CN101873487B - Decoding method, decoder and system based on audio/video monitoring system - Google Patents
Decoding method, decoder and system based on audio/video monitoring system Download PDFInfo
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Abstract
The invention discloses a decoding method, a decoder and a system based on an audio/video monitoring system, which are used for carrying out polling decoding on the data stream of a plurality of monitoring channels by adopting a decoding channel. The method comprises the following steps: determining the current monitoring channel corresponding to the decoding channel and decoding the current monitoring channel; and after completing decoding of the current monitoring channel, decoding the next monitoring channel according to the preset decoding sequence of the monitoring channels. The invention can effectively utilize a few of decoders to realize decoding monitoring of a plurality of monitoring points, improve the cost performance of the network audio/video decoders and simultaneously lower the cost of decoding on the wall in the monitoring system.
Description
Technical field
The present invention relates to the audio-video monitoring technical field, relate in particular to a kind of coding/decoding method, decoder and system based on audio/video monitor and control system.
Background technology
Current audio-video monitoring technology has developed into the based on network digital audio/video monitoring epoch, the based on network effective establishment of the various often watch-dogs of the audio/video monitor and control system of structure, and a typical audio/video monitor and control system sees also Fig. 1.This system is made up of IMAQ center (front end), image stores processor center (middle-end) and Surveillance center (rear end), and wherein, the IMAQ center is that the equipment such as video camera by the top constitute, and is used for the collection site image; The image stores processor is centered close to mid portion, have to image/voice record a video for a long time, the function of recording, telemonitoring and control; Surveillance center carries out comprehensive control and management to the video image of front end, and the management of warning is wherein arranged, the management of video image storage, and the management of video image live preview.Comprise that an important function is a decoding on-wall in the preview management, so-called decoding on-wall refers to, and with the image behind the decoder decode, the physics of process decoder shows that mouth is shown on the video wall.
In supervisory control system, the control point of front end is many, also promptly, has many monitor channels, few tens up to a hundred, several more than thousand ten thousand at most, specifically looks and uses and decide.To carry out decoding on-wall to so many monitor channels, if adopt man-to-man method, even so for the audio/video decoder of multichannel; Its quantity also can be many; And the price of decoder is relatively expensive, thus; In a supervisory control system, the required cost of decoding on-wall will be bigger.
Summary of the invention
In view of this, the present invention provides a kind of coding/decoding method based on audio/video monitor and control system, decoder and system, to realize utilizing a spot of decoder to realize the decoding on-wall to a plurality of control points.
For this reason, the embodiment of the invention adopts following technical scheme:
A kind of coding/decoding method based on audio/video monitor and control system is used to adopt a decoding channels that the data flow of at least two monitor channels is carried out the poll decoding, may further comprise the steps:
At least two monitor channels of configuration on a decoding channels, said monitor channel and encoder have corresponding relation;
The decoding order of said decoding channels to each monitor channel is set in advance, for each monitor channel is set the corresponding preview time;
Confirm the pairing current monitoring channel of said decoding channels, the decoding timer is set according to the decoding preview time, decoding channels is set current monitoring channel is decoded for current monitoring channel configuration;
After the decoding of accomplishing current monitoring channel,, next monitor channel is decoded according to the decoding order of preset monitoring passage.
When arbitrary situation below the appearance, confirm to accomplish the decoding of current monitoring channel: the decoding preview time of the current monitoring channel that presets arrives; The interruption that is connected of said decoding channels and current monitoring channel; Network connects unusual.
The source of the data flow of said monitor channel is DVR, DVS, lPS or streaming media server.
A kind of decoder based on audio/video monitor and control system; Said decoder comprises one or more decoding channels; Said decoding channels is used for the data flow of at least two monitor channels is carried out the poll decoding; Said decoder also comprises: dispensing unit, be used at least two monitor channels of configuration on a decoding channels, and said monitor channel and encoder have corresponding relation; Preset unit is used to preset the decoding order of decoding channels to each monitor channel, for each monitor channel is set the corresponding preview time; Confirm the unit, be used for confirming whether said decoding channels is accomplished the decode procedure of current monitoring channel; Switch unit when being used for confirming that in said definite unit the decoding of current monitoring channel has been accomplished, according to the decoding order that presets, switching to next monitor channel with said decoding channels and decodes.
The decoding of current monitoring channel is confirmed to accomplish in said definite unit when one of following situation: the decoding preview time of the current monitoring channel that presets arrives; The interruption that is connected of said decoding channels and current monitoring channel; Network connects unusual.
Said decoder also comprises the timer that poll switches, and is used for the decoding preview time is carried out timing.
A kind of audio/video monitor and control system; Comprise encoder, the corresponding one or more monitor channels of said encoder, said decoder comprises one or more decoding channels; Each decoding channels is used for the data flow of at least two monitor channels is carried out the poll decoding; Said decoder also comprises: dispensing unit, be used at least two monitor channels of configuration on a decoding channels, and said monitor channel and encoder have corresponding relation; Preset unit is used to preset the decoding order of decoding channels to each monitor channel, for each monitor channel is set the corresponding preview time; Confirm the unit, be used for confirming whether said decoding channels is accomplished the decode procedure of current monitoring channel; Switch unit when being used for confirming that in said definite unit the decoding of current monitoring channel has been accomplished, according to the decoding order that presets, switching to next monitor channel with said decoding channels and decodes.
The decoding of current monitoring channel is confirmed to accomplish in said definite unit when one of following situation: the decoding preview time of the current monitoring channel that presets arrives; The interruption that is connected of said decoder and current monitoring channel; Network connects unusual.
Said decoder also comprises the timer that poll switches, and is used for the decoding preview time is carried out timing.
Said encoder is DVR, DVS, lPS or streaming media server.
The invention has the advantages that decoding channels a plurality of monitor channels of can poll decoding.Suppose that a network audio-video multi-channel decoder has 8 decoding channels; Calculate according to 64 monitor channels of every road decoding channels maximum configured; Decoder 8*64=512 road monitor channel of can decoding in contrast to man-to-man mode, has had more the decoding of 512-8=504 road monitor channel.This shows that the present invention has improved the monitor channel number of the decoding of decoder greatly, well improved the cost performance of decoder, and can satisfy in most of supervisory control system demand for decoding on-wall.
Description of drawings
Fig. 1 is a prior art audio/video monitor and control system sketch map;
Fig. 2 is a poll coding/decoding method flow chart of the present invention;
Fig. 3 is embodiment of the invention poll decoding sketch map;
Fig. 4 is an embodiment of the invention poll coding/decoding method flow chart;
Fig. 5 is an embodiment of the invention poll decoder architecture sketch map.
Embodiment
For audio/video decoder; If only adopting man-to-man mode decodes to the control point of front end; Can cause the demand of decoder in a supervisory control system to increase greatly; And because the price comparison of decoder is expensive, in a supervisory control system, the cost of decoding on-wall is just bigger so.For this reason, the present invention provides a kind of coding/decoding method of realizing the poll decoding, and limited decoder capable of using is decoded to the multi-path monitoring passage.
Referring to Fig. 2, be poll coding/decoding method flow chart of the present invention, comprising:
S201: confirm the pairing current monitoring channel of said decoding channels, and current monitoring channel is decoded;
S202: after the decoding of accomplishing current monitoring channel,, next monitor channel is decoded according to the decoding order of preset monitoring passage.
Wherein, when following any situation, can think the decoding of having accomplished current monitoring channel:
The decoding preview time of the current monitoring channel that (1) presets arrives;
(2) interruption that is connected of decoding channels and current monitoring channel;
(3) network connects unusual.
Thus, the present invention can effectively utilize a small amount of decoder to realize the decoding monitoring to a plurality of control points, has improved the cost performance of network audio-video decoder, has reduced the expense of decoding on-wall in the supervisory control system simultaneously.
Introduce a specific embodiment of the present invention below.
Referring to Fig. 3, be embodiment of the invention poll decoding sketch map.
Circular frame the inside is the set of encoding device among Fig. 3; It has represented the source part of coded data; DVR (Digital Video Recorder is specifically arranged; Digital hard disc video recorder), DVS (Digital Video Sever, digital video code), lPC (lP Camera, web camera), streaming media server etc.The coding pass on these encoding devices abstract be one by one monitor channel, for decoder, these are exactly its object that need decode.
On decoder, take out the decoding channels of fair amount,, can adopt such strategy: the monitor channel of configuration multichannel on a decoding channels in order to realize many-to-one decoding process according to its decoding capability; And set the preview time of each monitor channel; Like this, carry out live preview and when the preview time arrives, just stop the decoding of this monitor channel when a monitor channel; Switch to the preview of decoding of next monitor channel; And arrive preview at next monitor channel and carries out identical action during the time, by that analogy, the circulation preview of decoding.Like this, on a decoding channels, just can realize decoding preview to the multi-path monitoring passage.
Referring to Fig. 4,, comprising for the embodiment of the invention realizes the flow chart that poll is decoded:
S401: judge whether to get stream; If get into S402; If, not waiting for 1 second continued detects.
S402: the initial work that is configured parameter.
S403: upgrade circulation decoding link information, be mainly and find the current monitor channel node that needs decoding.
S404: the decoding of carrying out the current monitoring channel node connects; If successful connection gets into S405; If failure then returns to S401;
S405: the decoding preview time according to configuration is provided with the decoding timer.
S406: decoding channels is set begins decoding.
S407: judge whether to arrive the decoding preview time; If get into S411; If, do not get into S408;
S408: judge whether to close decoding and connect; If get into S411; If, do not get into S409;
S409: judge whether network connects normal; If get into S410; If, do not get into S411;
S410: proceed the decoding action, get back to S407 then.
S411: break off current network and connect, decoding channels is set stops decoding, return to S401 then.
Except said method; The present invention also provides a kind of decoder based on audio/video monitor and control system, and this decoder comprises one or more decoding channels 501, and said decoding channels is used for the data flow of at least two monitor channels is carried out the poll decoding; Referring to Fig. 5, decoder also comprises:
Preset unit 502 is used to preset the decoding order of decoding channels 501 to each monitor channel;
Confirm unit 503, be used for confirming whether the decode procedure of 501 pairs of current monitoring channel of decoding channels is accomplished;
Switch unit 504 is used for when confirming that unit 503 confirms that the decoding of current monitoring channel has been accomplished, and the decoding order according to preset unit 502 presets switches to next monitor channel with decoding channels 501 and decodes.
Wherein, Confirm that unit 503 confirms that when one of following situation decoding channels 501 accomplishes the decoding of current monitoring channel: the interruption that is connected of the decoding preview time arrival of the current monitoring channel that presets, decoding channels and current monitoring channel; Perhaps, network connects unusual.
Preferably, said decoder also comprises the timer that poll switches, and is used for the decoding preview time is carried out timing.
In addition, the present invention also provides a kind of audio/video monitor and control system, and this system comprises encoder; The corresponding one or more monitor channels of encoder, encoder comprises DVR, DVS, lPS and streaming media server etc., especially; Decoder in this system comprises one or more decoding channels; Each decoding channels is used for the data flow of at least two monitor channels is carried out the poll decoding, and referring to Fig. 5, decoder also comprises:
Preset unit 502 is used to preset the decoding order of decoding channels 501 to each monitor channel;
Confirm unit 503, be used for confirming whether the decode procedure of 501 pairs of current monitoring channel of decoding channels is accomplished;
Switch unit 504 is used for when confirming that unit 503 confirms that the decoding of current monitoring channel has been accomplished, and the decoding order according to preset unit 502 presets switches to next monitor channel with decoding channels 501 and decodes.
Wherein, Confirm that unit 503 confirms that when one of following situation decoding channels 501 accomplishes the decoding of current monitoring channel: the interruption that is connected of the decoding preview time arrival of the current monitoring channel that presets, decoding channels and current monitoring channel; Perhaps, network connects unusual.
Preferably, said decoder also comprises the timer that poll switches, and is used for the decoding preview time is carried out timing.
It is thus clear that, the present invention proposes a kind of one-to-many decoding scheme, promptly utilize a decoding channels to realize the poll decoding according to the time interval monitor channel of each configuration of poll successively.
The invention has the advantages that decoding channels a plurality of monitor channels of can poll decoding.Suppose that a network audio-video multi-channel decoder has 8 decoding channels; Calculate according to 64 monitor channels of every road decoding channels maximum configured; Decoder 8*64=512 road monitor channel of can decoding in contrast to man-to-man mode, has had more the decoding of 512-8=504 road monitor channel.This shows that the present invention has improved the monitor channel number of the decoding of decoder greatly, well improved the cost performance of decoder, and can satisfy in most of supervisory control system demand for decoding on-wall.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. the coding/decoding method based on audio/video monitor and control system is characterized in that, is used to adopt a decoding channels that the data flow of at least two monitor channels is carried out the poll decoding, may further comprise the steps:
At least two monitor channels of configuration on a decoding channels, said monitor channel and encoder have corresponding relation;
The decoding order of said decoding channels to each monitor channel is set in advance, for each monitor channel is set the corresponding preview time;
Confirm the pairing current monitoring channel of said decoding channels, the decoding timer is set according to the decoding preview time, decoding channels is set current monitoring channel is decoded for current monitoring channel configuration;
After the decoding of accomplishing current monitoring channel,, next monitor channel is decoded according to the decoding order of preset monitoring passage.
2. according to the said method of claim 1, it is characterized in that, when arbitrary situation below the appearance, confirm to accomplish the decoding of current monitoring channel:
The decoding preview time of the current monitoring channel that presets arrives;
The interruption that is connected of said decoding channels and current monitoring channel;
Network connects unusual.
3. according to claim 1 or 2 said methods, it is characterized in that the source of the data flow of said monitor channel is DVR, DVS, lPS or streaming media server.
4. the decoder based on audio/video monitor and control system is characterized in that, said decoder comprises one or more decoding channels, and said decoding channels is used for the data flow of at least two monitor channels is carried out the poll decoding, and said decoder also comprises:
Dispensing unit is used at least two monitor channels of configuration on a decoding channels, and said monitor channel and encoder have corresponding relation;
Preset unit is used to preset the decoding order of decoding channels to each monitor channel, for each monitor channel is set the corresponding preview time;
Confirm the unit, be used for confirming whether said decoding channels is accomplished the decode procedure of current monitoring channel;
Switch unit when being used for confirming that in said definite unit the decoding of current monitoring channel has been accomplished, according to the decoding order that presets, switching to next monitor channel with said decoding channels and decodes.
5. according to the said decoder of claim 4, it is characterized in that the decoding of current monitoring channel is confirmed to accomplish in said definite unit when one of following situation:
The decoding preview time of the current monitoring channel that presets arrives;
The interruption that is connected of said decoding channels and current monitoring channel;
Network connects unusual.
6. according to the said decoder of claim 5, it is characterized in that said decoder also comprises the timer that poll switches, be used for the decoding preview time is carried out timing.
7. audio/video monitor and control system; Comprise encoder; The corresponding one or more monitor channels of said encoder is characterized in that said decoder comprises one or more decoding channels; Each decoding channels is used for the data flow of at least two monitor channels is carried out the poll decoding, and said decoder also comprises:
Dispensing unit is used at least two monitor channels of configuration on a decoding channels, and said monitor channel and encoder have corresponding relation;
Preset unit is used to preset the decoding order of decoding channels to each monitor channel, for each monitor channel is set the corresponding preview time;
Confirm the unit, be used for confirming whether said decoding channels is accomplished the decode procedure of current monitoring channel;
Switch unit when being used for confirming that in said definite unit the decoding of current monitoring channel has been accomplished, according to the decoding order that presets, switching to next monitor channel with said decoding channels and decodes.
8. according to the said system of claim 7, it is characterized in that the decoding of current monitoring channel is confirmed to accomplish in said definite unit when one of following situation:
The decoding preview time of the current monitoring channel that presets arrives;
The interruption that is connected of said decoder and current monitoring channel;
Network connects unusual.
9. according to the said system of claim 7, it is characterized in that said decoder also comprises the timer that poll switches, be used for the decoding preview time is carried out timing.
10. according to claim 7,8 or 9 said systems, it is characterized in that said encoder is DVR, DVS, lPS or streaming media server.
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| CN103780870B (en) * | 2012-10-17 | 2017-11-21 | 杭州海康威视数字技术股份有限公司 | Video image quality diagnostic system and its method |
| CN103841368B (en) * | 2012-11-22 | 2017-12-12 | 中国电信股份有限公司 | Video switching method and system, central server, video channel management equipment |
| CN103037200B (en) * | 2012-12-05 | 2016-04-06 | 江苏清投视讯科技有限公司 | A kind of distributed network video processor based on ARM framework |
| CN103024360A (en) * | 2012-12-28 | 2013-04-03 | 河南辉煌科技股份有限公司 | Method for simulating input video monitoring system of multi-channel video coder |
| CN108400977A (en) * | 2018-02-07 | 2018-08-14 | 苏州科达科技股份有限公司 | Video data transfers method and device |
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