CN105847726B - Signal extends device and integrated display - Google Patents
Signal extends device and integrated display Download PDFInfo
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- CN105847726B CN105847726B CN201610378168.5A CN201610378168A CN105847726B CN 105847726 B CN105847726 B CN 105847726B CN 201610378168 A CN201610378168 A CN 201610378168A CN 105847726 B CN105847726 B CN 105847726B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Dc Digital Transmission (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
This application discloses signals to extend device and integrated display, it includes sending module and receiving module that signal, which extends device, it further include two transmission lines cables being connected between the sending module and the receiving module, two transmission lines cables are independent of one another, wherein a transmission lines cable transmits power supply signal between the sending module and the receiving module, and another transmission lines cable transmits earth signal between the sending module and the receiving module.The application can transmit the power supply signal of higher power while not influencing the transmission performance of signal extension the transmitted signal of device.
Description
Technical field
This application involves network layout technologies more particularly to signal to extend device and integrated display.
Background technique
Currently, some applications need to extend to high definition computer monitor and USB peripheral user's operation distal end, it is real
Now function, it usually needs increase an extension transmitter in host computer side, and increase an extension in user's operation distal end
Receiver extends transmitter and extends connected using transmission cable between receiver.Extend transmitter receipt host computer video card
The vision signal of output, vision signal are usually that (Digital Visual Interface, digital video connect number DVI signal
Mouthful) or (High Definition Multimedia Interface, HDMI Licensing, LLC the tissue definition of HDMI signal
A kind of digitized video/audio transmission interfaces, can digital video and voice data stream with simultaneous transmission without compression).Distally
Extension receiver, externally provide connection display DVI or HDMI.
In above-mentioned framework, signal extend device realize remote power feeding when, can by extend transmitter and extend receiver it
Between a transmission cable transmitted in both directions power supply signal and earth signal, realize remote power feeding.
But above-mentioned remote power feeding mode is big to the power limit of power supply signal, can only transmit the power supply letter of lower-wattage
Number, it is unable to satisfy high-power power demands.
Summary of the invention
The application provides signal and extends device and integrated display, right in a manner of remote power feeding in the prior art to solve
The power limit of power supply signal is big, can only transmit the power supply signal of lower-wattage, is unable to satisfy asking for high-power power demands
Topic.
According to the embodiment of the present application in a first aspect, providing a kind of signal extends device, including sending module and receive mould
Block further includes two transmission lines cables being connected between the sending module and the receiving module, and two transmission lines cables are each other
It is independent, wherein a transmission lines cable transmits power supply signal, another transmission between the sending module and the receiving module
Cable transmits earth signal between the sending module and the receiving module.
In one embodiment, at least one signal occupies alone the one of transmission cable in the power supply signal and earth signal
Core is transmitted.
In one embodiment, the signal of at least one transmission cable transmission further includes two-forty signal, the high-speed
Signal is transmitted with differential signalling form；
At least one signal is multiplexed into as common-mode signal and the two-forty signal in the power supply signal and earth signal
Difference common-mode signal.
In one embodiment, the two-forty signal includes multi-media signal, and the multi-media signal includes following
It is a kind of: HDMI signal, DVI signal, DP signal；
A signal and the multi-media signal in the power supply signal and earth signal are multiplexed into difference common-mode signal.
In one embodiment, the two-forty signal further includes high speed USB signal, and the high speed USB signal includes
USB2.0 signal；The high speed USB signal is transmitted from the multi-media signal by different transmission cables；
A signal and the high speed USB signal multiplexing in the power supply signal and the earth signal are believed at difference common mode
Number transmission occupies alone a pair of of core transmission.
In one embodiment, the sending module or the receiving module include USB2.0 signal conversion unit, are used for
USB1.0 signal is converted into USB2.0 signal, or USB2.0 signal is converted into USB1.0 signal.
In one embodiment, the sending module and the receiving module respectively include a USB2.0 extension control
Device, the USB2.0 extend controller and connect with the USB2.0 signal conversion unit, balanced for carrying out to USB2.0 signal
Amplification and driving enhancing.
In one embodiment, the core quantity for transmitting the transmission cable of the high speed USB signal is at least 2；Transmission
The core quantity of the transmission cable of the multi-media signal is at least 8.
In one embodiment, the sending module or the receiving module include difference common mode frequency division multiplexing network, are used
Transmission is issued after the power supply signal or the earth signal and the two-forty signal are multiplexed into the difference common-mode signal
Cable, or the difference common-mode signal received by transmission cable is demultiplexed.
In one embodiment, the sending module further includes host power supply interface, the host power supply interface and host
Power supply connection, the DC power signal for exporting host power supply are input to the transmission cable of transmission power supply signal.
In one embodiment, the sending module further includes protection circuit, and the protection circuit is set to the host
Between power interface and the difference common mode frequency division multiplexing network；
The protection circuit includes one of following circuits or a variety of:
Overvoltage crowbar, under-voltage protecting circuit, current foldback circuit and intersection line sequence protect circuit.
In one embodiment, the signal for transmitting the transmission cable transmission of the multi-media signal further includes low rate letter
Number, the low-rate signal is multiplexed into difference common-mode signal as common-mode signal and the multi-media signal；
The sending module and the receiving module respectively further comprise a common-mode signal and drive/receive circuit, and two altogether
Mould signal drive/receive circuit be sent to for sending module described in one-way conduction the receiving module low-rate signal the
Receiving module described in one common mode half-duplex channel or one-way conduction is sent to the second common mode of the low-rate signal of the sending module
Half-duplex channel.
In one embodiment, the sending module further includes the first processing circuit, for carrying out group to low-rate signal
Frame, and the low-rate signal after framing is issued into the first common mode half-duplex channel, or will be from the second common mode half-duplex channel
Low-rate signal after the framing received carries out frame decoding；
The receiving module further includes second processing circuit, the framing for will receive from the first common mode half-duplex channel
Low-rate signal afterwards carries out frame decoding, or issues the second common mode half-duplex channel after low-rate signal is carried out framing.
In one embodiment, it includes low-rate signal transmitting line, low rate that the common-mode signal, which drives/receive circuit,
Signal receiving circuit and analog switch；
The public input/output end port of the analog switch is total to the first common mode half-duplex channel and described second respectively
The connection of mould half-duplex channel, signal input part are connect with the output end of the low-rate signal transmitting line, signal output end and institute
State the input terminal connection that low-rate signal receives circuit；
The input terminal of the low-rate signal transmitting line and the low-rate signal receive the output end of circuit respectively with
First processing circuit or the second processing circuit connection.
In one embodiment, the receiving module further includes voltage conversion circuit, for carrying out voltage to power supply signal
Conversion, generates and is powered the power supply signal of the voltage matches of equipment.
In one embodiment, every transmission lines cable includes being located at outermost restrictive coating, and the restrictive coating passes through thin layer
Gluing connection, the thin layer and the restrictive coating are integrally formed.
According to the another aspect of the embodiment of the present application, a kind of integrated display, including monitor body and support are provided
Portion, it further includes above-described connect inside the monitor body that the monitor body inside, which includes display circuit module,
Module is received, the receiving module further includes multi-media signal output interface and power supply signal output interface；
The monitor body or the support portion include two cable interfaces, and the receiving module passes through two electricity respectively
Cable interface is connect with the first transmission line cable and the second transmission line cable；
The display circuit module includes multi-media signal interface, is connected with the multi-media signal output interface；
The monitor body or the support portion further include power interface, be connected to the power supply signal output interface with
Between the display circuit module.
The signal of the application extends device and transmits power supply signal and earth signal respectively by two different transmission cables, can
To transmit the power supply signal of higher power while not influencing the transmission performance of signal extension the transmitted signal of device.
By the integrated display of the application, integrated display no longer needs independently installed extension receiver and display
Device, difficulty of construction substantially reduce.All peripheral hardware cables can connect to placing on integrated display desktop, and integration is shown
The included all kinds of interfaces of device and key can be placed in the monitor body or support portion of integrated display, and connection becomes very simple
It is single, and operate and safeguard convenient for routine use, it can also save power supply adaptor, device housings and the HDMI/ for extending receiver
DVI cable, can effectively reduce cost.
Detailed description of the invention
Fig. 1 is one embodiment block diagram that the application signal extends device；
Fig. 2 a is another embodiment block diagram that the application signal extends device；
Fig. 2 b is another embodiment block diagram that the application signal extends device；
Fig. 3 is that the common-mode signal of the application signal extension device drives/receive one embodiment circuit structure diagram of circuit；
Fig. 4 is one embodiment electricity for first/third difference common mode frequency division multiplexing network that the application signal extends device
Line structure schematic diagram；
Fig. 5 is one embodiment electricity for the second/the 4th difference common mode frequency division multiplexing network that the application signal extends device
Line structure schematic diagram；
Fig. 6 is one embodiment block diagram for the sending module that the application signal extends device；
Fig. 7 is one embodiment electrical block diagram for the sending module that the application signal extends device；
Fig. 8 is one embodiment electrical block diagram for the receiving module that the application signal extends device；
Fig. 9 is one embodiment structural schematic diagram of the application integration display；
Figure 10 is one embodiment logical construction block diagram of the display circuit module of the application integration display；
Figure 11 is one embodiment appearance front view of the application integration display；
Figure 12 is one embodiment appearance rearview of the application integration display.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.
Referring to Fig. 1, Fig. 1 is one embodiment block diagram that the application signal extends device:
As shown in Figure 1, it may include sending module 10 and receiving module 20, sending module that the signal of the present embodiment, which extends device,
It is connected between 10 and receiving module 20 by first transmission line cable 30 and second transmission line cable 40, first transmission line cable 30 and second
Independently of one another, first transmission line cable 30 transmits power supply signal to transmission cable 40 between sending module 10 and receiving module 20, the
Two transmission cables 40 transmit earth signal between sending module 10 and receiving module 20.First transmission line cable 30 and second transmission line
The outermost layer of cable 40 can all have restrictive coating, mutually isolated to realize.The cable of two separation can be shown as in appearance,
The cable being connected as one by an interconnecting piece can also be shown as, such as can be connected by thin layer gluing, thin layer and shield are utilized
Jacket layer is designed to integral structure.
In order to reduce interfering with each other for signal between two transmission lines cables, in first transmission line cable 30 and second transmission line cable 40
At least one transmission cable can be twisted-pair cable.Twisted-pair cable it is more typical can be the single with multiple twisted pairs pair
Cable (for example, cable of CAT5, CAT5e, CAT6, CAT7 or similar model), each twisted pair is to may include two conducting wires.
When realizing remote power feeding, signal, which extends the power supply signal of device one end or earth signal, to be transmitted in several ways
To opposite end.For example, in some examples, if a transmission cable uploads in the first transmission cable 30 and the second transmission cable 40
Defeated signal includes two-forty signal, and two-forty signal is transmitted in the form of differential signal, then can be by power supply signal or ground
A signal in signal is combined into difference common-mode signal as common-mode signal, with two-forty signal, its in common transmitted cable
Middle a pair of core transmission.For another example if the signal transmitted on the first transmission cable 30 and the second transmission cable 40 includes height
Power supply signal and one of two-forty signal, then can be combined into difference common-mode signal by rate signal, earth signal with it is another
Kind two-forty signal is transmitted after being combined into difference common-mode signal.Certainly, earth signal or power supply signal can also occupy alone respectively
A pair of of core of the transmission cable transmits；Or one of them in earth signal or power supply signal occupies alone the transmission cable
A pair of of core transmission, another is transmitted after being combined into difference common-mode signal with two-forty signal.It is readily appreciated that, multiplexing of transmission
Mode can reduce required core quantity, advantageously reduce cost, and the mode for occupying core transmission alone can preferably be kept away
Exempt from signal interference.
Wherein, two-forty signal may include multi-media signal, and the multi-media signal may include following any: HDMI letter
Number, DVI signal, DP (DisplayPort, high-definition digital are shown) signal, a signal in the power supply signal and earth signal
Difference common-mode signal can be multiplexed into the multi-media signal.Signal source can be any possible multi-media signal source, such as:
DVD player, high definition DVD player, Blu-ray player, the set-top box of cable television, the set-top box of satellite television, computer
Deng.
In addition, two-forty signal may also include high speed USB signal, the high speed USB signal may include USB2.0 signal；If
The high speed USB signal is transmitted from the multi-media signal by different transmission cables；In the power supply signal and earth signal
A signal and the high speed USB signal multiplexing transmitted at difference common-mode signal or occupy a pair of of core alone and transmitted.
In some examples, it is not high speed USB signal that the signal of the application, which extends device received signal, but
If desired USB1.0 signal is multiplexed into difference common-mode signal, sending module 10 or receiving module 20 with power supply signal or earth signal
It may include USB2.0 signal conversion unit, for USB1.0 signal to be converted into USB2.0 signal, or USB2.0 signal converted
At USB1.0 signal.
In order to improve the remote transmittability of high speed USB signal, in one example, sending module 10 and receiving module
20, which can respectively include a USB2.0, extends controller, and the USB2.0 extends controller and the USB2.0 signal conversion unit
Connection enhances for carrying out balanced amplification and driving to USB2.0 signal.If it is USB high speed that signal, which extends device, which directly to be transmitted,
Signal, then do not need USB2.0 signal conversion unit, and USB2.0 extends controller and also do not need and USB2.0 signal conversion unit
Connection.
In one example, the core quantity for transmitting the transmission cable of the high speed USB signal is at least 2；Transmission institute
The core quantity for stating the transmission cable of multi-media signal is at least 8.
When the signal that signal extends device transmission includes power supply signal, earth signal, multi-media signal and high speed USB signal,
30 core quantity of first transmission line cable is at least 8, includes at least 8 conducting wires, and second transmission line cable 40 is at least 2, including 2
Conducting wire.If earth signal or power supply signal are transmitted with a pair of of the core for occupying the transmission cable alone respectively, the first transmission cable
30 can transmit that DVI signal, in addition two conducting wires individually transmit power supply signal with six roots of sensation individual conductor, and the second transmission cable 40 can be with
Two individual conductors transmit high speed USB signal, in addition two wire transmission earth signals.If power supply signal is compound with multi-media signal
At difference common-mode signal, earth signal transmits after being combined into difference common-mode signal with high speed USB signal, can be by the first transmission cable 30
Four twisted pairs to four the first differential mode channels for transmitting a pair of of multi-media signal respectively are formed, by any first differential mode channel
Two conducting wires formed transmission power supply signal common mode duplex channel, can be by a twisted pair of the second transmission cable 30 to formation
The the second differential mode channel for transmitting a pair of of high speed USB signal will form two, the second differential mode channel conducting wire and form transmission earth signal
Common mode duplex channel.
As seen from the above embodiment, the signal of the application extends device, and power supply signal and earth signal is different at two
It is transmitted on transmission cable, the circuit electromagnetic field that can be formed to avoid power supply signal and earth signal when transmitting on same cable is right
The interference of the multi-media signal or usb signal that are transmitted on the cable, and the power of power supply signal is higher, is formed by circuit
Electromagnetic field is bigger to the interference of the multi-media signal or usb signal that transmit on cable.It separates and is transmitted on two different cables
Power supply signal and earth signal avoid the interference of circuit electromagnetic field, when transmitting high-power power supply signal, to multi-media signal and
The interference of usb signal accordingly reduces.Therefore, the application can be in the transmission performance for not influencing signal extension the transmitted signal of device
While, transmit the power supply signal of higher power.
In order to which at least one signal in the power supply signal and the earth signal and the two-forty signal are multiplexed into difference
Divide common-mode signal, sending module 10 and receiving module 20 may include difference common mode frequency division multiplexing network, for believing the power supply
Number or the earth signal and the two-forty signal be multiplexed into the difference common-mode signal after issue the first transmission cable 30 or the
Two transmission cables, or the difference common-mode signal solution that will be received by first transmission cable 30 or the second transmission cable 40
Multiplexing.Fig. 2 a specifically is please referred to, for Fig. 2 a for the ease of illustrating, first transmission line cable 130 is eight core twisted-pair cables, including
Four twisted wires pair, are used for transmission power supply signal and multi-media signal；Second transmission line cable 140 is two core twisted-pair cables, including
One twisted wire pair, is used for transmission high speed USB signal and earth signal.And the strand of first transmission line cable 130 and second transmission line cable 140
Line pair count is not limited to number exemplified by the present embodiment attached drawing 2a, in other embodiments, can be according to multi-media signal
Change with the transmission demand of usb signal, first transmission line cable 130 can transmit power supply signal and high speed in a manner of frequency division multiplexing
Usb signal, second transmission line cable 140 can transmit earth signal and multi-media signal in a manner of frequency division multiplexing.
As shown in Figure 2 a, the present embodiment signal extend device may include sending module 110, receiving module 120 and that
This independent first transmission line cable 130 and second transmission line cable 140, first transmission line cable 130 and second transmission line cable 140 are distinguished
It is used for transmission power supply signal and earth signal.Sending module 110 may include that the first difference common mode frequency division multiplexing network 111 and second is poor
Divide common mode frequency division multiplexing network 112；Receiving module 120 may include third difference common mode frequency division multiplexing network 121 and the 4th difference
Common mode frequency division multiplexing network 122.
As can be seen that the first difference common mode frequency division multiplexing network 111 and third difference common mode frequency division multiplexing net from Fig. 2 a
Network 121 forms a first differential mode channel (D11/D12/D13/D14) by each pair of twisted pair of first transmission line cable 130, with
And the first common mode duplex channel is formed to (forming two conducting wires of D11 in figure) by the first twisted pair of first transmission line cable
A pair of of multi-media signal, the first common mode duplex channel X1 transmission are transmitted in X1, each first differential mode channel (D11/D12/D13/D14)
Power supply signal；Second difference common mode frequency division multiplexing network 112 and the 4th difference common mode frequency division multiplexing network 122 pass through the second transmission
A pair of of twisted pair of cable 140 forms the second differential mode channel D21, and by a twisted wire of second transmission line cable 140 to (figure
Middle two conducting wires for forming D21) form second a pair of of high speed USB letter of common mode duplex channel X2, the second differential mode channel D21 transmission
Number, the second common mode duplex channel X2 transmits earth signal.The power supply signal transmitted can by with sending module 110 or receiving module
The power supply adaptor of 120 connections provides, and can also be provided by the power supply in multi-media signal source.
The present embodiment can extend device in signal by the first common mode duplex channel X1 and the second common mode duplex channel X2 will
Signal is realized while extending to distal end to the remote power feeding of receiving module 120, multimedia signal reception equipment, is not influencing to believe
While number extending the transmission performance of the transmitted signal of device, except the power supply signal for transmitting higher power, it can also save and be supplied
The external power supply adapter of electric equipment or the installation of wiring board, and the transmission cable of the present embodiment is than the cable size of double cables
It is small, it can effectively reduce the diameter of transmission cable, and then reduce installation cost and wiring difficulty.
The voltage of the power supply signal transmitted generally can be 48V or 36V, in order to be powered voltage matches needed for equipment,
In one example, receiving module 120 may also include voltage conversion circuit, the voltage conversion circuit and third difference common mode frequency
Divide multiplexed network 121 to connect, for carrying out voltage conversion to power supply signal, generates and be powered the power supply of the voltage matches of equipment
Signal.For example, the voltage of power supply signal can be converted to the DC voltage of 12V, 9V by voltage conversion circuit, be output to display,
Display master control borad and backlight.
Often there is a situation where packet lost by corruption or clock jitters during the long distance transmission of transmission cable, can be to signal
Quality damages, if receiving module 120 improves signal quality, in one example, receiving module 120 may also include
HDMI equalizer amplifier and HDMI clock and data recovery and shake removal circuit, the HDMI equalizer amplifier and third difference are total
Mould frequency division multiplexing network 121 connects, and the multi-media signal for exporting to third difference common mode frequency division multiplexing network 121 carries out equal
Weighing apparatus amplifies and restores its waveform；The HDMI clock and data recovery and shake removal circuit and the HDMI equalizer amplifier connect
It connects, for eliminating multi-media signal internal clock or data dithering (caused by long distance transmission), improves the letter that multimedia proposes data
Number quality.
In order to improve the transmission quality of multi-media signal, in another example, sending module 110 may also include HDMI drive
Dynamic circuit, the HDMI driving circuit are connect with the first difference common mode frequency division multiplexing network 111, for carrying out to multi-media signal
Shaping and current amplifying process, and multi-media signal is input to the first difference common mode frequency division multiplexing network 111 by treated, it can
Improve the driving capability of connection transmission cable.General-purpose device or circuit can be used in each comprising modules that signal extends device, can have
Effect reduces installation cost and improves the stability of signal transmission, can support the up to multi-media signal of 1080P 60Hz resolution ratio
Reliable long distance transmission.
As an example, in one example, sending module 110 (can be by the first multi-media signal interface
HDMI or DVI) connection computer display card HDMI or DVI, obtain video card output vision signal, pass through the first USB interface connect
2.0 interface of USB of host is connect, USB2.0 signal is received.Receiving module 120 can by the second multi-media signal interface (such as
HDMI or DVI) connection high-clear display can also include multiple secondary USB interfaces to connect peripheral hardware, such as be respectively intended to access
Mouse, keyboard, USB flash disk, earphone, the USB2.0 interface of the peripheral hardwares such as camera can also provide and the PS/2 interface of USB2.0 supported to connect
Enter PS/2 keyboard or mouse, earphone microphone interface is used to access simulation earphone, microphone.
The signal of the application extends device on transmission cable except transmission multi-media signal, usb signal, power supply signal and ground
Except signal, can also transmit low-rate signal, sending module 110 to the low-rate signal that receiving module 120 is sent may be CEC
One of signal and IR signal or multi-signal；Receiving module 120 may be to the low-rate signal that sending module 110 is sent
CEC (Consumer Electronic Control) signal, HPD (Hot Plug Detect) signal, DDC (Display
Data Channel) one of signal and IR signal or multi-signal, the low-rate signal as common-mode signal with it is described
Multi-media signal is multiplexed into difference common-mode signal, and sending module 110 and receiving module 120 can also respectively include a common-mode signal
Driving/reception circuit, specifically sees Fig. 2 b.
As shown in Figure 2 b, it may include sending module 110, receiving module 120 and phase that the signal of the present embodiment, which extends device,
Mutual independent first transmission line cable 130 and second transmission line cable 140, first transmission line cable 130 and second transmission line cable 140 are distinguished
It is connected between sending module 110 and receiving module 120.Sending module 110 may include the first difference common mode frequency division multiplexing network
111, the second difference common mode frequency division multiplexing network 112 and the first common-mode signal drive/receive circuit 113, and receiving module 120 can wrap
Include third difference common mode frequency division multiplexing network 121 and the 4th difference common mode frequency division multiplexing network 122 and the second common-mode signal driving/
Receive circuit 123.
As can be seen that the first difference common mode frequency division multiplexing network 111 and third difference common mode frequency division multiplexing net from Fig. 2 b
Network 121 is unidirectional to (forming two conducting wires of D13 in figure) first common mode of formation by the second twisted pair of first transmission line cable 130
Channel J1, the first common mode half-duplex channel J1 transmission sending module 110 are sent to the low-rate signal of receiving module 120；First is poor
Divide common mode frequency division multiplexing network 111 and third difference common mode frequency division multiplexing network 121 double by the third of first transmission line cable 130
Twisted wire forms the second common mode half-duplex channel J2 to (forming two conducting wires of D14 in figure), and the transmission of the second common mode half-duplex channel receives
Module 120 is sent to the low-rate signal of sending module 110.
In figure sending module 110 to the low-rate signal that receiving module 120 is sent enter common-mode signal drive/receive circuit
113, common-mode signal drives/receives circuit 113 that the first common mode half-duplex channel J1 is connected；First difference common mode frequency division multiplexing network
111 by the low-rate signal that receiving module 120 is sent be sent to common-mode signal drive/receive circuit 113 when, common-mode signal drive
It is dynamic/to receive second common mode half-duplex channel J2 of the conducting of circuit 113.
Common-mode signal drives/receives circuit 123 to receive low-rate signal from third difference common mode frequency division multiplexing network 121
When, the first common mode half-duplex channel J1 is connected；Receiving module 120 enters common mode letter to the low-rate signal that sending module 110 is sent
Number driving/reception circuit 123, common-mode signal drive/receive circuit 123 that the second common mode half-duplex channel J2 is connected.
In one example, sending module 110 may also include the first processing circuit, for carrying out group to low-rate signal
Frame, and the low-rate signal after framing is issued into the first common mode half-duplex channel J1, or will receive from the second common mode half-duplex channel J2
Framing after low-rate signal carry out frame decoding；Receiving module 120 further includes second processing circuit, and being used for will be from the first common mode list
Low-rate signal after the framing received to channel J1 carries out frame decoding, or issues the second common mode after low-rate signal is carried out framing
Half-duplex channel J2.Processing circuit can have the processor of operational capability to realize by MCU etc..
In one example, sending module 110 may also include host control terminal, the working condition control for receiving host
Signal processed is simultaneously sent to the first processing circuit progress framing package, and issues the first difference common mode frequency as low-rate signal
Divide multiplexed network 111；Receiving module 120 may also include desktop switch interface, for connecting for showing the aobvious of multi-media signal
The desktop of showing device switchs, and receives the working state control signal after the second processing circuit is unpacked, and notify the desktop
Switch.The working state control signal can include: switching on and shutting down signal, reset signal and disk read-write indicate one in modulating signal
Kind or multi-signal.The host control terminal includes one or more of interface and the corresponding terminal connecting of mainboard:
Switching on and shutting down signaling interface, reset signal interface and disk read-write indicator light signaling interface.
As can be seen from the above embodiments, the difference common mode frequency division multiplexing network implementations common mode channel signal and differential mode of the application are logical
Road signal it is mutually isolated, avoid interfering with each other between signal.HDMI/DVI digital video inside sending module and receiving module
Signal transmitting and receiving chain road is multiplexed multiple low speed control signals transmission channels, realizes simultaneously in transmission HDMI/DVI digital video signal
DDC, HPD, computer on-off, the states such as computer reset and disk read-write indicator light and control signal are transmitted, can effectively ensure that remote
Hold the EDID (Extended Display Identification Data) and HDCP of high definition computer monitor and computer display card
(High-bandwidth Digital Content Protection) information exchange effectively solves video card and display video
Signal compatibility problem.
In another example, common-mode signal drives/receives the circuit structure of circuit 113/123 as shown in Figure 3, it may include
Low-rate signal transmitting line 310, low-rate signal receive circuit 320 and analog switch 330.The public input of analog switch/
Output port and first/third difference common mode frequency division multiplexing, which are connected to the network, (to be realized and the first common mode half-duplex channel and described
The connection of second common mode half-duplex channel), signal input part is connect with the output end of low-rate signal transmitting line 310, signal output
The input terminal for receiving circuit 320 with low-rate signal is held to connect；The input terminal and low rate of low-rate signal transmitting line 310 are believed
Number receive circuit 320 output end connect respectively with first/second processing circuit.
In another example, the circuit structure of first/third difference common mode frequency division multiplexing network is as shown in figure 4, can wrap
Four differential coupling channel circuits 410 and four common mode coupling circuit 420 are included, the series winding of differential coupling channel circuit 410 is connected to one
To upper, two output ends of common mode coupling circuit 420 are connect with two conducting wires of a twisted wire pair twisted wire respectively.Four differences can be formed
Mould channel and four common mode channels, four differential mode channels can transmit respectively 3 couples of HDMI signal TMDS D0_2, TMDS D1_2,
TMDS D2_2 and 1 couple of clock signal TMDS CLK_2；Four common mode channel transfer power supply signals, low-rate signals.
In another example, the circuit structure of the second/the 4th difference common mode frequency division multiplexing network is as shown in figure 5, can wrap
A differential coupling channel circuit 510 and a common mode coupling circuit 520 are included, the series winding of differential coupling channel circuit 510 is connected to one
To upper, two output ends of common mode coupling circuit 520 are connect with two conducting wires of a twisted wire pair twisted wire respectively.It is high that transmission can be formed
The differential mode channel of fast usb signal and the common mode channel of transmission earth signal.
The signal of the application, which extends the received power supply signal of device institute, to be provided by host power supply, and host power supply is meeting master
To the output of signal extension device, DC power signal, sending module may include that host power supply connects all the way while machine power demands
Mouthful, the host power supply interface is connect with host power supply, and the DC power signal for exporting host power supply is input to transmission
The transmission cable of power supply signal.Referring specifically to Fig. 6, as shown in fig. 6, the sending module 610 of the present embodiment may include first poor
Divide common mode frequency division multiplexing network 611, the second difference common mode frequency division multiplexing network 612 and host power supply interface 613, host power supply connects
Mouth 613 is connect with the first difference common mode frequency division multiplexing network 611 and host power supply respectively, the direct current for exporting host power supply
Power supply signal is input to the first difference common mode frequency division multiplexing network 611.
By host power supply export DC power signal, realize remote power feeding, can save distal end receiving module and more matchmakers
The power supply adaptor of body signal receiver (such as display) can reduce installation cost, the cable amount for reducing deployment, beautification wiring
Environment.The voltage that host power supply interface 613 can receive host power supply offer is the power supply signal of 48V, 36V.
In one example, sending module 610 may also include protection circuit 614, and protection circuit 614 is connected to host power supply
Between interface 613 and the first difference common mode frequency division multiplexing network 611.
In another example, protection circuit 614 may include one of following circuits or a variety of:
Overvoltage crowbar, under-voltage protecting circuit, current foldback circuit and intersection line sequence protect circuit.
In other embodiments, power supply signal can be mentioned by the external power adapter connecting with sending module or receiving module
For.
The circuit structure that the application signal extends the sending module of device sees Fig. 7, and Fig. 7 is that the application signal extends dress
One embodiment structural schematic diagram for the sending module set:
As shown in fig. 7, sending module may include protection circuit 715, the first processing circuit 716, the first common-mode signal driving/
Receive circuit 717, sequentially connected first multi-media signal interface 711, HDMI driving circuit 712, the first difference common mode frequency division
Multiplexed network 713 and the first cable interface 714 and sequentially connected first usb signal interface 718, USB2.0 signal extend
Controller 719, the second difference common mode frequency division multiplexing network 720 and the second cable interface 721；Protection circuit 715 is connected to power supply
Between the signal source of signal and the first difference common mode frequency division multiplexing network 713, the first processing circuit 716 respectively with the first multimedia
Signaling interface 711, the first common-mode signal drive/receive circuit 717 and USB2.0 signal to extend controller 719 and connect, for pair
Low-rate signal carries out framing.
First multi-media signal interface 711 is HDMI/DVI interface；First usb signal interface 718 is usb signal interface；
First cable interface 714 can be 8P8C socket；Second cable interface 721 can be 6P4C or 6P2C socket.
The HDMI driving circuit 712 connecting with the first multi-media signal interface 711 carries out shaping and electricity to multi-media signal
Enhanced processing is flowed, the driving capability of connection transmission cable is improved.
2.0 signal of USB that connect with the first usb signal interface 718 extends controller 719, for USB2.0 signal into
The balanced amplification of row and driving enhancing.
In an example, sending module may also include host power switch/reset/status lamp terminal, the first processing circuit
716 extend power switch/reset/shape of controller 719, host with the first multi-media signal interface 711, USB2.0 signal respectively
State lamp interface connection, will it is related with host switch and status signal (i.e. working state control signal) and HDMI/DVI it is related
DDC and the processing of HPD signal (i.e. high rate video display control signal) framing package manage each module configuration and state collection,
A control signal path is established by difference common mode frequency division multiplexing network to communicate with receiving module.
The circuit structure that the application signal extends the receiving module of device sees Fig. 8, and Fig. 8 is that the application signal extends dress
One embodiment structural schematic diagram for the receiving module set, in this application example, receiving module may include third cable interface
811, third difference common mode frequency division multiplexing network 812, HDMI equalizer amplifier 813, HDMI clock and data recovery and shake removal
Circuit 814, the second multi-media signal interface 815, the second common-mode signal drive/receive circuit 816, second processing circuit 817, electricity
Voltage conversion circuit 818, the 4th cable interface 819, the 4th difference common mode frequency division multiplexing network 820, the 2nd USB2.0 extend control
Device 821 and the second usb signal interface 822.Third cable interface 811, third difference common mode frequency division multiplexing network 812, HDMI are equal
Balanced amplifier 813, HDMI clock and data recovery and shake removal circuit 814 and the second multi-media signal interface 815 are sequentially connected；
Second common-mode signal drives/receives circuit 816 to connect with third difference common mode frequency division multiplexing network 812, second processing circuit 817
It is connected to the second common-mode signal to drive/receive between circuit 816 and the second multi-media signal interface 815, voltage conversion circuit 818
It is connect with third difference common mode frequency division multiplexing network 812, the matched power supply signal of demand voltage of output and display, the 4th line
Cable interface 819, the 4th difference common mode frequency division multiplexing network 820, the 2nd USB2.0 extend controller 821 and the second usb signal connects
Mouth 822 is sequentially connected.
Third cable interface 811 can be 8P8C socket；4th cable interface 819 can be 6P4C or 6P2C socket；More than second
Media signal interface 815 is HDMI/DVI interface；Second usb signal interface 822 is USB interface, can connect USB peripheral and USB
Sound card, USB sound card lug machine and headset.
HDMI equalizer amplifier 813 restores after too long line extends transmission for carrying out balanced amplification to TMDS signal
TMDS waveform supports adaptive automatic equalization.
HDMI clock and data recovery and shake removal circuit 814, for eliminating because of long distance transmission bring clock or number
According to shake, output TMDS signal quality is improved.
2nd USB 2.0 extends controller 821, enhances for carrying out balanced amplification and driving to USB2.0 signal.
USB sound card is receiving module internal USB sound card circuit, and USB sound card hangs over the extension of receiving unit USB2.0 hub
Under port, host computer audio input and output can be provided for user in distal end by USB transmission cable.Sound card circuit tool
There are audio CODEC and DAC, is subjected to analog audio input and output.
Second processing circuit 817 can unpack the control signal (low-rate signal) after package for the related DDC of HDMI/DVI
And HPD signal, desktop switch input/output switching and status information, DDC and HPD signal are issued into HDMI/DVI interface, by table
Face switch input/output switching and status information issue desktop switch interface.
The signal of the application extends device, and after transferring signals to receiving module by transmission cable, receiving module will be believed
It number is transferred to signal receiver, common signal receiver is display, and display and receiving module are usually two
Autonomous device is connected by DVI or HDMI cable.In order to simplify the cable connection between display and receiving module and be convenient for day
It is often used operation and maintenance, receiving module can be placed in the shell of display, is the application integration referring particularly to Fig. 9, Fig. 9
One embodiment structural schematic diagram of display:
As shown in figure 9, integrated display may include monitor body 910 and support portion 920, monitor body 910 is logical
Front housing and rear shell are crossed, display circuit module 940 and receiving module 930 are encapsulated in inside monitor body 910.Receiving module
930 structure can as Fig. 1 into Fig. 8 it is any shown in, receive sending module send signal, complete signal extend device receiving end
Function, may also include multi-media signal output interface and power supply signal output interface.
Monitor body 910 includes two cable interfaces 950, receiving module 930 respectively by two cable interfaces 950 with
Above-described first transmission line cable is connected with second transmission line cable.
The various functions relevant to display of the realization display of display circuit module 940, it may include multi-media signal connects
Mouthful, it is connected with the multi-media signal output interface, to receive the vision signals such as DVI, HDMI.
Monitor body 910 may include power interface 960, be connected to the power supply signal output interface and display circuit
Between module 940.For obtaining the power supply signal of the output of receiving module 930, power for display circuit module 940.It is received
The voltage of power supply signal can be 12V, 9V.
In order to receive usb signal, support portion 920 may also include external interface, can be defeated with the usb signal of receiving module 930
Outgoing interface connection.Display sheet 910 may include external interface in other embodiments.
External interface is to status signal required for transmitting and the various peripheral hardwares of access etc..Status signal may include with
The related signal of desktop switching function, such as computer mainframe switch machine signal reset Restart Signal, computer host power supply booting shape
State indication signal and signal extend device video state indication signal and USB condition indicative signal.Usb signal state, can be with
Refer to whether the usb signal state for extending device transmission by signal is normal, and signal extends the usb signal and video of device transmission
Signal can be independent primary and secondary twisted pair physical media, and sub-line (second transmission line cable) RJ12 interface transmits USB2.0 letter
Number, bus (first transmission line cable) RJ45 interface transmits HDMI video signal.
In one example, integrated display may also include the second external interface, the second external interface may include to
Few one kind is with lower interface: remote host power switch button interface restarts bonded mouth, and host power supply open state indicator light connects
Mouthful, video connection status indicator lamp interface, extender usb signal status indicator lamp interface, PS/2 interface, earphone microphone interface.
In another example, it is contemplated that reinforce Anti-interference Design, signal can be extended where the receiving module 930 of device
Wiring board use metallic shield, the winding displacement and multi-media signal interface of the various interfaces of connection in monitor body 910
Line is both needed to consider its signal integrity and shielding isolation design.
In other embodiments, cable interface and external interface can be designed according to the different demands of designer in display
On ontology 910 or support portion 920.For example, the front housing of integrated display can be placed according to appearance and Structural Design Requirement,
The positions such as rear shell or support portion 920.
One embodiment internal logic of the display circuit module of the integrated display of the application is as shown in Figure 10, shows
Show device circuit module 1010 may include power module 1011, backlight 1012, display screen 1013, driving plate 1014, display by
Keypad 1015 and the two-in-one plate 1016 of power supply backlight, power module 1011 are located on the two-in-one plate 1016 of power supply backlight.Display screen
1013 connect with backlight 1012 and driving plate 1014 respectively, and driving plate 1014 connects display keypad 1015 simultaneously, pass through
With receiving module 930 or PERCOM peripheral communication, the display function of display circuit module is realized.
Figure 11 and Figure 12 is one embodiment appearance front view and appearance effect of the application integration display respectively
Fruit rearview:
Support portion 920 in Fig. 9 shows as pedestal in Figure 11, and the second Peripheral Interface shows in hardware and provides figure in form
Shown in various interface functions.It is defeated for connecting earphone and microphone voice input that earphone interface is reserved on pedestal
Out, five USB interfaces are for accessing USB2.0 peripheral hardware, and PS/2 interface is for connecting keyboard and mouse.Three status lamps indicate respectively
The video connection status of receiving module 930, usb signal state and remote host power supply open state.It can from Figure 12 rearview
To find out, the DVI usually having in rear shell 1013 except display in the prior art outside USB interface, also adds power supply and connects
Mouthful, RJ11 and RJ45 mouthful be used as cable interface, power interface is used to obtain the power supply signal of the output of receiving module 930, RJ11 with
RJ45 mouthfuls for connecting transmission cable.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the application
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (17)
1. a kind of signal extends device, including sending module and receiving module, it is used for transmission to extended signal, feature exists
In further including two transmission lines cables being connected between the sending module and the receiving module, two transmission lines cables are each other
It is independent, wherein a transmission lines cable transmits power supply signal, another transmission between the sending module and the receiving module
Cable transmits earth signal between the sending module and the receiving module.
2. signal according to claim 1 extends device, which is characterized in that at least one in the power supply signal and earth signal
A signal occupies alone a pair of of core transmission of transmission cable.
3. signal according to claim 1 extends device, which is characterized in that the signal of at least one transmission cable transmission is also
Including two-forty signal, the two-forty signal is transmitted with differential signalling form；
At least one signal is multiplexed into difference as common-mode signal and the two-forty signal in the power supply signal and earth signal
Common-mode signal.
4. signal according to claim 3 extends device, which is characterized in that the two-forty signal includes multimedia letter
Number, the multi-media signal includes following any: HDMI signal, DVI signal, DP signal；
A signal and the multi-media signal in the power supply signal and earth signal are multiplexed into difference common-mode signal.
5. signal according to claim 4 extends device, which is characterized in that the two-forty signal further includes high speed USB
Signal, the high speed USB signal include USB2.0 signal；The high speed USB signal passes through different from the multi-media signal
Transmission cable transmission；
A signal and the high speed USB signal multiplexing in the power supply signal and the earth signal are passed at difference common-mode signal
Defeated or a pair of of core transmission of occupancy alone.
6. signal according to claim 5 extends device, which is characterized in that the sending module or the receiving module packet
USB2.0 signal conversion unit is included, for USB1.0 signal to be converted into USB2.0 signal, or USB2.0 signal is converted into
USB1.0 signal.
7. signal according to claim 6 extends device, which is characterized in that the sending module and the receiving module point
Not Bao Kuo USB2.0 extend controller, the USB2.0 extends controller and connect with the USB2.0 signal conversion unit,
Enhance for carrying out balanced amplification and driving to USB2.0 signal.
8. signal according to claim 5 extends device, which is characterized in that transmit the transmission line of the high speed USB signal
The core quantity of cable is at least 2；The core quantity for transmitting the transmission cable of the multi-media signal is at least 8.
9. signal according to claim 3 extends device, which is characterized in that the sending module and the receiving module packet
Difference common mode frequency division multiplexing network is included, for the power supply signal or the earth signal and the two-forty signal to be multiplexed into institute
Transmission cable is issued after stating difference common-mode signal, or the difference common-mode signal received by transmission cable is demultiplexed.
10. signal according to claim 9 extends device, which is characterized in that the sending module further includes host power supply
Interface, the host power supply interface are connect with host power supply, and the DC power signal for exporting host power supply is input to biography
The transmission cable of transmission of electricity source signal.
11. signal according to claim 10 extends device, which is characterized in that the sending module further includes protection electricity
Road, the protection circuit are set between the host power supply interface and the difference common mode frequency division multiplexing network；
The protection circuit includes one of following circuits or a variety of:
Overvoltage crowbar, under-voltage protecting circuit, current foldback circuit and intersection line sequence protect circuit.
12. signal according to claim 4 extends device, which is characterized in that transmit the transmission line of the multi-media signal
The signal of cable transmission further includes low-rate signal, and the low-rate signal is multiplexed into as common-mode signal and the multi-media signal
Difference common-mode signal；
The sending module and the receiving module respectively further comprise a common-mode signal and drive/receive circuit, two common mode letters
Number driving/reception circuit for sending module described in one-way conduction be sent to the receiving module low-rate signal it is first total
The second common mode that receiving module described in mould half-duplex channel or one-way conduction is sent to the low-rate signal of the sending module is unidirectional
Channel.
13. signal according to claim 12 extends device, which is characterized in that the sending module further includes the first processing
Low-rate signal after framing for carrying out framing to low-rate signal, and is issued the first common mode half-duplex channel by circuit,
Or frame decoding will be carried out from the low-rate signal after the framing that the second common mode half-duplex channel receives；
The receiving module further includes second processing circuit, for will be after the framing that the first common mode half-duplex channel receives
Low-rate signal carries out frame decoding, or issues the second common mode half-duplex channel after low-rate signal is carried out framing.
14. signal according to claim 13 extends device, which is characterized in that the common-mode signal drives/receive circuit
Circuit and analog switch are received including low-rate signal transmitting line, low-rate signal；
The public input/output end port of the analog switch respectively with the first common mode half-duplex channel and the second common mode list
Connected to channel, signal input part connect with the output end of the low-rate signal transmitting line, signal output end with it is described low
Rate signal receives the input terminal connection of circuit；
The input terminal of the low-rate signal transmitting line and the low-rate signal receive the output end of circuit respectively with it is described
First processing circuit or the second processing circuit connection.
15. signal according to claim 1 extends device, which is characterized in that the receiving module further includes voltage conversion
Circuit generates and is powered the power supply signal of the voltage matches of equipment for carrying out voltage conversion to power supply signal.
16. extending device to signal described in any one of 15 according to claim 1, which is characterized in that every transmission lines cable packet
It includes and is located at outermost restrictive coating, the restrictive coating is connected by thin layer gluing, and the thin layer and the restrictive coating are integrally formed.
17. a kind of integration display, including monitor body and support portion, the monitor body inside includes display electricity
Road module, which is characterized in that further include the reception mould as described in any one of claims 1 to 16 inside the monitor body
Block, the receiving module further include multi-media signal output interface and power supply signal output interface；
The monitor body or the support portion include two cable interfaces, and the receiving module passes through two cables respectively and connects
Mouth is connect with first transmission line cable and second transmission line cable；
The display circuit module includes multi-media signal interface, is connected with the multi-media signal output interface；
The monitor body or the support portion further include power interface, be connected to the power supply signal output interface with it is described
Between display circuit module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016102103783 | 2016-04-06 | ||
| CN201610210378 | 2016-04-06 |
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| CN201620519994.2U Withdrawn - After Issue CN205792967U (en) | 2016-04-06 | 2016-05-31 | Signal extension fixture and integration display |
| CN201610378168.5A Active CN105847726B (en) | 2016-04-06 | 2016-05-31 | Signal extends device and integrated display |
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| CN205792967U (en) * | 2016-04-06 | 2016-12-07 | 深圳市昊一源科技有限公司 | Signal extension fixture and integration display |
| CN107770102A (en) * | 2016-08-22 | 2018-03-06 | 杭州海康威视数字技术股份有限公司 | A kind of alarm post of frequency division multiplexing differential transmission signals |
| CN107124205A (en) * | 2017-06-28 | 2017-09-01 | 上海旗娱网络科技有限公司 | Method for transmitting signals, apparatus and system |
| CN110913527B (en) * | 2019-11-12 | 2022-06-21 | 上海铁大电信科技股份有限公司 | Supervision driving circuit |
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|---|---|---|---|---|
| CN101426120A (en) * | 2008-10-23 | 2009-05-06 | 宁波奥科电子技术有限公司 | Method for expanding HDMI and/or DVI interface by single Ethernet cable for long distance connection |
| CN205068361U (en) * | 2015-09-02 | 2016-03-02 | 高华伟 | Computer extender |
| CN205792967U (en) * | 2016-04-06 | 2016-12-07 | 深圳市昊一源科技有限公司 | Signal extension fixture and integration display |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090043847A (en) * | 2007-10-30 | 2009-05-07 | 강인원 | A transmitter of multimedia data |
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2016
- 2016-05-31 CN CN201620519994.2U patent/CN205792967U/en not_active Withdrawn - After Issue
- 2016-05-31 CN CN201610378168.5A patent/CN105847726B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426120A (en) * | 2008-10-23 | 2009-05-06 | 宁波奥科电子技术有限公司 | Method for expanding HDMI and/or DVI interface by single Ethernet cable for long distance connection |
| CN205068361U (en) * | 2015-09-02 | 2016-03-02 | 高华伟 | Computer extender |
| CN205792967U (en) * | 2016-04-06 | 2016-12-07 | 深圳市昊一源科技有限公司 | Signal extension fixture and integration display |
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| CN105847726A (en) | 2016-08-10 |
| CN205792967U (en) | 2016-12-07 |
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