CN103428444A - Control method for multi-level heterogeneous video switch device - Google Patents
Control method for multi-level heterogeneous video switch device Download PDFInfo
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Abstract
The invention discloses a control method for a multi-level heterogeneous video switch device. The control method includes that a microcontroller switches a video source to a designated video presenting device; a current video switching device linked to the video source is found; the microcontroller judges whether the current video switching device is provided with suitable channels; if the current video switching device is provided with the suitable channels, the microcontroller selects an output channel for the video source and subsequently judges whether an upper-level device of the current video switching device is provided with suitable channels; if the upper-level device of the current video switching device is provided with the suitable channels, the microcontroller selects an output channel for the video source, and the like; and when each level of video switching devices finds available suitable channels, and the microcontroller selects the output channel for the video source, the microcontroller finds links to achieve switching of the video source and displays the video source through the designated video presenting device. According to the control method, project costs are effectively controlled, and meanwhile, maintenance costs and labor costs are minimized; and the control method has an important significance on solving the problem that a monitoring software system has to adapt to the development of a monitoring center and takes the leading position in the field.
Description
Technical field
The present invention relates to field of video monitoring, particularly a kind of control method for the multi-tier Heterogeneous video switching apparatus.
Background technology
Along with the information-based paces of national public safety are accelerated, Surveillance center requires to improve gradually to flexibility, compatibility, the efficiency of supervisory control system.Therefore further promote the extensibility of supervisory control system, promote the video channel service efficiency, imperative.
Surveillance center often accesses various video signal, such as: CVBS(composite video broadcast singal), the VGA(Video Graphics Array), the HDMI(HDMI (High Definition Multimedia Interface)) etc., need various vision signals are outputed to different video representing devices simultaneously, such as: liquid crystal display splicing wall, TV, display, video conferencing system etc.And, along with the increase-volume dilatation of Surveillance center, often occur that video switching apparatus connects the trend such as multipolarity, output uncertainty.
Control method of the prior art all needs to change software systems for each variation, seriously increases maintenance cost and human cost.
Summary of the invention
The invention provides a kind of control method for the multi-tier Heterogeneous video switching apparatus, the present invention has improved the video channel utilization rate, has reduced maintenance cost and human cost, described below:
A kind of control method for the multi-tier Heterogeneous video switching apparatus said method comprising the steps of:
(1) build system environments;
(2) video source, video switching apparatus, video representing device and output equipment are configured;
(3) microcontroller Switch Video source is to the designated display device, search the current video switching device that described video source connects, described microcontroller judges whether described current video switching device has appropriate channel, if, described microcontroller is after described video source is selected output channel, execution step (4), if not, can't switch, flow process finishes;
(4) described microcontroller judges whether the higher level equipment of described current video switching device has appropriate channel, and if so, described microcontroller is that after described video source is selected output channel, execution step (5), if not, can't switch, and flow process finishes;
(5) by that analogy, when every grade of video switching apparatus all searches out available appropriate channel, and described microcontroller is described video source while choosing output channel, and described microcontroller is found link and completed the switching of video source, and shows described video source by described designated display device.
The described system environments of building is specially:
Described video representing device is connected with described video switching apparatus, and described microcontroller is connected with described video switching apparatus, and described microcontroller is disposed whole video switching system.
The described operation that video source, video switching apparatus, video representing device and output equipment are configured is specially:
Each described video source is created to unique sign;
Each described video switching apparatus is created to unique sign, and configure its output channel, the configuration of output channel comprises channel number, channel attached device identification;
Each described video representing device is created to unique sign;
Each output channel all configures the input channel of its higher level equipment connected and higher level equipment.
Described microcontroller in step (3) is that described video source selects the operation of output channel to be specially:
1) whether described microcontroller is that described video source is selected output channel, judge described video source active channel, and if so, described video source is returned to described active channel, execution step (4); If not, perform step 2);
2) described microcontroller has judged whether replaceable passage, and if so, described video source is returned to described replaceable passage, execution step (4); If not, perform step 3);
3) described microcontroller judges whether described current video switching device has vacant passage, and if so, described video source is returned to described vacant passage, execution step (4); If not, described microcontroller can't switch described video source, and flow process finishes.
Described replaceable passage refers to that passage quotes the passage that number of times is 1; Described vacant passage refers to that passage quotes the passage that number of times is 0.
The beneficial effect of technical scheme provided by the invention is: the present invention mainly be take video switching apparatus as main object, by introducing new type of control method, be devoted to improve the video channel utilization rate, compatible a plurality of video representing devices, improve extensibility, reduce the problems such as supervisory control system change of bringing because of equipment changing; The present invention adopts the method for Automatic-searching video channel, stronger with respect to current additive method practicality, flexibility, when effectively controlling project cost, makes system drop to minimum in maintenance cost and human cost.The method realizes simple, to the increase that has effectively solved Surveillance center's equipment, the problems such as change of equipment connection, significant to a difficult problem that solves the development of monitoring software system adaptation Surveillance center, and the level that is in a leading position in this area.
The accompanying drawing explanation
The schematic diagram that Fig. 1 is searching video link provided by the invention;
Fig. 2 is the schematic diagram that video channel provided by the invention is selected;
The topological diagram that Fig. 3 is example;
Fig. 4 is flow chart of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
In order to improve the video channel utilization rate, reduce maintenance cost and human cost, the embodiment of the present invention provides a kind of control method for the multi-tier Heterogeneous video switching apparatus, the method is not in the situation that change the monitoring software system, configure by modification, make monitoring software adapt to the variation of Surveillance center's equipment, and automatically distribute video channel according to video content and video representing device, referring to Fig. 1, Fig. 2 and Fig. 3, the method comprises the following steps:
101: build system environments;
Video representing device (as liquid crystal display splicing wall, television set, monitor etc.) is connected with video switching apparatus (as video matrix, liquid crystal-spliced controller etc.), and microcontroller is connected with video switching apparatus, and microcontroller is disposed whole video switching system.
102: video source, video switching apparatus, video representing device and output equipment are configured;
Clear in order to describe, and without ambiguity, the input and output that embodiment of the present invention agreement input channel, output channel are equipment; Near the video source, being equipment subordinate, is the equipment higher level near the video representing device end.
Wherein, video source need to configure the input channel of higher level equipment and the higher level equipment of its connection; Each output channel of video switching apparatus need to configure connected higher level equipment and input channel, and the operation that video source, video switching apparatus, video representing device and output channel are configured is specially:
1, each video source is created to unique sign, such as: video source is video camera etc.
2, each video switching apparatus is created to unique sign, and configure its output channel, the configuration of output channel comprises channel number, channel attached device identification.Such as: video switching apparatus is video matrix, liquid crystal display screen splicing controller, video conference main frame etc.Output channel is: the input channel 1 of video camera 1 access AV matrix 3-1.
Wherein, video matrix refers to that the method for switching by array exports arbitrarily m road vision signal to electronic installation on the watch-dog of n road, generally the input of matrix be greater than output be m n.In the embodiment of the present invention, the AV matrix of indication, rgb matrix, HD matrix are the video matrix of transmission unlike signal.
Wherein, liquid crystal-spliced controller is to distribute to N display unit after a complete picture signal is divided into to the N piece, and a plurality of display units are formed to a jumbotron dynamic image display screen.
3, each video representing device is created to unique sign, such as: video representing device is television set, display and liquid crystal display screen splicer etc.When video representing device is television set, display, not needing, to those video representing device configuration input channels, does not need the control of microcontroller yet.On the contrary, liquid crystal display screen splicing processor need to be presented on the position of appointment in the input of the control Xia Jiangmou road of microcontroller, needs liquid crystal display screen splicing processor configuration input channel for this reason.
4, each output channel all configures the input channel of its higher level equipment connected and higher level equipment.
Obtain suitable output channel from the video equipment of video source access when video switch, find connected higher level's video equipment and input channel, every grade of video switching apparatus of recurrence searching and passage are until video representing device.Determined so the complete link channel of a video flowing, like this passage successively the Switch Video switching device can be illustrated in video source on video representing device.
103: microcontroller Switch Video source is to the designated display device, search the current video switching device that video source connects, microcontroller judges whether the current video switching device has appropriate channel, if, microcontroller is, after video source is selected output channel, to perform step 104, if not, can't switch, flow process finishes;
When occurring switching, microcontroller can point out subscriber channel to be occupied full by the mode of reporting to the police in actual applications, selects to need the video source of replacing.
Wherein, the microcontroller in this step is that video source selects the operation of output channel to be specially:
1) whether microcontroller is that video source is selected output channel, judge video source active channel, and if so, video source is returned to active channel, performs step 104; If not, perform step 2);
2) microcontroller has judged whether replaceable passage, and if so, video source is returned to replaceable passage, performs step 104; If not, perform step 3);
Wherein, replaceable passage refers to that passage quotes the passage that number of times is 1, for example: when video camera 1 is switched to television set 2-1, if what now television set 2-1 showed is the video of video camera 2, if it is 1 that the passage that video camera 2 takies for AV matrix 3-1 is quoted number of times, this passage is replaceable passage, and the operation of AV matrix 2-1 is also like this.Again for example: video camera 1 is switched to the liquid crystal display screen splicer, if the number of times of quoting that video camera 2 is shared is 1 if the position that the video of video camera 2 is showed is identical with the position of the video camera 1 of expectation, this passage is replaceable passage.So need passage is quoted to time counting number in handoff procedure.
3) microcontroller judges whether the current video switching device has vacant passage, and if so, video source is returned to vacant passage, performs step 104; If not, microcontroller can't the Switch Video source, and flow process finishes.
Wherein, vacant passage refers to that passage quotes the passage that number of times is 0, and for example: if do not need video camera 1 to continue to be illustrated on video representing device, on whole link, the shared passage of video camera 1 is quoted number of times and subtracted 1, if it is that passage is quoted number of times, be labeled as vacant passage at 0 o'clock.
104: microcontroller judges whether the higher level equipment of current video switching device has appropriate channel, and if so, microcontroller is, after video source is selected output channel, to perform step 105, if not, can't switch, and flow process finishes;
For example: when the video camera 1 in Fig. 3 is switched on the large screen splicing processor, the current video switching device that video source connects refers to AV matrix 3-1, the higher level equipment of current video switching device refers to AV matrix 2-1, when there is appropriate channel in current video switching device AV matrix 3-1, also need to judge whether higher level equipment AV matrix 2-1 has appropriate channel, by that analogy, to find successively from top to bottom whether suitable passage is arranged in a word, travel through needed video switching apparatus in complete video path, while only having all video switching apparatus that suitable passage is arranged, just can complete the switching of video source.
Wherein, microcontroller in this step is that video source selects operation and the step 103 of output channel identical, when video switching apparatus has appropriate channel, microcontroller also need to be selected the passage for the video source switching from appropriate channel, only have when having the passage switched for video source, video switching apparatus could be realized switching.Be to need the current video switching device to there being appropriate channel, the higher level equipment of current video switching device and the judgement that follow-up switching device all needs to carry out the video source switching in practical operation.
105: by that analogy, when every grade of video switching apparatus all searches out available appropriate channel, and microcontroller is video source while choosing output channel, and microcontroller is found the switching that link completes video source, and by designated display device display video source.
Below in conjunction with the flow process of the searching video link of Fig. 1, in conjunction with Fig. 2 video channel, select, take Fig. 3 as the equipment connection example, switching video camera 1 is that example illustrates application of the present invention to LCD display wall 1-1.
1, each video source, video switching apparatus, video representing device configure its unique identification, for example: video camera 1, AV matrix 3-1, AV matrix 2-1, liquid crystal display screen splicing controller 1-1, liquid crystal display splicing wall 1-1.
2, each video switching apparatus configures its output channel, for example: the input channel 1 of video camera 1 access AV matrix 3-1; The output channel 1 connecting TV machine 3-1 of AV matrix 3-1, the input channel 1 to 10 of output channel 11 to 20 access AV matrix 2-1; The output channel 1 connecting TV machine 2-1 of AV matrix 2-1, output channel 2 access television set 2-2, output channel 11 is to passage 20 access liquid crystal display screen splicing controller input channels 1 to 10.
3, obtain the higher level equipment AV matrix 3-1 of video camera 1, recurrence is found the higher level equipment of AV matrix 3-1, for example: AV matrix 2-1, liquid crystal display screen splicing controller 1-1.
4, obtain from down to up the passage that video switching apparatus is suitable, for example: AV matrix 3-1, AV matrix 2-1, liquid crystal display screen splicing controller 1-1.If can not obtain appropriate channel, can't complete switching.
5, each associated video switching device completes the passage switching.
Specifically how to obtain appropriate channel, the embodiment of the present invention be take between AV matrix 3-1 and AV matrix 2-1 Acquisition channel and is described as example, described below:
1) obtain the passage 11 to 20 that AV matrix 3-1 is connected with AV matrix 2-1.
2) in inquiry passage 11 to 20 whether video camera 1 using, if having the passage that uses is judged to be suitable passage, exit process.
3), if the same position of the LCD display wall 1-1 that video camera 1 will be showed is now being showed video camera x, inquire about in passage 11 to 20 whether video camera x is arranged is 1 using and quoting number of times, if having judge that this passage, as appropriate channel, exits process.
4) available free passage whether in inquiry passage 11 to 20, if having this passage is appropriate channel, exit process.
5) there is no appropriate channel, exit process.
Through said process, inquire passage 15 between passage 13, AV matrix 2-1 and the liquid crystal display screen splicing controller 1-1 between AV matrix 3-1 and AV matrix 2-1 and, for appropriate channel, complete handoff procedure, process is as follows:
1) input channel 1 of AV matrix 3-1 is switched to output channel 13, and obtain the input channel 1 of the AV matrix 2-1 be connected with output channel 13.
2) output channel 13 of AV matrix 3-1 is labeled as by shooting 1 and uses, taken by video camera 1 if number of references is 1(passage 13, number of references adds 1).
3) input channel of AV matrix 2-1 is switched to output channel 15, and obtain the input channel 1 of the liquid crystal display screen splicing controller 1-1 be connected with output channel 15.
4) output channel 15 of AV matrix 2-1 is labeled as by video camera 1 and uses, taken by video camera 1 if number of references is 1(passage 15, number of references adds 1).
5) input channel 1 of liquid crystal display screen splicing controller 1-1 is switched to the position of appointment.
The embodiment of the present invention does not limit the model of above-mentioned device, as long as can realize that the device of function of the present invention all can.
In sum, this method has solved the automatic assignment problem of monitoring software system to the multistage communication channel of the many video representing devices of isomery video matrix, can adapt to the variation of watch-dog simultaneously, has very high autgmentability, can not affect the use of existing device.In addition, this method does not rely on specific hardware, and good portability is arranged.
This it will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, and the invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. the control method for the multi-tier Heterogeneous video switching apparatus, is characterized in that, said method comprising the steps of:
(1) build system environments;
(2) video source, video switching apparatus, video representing device and output equipment are configured;
(3) microcontroller Switch Video source is to the designated display device, search the current video switching device that described video source connects, described microcontroller judges whether described current video switching device has appropriate channel, if, described microcontroller is after described video source is selected output channel, execution step (4), if not, can't switch, flow process finishes;
(4) described microcontroller judges whether the higher level equipment of described current video switching device has appropriate channel, and if so, described microcontroller is that after described video source is selected output channel, execution step (5), if not, can't switch, and flow process finishes;
(5) by that analogy, when every grade of video switching apparatus all searches out available appropriate channel, and described microcontroller is described video source while choosing output channel, and described microcontroller is found link and completed the switching of video source, and shows described video source by described designated display device.
2. a kind of control method for the multi-tier Heterogeneous video switching apparatus according to claim 1, is characterized in that, the described system environments of building is specially:
Described video representing device is connected with described video switching apparatus, and described microcontroller is connected with described video switching apparatus, and described microcontroller is disposed whole video switching system.
3. a kind of control method for the multi-tier Heterogeneous video switching apparatus according to claim 1, is characterized in that, the described operation that video source, video switching apparatus, video representing device and output equipment are configured is specially:
Each described video source is created to unique sign;
Each described video switching apparatus is created to unique sign, and configure its output channel, the configuration of output channel comprises channel number, channel attached device identification;
Each described video representing device is created to unique sign;
Each output channel all configures the input channel of its higher level equipment connected and higher level equipment.
4. a kind of control method for the multi-tier Heterogeneous video switching apparatus according to claim 1, is characterized in that, the described microcontroller in step (3) is that described video source selects the operation of output channel to be specially:
1) whether described microcontroller is that described video source is selected output channel, judge described video source active channel, and if so, described video source is returned to described active channel, execution step (4); If not, perform step 2);
2) described microcontroller has judged whether replaceable passage, and if so, described video source is returned to described replaceable passage, execution step (4); If not, perform step 3);
3) described microcontroller judges whether described current video switching device has vacant passage, and if so, described video source is returned to described vacant passage, execution step (4); If not, described microcontroller can't switch described video source, and flow process finishes.
5. a kind of control method for the multi-tier Heterogeneous video switching apparatus according to claim 4, is characterized in that, described replaceable passage refers to that passage quotes the passage that number of times is 1; Described vacant passage refers to that passage quotes the passage that number of times is 0.
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