CN103139546B - Multi-channel video switch method for vehicle-mounted display - Google Patents
Multi-channel video switch method for vehicle-mounted display Download PDFInfo
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- CN103139546B CN103139546B CN201310045107.3A CN201310045107A CN103139546B CN 103139546 B CN103139546 B CN 103139546B CN 201310045107 A CN201310045107 A CN 201310045107A CN 103139546 B CN103139546 B CN 103139546B
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Abstract
The invention relates to the field of vehicle-mounted display, in particular to a switch method of multi-channel video. The switch method of the multi-channel video comprises the following steps: building more than one video data channel, verifying coding flows in the new video data channels to generate new coding flows and protocol heads of the new coding flows, carrying out synchronous serialization processing on the new video data flows, inserting the new generated coding flows in the new video data channels and renewing data of the video data channels; building channels to cover video data, inserting the new generated coding flows, renewing information of the channels which cover the video data, closing covered video data channels and generating display video data flows. One new video data flow is inserted to cover one channel video data flow in a state of four-channel video, and the new video data flow which is inserted is carried out on synchronous serialization processing to enable the new video data flow which is inserted to be synchronous with the present video data flows, then the covered video data channels are closed to finish switch. The whole process is concise and fast and can observe more than four-channel video, and the video surveillance effect can be further improved.
Description
Technical field
The present invention relates to car-mounted display field is and in particular to a kind of switch method of multi-channel video for car-mounted display.
Background technology
In in-vehicle display system, link up often through 3G network is interactive between car-mounted terminal and Surveillance center, can be by
In vehicle, present case is real-time transmitted to control centre by 3G network.Due to the restriction of 3G network bandwidth, only up to be simultaneously
Transmit four road videos, and be only capable of simultaneously the picture captured by four photographic head it is impossible to check the 5th road video, but actually very
In the case of many, the picture captured by four photographic head can not accomplish no dead angle monitoring, and then leads to video monitoring effect poor.
Content of the invention
The technical problem to be solved is to provide a kind of switch method of multi-channel video for car-mounted display to solve
The problem of the video monitoring effect difference that certainly can only check the picture captured by four photographic head in prior art simultaneously and lead to.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of multi-channel video switching side for car-mounted display
Method, comprises the following steps,
Step one, terminal sets up the above video data channel in a road by 3G network and service end, by a described road with
Upper video data channel receive simultaneously in the above video data channel in a described road video data stream, Bing Jiang mono- more than tunnel regards
Frequency data channel information enters row cache；
Step 2, currently sets up video data channel way by described video data channel information acquisition, if described regard
Frequency is less than four according to passage way, then jump to step 3, if video data channel way is more than or equal to four, jumps to step
Four；
Step 3, sets up a road new video data channel, and check code stream again in new video data channel, generates
Newly organized code stream and the protocol header of newly organized code stream, and described new video data flow is synchronized with serializing process, newly regard described
Insert newly-generated encoding stream in frequency data channel, update new video data channel information, generate playing video data stream；
Step 4, receives video handover information, and described video handover information comprises, by Switch Video data channel information, to read
Take Switch Video data channel as capped video data channel, again verify in described capped video data channel
Encoding stream, generates the protocol header of newly organized code stream and newly organized code stream, and described new video data flow is synchronized with serializing process,
Set up and cover video data channel, and insert newly-generated encoding stream in described covering video data channel, update and cover video
Data channel information, and close capped video data channel, generate playing video data stream；
Step 5, plays the video data stream that step 3 or step 4 generate.
The invention has the beneficial effects as follows：By using the inventive method, want to watch the 5th tunnel under four road video states
During video, four tunnel video data stream Zhong mono- tunnel video data stream can be covered by inserting a road new video data flow, and to slotting
The new video data flow entering synchronizes serializing and processes, and is allowed to synchronous with existing video data stream, is then shut off capped
Video data channel completes to switch, and whole process is succinct, rapid, can check the above video in four roads, and then improves video monitoring effect
Really.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described synchronizing sequence is processed for inserting the corresponding picture of new video data flow and existing video counts
Show according to stream picture synchronization, the verification being additionally operable to new video data channel information or covering video data channel information.
Further, the protocol header generating newly organized code stream in described step 4 is used for making the video counts in new video data channel
Update corresponding with the renewal of existing video data stream according to stream.
Further, in described step 4, video handover information is sent by cpu according to switching demand.
Beneficial effect using above-mentioned further scheme is：By new video data flow is synchronized serializing process with
And new video data flow is recompiled can improve switch speed and video display effect further, thus improve video further
Monitoring effect.
Brief description
Fig. 1 is the inventive method flow chart.
Specific embodiment
Below in conjunction with accompanying drawing, the principle of the present invention and feature are described, example is served only for explaining the present invention, and
Non- for limiting the scope of the present invention.
As shown in figure 1, being the inventive method flow chart, comprise the following steps,
Step 101, terminal sets up the above video data channel in a road by 3G network and service end, by a described road with
Upper video data channel receive simultaneously in the above video data channel in a described road video data stream, Bing Jiang mono- more than tunnel regards
Frequency data channel information enters row cache；
Step 102, currently sets up video data channel way by described video data channel information acquisition,
Step 103, if described video data channel way is less than four, jumps to step 104, if video data channel road
Number is more than or equal to four, then jump to step 105；
Step 104, sets up a road new video data channel, and check code stream again in new video data channel, raw
Become newly organized code stream and the protocol header of newly organized code stream, and described new video data flow synchronized with serializing to process, described new
Insert newly-generated encoding stream in video data channel, update new video data channel information, generate playing video data stream；
Step 105, receives video handover information, described video handover information comprises Switch Video data channel information,
Read Switch Video data channel as capped video data channel, school again in described capped video data channel
Test encoding stream, generate the protocol header of newly organized code stream and newly organized code stream, and described new video data flow is synchronized at serializing
Reason, sets up and covers video data channel, and inserts newly-generated encoding stream in described covering video data channel, updates covering and regards
Frequency data channel information, and close capped video data channel, generate playing video data stream；
Step 106, plays the video data stream that step 104 or step 105 generate.
It is that simultaneous display newly inserts the corresponding picture of video data stream and existing video data that described synchronizing sequenceization is processed
New insertion video data in stream picture, and verification covering video data channel；The association of newly organized code stream is generated in described step 4
View head is that the corresponding video data stream covering in video data channel updates and existing video data stream updates；In described step 4
Switch Video data channel is the above video data channel in a road or a road.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (2)
1. a kind of switch method of multi-channel video for car-mounted display, is characterized in that：Comprise the following steps,
Step one, terminal sets up the above video data channel in a road by 3G network and service end, regards by more than a described road
Frequency data channel receive simultaneously in the above video data channel in a described road video data stream, the above video counts in Bing Jiang mono- road
Enter row cache according to channel information；
Step 2, currently sets up video data channel way by described video data channel information acquisition, if described video counts
It is less than four according to passage way, then jumps to step 3, if video data channel way is more than or equal to four, jump to step 4；
Step 3, sets up a road new video data channel, and check code stream again in new video data channel, generates newly organized
Code stream and the protocol header of newly organized code stream, and described new video data flow is synchronized with serializing process, in described new video number
According to inserting newly-generated encoding stream in passage, update new video data channel information, generate playing video data stream；
Step 4, receives video handover information, and described video handover information comprises Switch Video data channel information, and reading will
Switch Video data channel as capped video data channel, check code again in described capped video data channel
Stream, generates the protocol header of newly organized code stream and newly organized code stream, and described new video data flow is synchronized with serializing process, sets up
Cover video data channel, and insert newly-generated encoding stream in described covering video data channel, update and cover video data
Channel information, and close capped video data channel, generate playing video data stream；
Step 5, plays the video data stream that step 3 or step 4 generate；
It is that simultaneous display newly inserts the corresponding picture of video data stream and existing video data stream picture that described synchronizing sequenceization is processed
New insertion video data in face, and verification covering video data channel；
The protocol header generating newly organized code stream in described step 4 is that the corresponding video data stream covering in video data channel updates
Update with existing video data stream.
2. a kind of switch method of multi-channel video for car-mounted display according to claim 1, is characterized in that：Described step 4
Middle is the above video data channel in a road or a road by Switch Video data channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310045107.3A CN103139546B (en) | 2013-02-04 | 2013-02-04 | Multi-channel video switch method for vehicle-mounted display |
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| CN201310045107.3A CN103139546B (en) | 2013-02-04 | 2013-02-04 | Multi-channel video switch method for vehicle-mounted display |
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| CN103686071B (en) * | 2013-10-30 | 2017-01-11 | 北京中星微电子有限公司 | Monitoring video playback method and system |
| CN106843056B (en) * | 2017-02-28 | 2018-12-18 | 大连理工大学 | A kind of switching method in metro operation central vehicle monitoring remote video channel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527825A (en) * | 2009-04-14 | 2009-09-09 | 郭松 | Monitoring system |
| CN102857732A (en) * | 2012-05-25 | 2013-01-02 | 华为技术有限公司 | Picture control method, device and system for multi-picture video conferences |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040022202A1 (en) * | 2002-08-05 | 2004-02-05 | Chih-Lung Yang | Method and apparatus for continuously receiving images from a plurality of video channels and for alternately continuously transmitting to each of a plurality of participants in a video conference individual images containing information concerning each of said video channels |
| JP4881568B2 (en) * | 2005-03-17 | 2012-02-22 | 株式会社日立国際電気 | Surveillance camera system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527825A (en) * | 2009-04-14 | 2009-09-09 | 郭松 | Monitoring system |
| CN102857732A (en) * | 2012-05-25 | 2013-01-02 | 华为技术有限公司 | Picture control method, device and system for multi-picture video conferences |
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