CN107231542A - Video conferencing system - Google Patents
Video conferencing system Download PDFInfo
- Publication number
- CN107231542A CN107231542A CN201710309202.8A CN201710309202A CN107231542A CN 107231542 A CN107231542 A CN 107231542A CN 201710309202 A CN201710309202 A CN 201710309202A CN 107231542 A CN107231542 A CN 107231542A
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- signal
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- inductance
- electric capacity
- video signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/152—Multipoint control units therefor
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention discloses a kind of video conferencing system, including audio-video signal input port, first signal processor, microprocessor, signal switching processor, secondary signal processor, digital decoding processor, signal distributor, audio-video signal output port, export selection control, microphone, camera, display and wireless communication module, audio-video signal input port obtains the first audio-video signal in the streaming media signal of external equipment input and is sent to the first signal processor, first signal processor is converted to the first pretreatment audio-video signal for meeting the first output format after being pre-processed to the first audio-video signal；Signal distributor includes the first inductance, the second inductance, the 3rd inductance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, first resistor, second resistance and the first Transient Suppression Diode.The present invention can allow personnel participating in the meeting understand whenever and wherever possible conference content, circuit safety and reliability it is higher.
Description
Technical field
The present invention relates to Intelligent office field, more particularly to a kind of video conferencing system.
Background technology
With the development of society, the application of video conferencing system also becomes increasingly popular.Video conference be using TV tech and
Equipment, a kind of multimedia communication mode held a meeting by communication network.When holding video conference, in two places or multiple
The delegate participating in the conference of different location, can both hear the sound of other side, and the image of other side can be seen again, while can also see other side's meeting
Scene and the material object, picture, form, the file that show in a meeting of room etc. are discussed, the distance of delegate participating in the conference is shortened, enhances
The atmosphere of meeting, makes everybody just as participating in meeting in same place, significantly improves operating efficiency.In existing video conferencing system
In, because its circuit part lacks corresponding circuit protection function, cause the safety and reliability of circuit relatively low.In addition, such as
Fruit personnel participating in the meeting is not if beside computer, it is impossible to understand the content of meeting whenever and wherever possible.
The content of the invention
The technical problem to be solved in the present invention is, the drawbacks described above for prior art there is provided one kind can allow participant
Member understands the higher video conferencing system of safety and reliability of conference content, circuit whenever and wherever possible.
The technical solution adopted for the present invention to solve the technical problems is：A kind of video conferencing system is constructed, including sound is regarded
Frequency signal input port, the first signal processor, microprocessor, signal switching processor, secondary signal processor, digital decoding
Processor, signal distributor, audio-video signal output port, output selection control, microphone, camera, display and nothing
Line communication module, the audio-video signal input port obtains the first audio frequency and video in the streaming media signal that external equipment is inputted
Signal, and first signal processor is sent it to, first signal processor enters to first audio-video signal
The the first pretreatment audio-video signal for meeting the first output format is converted to after row pretreatment, and the described first pretreatment sound is regarded
Frequency signal is sent to the microprocessor, and the microprocessor controls the second sound of the microphone and camera collection site to regard
Frequency signal simultaneously sends it to the signal switching processor and changed, and the signal switching processor regards the sound after conversion
Frequency signal is sent to the secondary signal processor, and the secondary signal processor carries out the audio-video signal after the conversion
The the second pretreatment audio-video signal for meeting the second output format is converted to after pretreatment, and audio frequency and video are pre-processed by described second
Signal is sent to the microprocessor, and the output selection control is described to microprocessor input selection control command
Microprocessor sends it to the signal distribution according to the selection control command selection audio-video signal to be exported
The audio-video signal to be exported is distributed into more than two-way synchronous and consistent output audio frequency and video by device, the signal distributor
Signal, and the output audio-video signal is sent to the digital decoding processor progress decoding conversion, and decoding is changed
Audio frequency and video afterwards are sent to the display and shown, the audio-video signal output port connects with the signal distributor
Connect, for being exported to the output audio-video signal, the wireless communication module and the audio-video signal output port
Connect, for the output audio-video signal to be transferred into mobile terminal；
The signal distributor includes the first inductance, the second inductance, the 3rd inductance, the first electric capacity, the second electric capacity, the 3rd electricity
Appearance, the 4th electric capacity, first resistor, second resistance and the first Transient Suppression Diode, the moon of first Transient Suppression Diode
Pole connects the intermediate node of input and the first inductance, the plus earth of first Transient Suppression Diode, first electricity
One end of sense is connected by the first resistor with one end of second inductance, the intermediate node of second inductance with it is described
One end connection of second electric capacity, the other end ground connection of second electric capacity, the intermediate node of second inductance is also connected with first
Output end, the other end of second inductance is connected with one end of first electric capacity, the other end ground connection of first electric capacity,
The other end of first inductance is connected by the second resistance with one end of the 3rd inductance, in the 3rd inductance
Intermediate node is connected with one end of the 4th electric capacity, the other end ground connection of the 4th electric capacity, the middle node of the 3rd inductance
Point is also connected with the second output end, and the other end of the 3rd inductance is connected with one end of the 3rd electric capacity, the 3rd electric capacity
The other end ground connection.
In video conferencing system of the present invention, the signal distributor also includes 3rd resistor and the 4th resistance,
One end of the 3rd resistor is connected with the intermediate node of second inductance, the other end of the 3rd resistor and described second
One end connection of electric capacity, one end of the 4th resistance is connected with the intermediate node of the 3rd inductance, the 4th resistance
The other end is connected with one end of the 4th electric capacity.
In video conferencing system of the present invention, the signal distributor also includes the 5th resistance and the 6th resistance,
One end of 5th resistance is connected with one end of first electric capacity, the other end and second inductance of the 5th resistance
The other end connection.
In video conferencing system of the present invention, the signal distributor also includes the 7th resistance, the 7th electricity
One end of resistance is connected with one end of second electric capacity, and the other end of the 7th resistance connects first output end.
In video conferencing system of the present invention, the signal distributor also includes the 8th resistance, the 8th electricity
One end of resistance is connected with one end of the 4th electric capacity, and the other end of the 8th resistance connects second output end.
In video conferencing system of the present invention, the wireless communication module be bluetooth module, WIFI module,
Zigbee module, GPRS module, CDMA module or WCDMA modules.
Implement the video conferencing system of the present invention, have the advantages that：Due to provided with audio-video signal input port,
First signal processor, microprocessor, signal switching processor, secondary signal processor, digital decoding processor, signal distribution
Device, audio-video signal output port, output selection control, microphone, camera, display and wireless communication module, sound are regarded
Frequency signal output port can will export audio-video signal and be sent to mobile terminal, signal distributor bag by wireless communication module
Include the first inductance, the second inductance, the 3rd inductance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, first resistor,
Two resistance and the first Transient Suppression Diode, first resistor and second resistance are used to carry out overcurrent protection, therefore can allow participant
Member whenever and wherever possible understand conference content, circuit safety and reliability it is higher.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation in video conferencing system one embodiment of the present invention；
Fig. 2 is the circuit theory diagrams of signal distributor in the embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In video conferencing system embodiment of the present invention, the structural representation of the video conferencing system is as shown in Figure 1.Fig. 1
In, the video conferencing system include audio-video signal input port 1, the first signal processor 2, microprocessor 3, at signal conversion
Manage device 4, secondary signal processor 5, digital decoding processor 6, signal distributor 7, audio-video signal output port 8, output choosing
Controller 9, microphone 10, camera 11, display 12 and wireless communication module 13 are selected, wherein, audio-video signal input port 1
The first audio-video signal in the streaming media signal that external equipment is inputted is obtained, and by it in the form of low-voltage differential signal
The first signal processor 2 is sent to, the first 2 pair first of signal processor audio-video signal is converted to after pre-processing meets
First pretreatment audio-video signal of one output format, and the first pretreatment audio-video signal is sent to microprocessor 3, it is worth
One is mentioned that, when 2 pair of first audio-video signal of the first signal processor is pre-processed, can change the first audio-video signal
Output format, the frame per second of signal and sample rate, video acquisition are changed into YUV422 video frequency outputs, and audio collection is changed into 48HzPCM sounds
Frequency is exported.
Microprocessor 3 controls microphone 10 and the second live audio-video signal of 11 pairs of camera to be acquired, and will adopt
The second audio-video signal collected is sent to signal switching processor 4 and changed；Signal switching processor 4 is by the sound after conversion
Vision signal is sent to secondary signal processor 5, after secondary signal processor 5 is pre-processed the audio-video signal after conversion
Be converted to meet the second output format second pretreatment audio-video signal, and by second pretreatment audio-video signal be sent to it is micro-
Processor 3.It is noted that when 4 pair of second audio-video signal of signal switching processor is changed, making it transmit data speed
Degree increases and it is carried out signal amplification, and signal switching processor 4 is the DisplayPort interfaces defined with standard high definition
Data converter, can be rapidly converted to VGA or DVI by the DisplayPort interface signals on computer or high definition playback equipment
Or HDMI signal so that it transmits data speed increase.Secondary signal processor 5 is used to believe the audio frequency and video after above-mentioned conversion
Number pre-processed, change its output format, the frame per second of signal and sample rate；Video acquisition is changed into YUV422 video frequency outputs, sound
Frequency collection is changed into 48HzPCM audio output.
Selection control 9 is exported to the input selection control command of microprocessor 4, microprocessor 4 is controlled according to above-mentioned selection
The command selection audio-video signal to be exported, and send it to signal distributor 7, that is to say, that microprocessor 4 is according to input
Selection control command, from first pretreatment audio-video signal and second pretreatment audio-video signal in select one of conduct
Audio-video signal is exported, and sends it to signal distributor 7.
The audio-video signal that signal distributor 7 will be exported is distributed into output audio frequency and video letter more than two-way synchronous and consistent
Number, and the output audio-video signal is sent to digital decoding processor 6 carries out decoding conversion, and the sound decoded after conversion is regarded
Take place frequently and be sent to display 12 and shown, signal distributor 7 can transmit uncompressed HD video and multichannel to high-quality
Voice data, while without transmitting advance row D/A or analog/digital conversion in signal, it is ensured that the audio-visual letter of first water
Number transmission, with signal buffering and amplifying power, supports HD video, high-quality, clear, up to 1080p HDTV resolution ratio, gently
Pine obtains the computer resolution ratio for being up to 1920x1200.
Digital decoding processor 6 is used to carry out output audio-video signal digital-to-analog decoding conversion, and by decoded turn
Audio frequency and video after changing are sent into display 12.Digital decoding processor 6 is changed by digital-to-analog, is made after decoded conversion
Audio frequency and video be changed into R, G, B tricolor signal and row, field sync signal, these signals are transferred to microprocessor by analog signal line
Device 3 carries out poor feeding and puts processing, is sent to the progress image of display 12 and shows.Audio-video signal output port 8 is distributed with signal
Device 7 connects, for being exported to output audio-video signal, wireless communication module 13 is connected with audio-video signal output port 8,
For output audio-video signal to be transferred into mobile terminal.Because mobile terminal can be carried with, audio frequency and video will be exported
Signal is transferred to mobile terminal, and personnel participating in the meeting can just understand conference content whenever and wherever possible.
It is noted that in the present embodiment, mobile terminal can be smart mobile phone or tablet personal computer etc..Radio communication mold
Block 13 can be bluetooth module, WIFI module, Zigbee module, GPRS module, CDMA module or WCDMA modules etc., by setting
Various wireless communication mode is put, the demand of different user can be met, increases the flexibility of communication mode.
Fig. 2 is the circuit theory diagrams of signal distributor in the present embodiment, in Fig. 2, and the signal distributor 7 includes the first inductance
L1, the second inductance L2, the 3rd inductance L3, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, first resistor
R1, second resistance R2 and the first Transient Suppression Diode D1, wherein, the first Transient Suppression Diode D1 negative electrode connection input
VIN and the first inductance L1 intermediate node, the first Transient Suppression Diode D1 plus earth, the first inductance L1 one end pass through
First resistor R1 is connected with the second inductance L2 one end, and the second inductance L2 intermediate node is connected with the second electric capacity C2 one end,
Second electric capacity C2 other end ground connection, the second inductance L2 intermediate node is also connected with the first output end VOUT1, the second inductance L2's
The other end is connected with the first electric capacity C1 one end, the first electric capacity C1 other end ground connection, and the first inductance L1 other end passes through the
Two resistance R2 are connected with the 3rd inductance L3 one end, and the 3rd inductance L3 intermediate node is connected with the 4th electric capacity C4 one end, the
Four electric capacity C4 other end ground connection, the 3rd inductance L3 intermediate node is also connected with the second output end VOUT2, and the 3rd inductance L3's is another
One end is connected with the 3rd electric capacity C3 one end, the 3rd electric capacity C3 other end ground connection.
Above-mentioned first resistor R1 and second resistance R2 are current-limiting resistance, and first resistor R1 is used for the first inductance L1 and the
Branch road between two inductance L2 carries out overcurrent protection, and second resistance R2 is used for the branch between the first inductance L1 and the 3rd inductance L3
Road carries out overcurrent protection.Therefore the safety and reliability of circuit is higher.
In the present embodiment, the second electric capacity C2 is identical with the capacitance of the 4th electric capacity C4, make the first output end VOUT1 and
There is second output end VOUT2 identical to filter and antijamming capability, it is ensured that the first output end VOUT1 and the second output end
The uniformity of VOUT2 signals.By setting the first Transient Suppression Diode D1 in input VIN, Transient Suppression Diode is utilized
By the principle of low resistance state can be changed into during surge voltage from high-impedance state within tens nanoseconds, surge voltage is set to press down by the first transient state
The incoming ground wires of diode D1 processed, effectively can prevent from being struck by lightning the surge voltage brought, the safety of protection signal distributor 7.
In the present embodiment, the signal distributor 7 also includes 3rd resistor R3 and the 4th resistance R4, wherein, 3rd resistor R3
One end be connected with the second inductance L2 intermediate node, the 3rd resistor R3 other end is connected with the second electric capacity C2 one end,
Four resistance R4 one end is connected with the 3rd inductance L3 intermediate node, the 4th resistance R4 other end and the 4th electric capacity C4 one end
Connection.3rd resistor R3 and the 4th resistance R4 is current-limiting resistance, and 3rd resistor R3 is used for the second inductance L2 and the second electric capacity
Branch road between C2 carries out overcurrent protection, and the 4th resistance R4 is used to carry out the branch road between the 3rd inductance L3 and the 4th electric capacity C4
Overcurrent protection, to further enhance the safety and reliability of circuit.
In the present embodiment, the signal distributor 7 also includes the 5th resistance R5 and the 6th resistance R6, wherein, the 5th resistance R5
One end be connected with the first electric capacity C1 one end, the 5th resistance R5 other end is connected with the second inductance L2 other end.5th
Resistance R5 and the 6th resistance R6 is current-limiting resistance, and the 5th resistance R5 is used for the branch between the second inductance L2 and the first electric capacity C1
Road carries out overcurrent protection, and the 6th resistance R6 is used to carry out overcurrent protection to the branch road between the 3rd inductance L3 and the 3rd electric capacity C3,
Further to strengthen the safety and reliability of circuit.
In the present embodiment, the signal distributor 7 also includes the 7th resistance R7, the 7th resistance R7 one end and the second electric capacity C2
One end connection, the 7th resistance R7 other end connects the first output end VOUT1.7th resistance R7 be current-limiting resistance, for pair
Branch road between second electric capacity C2 and the first output end VOUT1 carries out overcurrent protection, to further enhance the effect of current limliting.
In the present embodiment, the signal distributor 7 also includes the 8th resistance R8, the 8th resistance R8 one end and the 4th electric capacity C4
One end connection, the 8th resistance R8 other end connects the second output end VOUT2.8th resistance R8 be current-limiting resistance, for pair
Branch road between 4th electric capacity C4 and the second output end VOUT2 carries out overcurrent protection, further to strengthen the effect of current limliting.
In a word, in the present embodiment, due to being sent to mobile terminal by audio-video signal is exported by wireless communication module 13,
So personnel participating in the meeting can just understand conference content whenever and wherever possible, simultaneously as current-limiting resistance is provided with signal distributor 7, can be with
Overcurrent protection is carried out, therefore the safety and reliability of circuit is higher.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (6)
1. a kind of video conferencing system, it is characterised in that including audio-video signal input port, the first signal processor, Wei Chu
Manage device, signal switching processor, secondary signal processor, digital decoding processor, signal distributor, audio-video signal output end
Mouth, output selection control, microphone, camera, display and wireless communication module, the audio-video signal input port are obtained
The first audio-video signal in the streaming media signal that external equipment inputted is taken, and sends it to first signal transacting
Device, first signal processor is converted to after being pre-processed to first audio-video signal meets the first output format
First pretreatment audio-video signal, and the described first pretreatment audio-video signal is sent to the microprocessor, micro- place
Reason device controls the second audio-video signal of the microphone and camera collection site and sent it at the signal conversion
Reason device is changed, and the audio-video signal after conversion is sent to the secondary signal processor by the signal switching processor,
The secondary signal processor is converted to after the audio-video signal after the conversion is pre-processed meets the second output format
Second pretreatment audio-video signal, and by described second pretreatment audio-video signal be sent to the microprocessor, it is described defeated
Go out selection control to microprocessor input selection control command, the microprocessor is selected according to the selection control command
Select the audio-video signal to be exported, and send it to the signal distributor, the signal distributor to be exported described
Audio-video signal is distributed into more than two-way synchronous and consistent output audio-video signal, and the output audio-video signal is transmitted
Decoding conversion is carried out to the digital decoding processor, and the audio frequency and video decoded after conversion are sent to the display and shown
Show, the audio-video signal output port is connected with the signal distributor, for defeated to the output audio-video signal progress
Go out, the wireless communication module is connected with the audio-video signal output port, for the output audio-video signal to be transmitted
To mobile terminal；
The signal distributor include the first inductance, the second inductance, the 3rd inductance, the first electric capacity, the second electric capacity, the 3rd electric capacity,
4th electric capacity, first resistor, second resistance and the first Transient Suppression Diode, the negative electrode of first Transient Suppression Diode connect
Connect the intermediate node of input and the first inductance, the plus earth of first Transient Suppression Diode, first inductance
One end is connected by the first resistor with one end of second inductance, the intermediate node of second inductance and described second
One end connection of electric capacity, the other end ground connection of second electric capacity, the intermediate node of second inductance is also connected with the first output
End, the other end of second inductance is connected with one end of first electric capacity, the other end ground connection of first electric capacity, described
The other end of first inductance is connected by the second resistance with one end of the 3rd inductance, the middle node of the 3rd inductance
Point is connected with one end of the 4th electric capacity, the other end ground connection of the 4th electric capacity, and the intermediate node of the 3rd inductance is also
Connect the second output end, the other end of the 3rd inductance is connected with one end of the 3rd electric capacity, the 3rd electric capacity it is another
One end is grounded.
2. video conferencing system according to claim 1, it is characterised in that the signal distributor also includes 3rd resistor
With the 4th resistance, one end of the 3rd resistor is connected with the intermediate node of second inductance, the 3rd resistor it is another
End is connected with one end of second electric capacity, and one end of the 4th resistance is connected with the intermediate node of the 3rd inductance, institute
The other end for stating the 4th resistance is connected with one end of the 4th electric capacity.
3. video conferencing system according to claim 2, it is characterised in that the signal distributor also includes the 5th resistance
With the 6th resistance, one end of the 5th resistance is connected with one end of first electric capacity, the other end of the 5th resistance with
The other end connection of second inductance.
4. video conferencing system according to claim 3, it is characterised in that the signal distributor also includes the 7th electricity
Resistance, one end of the 7th resistance is connected with one end of second electric capacity, and the other end of the 7th resistance connects described the
One output end.
5. the video conferencing system according to Claims 1-4 any one, it is characterised in that the signal distributor is also
Including the 8th resistance, one end of the 8th resistance is connected with one end of the 4th electric capacity, the other end of the 8th resistance
Connect second output end.
6. the video conferencing system according to Claims 1-4 any one, it is characterised in that the wireless communication module
For bluetooth module, WIFI module, Zigbee module, GPRS module, CDMA module or WCDMA modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710309202.8A CN107231542A (en) | 2017-05-04 | 2017-05-04 | Video conferencing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710309202.8A CN107231542A (en) | 2017-05-04 | 2017-05-04 | Video conferencing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107231542A true CN107231542A (en) | 2017-10-03 |
Family
ID=59934192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710309202.8A Pending CN107231542A (en) | 2017-05-04 | 2017-05-04 | Video conferencing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107231542A (en) |
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| CN109120902A (en) * | 2018-10-09 | 2019-01-01 | 六安腾达信息科技有限公司 | video security monitoring system |
| CN109275010A (en) * | 2018-11-21 | 2019-01-25 | 北京未来媒体科技股份有限公司 | A kind of 4K panorama is super to merge video terminal adaptation method and device |
| CN109348246A (en) * | 2018-11-21 | 2019-02-15 | 北京未来媒体科技股份有限公司 | A kind of super fusion net cast method and device of 4K panorama |
| CN114051115A (en) * | 2021-11-04 | 2022-02-15 | 四川天辰智联科技有限公司 | Online interactive teaching video conference system |
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| CN114051115A (en) * | 2021-11-04 | 2022-02-15 | 四川天辰智联科技有限公司 | Online interactive teaching video conference system |
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Application publication date: 20171003 |