CN102761710A - Audio/video intelligent switcher - Google Patents
Audio/video intelligent switcher Download PDFInfo
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- CN102761710A CN102761710A CN2011101107553A CN201110110755A CN102761710A CN 102761710 A CN102761710 A CN 102761710A CN 2011101107553 A CN2011101107553 A CN 2011101107553A CN 201110110755 A CN201110110755 A CN 201110110755A CN 102761710 A CN102761710 A CN 102761710A
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Abstract
The invention discloses an audio/video intelligent switcher which mainly comprises two paths of audio/video input signal interfaces and two paths of audio/video output signal interfaces, wherein each path of audio/video input signal interface is independently corresponding to the two paths of audio/video output signal interfaces; if an input signal is normal is judged by detecting a signal level value inputted by one audio/video output signal interface; if the input signal is normal, the audio/video input signal is simultaneously switched to a first path of audio/video output signal interface and a second path of audio/video output signal interface and is simultaneously outputted; if the input signal is abnormal, the signal level value inputted by the other path of the audio/video output signal interface is detected; and if the signal level value is normal, the audio/video input signal is simultaneously switched to the first path of audio/video output signal interface and the second path of audio/video output signal interface and is simultaneously outputted. The audio/video intelligent switcher has a function of bypassing the signal after power failure. A main signal is directly outputted to an output interface after power failure.
Description
Technical field
The present invention relates to a kind of video terminal technical field, especially a kind of audio-video intelligent switch.
Background technology
If its audio-video signal of equipment faults such as video terminal of main meeting-place can interrupt in the video conference; The whole video meeting can't be proceeded; Two video terminals of configuration switch to stand-by equipment by operating personnel's manual mode as cold standby during The traditional solution when main equipment takes place to interrupt.In triggering handoff procedure, the operational motion complicacy needs apparatus operating a lot (like matrix switching, sound console switching, central controller switching etc.), brings following shortcoming and defect thus:
1, on-the-spot feedback is untimely.Whether trigger during device fails and carry out the master/slave device switching and need operating personnel to judge, operating personnel, operating personnel are untimely to the feedback of field condition to judgement and the reflection that triggers if needing the time long;
2, triggering signal is indeterminate.Whether audio-video signal goes wrong needs operating personnel's naked eyes and ear to observe judgement, and the signal criterion is energy not, triggers the not science of making a strategic decision;
3, operating process is loaded down with trivial details, triggers each item index inaccuracy of switching the back audio frequency and video.After confirming to carry out handover operation; Need carry out video source switching and audio mixing operation to video matrix, sound console and central controller installation provision step; Relate to that the equipment multipaths is loaded down with trivial details very easily occur to omit, and the accuracy of switching can not guarantee, handoff error often occur;
4, technology realizes that difficulty is big, requires height, pressure big to operating personnel, and poor effect;
5, serious to the influence of meeting process.The personnel participating in the meeting of main meeting-place and sub-venue can obviously feel the disruption in the meeting handoff procedure, can influence the normal procedure of meeting.
6, equipment is many, and cost is high.Realize that triggering needs the equipment of configuration more, great in constructing amount, technical difficulty is bigger.
Summary of the invention
The purpose of this invention is to provide a kind of audio-video intelligent switch that utilizes and realize the method that automaticallyes switch; Overcome above deficiency; When master terminal broke down in the meeting-place, the video terminal signal that the meeting-place shows can realize that the two-shipper automatic seamless switches, and does not influence the viewing effect in meeting-place; It is uninterrupted that the sound of sub-venue is listened in the main meeting-place, uninterrupted to the sound of sub-venue broadcasting.
In order to reach above-mentioned purpose of design, the technical scheme that the present invention adopts is following:
A kind of audio-video intelligent switch comprises the audio frequency auxiliary input, is used to connect audiogenic devices such as sound console, for said audio-video intelligent switch provides audio signal; Master terminal audio frequency auxiliary input is used to connect master terminal auxiliary audio frequency input interface, is that main video terminal provides audio signal; Power interface is used to connect power supply, for said audio-video intelligent switch provides the power supply support; Standby terminal audio frequency auxiliary input is used to connect standby terminal auxiliary audio frequency input interface, for the alternate video terminal provides audio signal; The control mouth is used for said audio-video intelligent switch parameter configuration; Said audio-video intelligent switch also comprises two-way audio frequency and video input signal interface and two-way audio frequency and video output signaling interface; The independent corresponding two-way audio frequency and video output signaling interface of each road audio frequency and video input signal interface; Through audio frequency and video being exported the detection of the signal level value of signaling interface input; Judge whether input signal is normal, export synchronously as normally then this audio frequency and video input signal being switched to first via audio frequency and video output signaling interface and the second tunnel audio frequency and video output signaling interface simultaneously; Undesired like input signal; Then another road audio frequency and video are exported the detection of the signal level value of signaling interface input; As normally, then the audio-video signal of this input is switched to first via audio frequency and video output signaling interface and the second tunnel audio frequency and video output signaling interface simultaneously and export synchronously.
The beneficial effect of audio-video intelligent switch of the present invention and automatic switching method is: trigger and switch fast.The time that video image switches is short; The triggering signal standard is clear and definite.But signal criterion energy reaches respective standard and can carry out trigger action, triggers decision science; Automatically trigger, change action is accurate.Realize automatic switchover, reduced manual intervention as far as possible; Trigger the accurate nothing of each item index of switching the back audio frequency and video and depart from, handoff procedure level and smooth personnel participating in the meeting experience; Manual triggers is switched optional; Realized that but manual triggers is switched on the basis of automaticallying switch, guaranteed the control fully of operating personnel's meeting; The meeting process is not exerted an influence; The personnel participating in the meeting of main meeting-place and sub-venue can obviously not feel the disruption in the meeting handoff procedure, and meeting can normally be carried out according to the order of sequence; Single device can realize, small investment; Realize triggering switching only needing single equipment to realize, equipment connects simple, and customer investment is few; Audio-video signal switches synchronously; Trigger when switching, vision signal and audio signal can be switched synchronously.During this device fails, can realize the signal bypass functionality, main signal is directly outputed to output interface.
Description of drawings
Fig. 1 is the sketch map of audio-video intelligent switch of the present invention;
Fig. 2 is the use sketch map of the described audio-video intelligent switch of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing optimum implementation of the present invention is done further detailed description.
As shown in Figure 1, the described audio-video intelligent switch of the embodiment of the invention comprises audio frequency auxiliary input 1, is used to connect audiogenic devices such as sound console, for said audio-video intelligent switch provides audio signal; Master terminal audio frequency auxiliary input 2 is used to connect master terminal auxiliary audio frequency input interface, is that main video terminal provides audio signal; Power interface 9 is used to connect power supply, for said audio-video intelligent switch provides the power supply support; Standby terminal audio frequency auxiliary input 10 is used to connect standby terminal auxiliary audio frequency input interface, for the alternate video terminal provides audio signal; Control mouth 17 is used for said audio-video intelligent switch parameter configuration; Two-way audio frequency and video input signal interface 18 (20) and two-way audio frequency and video output signaling interface 19 (21); Audio frequency and video input signal interface 18 independent corresponding two-way audio frequency and video output signaling interfaces 19 (21); Audio frequency and video input signal interface 20 independent corresponding two-way audio frequency and video output signaling interfaces 19 (21); Through audio frequency and video being exported the detection of the signal level value of signaling interface 18 inputs; Judge whether input signal is normal, export synchronously as normally then this audio frequency and video input signal being switched to first via audio frequency and video output signaling interface 19 and the second tunnel audio frequency and video output signaling interface 21 simultaneously; Undesired like input signal; Then another road audio frequency and video are exported the detection of the signal level value of signaling interface 20 inputs; As normally, then the audio-video signal of this input is switched simultaneously and export signaling interface 21 to first via audio frequency and video output signaling interface 19 with the second tunnel audio frequency and video and export synchronously.
This audio-video intelligent switch also possesses the function of signal bypass after the power down.On audio frequency auxiliary input 1 and master terminal audio frequency auxiliary input 2, be provided with electronic relay respectively; Also be provided with electronic relay between each passage of each passage of audio frequency and video input signal interface 18 (20) and output audio frequency and video output signaling interface 19 (20) in addition.When this device looses power or when breaking down, the direct relay of input interface and output interface is a closure state, thereby realizes the signal bypass functionality.
This audio-video intelligent switch is designed with two CPU in circuit, be responsible for carrying out signal processing for one, and another is responsible for collection and control to signal; Be designed with 10 electronic switches in the circuit in addition and be responsible for the switching of audio-video signal passage, corresponding one tunnel audio frequency and video passage of each electronic switch, signal amplifies, distributes this channel signal through drive circuit after switching.
The CPU that is responsible for signals collecting and control gathers the luminance level value of audio frequency and video input signal interface 18; The each collection averaged for 4 times; Audio frequency and video input signal interface 20 is carried out identical sampling to be judged; If find that audio frequency and video input signal interface 18 sampled values are unusual, be lower than the threshold value of setting, and audio frequency and video input signal interface 20 sampled values just often; This CPU will send switching command to 10 electronic switches; Carry out the switching (realize active and standby switch) of audio-video signal passage by 10 electronic switches, be responsible for the audio frequency and video of switching this passage of back are amplified and distributed, realize that subsequent use audio-video signal is distributed to two-way output audio frequency and video output signaling interface 19 to be exported signaling interface 21 with audio frequency and video and export by the corresponding drive circuit of each electronic switch with audio-video signal.
Said first via audio frequency and video input signal interface 18 comprises master terminal near-end video output interface 3, is used to connect master terminal near-end video output interface, for said audio-video intelligent switch provides master terminal near-end vision signal; Master terminal far-end video output interface 4 is used to connect master terminal far-end video output interface, for said audio-video intelligent switch provides master terminal far-end vision signal; Master terminal audio output interface 5 is used to connect the master terminal audio output interface, for said audio-video intelligent switch provides the master terminal audio signal.
Said another road audio frequency and video input signal interface 20 comprises standby terminal near-end video output interface 11, is used to connect standby terminal near-end video output interface, for said audio-video intelligent switch provides standby terminal near-end vision signal; Standby terminal far-end video output interface 12 is used to connect standby terminal far-end video output interface, for said audio-video intelligent switch provides standby terminal far-end vision signal; Standby terminal audio output interface 13 is used to connect the standby terminal audio output interface, for said audio-video intelligent switch provides the standby terminal audio signal.
Said first via audio frequency and video output signaling interface 19 comprises the first display device near-end video input interface 6, is used to connect display device, shows the current activated terminals near-end vision signal that said audio-video intelligent switch provides; The first display device far-end video input interface 7 is used to connect display device, shows the current activated terminals far-end vision signal that said audio-video intelligent switch provides; The first display device audio input interface 8 is used to connect display device, is the current activated terminals audio signal that said audio-video intelligent switch provides.
Said the second tunnel audio frequency and video output signaling interface 21 comprises the second display device near-end video input interface 14, is used to connect display device, shows the current activated terminals near-end vision signal that said audio-video intelligent switch provides; The second display device far-end video input interface 15 is used to connect display device, shows the current activated terminals far-end vision signal that said audio-video intelligent switch provides; The second display device audio input interface 16 is used to connect display device, is the current activated terminals audio signal that said audio-video intelligent switch provides.
The main performance index of said audio-video intelligent switch:
Automatically triggering to switch switches optional with manual triggers;
The priority of two paths of signals can be set;
The automatic switchover time is adjustable between 10ms-2500ms;
Possesses bypass functionality after the power down;
Can be through middle control control;
Can the two-way shows signal and the audio signal of video terminal be switched to output interface synchronously;
Support YPbPr, the CVBS interface;
Support 1920 * 1080P, 1920 * 1080I and 1080 * 720P standard.
When said audio-video intelligent switch uses; As shown in Figure 2; Main equipment terminal 22 and alternate device terminal 23 are connected respectively to two-way audio frequency and video input signal interface 18 (20); Carry out signals collecting, and, will regulate and control platform 26 accessing to audio auxiliary inputs 1 simultaneously inserting two display devices 24 (25) respectively on first via audio frequency and video output signaling interface 19 and the second tunnel audio frequency and video output signaling interface 21; Detection is connected to the signal level value of the audio frequency and video input signal interface 18 at main equipment terminal 22; Normal like testing result; Then the audio-video signal with main equipment terminal 22 outputs to first via audio frequency and video output signaling interface 19 and the second tunnel audio frequency and video output signaling interface 21 simultaneously, and finally outputs to two display devices 24 (25); When the signal level value of the audio frequency and video input signal interface 18 at detected main equipment terminal 22 is undesired; Then the signal level value to the audio frequency and video input signal interface 20 that is connected to alternate device terminal 23 detects; As detect normal; Then the audio-video signal with alternate device terminal 23 outputs to first via audio frequency and video output signaling interface 19 and the second tunnel audio frequency and video output signaling interface 21 simultaneously, and finally outputs to two display devices 24 (25).
This embodiment the preferred embodiments of the present invention can not limit the present invention, and concrete each item rights protection scope is defined by the claims.
Claims (8)
1. an audio-video intelligent switch comprises
The audio frequency auxiliary input is used to connect audiogenic devices such as sound console, for said audio-video intelligent switch provides audio signal;
Master terminal audio frequency auxiliary input is used to connect master terminal auxiliary audio frequency input interface, is that main video terminal provides audio signal;
Power interface is used to connect power supply, for said audio-video intelligent switch provides the power supply support;
Standby terminal audio frequency auxiliary input is used to connect standby terminal auxiliary audio frequency input interface, for the alternate video terminal provides audio signal;
The control mouth is used for said audio-video intelligent switch parameter configuration;
It is characterized in that: said audio-video intelligent switch also comprises two-way audio frequency and video input signal interface and two-way audio frequency and video output signaling interface; The independent corresponding two-way audio frequency and video output signaling interface of each road audio frequency and video input signal interface; Through audio frequency and video being exported the detection of the signal level value of signaling interface input; Judge whether input signal is normal, export synchronously as normally then this audio frequency and video input signal being switched to first via audio frequency and video output signaling interface and the second tunnel audio frequency and video output signaling interface simultaneously; Undesired like input signal; Then another road audio frequency and video are exported the detection of the signal level value of signaling interface input; As normally, then the audio-video signal of this input is switched to first via audio frequency and video output signaling interface and the second tunnel audio frequency and video output signaling interface simultaneously and export synchronously.
2. audio-video intelligent switch according to claim 1 is characterized in that: between said audio frequency auxiliary input and the master terminal audio frequency auxiliary input electronic relay is set.
3. audio-video intelligent switch according to claim 1 is characterized in that: also be provided with electronic relay between each passage of each passage of said audio frequency and video input signal interface and output audio frequency and video output signaling interface.
4. audio-video intelligent switch according to claim 1; It is characterized in that: said first via audio frequency and video input signal interface comprises master terminal near-end video output interface; Be used to connect master terminal near-end video output interface, for said audio-video intelligent switch provides master terminal near-end vision signal; Master terminal far-end video output interface is used to connect master terminal far-end video output interface, for said audio-video intelligent switch provides master terminal far-end vision signal; The master terminal audio output interface is used to connect the master terminal audio output interface, for said audio-video intelligent switch provides the master terminal audio signal.
5. audio-video intelligent switch according to claim 1; It is characterized in that: said another road audio frequency and video input signal interface comprises standby terminal near-end video output interface; Be used to connect standby terminal near-end video output interface, for said audio-video intelligent switch provides standby terminal near-end vision signal; Standby terminal far-end video output interface is used to connect standby terminal far-end video output interface, for said audio-video intelligent switch provides standby terminal far-end vision signal; The standby terminal audio output interface is used to connect the standby terminal audio output interface, for said audio-video intelligent switch provides the standby terminal audio signal.
6. audio-video intelligent switch according to claim 1; It is characterized in that: said each road audio frequency and video output signaling interface comprises display device near-end video input interface; Be used to connect display device, show the current activated terminals near-end vision signal that said audio-video intelligent switch provides; Display device far-end video input interface is used to connect display device, shows the current activated terminals far-end vision signal that said audio-video intelligent switch provides; The display device audio input interface is used to connect display device, is the current activated terminals audio signal that said audio-video intelligent switch provides.
7. according to claim 1 or 2 or 3 or 4 or 5 or 6 described audio-video intelligent switchs, it is characterized in that: switch to automatic triggering switching or the manual triggers of said two-way audio frequency and video input signal interface are switched.
8. according to claim 1 or 2 or 3 or 4 or 5 or 6 described audio-video intelligent switchs, it is characterized in that: be 10ms-2500ms the switching time of said two-way audio frequency and video input signal interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101107553A CN102761710A (en) | 2011-04-29 | 2011-04-29 | Audio/video intelligent switcher |
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| CN2011101107553A CN102761710A (en) | 2011-04-29 | 2011-04-29 | Audio/video intelligent switcher |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103124333A (en) * | 2012-12-27 | 2013-05-29 | 北京恒泰实达科技股份有限公司 | Hot standby device and visualization service device comprising same |
| CN104702860A (en) * | 2015-03-19 | 2015-06-10 | 深圳市载德光电技术开发有限公司 | FPGA-based (field programmable gate array-based) video image switching system |
| CN107018371A (en) * | 2017-04-18 | 2017-08-04 | 浙江大华技术股份有限公司 | A kind of video acquisition control method and device |
| CN108055482A (en) * | 2017-12-21 | 2018-05-18 | 威创集团股份有限公司 | Hoop goes out device, video acquisition box and video codec |
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| CN101330578A (en) * | 2008-06-13 | 2008-12-24 | 大连科迪视频技术有限公司 | Intelligent switching system for digital television signal |
| CN101389013A (en) * | 2008-10-16 | 2009-03-18 | 中兴通讯股份有限公司 | Main and standby code stream switching implementing device, method and system for mobile multimedia broadcast system |
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Patent Citations (3)
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| CN101090476A (en) * | 2007-07-23 | 2007-12-19 | 杭州华三通信技术有限公司 | Switchover method for video terminal and multi-point control unit |
| CN101330578A (en) * | 2008-06-13 | 2008-12-24 | 大连科迪视频技术有限公司 | Intelligent switching system for digital television signal |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124333A (en) * | 2012-12-27 | 2013-05-29 | 北京恒泰实达科技股份有限公司 | Hot standby device and visualization service device comprising same |
| CN104702860A (en) * | 2015-03-19 | 2015-06-10 | 深圳市载德光电技术开发有限公司 | FPGA-based (field programmable gate array-based) video image switching system |
| CN104702860B (en) * | 2015-03-19 | 2017-12-05 | 深圳市载德光电技术开发有限公司 | Video image switching system based on FPGA |
| CN107018371A (en) * | 2017-04-18 | 2017-08-04 | 浙江大华技术股份有限公司 | A kind of video acquisition control method and device |
| CN107018371B (en) * | 2017-04-18 | 2020-02-14 | 浙江大华技术股份有限公司 | Video acquisition control method and device |
| CN108055482A (en) * | 2017-12-21 | 2018-05-18 | 威创集团股份有限公司 | Hoop goes out device, video acquisition box and video codec |
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Application publication date: 20121031 |