CN101707710A - General decoding video matrix - Google Patents
General decoding video matrix Download PDFInfo
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- CN101707710A CN101707710A CN 200910110443 CN200910110443A CN101707710A CN 101707710 A CN101707710 A CN 101707710A CN 200910110443 CN200910110443 CN 200910110443 CN 200910110443 A CN200910110443 A CN 200910110443A CN 101707710 A CN101707710 A CN 101707710A
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Abstract
The invention provides a general decoding video matrix, which is connected with a PCI video matrix card by a PCI slot, a digital compressed video by an Ethernet port, and a control terminal by an RS 232 port. The general decoding video matrix comprises a matrix switch control module connected to the PCI slot for switching and outputting a video signal, a video calling request processing module connected to the RS232 port for processing a calling request command sent by the control terminal to realize the connection and calling of a remote digital video channel, and a general decoding module connected to the Ethernet port for decoding the digital compressed video into YUV digital images, finding out a manufacturer whom a code stream belongs to from a code stream characteristic library according to the characteristics of the digital compressed video and finding out a corresponding soft decoder from a decoder library according to the manufacturer to decode and output the code stream of the compressed video, wherein the matrix switch control module, the video calling request processing module and the general decoding module are connected mutually.
Description
Technical field
The present invention relates to a kind of general decoding video matrix, relate in particular to a kind of digital video matrix of supporting the output of various video compressed encoding formats.
Background technology
Along with the digitlization of video monitoring, the arrival of network times, increasing simulation monitoring system is replaced by digital network monitoring and control system, and the quantity of control point is more and more and more and more closeer simultaneously.This is not only required in front monitoring front-end on-premise network video server, and requires at large-scale video monitoring center or command centre's on-premise network video matrix, goes up the purpose of monitor, video wall to satisfy the network video image decoding.
Traditional analog matrix is because analog signal is adopted in video transmission, so each road vision signal needs one road coaxial cable to insert.Control signal corresponding also needs independent control line to transmit.This certainly will cause aspect transmission cable the serious waste to resource, and also can be very complicated and loaded down with trivial details when actual field is constructed.Because analog matrix just adopts the mode of putting up a bridge to realize the switching of vision signal simply, it is impossible therefore will carrying out unified network management to vision signal.In today that digitlization, networking are popularized day by day, the traditional analog matrix seems awkward all the more in function supports such as the transmission of digital video signal, decoding, switching, control
Along with the development of Network Video Surveillance technology, the digital video Matrix Technology is arisen at the historic moment.The digital video matrix passes through the video source of network receiving front-end, utilizes the picture decoding card to realize the D/A of network video signal is changed, and realizes showing on any switching, the control to multichannel front end vision signal, the wall of coming on TV by a cover matrix software again.
The digital video matrix is only supported the MPEG4 of consolidation form or coded format H.264 in the market, video encoder for special producer carries out code conversion with regard to needing to add other equipment, increased the cost that engineering is disposed undoubtedly, and system complexity.Thereby research and develop a kind of can compatible market on the digital video matrix of multiple front end encoding device be necessary.
Summary of the invention
In view of this, technical problem to be solved by this invention provides the digital video matrix of the multiple in the market front end video encoder of support, can reduce cost and the complexity in the engineering deployment.
The objective of the invention is to be achieved through the following technical solutions:
A kind of general decoding video matrix by PCI slot and PCI video matrix card connection, is connected with the digital compression video by Ethernet interface, is connected with control terminal by the RS232 mouth, and this general decoding video matrix comprises interconnective:
Matrix switching controls module is connected in described PCI slot, is used for the switching and the output of vision signal;
Video call request processing module is connected in described RS232 mouth, is used for the call request order that the processing controls terminal sends, and realization digital remote video channel connects and calls; And,
The general decoding module, be connected in described Ethernet interface Ethernet interface, be used for the digital compression video decode is become the YUV digital picture, from the code stream feature database, find out manufacturer under the code stream according to the feature of digital compression video, and from the decoder storehouse, find out corresponding soft decoder according to manufacturer, with compressed video bit stream decoding output.
Compared with prior art the invention has the advantages that, support the digital video matrix of multiple in the market front end video encoder, reduced cost and complexity during engineering is disposed.
Description of drawings
Fig. 1 is the system configuration schematic diagram of a kind of embodiment of decoding video matrix of the present invention;
Fig. 2 is the structural representation of a kind of embodiment of decoding video matrix of the present invention;
Fig. 3 be a kind of embodiment of decoding video matrix of the present invention the workflow diagram of matrix switching controls module;
Fig. 4 is the workflow diagram of the video call request processing module of a kind of embodiment of decoding video matrix of the present invention;
Fig. 5 is the workflow diagram of the general decoding module of a kind of embodiment of decoding video matrix of the present invention;
Fig. 6 is the workflow diagram of the matrix switching controls module of a kind of embodiment of decoding video matrix of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and preferred embodiment.
As shown in Figure 1, general decoding video matrix is linked to be a system, the fore-end of system is to obtain the on-the-spot digital compression video of monitoring by DVR or network video coder (DVR DVS), be connected with the front end video encoder by Ethernet, then decoding digital video is exported as analog video, wait for that at last control terminal sends switching command by RS232/485, when general decoding video matrix is received the switching command that is transmitted by serial ports, thereby the decoded digital video signal output of correspondence is outputed on the monitor that is attached thereto by the analog output mouth.
Wherein, general decoding video matrix is the core of system, and based on network whole system is a highly integrated system of systems, and it comprises video camera control, cradle head control, audio frequency and video coding and decoding and collection, video playback.That this system belongs to is soft, the two-layer structure system of combination of hardware.Ground floor is a hardware view, and mainly by camera, the video encoder of periphery, video matrix card (being responsible for simulation output) is formed.The second layer is a software view, comprises the communication between soft, the hardware, the control and the network transmission module of video matrix.
According to system's characteristics, can be the hardware capability part with system divides, comprising: video encoding module and matrix switching controls module; With the software function part, comprising: video call request processing module, generic video decoder module, matrix switching controls module.Wherein video encoding module is responsible for video acquisition and compression function, and the realization of this module has the front end video encoder to finish.Matrix switching controls module is responsible for the switching and the output of vision signal, and the realization of this module is by finishing under the video matrix card control.Video call request processing module is used for the call request order that the processing controls terminal sends, and realizes that the digital remote video channel connects and calls.Wherein, the generic video decoder module is core particularly, and main the realization is reduced into the YUV digital video signal with code stream, thereby can exports by the video matrix card the decoding of the digital compression video flowing of each producer.Matrix switching controls module is responsible for switching, the output function that the control of video matrix card realizes video channel.
In conjunction with Fig. 1, as shown in Figure 2, a kind of general decoding video matrix, by PCI slot and PCI video matrix card connection, be connected with the digital compression video by Ethernet interface, be connected with control terminal by the RS232 mouth, this general decoding video matrix comprises interconnective: matrix switching controls module, be connected in described PCI slot, be used for the switching and the output of vision signal; Video call request processing module is connected in described RS232 mouth, is used for the call request order that the processing controls terminal sends, and realization digital remote video channel connects and calls; And, the general decoding module, be connected in described Ethernet interface Ethernet interface, be used for the digital compression video decode is become the YUV digital picture, from the code stream feature database, find out manufacturer under the code stream according to the feature of digital compression video, and from the decoder storehouse, find out corresponding soft decoder according to manufacturer, with compressed video bit stream decoding output.
Wherein, video encoding module is to finish video coding, be the digitlization of analog video, this functions of modules mainly comprise look, the real-time collection and the compression of AV, in native system, be meant the video encoder of various producers, there is Haikang DVR/DVS in the producer of the video encoder of supporting at present, big magnificent DVR/DVS, permanent easily DVR/DVS, the DVR/DVS of light section, inferior DVR/DVS difficult to understand, DVR/DVS energetically.
Matrix switching controls module mainly is responsible for the switching of video channel and to the combination in any of output video.By software control, the switching through matrix switching controls module then according to the program command requirement, outputs on the terminal presentation facility that links to each other with the video matrix card, i.e. tv screen wall.Fig. 3 is the workflow of matrix switching controls module.
As can be seen from the figure, general decoding video matrix from reception order realize to switch output must be through four steps:
1. application software is sent program command according to operating personnel's demand to general decoding video matrix.Program is called the relative program of video matrix card in driving by application layer protocol, sends control command to the MPU chip, and communicates session with it.Application layer software mainly is control terminal here, is by the computer com interface with communicating by letter between the matrix, utilizes the RS232 Serial Port Line to realize.
2.MPU after chip receives the control command that software sends, judge the operation that will carry out, then command request is converted to machine code and come gating matrix control circuit (switching circuit), will carry out corresponding switching through channel video signal.
3. switching circuit is pure physical circuit, the open and close of the signal of telecommunication control circuit that is sent by MPU, functions such as passage conversion.
4. final step links to each other the output circuit of each commutation circuit and links to each other with a monitor of video wall by circuit with the video-out port of matrix card, and the vision signal of switching is outputed on the fixing equipment.To inserting reconfiguring of multi-channel video passage, can realize that the video of any passage calls by this process very easily.
Wherein, video call request processing module is used for the processing array switching command, realizes that according to the resource of instruction request the digital remote video channel connects and calls.This module is not only wanted the relevant information of receiving front-end encoder and is sent the order of video call request to it, and will stick into the corresponding initialization of row to the video matrix that is arranged in client host and work is set.The software flow pattern of this module such as Fig. 4, whether this module is intercepted serial ports has request to arrive, if request is arranged, connects front end video capture device (DVR/DVS) according to request, and request corresponding digital compressing video frequency flow is when compressing video frequency flow arrives
The general decoding module is that various digital compression video decodes are become the YUV digital picture, this module is that this video matrix is different from existing digital video matrix part, principal character is that general decoding can be with the compressed video stream decoding output of multiple different manufacturers, this general decoding module flow process as shown in Figure 5, at first from the code stream feature database, find out manufacturer under the code stream according to the feature of digital compression video, from the decoder storehouse, finding out corresponding soft decoder according to manufacturer then, compressed video bit stream decoding output the most at last, wherein code stream feature database and decoder storehouse are the second development interface that each manufacturer provides to be encapsulated according to unified interface obtain.
Matrix switching controls module is responsible for switching, the output function that the control of video matrix card realizes video channel.Know from the front, can enter by the yuv data that decodes through the data of network requests and wait for output in the host buffer, so the matrix switching controls then can control yuv data and entered in the matrix card by pci bus, switch output then.The software flow pattern of this module as shown in Figure 6.
Embodiment 1, control general decoding video matrix by software terminal:
1. the information of the front end encoding device that the general decoding video matrix main frame will be connected is logged in the ACCESS database in the main frame＜camerainfo.mdb 〉, it is IP address of equipment that each encoder is wanted the typing field, the network terminal slogan, equipment login name user name, land password, device channels number, and each corresponding overall same Taoist monastic name of passage institute.
2. open general decoding video matrix service end software, network terminal slogan serial ports parameter accordingly is set.
3. control terminal is utilized RS232 to be connected with general decoding video matrix, open control terminal software, the corresponding serial ports parameter configuration files setup.ini deploy content of configuration is as follows before opening software:
[Setup]
The string slogan
Port＝1
The o odd, e even parity check, n no parity check
Baud rate, check, data bit, position of rest
Settings＝9600，n，8，1
4. utilize simulation MAX matrix keyboard to send out the matrix control protocol to general decoding video matrix, camera number serve is the overall channel number that the ACCSEE data are disposed, and monitors that plane No. is the corresponding output channel of matrix card
Embodiment 2, control general decoding video matrix by the MAX keyboard of standard:
1. the information of the front end encoding device that the general decoding video matrix main frame will be connected is logged in the ACCESS database in the main frame＜camerainfo.mdb 〉, it is IP address of equipment that each encoder is wanted the typing field, the network terminal slogan, equipment login name user name, land password, device channels number, and each corresponding overall same Taoist monastic name of passage institute.
2. open general decoding video matrix service end software, network terminal slogan serial ports parameter accordingly is set;
3. utilize RS232 to be connected with general decoding video matrix MAX matrix supervisory keyboard, configuring the serial ports parameter of RS232 and general decoding according to the MAX keyboard note, to put to the proof the serial ports configuration of service end software consistent;
4. utilize the MAX matrix keyboard to send out the matrix control protocol to general decoding video matrix, camera number serve is the overall channel number that the ACCSEE data are disposed, and monitors that plane No. is the corresponding output channel of matrix card.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (1)
1. general decoding video matrix, it is characterized in that,, be connected with the digital compression video by Ethernet interface by PCI slot and PCI video matrix card connection, be connected with control terminal by the RS232 mouth, this general decoding video matrix comprises interconnective:
Matrix switching controls module is connected in described PCI slot, is used for the switching and the output of vision signal;
Video call request processing module is connected in described RS232 mouth, is used for the call request order that the processing controls terminal sends, and realization digital remote video channel connects and calls; And,
The general decoding module, be connected in described Ethernet interface Ethernet interface, be used for the digital compression video decode is become the YUV digital picture, from the code stream feature database, find out manufacturer under the code stream according to the feature of digital compression video, and from the decoder storehouse, find out corresponding soft decoder according to manufacturer, with compressed video bit stream decoding output.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872604A (en) * | 2010-05-07 | 2010-10-27 | 杭州海康威视系统技术有限公司 | System and method for monitoring television wall |
| CN102231824A (en) * | 2011-08-04 | 2011-11-02 | 深圳市超视科技有限公司 | Video monitoring random coded format digital matrix system and implementation method thereof |
| CN102595054A (en) * | 2012-02-20 | 2012-07-18 | 深圳市深艾普科技有限公司 | Video switching method and video switching device for matrix |
| CN103533314A (en) * | 2013-11-04 | 2014-01-22 | 富盛科技股份有限公司 | Method for accessing standardized interface and unified architecture of differentiation security and protection equipment |
| CN104683810A (en) * | 2015-02-28 | 2015-06-03 | 武汉烽火众智数字技术有限责任公司 | Dynamic decoding method and device based on characteristic analysis |
| CN104767943A (en) * | 2015-04-17 | 2015-07-08 | 武汉兴图新科电子股份有限公司 | One-key large-screen display system and method |
| CN105611387A (en) * | 2015-12-25 | 2016-05-25 | 北京小鸟科技发展有限责任公司 | Method and system for previewing video image |
| CN105681685A (en) * | 2014-11-17 | 2016-06-15 | 孤山电子科技（上海）有限公司 | Signal processor and system and implementation method of picture in picture and multi-screen display |
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2009
- 2009-10-30 CN CN 200910110443 patent/CN101707710A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872604A (en) * | 2010-05-07 | 2010-10-27 | 杭州海康威视系统技术有限公司 | System and method for monitoring television wall |
| CN102231824A (en) * | 2011-08-04 | 2011-11-02 | 深圳市超视科技有限公司 | Video monitoring random coded format digital matrix system and implementation method thereof |
| CN102595054A (en) * | 2012-02-20 | 2012-07-18 | 深圳市深艾普科技有限公司 | Video switching method and video switching device for matrix |
| CN103533314A (en) * | 2013-11-04 | 2014-01-22 | 富盛科技股份有限公司 | Method for accessing standardized interface and unified architecture of differentiation security and protection equipment |
| CN103533314B (en) * | 2013-11-04 | 2016-08-17 | 富盛科技股份有限公司 | One realizes differentiation security device standard interface and unified shader cut-in method |
| CN105681685A (en) * | 2014-11-17 | 2016-06-15 | 孤山电子科技（上海）有限公司 | Signal processor and system and implementation method of picture in picture and multi-screen display |
| CN104683810A (en) * | 2015-02-28 | 2015-06-03 | 武汉烽火众智数字技术有限责任公司 | Dynamic decoding method and device based on characteristic analysis |
| CN104683810B (en) * | 2015-02-28 | 2019-09-06 | 武汉烽火众智数字技术有限责任公司 | A kind of dynamic decoder method and apparatus based on signature analysis |
| CN104767943A (en) * | 2015-04-17 | 2015-07-08 | 武汉兴图新科电子股份有限公司 | One-key large-screen display system and method |
| CN105611387A (en) * | 2015-12-25 | 2016-05-25 | 北京小鸟科技发展有限责任公司 | Method and system for previewing video image |
| CN105611387B (en) * | 2015-12-25 | 2019-07-19 | 北京小鸟科技股份有限公司 | Video image method for previewing and system |
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