client
It ceases to synchronous window, wherein second orders for requesting display later scene picture, and second orders including synchronous window
Mark, that is, after the order for receiving request display later scene picture, be immediately performed simultaneous display operation, decoding is obtained
Decoded information be sent to synchronous window so that later scene picture simultaneously shown on synchronous window.
The synchronous switching device of monitored picture provided by the embodiment of the present invention, by the case where receiving the first order
Under, it gives the identification feedback of synchronous window to control client, and being obtained and being decoded to encoding stream, carries out the standard of display
It is standby, it is subsequent in the case where receiving the second order, decoded information is retransmited to synchronous window, so that later scene picture
It shows, such mode for being monitored picture synchronization switching, first later scene picture is carried out related on synchronous window simultaneously
Processing is carried out display and is prepared, the subsequent mode shown again after the order for being connected to request display, because aobvious in later scene picture
Display has been ready for before showing to prepare, so when the subsequent switching for carrying out current scene picture and later scene picture, it will not
Because code stream input and code stream decoding in terms of delay due to cause later scene picture not show simultaneously, reached and quickly cut
The purpose of monitored picture is changed, to realize the technical effect that monitored picture is synchronized to display in synchronous window, and then is solved
Determined in the prior art monitored picture can not synchronism switching the technical issues of.
Wherein, acquiring unit 20 mainly includes application subelement and first obtains subelement, and this application subelement is used for Shen
It please target resource, wherein target resource is for obtaining encoding stream and decoding the resource of encoding stream；The first acquisition subelement is used
Encoding stream is obtained in ordering using the target resource applied according to first.
Further, application subelement includes judgment module, determining module and release module, wherein judgment module is used for
Judging whether with idle first passage and second channel, wherein first passage is the channel for obtaining encoding stream, second
Channel is the channel for decoding encoding stream；Determining module is used to judge in judgment module with idle first passage, and has
In the case where idle second channel, determines idle first passage and idle second channel is target resource；Release module
For in the case where judgment module is judged without idle first passage or without idle second channel, release to be tieed up
The channel that current scene picture is shown is held, target resource is obtained.Wherein, the channel that release maintains current scene picture to show, obtains
It is mainly the current window for utilizing the control display current scene picture of control submodule included by release module to target resource
Stop Dynamically Announce, in order to guarantee the aesthetics of display, the last frame figure of current scene picture can be retained on video wall
Picture releases the channel resource for maintaining other multiframe code streams.
In addition, acquiring unit 20 further includes that parsing subunit and second obtain subelement, compiled being obtained according to the first order
During code stream, first by the first order of parsing subunit parsing, the address that later scene picture is indicated in the first order is obtained
Address information；Then subelement is obtained by second and obtain the code stream with address information, obtain encoding stream.
The synchronous switching device of monitored picture provided by the embodiment of the present invention is taking stream resource and is decoding resource abundance
In the case of, the acquisition and decoding of code stream are directly carried out using idling-resource, are being taken stream resource and are being decoded resource without remaining situation
Under, control current window stops Dynamically Announce, and then releases and take stream resource and decode resource to the coding of later scene picture
Stream is handled, and has achieved the effect that guarantee that synchronism switching is gone on smoothly.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of method for synchronously switching of monitored picture characterized by comprising
In the case where receiving from the first order of control client, the mark of synchronous window is sent to the control client
End, wherein described first order the encoding stream for requesting later scene picture, the synchronous window for for show it is described under
The display window of one scenic picture；
The encoding stream is obtained according to first order；
The encoding stream is decoded, decoded information is obtained；And
In the case where receiving from the second order of the control client, the decoded information is sent to the synchronous window
Mouthful, wherein second order shows the later scene picture for requesting, and second order includes the synchronization
The mark of window.
2. the method according to claim 1, wherein including: according to the first order acquisition encoding stream
Apply for target resource, wherein the target resource is for obtaining the encoding stream and decoding the resource of the encoding stream；
And
The encoding stream is obtained according to first order using the target resource applied.
3. according to the method described in claim 2, it is characterized in that, application target resource includes:
Judge whether with idle first passage and second channel, wherein the first passage is for obtaining the coding
The channel of stream, the second channel are the channel for decoding the encoding stream；
Judging to determine idle with the idle first passage and in the case that there is the idle second channel
The first passage and the idle second channel be the target resource；And
In the case where judging without the idle first passage or without the idle second channel, release dimension
The channel that current scene picture is shown is held, the target resource is obtained.
4. according to the method described in claim 3, it is characterized in that, the channel that release maintains current scene picture to show includes:
Control shows that the current window of the current scene picture stops Dynamically Announce.
5. method according to claim 1 to 4, which is characterized in that according to described in the first order acquisition
Encoding stream includes:
First order is parsed, the address information for indicating the address of the later scene picture in first order is obtained；
And
The code stream with the address information is obtained, the encoding stream is obtained.
6. a kind of synchronous switching device of monitored picture characterized by comprising
First Transmit-Receive Unit, for sending synchronous window in the case where receiving from the first order of control client
It identifies to the control client, wherein described first orders the encoding stream for requesting later scene picture, the synchronous window
Mouth is the display window for showing the later scene picture；
Acquiring unit, for obtaining the encoding stream according to first order；
Decoding unit obtains decoded information for decoding the encoding stream；And
Second Transmit-Receive Unit, for sending the solution in the case where receiving from the second order of the control client
Code information is to the synchronous window, wherein and second order is for requesting to show the later scene picture, and described the
Two orders include the mark of the synchronous window.
7. device according to claim 6, which is characterized in that the acquiring unit includes:
Apply for subelement, for applying for target resource, wherein the target resource is for obtaining the encoding stream and decoding institute
State the resource of encoding stream；And
First obtains subelement, for obtaining the coding according to first order using the target resource applied
Stream.
8. device according to claim 7, which is characterized in that the application subelement includes:
Judgment module, for judging whether with idle first passage and second channel, wherein the first passage be for
The channel of the encoding stream is obtained, the second channel is the channel for decoding the encoding stream；
Determining module for judging in the judgment module with the idle first passage, and has the described of free time
In the case where second channel, determines the idle first passage and the idle second channel is the target resource；With
And
Release module, for judging in the judgment module without the idle first passage or without idle institute
In the case where stating second channel, the channel that release maintains current scene picture to show obtains the target resource.
9. device according to claim 8, which is characterized in that the release module includes:
Control submodule shows that the current window of the current scene picture stops Dynamically Announce for controlling.
10. device according to any one of claims 6 to 9, which is characterized in that the acquiring unit includes:
Parsing subunit obtains indicating the later scene picture in first order for parsing first order
The address information of address；And
Second obtains subelement, for obtaining the code stream with the address information, obtains the encoding stream.
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