CN207075051U - A kind of transmission equipment of network cable transmission audio-video signal and serial signal - Google Patents
A kind of transmission equipment of network cable transmission audio-video signal and serial signal Download PDFInfo
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- CN207075051U CN207075051U CN201720692561.1U CN201720692561U CN207075051U CN 207075051 U CN207075051 U CN 207075051U CN 201720692561 U CN201720692561 U CN 201720692561U CN 207075051 U CN207075051 U CN 207075051U
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Abstract
Field of communication transmission is the utility model is related to, is to provide a kind of transmission equipment of network cable transmission audio-video signal and serial signal.The transmission equipment includes：Master machine, netting twine, transmitting terminal, transmitting terminal in usb signal and control signal dc-couple to netting twine and will be transferred to by filter circuit inside master machine, transmitting terminal passes through ac-coupled circuit, audio-video signal is coupled on netting twine by DC coupling circuit and filter circuit is transferred to master machine, audio-video signal, usb signal and control signal are transmitted by a netting twine using simple termination power using netting twine simultaneous transmission audio-video signal, usb signal and control signal, the utility model so as to realize.Convenient, fast, strong applicability, it is possible to achieve the transmission and control of relatively long distance, and can realize and Time-sharing control is carried out to multiple computers main frame.
Description
Technical field
It the utility model is related to field of communication transmission, more particularly to a kind of network cable transmission audio-video signal and serial signal
Transmission equipment.
Background technology
With in the market HDMI, DVI interface popularization, the various main frames such as various servers, computer, notebook are more and more
Use HDMI and DVI interface.In some occasions（Such as computer room, classroom）, it is necessary to various main frames are carried out in the range of certain distance
Control even carries out Time-sharing control to multiple host.It is a set of using KVM switcher, use at present in order to save space and resource
Keyboard and mouse display carries out Time-sharing control to multiple host, but KVM switcher is present that distribution quantity is more, heavy, transmission distance
From it is limited the problems such as.
Therefore, the utility model proposes being transmitted control using netting twine, simultaneous transmission audio-video signal and usb signal,
The serial signals such as control signal.
The content of the invention
The purpose of this utility model is to provide a kind of transmission equipment of network cable transmission audio-video signal and serial signal have
Body be to provide it is a kind of by the serial signals such as single netting twine simultaneous transmission audio-video signal and usb signal, control signal so as to
The transmission equipment that various host computers are controlled.
To reach above-mentioned purpose, the utility model adopts the following technical scheme that：
A kind of transmission equipment of network cable transmission audio-video signal and serial signal, including：Master machine, netting twine and transmitting terminal.
Master machine is provided with audio-video interface, USB interface, cable interface and control interface, audio-video interface connection display
Device or TV, USB interface connection USB device.
Transmitting terminal is provided with audio-video interface, USB interface, cable interface and control interface, audio-video interface and USB interface
Controlled main frame is connected, control interface is used to receive external control instruction or externally sends instruction.
Ac-coupled circuit, DC coupling circuit and filter circuit are provided with inside master machine and transmitting terminal, exchanges coupling
Close circuit, DC coupling circuit and filter circuit are respectively connected on respective cable interface, DC coupling circuit with exchange
Termination power is directly connected on cable interface, and filter circuit is connected with DC coupling circuit.
Be additionally provided with main control chip inside master machine, main control chip by electronic switch, filter circuit and termination power with
Cable interface connects.Audio-video switch obtains audio frequency and video AC differential signal by ac-coupled circuit connected with network cable simultaneously.
Transmitting terminal is internally provided with control chip, and control chip connects USB interface by USB module, and control chip passes through
Filter circuit, DC coupling circuit in transmitting terminal are connected to cable interface.
The filter circuit of master machine and the filter circuit of transmitting terminal include respectively：2 groups of capacitor filters, 4 groups of low passes and
High-pass filtering circuit, the 3rd coffret and the 6th coffret of 2 groups of capacitor filter difference connected with network cable interfaces, netting twine
The 5th coffret, the 6th coffret, the 7th coffret and the 8th coffret of interface connect respectively one group of low pass and
High-pass filtering circuit.
Master machine is connected with transmitting terminal by netting twine, the first transmission line of netting twine, the second transmission line, the 3rd transmission line,
Four transmission lines, the 5th transmission line, the 6th transmission line, the 7th transmission line and the 8th transmission line respectively with master machine and transmitting terminal netting twine
First coffret of interface, the second coffret, the 3rd coffret, the 4th coffret, the 5th coffret, the 6th biography
Defeated interface, the 7th coffret and the connection of the 8th coffret.
Further, simulated television or audio frequency and video control circuit, simulated television or sound are also provided with inside transmitting terminal
Video control circuit connects audio-video interface, and simulated television or audio frequency and video control circuit are controlled by control chip.
Further, master machine is provided with multiple cable interfaces, and multiple cable interfaces are respectively connected with termination power and filtering
Circuit, the main control chip of master machine are connected to the filter circuit of multichannel by multi-channel electronic switch.
Certainly, it is to understand for convenience to the numbering of transmission line in netting twine in the utility model, is not with this limiting net
The order of line transmission, eight transmission lines in netting twine do not have substantial difference, can suitably adjust eight biographies as needed
The order of defeated line.
The utility model has the advantage of：
It is 1. convenient fast by the way that audio-video signal, usb signal and control signal are coupling on a netting twine and be transmitted
Victory, equipment are simply light；
2. it can realize and multiple devices are carried out with Time-sharing control, and convenient switching, control, share；
3. by setting a variety of operations such as UI control interfaces and shortcut key, keyboard combination hot key, serial ports control command to control
Mode processed, improve the controlling extent to equipment and convenient degree.
Brief description of the drawings
Fig. 1 is a kind of general principles of the transmission equipment of network cable transmission audio-video signal and serial signal described in embodiment 1
Figure；
Fig. 2 is in master machine in a kind of transmission equipment of network cable transmission audio-video signal and serial signal described in embodiment 1
The concrete principle figure in portion；
Fig. 3 is in transmitting terminal in a kind of transmission equipment of network cable transmission audio-video signal and serial signal described in embodiment 1
The concrete principle figure in portion；
Fig. 4 is a kind of network cable transmission audio-video signal that audio frequency and video control circuit is provided with transmitting terminal described in embodiment 2
With the schematic diagram of the transmission equipment of serial signal；
Fig. 5 is also comprising signal amplifier in a kind of audio frequency and video control circuit set in transmitting terminal described in embodiment 3
The schematic diagram of the transmission equipment of network cable transmission audio-video signal and serial signal；
Fig. 6 is that a kind of described in embodiment 6 can control multiple computers main frame, network cable transmission audio-video signal and serial letter
Number transmission equipment schematic diagram.
Embodiment
Embodiment 1：Reference picture 1-3, a kind of transmission equipment of network cable transmission audio-video signal and serial signal, including：It is main
Machine, netting twine and transmitting terminal.
Master machine is provided with audio-video interface, USB interface, cable interface, control interface, audio-video interface connection display
Device, USB interface connection USB device, control interface connect external control device.
Transmitting terminal is provided with audio-video interface, USB interface, cable interface, control interface, audio-video interface and USB interface
Connect PC main frames or other signal source equipments；Control interface can include but is not limited to：Other Industry Controls such as serial ports connect
Mouthful, wireless transmission interface is for example infrared, 2.4G interfaces.
Ac-coupled circuit, DC coupling circuit and filter circuit, the friendship are provided with inside master machine and transmitting terminal
Stream termination power, DC coupling circuit and filter circuit are respectively connected on respective cable interface, DC coupling circuit and
Ac-coupled circuit is directly connected on cable interface, and filter circuit is connected with DC coupling circuit.
The ac-coupled circuit of master machine comes out audio-video signal separation and Extraction, and DC coupling circuit and filter circuit will
The control signal dc-couple of master machine is on netting twine.
Audio-video signal is coupled on netting twine by the ac-coupled circuit of transmitting terminal to be transmitted, DC coupling circuit and filter
Wave circuit comes out the usb signal transmitted from master machine and control signal separation and Extraction.
Main control chip is additionally provided with inside master machine, main control chip is connect by filter circuit and DC coupling circuit with netting twine
Mouth connection, while audio-video switch obtains audio frequency and video AC differential signal by ac-coupled circuit connected with network cable, in master control core
Under the control of piece, audio-video signal is output on display or TV by audio-video switch.
Transmitting terminal is internally provided with control chip, and control chip connects USB interface by USB module, and control chip passes through
Filter circuit, DC coupling circuit and ac-coupled circuit in transmitting terminal are connected to cable interface.
Specifically, the filter circuit of master machine and the filter circuit of transmitting terminal include respectively：2 groups of capacitor filters, 4 groups
Low pass and high-pass filtering circuit, the 3rd coffret of connected with network cable interface and the 6th transmission connect 2 groups of capacitor filters respectively
Mouthful, the 4th coffret, the 5th coffret, the 7th coffret and the 8th coffret of cable interface connect one respectively
Low pass and high-pass filtering circuit.Wherein filter circuit can be the in series or in parallel of RC filter circuits and lc circuit.
Master machine is connected with transmitting terminal by netting twine, the first transmission line of netting twine, the second transmission line, the 3rd transmission line,
Four transmission lines, the 5th transmission line, the 6th transmission line, the 7th transmission line and the 8th transmission line respectively with master machine and transmitting terminal netting twine
First coffret of interface, the second coffret, the 3rd coffret, the 4th coffret, the 5th coffret, the 6th biography
Defeated interface, the 7th coffret and the connection of the 8th coffret.
By using the transmission equipment of above-mentioned a kind of network cable transmission audio-video signal and serial signal, with the following method
It is transmitted, a kind of method as network cable transmission audio-video signal and usb signal：
Transmitting terminal passes 4 pairs of audio frequency and video AC differential signals in audio video transmission signal by eight transmission lines of netting twine
Defeated to arrive master machine, master machine filters other low frequencies, DC component using ac-coupled circuit, extracts audio frequency and video AC differential letter
Number.
Meanwhile usb signal is processed into serial signal, then serial signal circuit and DC coupling circuit after filtering
It is coupled on the 7th transmission line and the 8th transmission line of netting twine, passes through dc-couple and filter circuit in the other end of netting twine, also
Original goes out usb signal.
Further, the HPD signal in audio-video signal can also be coupled to by filter circuit and DC coupling circuit
3rd transmission line of netting twine, I2C control signals are coupled to the 4th transmission line of netting twine by filter circuit and DC coupling circuit
Pass through DC coupling circuit and filter circuit on the 5th transmission line, while in the other end of netting twine, restore HPD signal and
I2C control signals.
Further, control signal and usb signal can be processed into serial signal by master machine, and be arrived by network cable transmission
Transmitting terminal, it is control signal or usb signal to tell the signal by transmitting terminal；If the signal is control signal, using should
Control signal is configured to transmitting terminal；If the signal is usb signal, the signal is passed through into serial communication protocol（Such as
SPI, I2C, UART etc.）USB module is sent to, usb signal communication is carried out by transmitting terminal and PC.
Embodiment 2：Reference picture 4, the transmission equipment of above-mentioned a kind of network cable transmission audio-video signal and serial signal, transmitting
End is internal can also to set audio frequency and video control circuit, and audio frequency and video control circuit connects audio-video interface, and by the control of transmitting terminal
Chip controls processed；Audio frequency and video control circuit includes audio frequency and video control signal processor.
Specifically, include memory and electrical level output circuit in described audio frequency and video control signal processor.
The I2C control signals of audio-video interface are connected with memory, and the corresponding EDID letters of display are stored in memory
Breath, I2C control signals with memory connection by that can obtain corresponding EDID information, without passing through network cable transmission to main frame again
Device.
The HPD signal of audio-video interface is connected with electrical level output circuit, and electrical level output circuit is by exporting high level or low
Level can be as the response of HPD signal, and when electrical level output circuit exports high level, HPD signal detects that connection is good, level
When output circuit exports low level, HPD signal detects that connection disconnects.
The method specifically used, as to a kind of above-mentioned network cable transmission audio-video signal, usb signal and control signal
The further explanation of method, specific method are as follows：
Transmitting terminal passes 4 pairs of audio frequency and video AC differential signals in audio video transmission signal by eight transmission lines of netting twine
Defeated to arrive master machine, master machine filters other low frequencies, DC component using ac-coupled circuit, extracts audio frequency and video AC differential letter
Number；HPD signal and I2C control signals in audio-video signal are handled in the audio-video signal processor of transmitting terminal.
Meanwhile control signal and usb signal are processed into serial signal, then serial signal circuit and straight after filtering
Stream termination power is coupled on the 7th transmission line and the 8th transmission line of netting twine, passes through dc-couple and filter in the other end of netting twine
Wave circuit, restore control signal and usb signal.
Embodiment 3：Reference picture 5, on the basis of embodiment 2, a kind of network cable transmission audio-video signal and serial signal
Transmission equipment, the audio frequency and video control circuit inside transmitting terminal also include signal amplification circuit.
The audio-video signal connection signal amplification circuit of audio-video interface, signal amplification circuit pass through ac-coupled circuit again
It is connected with the cable interface of transmitting terminal, so as to increase transmission range.
Audio frequency and video control circuit connects the control chip of transmitting terminal, and control chip can control whether to enable, and sets
Audio frequency and video control circuit.
The method specifically used, enter one as the method to a kind of above-mentioned network cable transmission audio-video signal and serial signal
Step explanation, specific method are as follows：
Transmitting terminal passes 4 pairs of audio frequency and video AC differential signals in audio video transmission signal by eight transmission lines of netting twine
Defeated to arrive master machine, master machine filters other low frequencies, DC component using ac-coupled circuit, extracts audio frequency and video AC differential letter
Number；HPD signal and I2C control signals in audio-video signal are handled in the audio-video signal processor of transmitting terminal.
Meanwhile control signal and usb signal are processed into serial signal, then serial signal circuit and straight after filtering
Stream termination power is coupled on the 7th transmission line and the 8th transmission line of netting twine, passes through dc-couple and filter in the other end of netting twine
Wave circuit, restore control signal and usb signal.
Further, 4 pairs of audio frequency and video AC differential signals in audio-video signal can be carried out by signal amplification circuit
Amplification, is then transmitted by netting twine again.
Embodiment 4：On the basis of embodiment 1 or embodiment 2 or embodiment 3, further, a kind of above-mentioned netting twine passes
The method and its transmission equipment of defeated audio-video signal and serial signal, transmitting terminal is interior to be directed to audio-video signal, can combine use
Embodiment 1, embodiment 2, embodiment 3, any two in this 3 kinds of modes, or this 3 kinds, it is combined in transmitting terminal, forms more
Function transmitting terminal audio frequency and video processing mode, in real work, wherein certain sound is selected to regard by the control chip of transmitting terminal
Frequency processing mode.
Embodiment 5：It is further, above-mentioned on the basis of embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4
A kind of transmission equipment of network cable transmission audio-video signal and serial signal, video switch is electronic selection switch in master machine, electricity
Sub- selecting switch can select the audio-video signal transmitted from transmitting terminal or from the UI interfaces that main control chip transmits
Signal.
The method specifically used, on the basis of above-mentioned transmission method, the transmission method taken is as follows：
Increase the setting of a UI interfaces progress device parameter, the display of product information and use information, institute in master machine
The display information for stating UI interfaces is sent from the main control chip of master machine, and is passed through with the audio-video signal that is transmitted from transmitting terminal
One video switch, is output to display so that display can show the content at UI interfaces or the audio frequency and video letter of transmitting terminal
Number content；Mechanical course button by pressing master machine sends corresponding quick control signal, or is monitored by main control chip
The usb signal of Keyboard accelerator Macintosh, or received by control interface from external control signal, and by netting twine to this
Usb signal or control signal are transmitted.
Embodiment 6：Reference picture 6, further, in above-described embodiment 1 or embodiment 2 or the base of embodiment 3 or embodiment 4
On plinth, a kind of transmission equipment of network cable transmission audio-video signal and serial signal, master machine is provided with multiple cable interfaces, multiple
Cable interface is respectively connected with DC coupling circuit, ac-coupled circuit and filter circuit, and the main control chip of master machine passes through multichannel
Electronic switch is connected to the filter circuit of multichannel.
Master machine can connect multiple transmitting terminals simultaneously and carry out Time-sharing control, based on a kind of netting twine described in above-described embodiment
The method for transmitting audio-video signal and serial signal, it is as follows to make further supplement, method：
Master machine can connect multiple transmitting terminals by a plurality of netting twine, and transmitting terminal is controlled, and master machine passes through master
The transmitting terminal of chip selection control is controlled, and usb signal and control signal are transferred to transmitting terminal, corresponding transmitting terminal is by audio frequency and video
Signal is by network cable transmission to master machine, and final output is shown to display.
Certainly, the preferred embodiment of the utility model is these are only, use range of the present utility model is not limited with this,
Therefore it is every made in the utility model principle it is equivalent change should be included in the scope of protection of the utility model.
Claims (4)
1. the transmission equipment of a kind of network cable transmission audio-video signal and serial signal, including：Master machine, netting twine and transmitting terminal, its
It is characterised by：
Master machine is provided with audio-video interface, USB interface, cable interface and control interface, and audio-video interface connects display,
USB interface connects USB device, the external control device of control interface；
Transmitting terminal is provided with audio-video interface, USB interface, and cable interface, control interface, audio-video interface to connect with USB interface
PC main frames；
Ac-coupled circuit, DC coupling circuit and filter circuit, the exchange coupling are provided with inside master machine and transmitting terminal
Close circuit, DC coupling circuit and filter circuit are respectively connected on respective cable interface, the DC coupling circuit and
Ac-coupled circuit is directly connected on cable interface, and filter circuit is connected with DC coupling circuit；
Main control chip is additionally provided with inside master machine, main control chip passes through electronic switch, filter circuit and termination power and netting twine
Interface connects, and main control chip selects the input content of audio-video interface by controlling video switch；
Transmitting terminal is internally provided with control chip, and control chip connects USB interface, control chip passes through transmitting by USB module
Filter circuit, DC coupling circuit in end are connected to cable interface；
The filter circuit of the filter circuit of the master machine and the transmitting terminal includes respectively：2 groups of capacitor filters, 4 groups it is low
Logical and high-pass filtering circuit, the 3rd coffret and the 6th coffret of 2 groups of capacitor filter difference connected with network cable interfaces,
The 4th coffret, the 5th coffret, the 7th coffret and the 8th coffret of cable interface connect respectively one it is low
Logical and high pass filter circuit；
Master machine is connected with transmitting terminal by netting twine, the first transmission line of netting twine, the second transmission line, the 3rd transmission line, the 4th biography
Defeated line, the 5th transmission line, the 6th transmission line, the 7th transmission line and the 8th transmission line respectively with master machine and transmitting terminal cable interface
The first coffret, the second coffret, the 3rd coffret, the 4th coffret, the 5th coffret, the 6th transmission connect
Mouth, the 7th coffret and the connection of the 8th coffret.
2. the transmission equipment of a kind of network cable transmission audio-video signal according to claim 1 and serial signal, its feature exist
In：Audio frequency and video control circuit can also be set inside the transmitting terminal, audio frequency and video control circuit connection audio-video interface, and by
The control chip control of transmitting terminal；Described audio frequency and video control circuit includes audio frequency and video control signal processor and signal amplification electricity
Road.
3. the transmission equipment of a kind of the network cable transmission audio-video signal and serial signal according to claim any one of 1-2,
It is characterized in that：The master machine is provided with multiple cable interfaces, and multiple cable interfaces are respectively connected with ac-coupled circuit, direct current
Termination power and filter circuit, the main control chip of the master machine by multi-channel electronic switch be connected to multichannel filter circuit and
Termination power.
4. the transmission equipment of a kind of network cable transmission audio-video signal according to claim 3 and serial signal, its feature exist
In：The video switch connected between the master machine main control chip and audio-video interface is selection electronic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692561.1U CN207075051U (en) | 2017-06-13 | 2017-06-13 | A kind of transmission equipment of network cable transmission audio-video signal and serial signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692561.1U CN207075051U (en) | 2017-06-13 | 2017-06-13 | A kind of transmission equipment of network cable transmission audio-video signal and serial signal |
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| CN207075051U true CN207075051U (en) | 2018-03-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151363A (en) * | 2017-06-13 | 2019-01-04 | 深圳市联鸿泰电子有限公司 | A kind of method and its transmission device of network cable transmission audio-video signal and serial signal |
-
2017
- 2017-06-13 CN CN201720692561.1U patent/CN207075051U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151363A (en) * | 2017-06-13 | 2019-01-04 | 深圳市联鸿泰电子有限公司 | A kind of method and its transmission device of network cable transmission audio-video signal and serial signal |
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