CN103260011A - System and method for achieving monitoring of more paths by utilization of net-harddisk video recorder - Google Patents
System and method for achieving monitoring of more paths by utilization of net-harddisk video recorder Download PDFInfo
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Abstract
The invention relates to a system for achieving monitoring of more paths by utilization of a net-harddisk video recorder. The system comprises the net-harddisk video recorder, a plurality of internet protocol cameras, a memorizer and a displayer, wherein the internet protocol cameras are supportive of a dual-stream coding technique, a local data network TCP/IP protocol is connected with the net-harddisk video recorder to form a video transmission channel, and the video transmission channel is used for acquiring audio video data and transmitting the audio video data to the net-harddisk video recorder. The net-harddisk video recorder is used for conducting decoding on the audio video data acquired by the internet protocol cameras and outputting the audio video data to a video window on the displayer to be displayed, and meanwhile the audio video data are stored in the memorizer for storage. The memorizer is connected with the net-harddisk video recorder and stores the acquired audio video data, and the displayer is connected with the net-harddisk video recorder and used for video display. The system for achieving the monitoring of more paths by utilization of the net-harddisk video recorder has the advantages that real-time monitoring of more paths, playback of more paths and storage of more paths under same decoding performance are achieved, and the cost proportion of rear-end devices in a whole video monitoring engineering project is largely reduced.
Description
Technical field
What the present invention relates to is that a kind of network hard disk video recorder of audio/video decoding and memory technology that utilizes is realized more surveillance and the method for monitoring of multichannel number, belongs to the security protection field of video monitoring.
Background technology
1, the universalness trend of network high definition is more and more obvious in the last few years, and rear end storage and display unit are limited by the decoding performance of main control chip, seriously falls behind the demand for development in the high Qinghua of network;
2, adopt based on the industrial computer of X86 framework as the scheme cost of rear end storage and display unit than higher, stability also is that This is what people generally disapprove of always;
3, for common display unit (screen size is within 42 cun), under the multiwindow (greater than 16 windows), no matter the image resolution ratio in the single video window is SD resolution (720*576) or the effect difference of high definition resolution (1920*1080) can be very not big;
4, many engineering projects use network hard disk video recorders mainly are for storage, and are not high to the video display requirement;
5, network hard disk video recorder (Net Video Recorder, be called for short NVR), the topmost function of NVR is to receive the IPC(web camera by network) digital video bit stream of device transmission, and store, manage, thereby realize the distributed structure/architecture advantage that networking brings;
6, video channel: the another name that refers to certain web camera of inserting on the network hard disk video recorder;
7, video window: the viewing area that refers to the video data decoding output of video channel;
Summary of the invention
The present invention will overcome above-mentioned the deficiencies in the prior art, and a kind of cost performance height is provided, and can make network hard disk video recorder realize that the storage of multichannel number more, the network hard disk video recorder that utilizes that shows realize more surveillance and the method for monitoring of multichannel number.
The technical solution used in the present invention is: a kind of network hard disk video recorder that utilizes is realized the more surveillance of multichannel number, and it includes network hard disk video recorder, a plurality of web camera, memory and display;
Described a plurality of web camera is supported the dual code stream coding techniques, is connected to form the video transmission channel by local area network (LAN) ICP/IP protocol and network hard disk video recorder, is used for obtaining audio, video data and this transfer of data is arrived network hard disk video recorder;
Described network hard disk video recorder is used for the audio, video data that a plurality of web cameras the get access to video window that outputs on the display of decoding is shown, these data is stored in the memory preserves simultaneously;
Described memory and network hard disk video recorder are also preserved the audio, video data that obtains;
Described display is connected with network hard disk video recorder, is used for video and shows.
Storage when described network shooting function realizes big code stream and primary bit stream; The maximum 720*576 that supports of primary bit stream resolution; The maximum 1920*1080 that supports of big code stream resolution.
Described video window can close arbitrarily and open, and also can realize the output exchange of video window by driving style.
Described video transmission channel quantity is greater than or equal to video window quantity.
Described a plurality of web camera shows the audio, video data that obtains by the video transmission channel in each video window taking turn, and each video window support spacer and order setting.
A kind ofly realize the method for video monitor according to the aforesaid surveillance of utilizing network hard disk video recorder to realize multichannel number more, this method comprises the steps::
A) audio/video information that web camera is obtained is transferred to network hard disk video recorder by local area network (LAN);
B) network hard disk video recorder obtains the video data with the storage size code stream;
C) judge whether video window is opened, if go to step d)
D) judge whether it is single window: if single window, the big code stream video data of video window decoding network video camera realizes that the image of high definition shows, the decoding and the output that suspend other video windows simultaneously show; If multiwindow, the decoding and the demonstration that recover or open other each visible video window, the primary bit stream video data of the web camera that each visible video window decoding is corresponding is saved decode resources.
E) judge whether video window quantity changes; If change, then operate according to step d).
A kind ofly realize the method for multichannel playing back videos according to the aforesaid surveillance of utilizing network hard disk video recorder to realize multichannel number more, this method comprises the steps:
A) inquiry is stored in the video information in the memory and has judged whether that file exists, if having, forwards step b) to;
B) play video file;
C) judge whether it is single window: if single window, the big code stream video data of video window decoding network video camera realizes that the image of high definition shows, the decoding and the output that suspend other video windows simultaneously show; If multiwindow, the decoding and the demonstration that recover or open other each visible video window, the primary bit stream video data of the web camera that each visible video window decoding is corresponding is saved decode resources.
D) judge whether video window quantity changes; If change, then operate according to step c).
The invention has the beneficial effects as follows: compared with prior art, the video data of web camera can be realized simultaneously big primary bit stream storage and demonstration.Under same decoding performance, realized the more real time monitoring of multichannel number, the more playback of multichannel number, the more storage of multichannel number greatly reduces the cost ratio of back-end device in whole video supervision control engineering project.
Description of drawings
Fig. 1 is the structured flowchart of surveillance of the present invention.
Fig. 2 is the workflow diagram of method for monitoring of the present invention.
Fig. 3 is the workflow diagram of multichannel playing back videos of the present invention.
Embodiment
The present invention will be described in detail below in conjunction with accompanying drawing: as shown in Figure 1, a kind of network hard disk video recorder is realized the more surveillance of multichannel number, support a plurality of web cameras of dual code stream coding techniques that audio, video data is communicated by local area network (LAN) ICP/IP protocol and network hard disk video recorder, network hard disk video recorder shows the audio, video data that the gets access to video window that outputs on the display of decoding, these data is stored in the memory preserves simultaneously.A network hard disk video recorder can insert a plurality of web cameras simultaneously, and each web camera has a unique IP address.
Storage when described network shooting function realizes big code stream and primary bit stream; The maximum 720*576 that supports of primary bit stream resolution; The maximum 1920*1080 that supports of big code stream resolution; If the video resolution that inserts exceeds maximum capacity, then video window can show that an error identification is used for prompting.Only need support the video channel of 720P to insert at many projects gets final product, respectively with the video flow size of 1080P and 720P, come evaluation process device storage capacity and network throughput, thereby draw the maximum video transmission channel number of supporting under 1080P and the 720P respectively, the user can be switched by menu in system, has further facilitated various projects and has used.
The way that the multipotency of network hard disk video recorder inserts depends primarily on memory property and the network processes performance limitations of processor, but not the decoding performance restriction.Be based on Huawei sea equally and think the network hard disk video recorder of the HI3531 chip solution exploitation of up-to-date release, the highest decoding performance is 4 road 1080P that decode simultaneously, can only realize that according to traditional method for designing 4 1080P web cameras insert, and can realize that by method of the present invention the web camera of 16 1080P or 24 720P inserts simultaneously.
The present invention is when the multichannel real time monitoring, and each video window connects the primary bit stream saving decode resources of map network video camera under the multiwindow; Video window connects the image decoding demonstration of the big code stream realization high definition of web camera under single window, suspends decoding and the demonstration of other video windows simultaneously, thereby has realized under limited decoding capability, realizes the more access of multi video channel.
Storage when the present invention can support same video channel primary bit stream and big code stream, during playing back videos, each video window uses the primary bit stream data decode that is stored in the hard disk under the multiwindow, and output shows, saves decode resources.Video window uses the big bit stream data decoding that is stored in the hard disk under single window, realizes that the image of high definition shows, suspends decoding and the demonstration of other video windows simultaneously, thereby has realized under limited decoding capability, more the requirement of multichannel number playback simultaneously.
The present invention can select arbitrarily video channel opening or closing in the video window arbitrarily.
The video channel quantity of the present invention's management can be greater than or equal to video window quantity, namely Cun Chu video channel can be greater than the current video window quantity that can show, for the engineering project of using network hard disk video recorder to be mainly used in storing, this design has reduced the usage quantity of network hard disk video recorder, has reduced the carrying cost of rear end.
When video window quantity was less than video channel, in order to watch all video channels, each video window also supported taking turn to show, and can arrange at interval and in proper order taking turn.
A kind ofly realize the method for video monitor according to the aforesaid surveillance of utilizing network hard disk video recorder to realize multichannel number more, this method comprises the steps:
A) audio/video information that web camera is obtained is transferred to network hard disk video recorder by local area network (LAN);
B) network hard disk video recorder obtains the video data with the storage size code stream;
C) judge whether video window is opened, if go to step d)
D) judge whether it is single window: if single window, the big code stream video data of video window decoding network video camera realizes that the image of high definition shows, the decoding and the output that suspend other video windows simultaneously show; If multiwindow, the decoding and the demonstration that recover or open other each visible video window, the primary bit stream video data of the web camera that each visible video window decoding is corresponding is saved decode resources.
E) judge whether video window quantity changes; If change, then operate according to step d).
A kind of network hard disk video recorder that utilizes according to claim 1 is realized the more method of the surveillance realization multichannel playing back videos of multichannel number, and this method comprises the steps:
A) inquiry is stored in the video information in the memory and has judged whether that file exists, if having, forwards step b) to;
B) play video file;
C) judge whether it is single window: if single window, the big code stream video data of video window decoding network video camera realizes that the image of high definition shows, the decoding and the output that suspend other video windows simultaneously show; If multiwindow, the decoding and the demonstration that recover or open other each visible video window, the primary bit stream video data of the web camera that each visible video window decoding is corresponding is saved decode resources.
D) judge whether video window quantity changes; If change, then operate according to step c).
As shown in Figure 2, specifically, after the startup of network hard disk video recorder system is finished, in step 101, dispose the web camera relevant information that connects for each video channel, comprise IP address, port numbers, login username, password etc., configure the back network hard disk video recorder map network video camera that can be dynamically connected certainly.If connection failure in the step 102 checks whether link information is correct, returns step 101.
After entering step 103, each video channel of network hard disk video recorder is obtained the video data of the big primary bit stream of web camera simultaneously, and the video data of big primary bit stream is all stored, and sees step 104.
Judge in step 105 whether video channel has at video window and open, if have, and then judge that the current video window is single window or multiwindow, see step 106, if single window, step 107 can be suspended decoding and the demonstration of other video windows, and and then big code stream video data and the output of the corresponding video channel of decoding current video window show in step 108.If multiwindow, decoding and demonstration that step 109 can be recovered or open other visible video windows, and then primary bit stream video data and the output of the corresponding video channel of decoding current video window show in step 110.
If the demonstration to video window is switched, see step 111, return step 106.
As shown in Figure 3, specifically, step 201 is seen in the playback interfaces that at first the enters network hard disk video recorder inquiry of recording a video.If inquiry is less than video information in the step 202, check whether querying condition is correct, returns step 201.
Enter step 203, play the video file of each video channel simultaneously.
Judge that in step 204 the current video window is single window or multiwindow, if single window, step 205 can be suspended decoding and the demonstration of other video windows, and and then big code stream video recording data and the output of the corresponding video channel of decoding current video window shows in step 206.If multiwindow, decoding and demonstration that step 207 can be recovered or open other visible video windows, and then primary bit stream video recording data and the output of the corresponding video channel of decoding current video window show in step 208.
If the demonstration to video window is switched, see step 209, just return step 204.
Claims (7)
1. one kind is utilized network hard disk video recorder to realize the more surveillance of multichannel number, it include network hard disk video recorder, a plurality of web camera, memory and display,, it is characterized in that:
Described a plurality of web camera is supported the dual code stream coding techniques, is connected to form the video transmission channel by local area network (LAN) ICP/IP protocol and network hard disk video recorder, is used for obtaining audio, video data and this transfer of data is arrived network hard disk video recorder;
Described network hard disk video recorder is used for the audio, video data that a plurality of web cameras the get access to video window that outputs on the display of decoding is shown, these data is stored in the memory preserves simultaneously;
Described memory is connected with network hard disk video recorder and the audio, video data that obtains is preserved;
Described display is connected with network hard disk video recorder, is used for video and shows.
2. the network hard disk video recorder that utilizes according to claim 1 is realized the more surveillance of multichannel number, it is characterized in that storing when described network shooting function realizes big code stream and primary bit stream; The maximum 720*576 that supports of primary bit stream resolution; The maximum 1920*1080 that supports of big code stream resolution.
3. the network hard disk video recorder that utilizes according to claim 1 is realized the more surveillance of multichannel number, it is characterized in that described video window can close arbitrarily and open, and also can realize that the output of video window exchanges by driving style.
4. the network hard disk video recorder that utilizes according to claim 1 is realized the more surveillance of multichannel number, it is characterized in that described video transmission channel quantity is greater than or equal to video window quantity.
5. the network hard disk video recorder that utilizes according to claim 1 is realized the more surveillance of multichannel number, it is characterized in that: described a plurality of web cameras show the audio, video data that obtains by the video transmission channel in each video window taking turn, and each video window support spacer and order setting.
6. realize the method for video monitor it is characterized in that this method comprises the steps: according to each described surveillance of utilizing network hard disk video recorder to realize multichannel number more among the claim 1-5 for one kind
A) audio/video information that web camera is obtained is transferred to network hard disk video recorder by local area network (LAN);
B) network hard disk video recorder obtains the video data with the storage size code stream;
C) judge whether video window is opened, if go to step d)
D) judge whether it is single window: if single window, the big code stream video data of video window decoding network video camera realizes that the image of high definition shows, the decoding and the output that suspend other video windows simultaneously show; If multiwindow, the decoding and the demonstration that recover or open other each visible video window, the primary bit stream video data of the web camera that each visible video window decoding is corresponding is saved decode resources.
E) judge whether video window quantity changes; If change, then operate according to step d).
7. realize the method for multichannel playing back videos it is characterized in that this method comprises the steps: according to each described surveillance of utilizing network hard disk video recorder to realize multichannel number more among the claim 1-5 for one kind
A) inquiry is stored in the video information in the memory and has judged whether that file exists, if having, forwards step b) to;
B) play video file;
C) judge whether it is single window: if single window, the big code stream video data of video window decoding network video camera realizes that the image of high definition shows, the decoding and the output that suspend other video windows simultaneously show; If multiwindow, the decoding and the demonstration that recover or open other each visible video window, the primary bit stream video data of the web camera that each visible video window decoding is corresponding is saved decode resources.
D) judge whether video window quantity changes; If change, then operate according to step c).
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| CN112911226A (en) * | 2021-01-19 | 2021-06-04 | 浙江大华技术股份有限公司 | Method, system and storage medium for automatically adding network camera |
| CN112911226B (en) * | 2021-01-19 | 2023-04-25 | 浙江大华技术股份有限公司 | Method, system and storage medium for automatically adding network camera |
| CN114189730A (en) * | 2021-11-04 | 2022-03-15 | 北京淳中科技股份有限公司 | Video recording method, video playback method and device |
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Application publication date: 20130821 |
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| RJ01 | Rejection of invention patent application after publication |