CN104869343B - Bidirectional transmission device - Google Patents
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- CN104869343B CN104869343B CN201410445256.3A CN201410445256A CN104869343B CN 104869343 B CN104869343 B CN 104869343B CN 201410445256 A CN201410445256 A CN 201410445256A CN 104869343 B CN104869343 B CN 104869343B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 168
- 230000002457 bidirectional effect Effects 0.000 title abstract 3
- 239000004606 Fillers/Extenders Substances 0.000 claims description 27
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 8
- 235000018734 Sambucus australis Nutrition 0.000 description 6
- 244000180577 Sambucus australis Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- OGFXBIXJCWAUCH-UHFFFAOYSA-N meso-secoisolariciresinol Natural products C1=2C=C(O)C(OC)=CC=2CC(CO)C(CO)C1C1=CC=C(O)C(OC)=C1 OGFXBIXJCWAUCH-UHFFFAOYSA-N 0.000 description 6
- 230000008054 signal transmission Effects 0.000 description 4
- 230000011664 signaling Effects 0.000 description 4
- 230000005669 field effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Bidirectional Digital Transmission (AREA)
Abstract
The invention discloses a bidirectional transmission device. The bidirectional transmission device comprises a first arithmetic unit and a second arithmetic unit. The first arithmetic unit is provided with a first input end and a first output end. The second arithmetic unit is provided with a third input end, a fourth input end and a second output end. The third input terminal of the second arithmetic unit is coupled to the first input terminal of the first arithmetic unit. The fourth input terminal of the second arithmetic unit is coupled to the first output terminal of the first arithmetic unit. The fourth input end of the second arithmetic unit receives the first input signal and outputs a first output signal from the second output end thereof.
Description
Technical field
The present invention is relevant with the transmitted in both directions of signal, can especially with regard to a kind of application-specific integrated circuit for being not required to use cost higher
Realize the two-way transmission apparatus of the transmitted in both directions of half-duplex control signal.
Background technology
In general, traditional HDMI signal extenders (Extender) solve double-direction control letter using application-specific integrated circuit mostly
The problem of number can not compensating.Its shortcoming is that the cost of application-specific integrated circuit is too high, and signal compensation is fixed, less elastic.
In addition, traditional HDMI signal extenders can also pass through enabled control pin by the way of sequential (Timing) control
Position carries out the transmitting-receiving control of two-way signaling.However, because SECO is more difficult and realization is not easy, once SECO is wrong
When, the problem of signal feedback is likely to result in data latching (Latch).
The content of the invention
Therefore, the present invention proposes a kind of two-way transmission apparatus, to solve the above mentioned problem that background technology is suffered from.
A specific embodiment according to the present invention is a kind of two-way transmission apparatus.In this embodiment, two-way transmission apparatus
Include first arithmetic device and second arithmetic device.First arithmetic device has first input end and the first output end.Second arithmetic device has
There are the 3rd input, the 4th input and the second output end.The of the 3rd input coupling first arithmetic device of second arithmetic device
One input.First output end of the 4th input coupling first arithmetic device of second arithmetic device.The 4th of second arithmetic device is defeated
Enter end and receive the first input signal, and the first output signal is exported by its second output end.
In one embodiment, when the first input signal is inputted to second arithmetic device, the first input signal i.e. can not be simultaneously
Input to first arithmetic device.
In one embodiment, first arithmetic device also has the second input.Second input is coupled to earth terminal.
In one embodiment, the 3rd input of second arithmetic device and the 4th input are respectively that a positive input terminal and one are negative
Input, the first input signal received by the 4th input have positive voltage, the first output that the second output end is exported
Signal has negative voltage.
In one embodiment, two-way transmission apparatus further includes converting unit.Converting unit coupling second arithmetic device
Second output end, the first output signal with negative voltage is converted back into the first input signal with positive voltage and defeated
Go out.
In one embodiment, the first input signal is half-duplex control signal.
In one embodiment, half-duplex control signal be inter-integrated circuit (Inter-Integrated Circuit,
I2C) control signal, USB (Universal Serial Bus, USB) 1.1 control signals or USB
2.0 control signal.
In one embodiment, two-way transmission apparatus is applied in signal extender (extender).Signal extender includes
Delivery module, a pair of transmission lines and receiving module.This is coupled between delivery module and receiving module to transmission line.Delivery module
And two-way transmission apparatus is respectively arranged with receiving module, the converting unit of the two-way transmission apparatus of delivery module inputs first
For signal output to the wherein transmission line to transmission line, it is defeated that the two-way transmission apparatus of receiving module from the transmission line receives first
Enter signal.
In one embodiment, in the two-way transmission apparatus of receiving module, the first input end of first arithmetic device is from the biography
Defeated line receives the first input signal, and exports the first input signal by the first output end, and equally the 3rd in second arithmetic device is defeated
Enter end and receive the first input signal from the transmission line, and the first output end reception first of the 4th input from first arithmetic device is defeated
Entering signal, wherein the 3rd input of the second arithmetic device and the 4th input is respectively a positive input terminal and a negative input end,
Therefore the second output end of the second arithmetic device will not export any signal.
In one embodiment, this is to transmitting a pair of twisted-pair feeders that cable is CAT5 cables.
In one embodiment, delivery module receives the first input letter from a signal original device (such as image input device)
Number, and first input signal is reached by receiving module to a wherein transmission line for transmission line by this, for the receiving module
First input signal is exported to a signal output apparatus (such as image output device).The receiving module also can be from signal output
Device receives one second input signal, and the second input signal is reached into delivery module to another transmission line of transmission line by this
After export to the signal original device.
In one embodiment, delivery module receives the first input signal from a USB master control sets, and passes through a pair of transmission lines
A wherein transmission line first input signal is reached into receiving module, so that receiving module exports the first input signal to one
USB controlled devices.The receiving module also can receive one second input signal from USB controlled devices, and by this to transmission line
Another transmission line is exported to USB master control sets after the second input signal is reached into delivery module.
In one embodiment, two-way transmission apparatus is applied in Signal Booster (booster).Signal Booster, which includes, to be passed
Send module and receiving module.Two-way transmission apparatus, the two-way biography of delivery module are respectively arranged with delivery module and receiving module
The first input end of the first arithmetic device of the two-way transmission apparatus of the converting unit coupling receiving module of defeated device, receiving module
The first input end of the first arithmetic device of the two-way transmission apparatus of the converting unit coupling delivery module of two-way transmission apparatus.
In one embodiment, in the two-way transmission apparatus of receiving module, the first input end of first arithmetic device is right from this
A wherein transmission line for transmission line receives the first input signal and exports the first input signal, second arithmetic device by the first output end
The 3rd input receive the first input signal from the transmission line, and the 4th input is from the first of first arithmetic device the output termination
The first input signal is received, wherein the 3rd input of the second arithmetic device and the 4th input are respectively that a positive input terminal and one are negative
Input, therefore the second output end of the second arithmetic device will not export any signal.
In one embodiment, delivery module receives the first input signal from a signal original device, and receiving module is by the
One input signal is exported to a signal output apparatus, receiving module also can receive one second input signal from signal output apparatus,
And the second input signal is reached into after delivery module output to signal original device.
In one embodiment, two-way transmission apparatus further includes multiple signal compensation units, is respectively coupled to the first computing
First output end of device, and be coupled between the first input end of first arithmetic device and the 3rd input of second arithmetic device,
To carry out signal compensation.
Compared to background technology, following advantages are had according to the two-way transmission apparatus of the present invention：
(1) two-way transmission apparatus of the invention realizes the transmitted in both directions of half-duplex control signal with the framework of low cost, and
It will not be interfered during two-way signaling alternate transmission, therefore can improve background technology need to use the cost caused by application-specific integrated circuit higher
Problem.
(2) two-way transmission apparatus of the invention can be applied to have the signal of signal extender or Signal Booster transmission system
In system, the compensation mechanism of higher elasticity can be provided by setting up signal compensation unit.
(3) because the two-way transmission apparatus of the present invention is not required to operate by way of sequential (Timing) controls, can solve
In background technology when SECO is wrong the problem of data latching caused by signal feedback.
It can be obtained further by following detailed description of the invention and institute's accompanying drawings on the advantages and spirit of the present invention
Solution.
Brief description of the drawings
Fig. 1 is to illustrate the signal for being applied to signal extender according to the two-way transmission apparatus of the specific embodiment of the present invention
Figure.
Fig. 2A is to illustrate signal original device to pass the first input signal by the two-way transmission apparatus in signal extender
Deliver to the schematic diagram of signal output apparatus.
Fig. 2 B are to illustrate signal output apparatus to pass the second input signal by the two-way transmission apparatus in signal extender
Deliver to the schematic diagram of signal original device.
Fig. 2 C are to illustrate the schematic diagram that signal compensation unit is further provided with two-way transmission apparatus.
Fig. 3 is to illustrate to be applied to showing for Signal Booster according to the two-way transmission apparatus of the another specific embodiment of the present invention
It is intended to.
【Symbol description】
1、2：Signal transmission system
EXT：Signal extender
BST：Signal Booster
TX：Delivery module
RX：Receiving module
10A、10B、20A、20B：Two-way transmission apparatus
11、21：Signal original device
12、22：Signal output apparatus
S1：First input signal
S1’：First output signal
S2：Second input signal
S2’：Second output signal
100、104：First arithmetic device
102、106：Second arithmetic device
103、107：Converting unit
L1~L2：A pair of transmission lines
+：Positive input terminal
-：Negative input end
101：Signal compensation unit
K1~K4：Output end
Embodiment
A preferred embodiment according to the present invention is a kind of two-way transmission apparatus.In this embodiment, transmitted in both directions
Device can be applied in a signal extender (extender), and signal extender can be applied in a signal transmission system, but
It is not limited.Fig. 1 is refer to, Fig. 1 is the signal that the two-way transmission apparatus illustrated in this embodiment is applied to signal extender
Figure.
As shown in figure 1, in signal transmission system 1, it is defeated with signal that signal extender EXT is coupled to signal original device 11
Go out between device 12.Signal extender EXT includes delivery module TX, a pair of transmission line L1~L2 and receiving module RX.This is to passing
Defeated line L1~L2 is coupled between delivery module TX and receiving module RX.It is respectively arranged with delivery module TX and receiving module RX
Two-way transmission apparatus 10A and 10B.In this embodiment, the four pairs of multiple twins included to transmission line L1~L2 by CAT5 cables
It is any to twisted-pair feeder in line, but be not limited.
In practical application, signal original device 11 can be any device that can provide half-duplex control signal, example
If provide inter-integrated circuit (Inter-Integrated Circuit, I2C) the Image sources device of control signal is (such as
HDMI audio and video players), or USB (Universal Serial Bus, USB) 1.1 control signals can be provided
Or the USB master control sets of the control signal of USB 2.0；Signal output apparatus 12 can any can receive half-duplex
The device of control signal, such as inter-integrated circuit (I can be received2C) the image output device (such as screen) of control signal, or
It is the USB controlled devices that can receive the control signal of USB 1.1 or the control signal of USB 2.0, but
It is not limited.
Then, refer to Fig. 2A and Fig. 2 B, Fig. 2A is that the first input signal for illustrating signal original device is prolonged by signal
The two-way transmission apparatus for stretching device is transmitted to the schematic diagram of signal output apparatus；Fig. 2 B are the second inputs for illustrating signal output apparatus
Signal is transmitted to the schematic diagram of signal original device by the two-way transmission apparatus of signal extender.
As shown in Figure 2 A, in the offer of signal original device 11 first input signal S1 to delivery module TX, delivery module TX
Two-way transmission apparatus 10A can by the wherein transmission line L1 to transmission line by the first input signal S1 export to receive mould
Two-way transmission apparatus 10B in block RX, and exported the first input signal S1 to signal output apparatus by two-way transmission apparatus 10B
12。
As shown in Figure 2 B, in the offer of signal output apparatus 12 second input signal S2 to receiving module RX, receiving module RX
Two-way transmission apparatus 10B another transmission line L2 of transmission line can be exported the second input signal S2 to delivery module by this
Two-way transmission apparatus 10A in TX, and exported the second input signal S2 to signal original device by two-way transmission apparatus 10A
11。
It should be noted that due to the first input signal S1 from signal original device 11 by signal extender EXT transmit to
Signal output apparatus 12, and the second input signal S2 from signal output apparatus 12 by signal extender EXT transmit to signal come
Source device 11, that is, the first input signal S1 transmission direction is opposite with the second input signal S2 transmission direction.
In this embodiment, the first input signal S1 and the second input signal S2 are respectively provided with positive voltage, the first input signal
S1 and the second input signal S2 belong to half-duplex control signal, such as inter-integrated circuit (I2C) control signal, general serial
The control signal of bus (USB) 1.1 or the control signal of USB 2.0, but be not limited.
Next, it will describe how signal extender EXT passes through two-way transmission apparatus in detail by Fig. 2A and Fig. 2 B respectively
10A and 10B carries out the transmitted in both directions of half-duplex control signal.
As shown in Figure 2 A and 2 B, the two-way transmission apparatus 10A in delivery module TX includes first arithmetic device 100, second
Arithmetic unit 102 and converting unit 103.Wherein, first arithmetic device 100 have positive input terminal+, negative input end-and output end K1；
Second arithmetic device 102 have positive input terminal+, negative input end-and output end K2.The output end K1 of first arithmetic device 100 and second
The negative input end of arithmetic unit 102-be both coupled to signal original device 11；The negative input end of first arithmetic device 100-be coupled to connects
Ground terminal；The positive input terminal of first arithmetic device 100+be coupled to transmission line L2；The positive input terminal of second arithmetic device 102+be coupled to
The positive input terminal of one arithmetic unit 100+；The output end K2 of second arithmetic device 102 is coupled to converting unit 103；The coupling of converting unit 103
It is connected to transmission line L1.
Two-way transmission apparatus 10B in receiving module RX is also comprising first arithmetic device 104, second arithmetic device 106 and conversion
Unit 107.Wherein, first arithmetic device 104 have positive input terminal+, negative input end-and output end K3；Second arithmetic device 106 has
Have positive input terminal+, negative input end-and output end K4.The output end K3 of first arithmetic device 104 and second arithmetic device 106 it is negative defeated
Enter to hold-it is both coupled to signal output apparatus 12；The negative input end of first arithmetic device 104-be coupled to earth terminal；First arithmetic device
104 positive input terminal+be coupled to transmission line L1；The positive input terminal of second arithmetic device 106+be coupled to first arithmetic device 104 just
Input+；The output end K4 of second arithmetic device 106 is coupled to converting unit 107；Converting unit 107 is coupled to transmission line L2.
When signal original device 11 provides the first input signal S1 to delivery module TX with positive voltage, such as Fig. 2A institutes
Show, the first input signal S1 can be respectively transmitted to the negative input end of the second arithmetic device 102 in two-way transmission apparatus 10A-with
And the output end K1 of first arithmetic device 100.
It should be noted that because the first input signal S1 with positive voltage is sent to the defeated of first arithmetic device 100
Go out and hold K1, rather than the positive input terminal+of first arithmetic device 100 or negative input end-, so first arithmetic device 100 can't receive tool
There is the first input signal S1 of positive voltage.That is, when the first input signal S1 is inputted to second arithmetic device 102, first
Input signal S1 can not input to first arithmetic device 100 simultaneously.Now, the positive input terminal of first arithmetic device 100+can't be from
Transmission line L2 receives any input signal, and its negative input end-earth terminal is coupled to, it will not also receive any input letter
Number.
As for second arithmetic device 102, due to second arithmetic device 102 negative input end-receive with positive voltage first
Input signal S1, and its positive input terminal+any input signal can't be received, therefore, the output end K2 of second arithmetic device 102
The first output signal S1 ' with negative voltage can be exported to converting unit 103.Wherein, the first output signal S1 ' and the first input
Signal S1 voltage swing is identical, and both difference are only that the difference of generating positive and negative voltage.When converting unit 103 is received with negative
During the first output signal S1 ' of voltage, converting unit 103 can by the first output signal S1 ' with negative voltage convert back with
First input signal S1 of positive voltage, and the first input signal S1 with positive voltage is exported to transmission line L1, to be sent to
Receiving module RX.
In practical application, converting unit 103 can be any element for having and negative voltage transition being returned to positive voltage, such as
P-type metal-oxide half field effect transistor (P-MOSFET), but be not limited.
When the first input signal S1 with positive voltage is transferred into receiving module RX by transmission line L1, the first input
Signal S1 can be respectively transmitted to the first arithmetic device 104 of the two-way transmission apparatus 10B in receiving module RX positive input terminal+and
The positive input terminal of second arithmetic device 106+.
For first arithmetic device 104, due to first arithmetic device 104 positive input terminal+receive with positive voltage
The negative input end of one input signal S1 and first arithmetic device 104-be coupled to earth terminal, the output end K3 meetings of first arithmetic device 104
First input signal S1 of the output with positive voltage is simultaneously respectively sent to the negative defeated of signal output apparatus 12 and second arithmetic device 106
Enter to hold-.
It should be noted that when signal output apparatus 12 is received with positive voltage from the output end K3 of first arithmetic device 104
The first input signal S1 when, i.e., the first input signal S1 with positive voltage that representation signal original device 11 is exported is suitable
Profit passes through the two-way transmission apparatus 10B quilts in the two-way transmission apparatus 10A in delivery module TX, transmission line L1 and receiving module RX
It is sent to signal output apparatus 12.
In addition, for second arithmetic device 106, connect by the positive input terminal of second arithmetic device 106+with negative input end-
That receive is the first input signal S1 with positive voltage, and second arithmetic device 106 cancels one another after both are subtracted each other, because
This, the output end K4 of second arithmetic device 106 can't export any signal to converting unit 107.Now, converting unit 107 is not
Any signal can be exported to transmission line L2, so transmission line L2 will not also transmit the two-way biography in any signal to delivery module TX
Defeated device 10A, the data latching phenomenon in conventional art caused by signal feedback thereby can be effectively avoided to occur.
When signal output apparatus 12 provides the second input signal S2 to receiving module RX with positive voltage, such as Fig. 2 B institutes
Show, the second input signal S2 can be respectively transmitted to the negative input end of the second arithmetic device 106 in two-way transmission apparatus 10B-with
And the output end K3 of first arithmetic device 104.
It should be noted that because the second input signal S2 with positive voltage is sent to the defeated of first arithmetic device 104
Go out and hold K3, rather than the positive input terminal+of first arithmetic device 104 or negative input end-, so first arithmetic device 104 can't receive tool
There is the second input signal S2 of positive voltage.That is, when the second input signal S2 is inputted to second arithmetic device 106, second
Input signal S2 can not input to first arithmetic device 104 simultaneously.Now, the positive input terminal of first arithmetic device 104+can't be from biography
Defeated line L1 receives any input signal, and its negative input end-earth terminal is coupled to, it will not also receive any input signal.
As for second arithmetic device 106, due to second arithmetic device 106 negative input end-receive with positive voltage second
Input signal S2, and its positive input terminal+any input signal can't be received from transmission line L1, therefore, second arithmetic device 106
Output end K4 can export the second output signal S2 ' with negative voltage to converting unit 107.Wherein, the second output signal S2 '
Identical with the second input signal S2 voltage swing, both difference are only that the difference of generating positive and negative voltage.When converting unit 107 connects
When receiving the second output signal S2 ' with negative voltage, converting unit 107 can be by the second output signal S2 ' with negative voltage
The second input signal S2 with positive voltage is converted back, and the second input signal S2 with positive voltage is exported to transmission line
L2, to be sent to delivery module TX.
In practical application, converting unit 107 can be any element for having and negative voltage transition being returned to positive voltage, such as
P-type metal-oxide half field effect transistor (P-MOSFET), but be not limited.
When the second input signal S2 with positive voltage is transferred into delivery module TX by transmission line L2, the second input
Signal S2 can be respectively transmitted to the first arithmetic device 100 of the two-way transmission apparatus 10A in delivery module TX positive input terminal+and
The positive input terminal of second arithmetic device 102+.
For first arithmetic device 100, due to first arithmetic device 100 positive input terminal+receive with positive voltage
The negative input end of two input signal S2 and first arithmetic device 100-be coupled to earth terminal, the output end K1 meetings of first arithmetic device 100
Second input signal S2 of the output with positive voltage is simultaneously respectively sent to the negative defeated of signal original device 11 and second arithmetic device 102
Enter to hold-.
It should be noted that when signal original device 11 is received with positive voltage from the output end K1 of first arithmetic device 100
The second input signal S2 when, i.e., the second input signal S2 with positive voltage that representation signal output device 12 is exported is suitable
Profit passes through the two-way transmission apparatus 10A quilts in the two-way transmission apparatus 10B in receiving module RX, transmission line L2 and delivery module TX
It is sent to signal original device 11.
In addition, for second arithmetic device 102, connect by the positive input terminal of second arithmetic device 102+with negative input end-
That receive is the second input signal S2 with positive voltage, and second arithmetic device 102 cancels one another after both are subtracted each other, because
This, the output end K2 of second arithmetic device 102 can't export any signal to converting unit 103.Now, converting unit 103 is not
Any signal can be exported to transmission line L1, so transmission line L1 will not also transmit the two-way biography in any signal to receiving module RX
Defeated device 10B, the data latching phenomenon in conventional art caused by signal feedback thereby can be effectively avoided to occur.
Pass through Fig. 2A, Fig. 2 B and above-described embodiment：By being arranged in signal extender EXT delivery module TX
Two-way transmission apparatus 10A, the two-way transmission apparatus 10B being arranged in signal extender EXT receiving module RX and a pair of biographies
Defeated line L1~L2, it is defeated that the first input signal S1 with positive voltage that signal original device 11 is exported can smoothly be sent to signal
Go out device 12, and the second input signal S2 with positive voltage that signal output apparatus 12 is exported also can smoothly be sent to signal
Original device 11, use the transmitted in both directions for realizing half-duplex control signal.
Further, since the first input signal S1 that signal original device 11 is exported need to be by two-way in delivery module TX
Receiving module RX can be just transferred into after the transmission of transmitting device 10A and transmission line L1 long range, the institute of signal output apparatus 12 is defeated
The the second input signal S2 gone out also needs the long range transmission by the two-way transmission apparatus 10B in receiving module RX and transmission line L2
Delivery module TX can be just transferred into afterwards, cause the first input signal S1 and the second input signal S2 signal intensity might have
Decayed, therefore, the two-way transmission apparatus 10B in two-way transmission apparatus 10A and receiving module RX in delivery module TX can enter
One step is provided with signal compensation unit, to carry out signal compensation to the first input signal S1 and the second input signal S2.
For example, as shown in Figure 2 C, the signal compensation unit 101 in two-way transmission apparatus 10A can be coupled to the first fortune
Calculate the positive input terminal of positive input terminal+and the second arithmetic device 102 of device 100+between, and couple the output of first arithmetic device 100
K1 is held, to carry out signal compensation to the second input signal S2；Signal compensation unit 101 in two-way transmission apparatus 10B can coupling
Be connected to first arithmetic device 104 positive input terminal+and second arithmetic device 106 positive input terminal+between, and coupling first arithmetic device
104 output end K3, to carry out signal compensation to the first input signal S1.
In practical application, signal compensation unit 101 can include the electricity that the elements such as resistive element and capacity cell are formed
Road, but be not limited.
In summary, the two-way transmission apparatus 10A and 10B proposed by the present invention applied in signal extender EXT be not only
The transmitted in both directions of half-duplex control signal can be realized with the framework of low cost, and be not required to what is controlled by sequential (Timing)
Mode may be such that and will not collide with each other and disturb during two-way signaling alternate transmission, can also avoid believing when SECO is wrong
Data latching phenomenon caused by number feedback occurs.
Another preferred embodiment according to the present invention is also a kind of two-way transmission apparatus.It is two-way in this embodiment
Transmitting device can be applied in a Signal Booster (booster), but be not limited.Fig. 3 is refer to, Fig. 3 is to illustrate this reality
Apply the schematic diagram that the two-way transmission apparatus in example is applied to Signal Booster.
As shown in figure 3, in signal transmission system 2, it is defeated with signal that Signal Booster BST is coupled to signal original device 21
Go out between device 22.Signal Booster BST includes the delivery module TX and receiving module RX being coupled to each other.Delivery module TX and connect
Receive in module RX and be respectively arranged with two-way transmission apparatus 20A and 20B.Two-way transmission apparatus 20A and 20B are coupled to each other.
It should be noted that delivery module TX and receiving module different from the signal extender EXT in previous embodiment
The distant transmission that signal need to be carried out by CAT5 cables, the delivery module TX and receiving module RX in this embodiment between RX
It is arranged in Signal Booster BST adjacent to each other, therefore only needs to couple by common circuit.
In practical application, signal original device 21 can be any device that can provide half-duplex control signal, example
If provide inter-integrated circuit (I2C) the Image sources device of control signal or USB can be provided
(USB) the USB master control sets of 1.1 control signals or the control signal of USB 2.0；Signal output apparatus 22 can be appointed
What can receive the device of half-duplex control signal, such as can receive inter-integrated circuit (I2C) image of control signal is defeated
Go out device or the controlled dresses of USB of the control signal of USB 1.1 or the control signal of USB 2.0 can be received
Put, but be not limited.
In this embodiment, by the two-way transmission apparatus 20A that is arranged in Signal Booster BST delivery module TX with
And the two-way transmission apparatus 20B in Signal Booster BST receiving module RX is arranged at, signal original device 21 is exported defeated
Signal output apparatus 22 can be smoothly sent to by entering signal, and another input signal that signal output apparatus 22 is exported also can be smooth
Signal original device 21 is sent to, uses the transmitted in both directions for realizing half-duplex control signal.
Show as the two-way transmission apparatus 20A and 20B that are arranged in delivery module TX and receiving module RX circuit structure
Be intended to, due to two-way transmission apparatus 20A and 20B circuit structure and practical operation situation and foregoing two-way transmission apparatus 10A and
10B is similar, therefore also refer to the two-way transmission apparatus 10A and 10B shown in Fig. 2A and Fig. 2 B and its related narration, in this not separately
Repeat.Similarly, signal compensation unit also can be set in Signal Booster BST, also refer to shown in Fig. 2 C and its correlation describes,
Do not repeated separately in this.
Compared to background technology, following advantages are had according to the two-way transmission apparatus of the present invention：
(1) two-way transmission apparatus of the invention realizes the transmitted in both directions of half-duplex control signal with the framework of low cost, and
It will not be interfered during two-way signaling alternate transmission, therefore can improve background technology need to use the cost caused by application-specific integrated circuit higher
Problem.
(2) two-way transmission apparatus of the invention can be applied to have the signal of signal extender or Signal Booster transmission system
In system, and elastomeric compensation mechanism can be provided by setting up signal compensation unit.
(3) because the two-way transmission apparatus of the present invention is not required to operate by way of SECO, can solve background technology
In when SECO is wrong the problem of data latching caused by signal feedback.
Pass through the above detailed description of preferred embodiments, it would be desirable to the feature and spirit of the present invention is more clearly described, and
Not scope of the invention is any limitation as with above-mentioned disclosed preferred embodiment.On the contrary, the purpose is to wish
Various changes can be covered and have being arranged in the category of the scope of the claims to be applied of the invention of equality.
Claims (16)
1. a kind of two-way transmission apparatus, comprising：
One first arithmetic device, there is a first input end, be coupled to one second input and one first output end of earth terminal；With
And
One second arithmetic device, there is one the 3rd input, one the 4th input and one second output end, the coupling of the 3rd input
The first input end of the first arithmetic device, the 4th input couple first output end of the first arithmetic device, wherein should
4th input receives one first input signal, and exports one first output signal from second output end.
2. two-way transmission apparatus as claimed in claim 1, it is characterised in that when first input signal is inputted to second fortune
When calculating device, first input signal can not input to the first arithmetic device simultaneously.
3. two-way transmission apparatus as claimed in claim 1, it is characterised in that the 4th input of the second arithmetic device is received
To first input signal there is positive voltage, and first output signal that second output end is exported has negative voltage.
4. two-way transmission apparatus as claimed in claim 3, it is characterised in that further include：
One converting unit, second output end of the second arithmetic device is coupled, first output with negative voltage to be believed
Number convert back first input signal with positive voltage and export.
5. two-way transmission apparatus as claimed in claim 1, it is characterised in that first input signal is half-duplex control letter
Number.
6. two-way transmission apparatus as claimed in claim 5, it is characterised in that the half-duplex control signal is internal integration electricity
Road control signal, the control signal of a USB 1.1 or the control signal of a USB 2.0.
7. two-way transmission apparatus as claimed in claim 4, it is characterised in that applied in a signal extender, the signal prolongs
Stretch device and include a delivery module, a pair of transmission lines and a receiving module, this is coupled to the delivery module and the reception to transmission line
Between module, the two-way transmission apparatus is respectively arranged with the delivery module and the receiving module, this of the delivery module is two-way
The converting unit of transmitting device exports first input signal to the wherein transmission line to transmission line, the receiving module
The two-way transmission apparatus receive first input signal from the transmission line.
8. two-way transmission apparatus as claimed in claim 7, it is characterised in that in the two-way transmission apparatus of the receiving module,
The first input end of the first arithmetic device receives first input signal from the transmission line, and should by first output end output
First input signal, the 3rd input of the same second arithmetic device receive first input signal from the transmission line, and should
4th input receives the of first input signal, the wherein second arithmetic device from first output end of the first arithmetic device
Three inputs and the 4th input are respectively second output of a positive input terminal and a negative input end, the now second arithmetic device
End will not export any signal.
9. two-way transmission apparatus as claimed in claim 7, it is characterised in that this is a pair in a CAT5 cables to transmission line
Twisted-pair feeder.
10. two-way transmission apparatus as claimed in claim 7, it is characterised in that the delivery module connects from a signal original device
First input signal is received, and first input signal is reached by receiving module to a wherein transmission line for transmission line by this,
And the receiving module exports first input signal to a signal output apparatus, the receiving module can also fill from the signal output
Put and receive one second input signal, and second input signal is reached by the transmission mould by another transmission line to transmission line
Exported after block to the signal original device.
11. two-way transmission apparatus as claimed in claim 7, it is characterised in that the delivery module receives from a USB master control sets
First input signal, and first input signal is reached by receiving module to a wherein transmission line for transmission line by this, and
First input signal is exported to a USB controlled devices, the receiving module and can also connect from the USB controlled devices by the receiving module
After receiving one second input signal and second input signal being reached into the delivery module by another transmission line to transmission line
Export to the USB master control sets.
12. two-way transmission apparatus as claimed in claim 1, it is characterised in that the 3rd input of the second arithmetic device and
Four inputs are respectively a positive input terminal and a negative input end.
13. two-way transmission apparatus as claimed in claim 4, it is characterised in that applied in a Signal Booster, the signal increases
Strong device includes a delivery module and a receiving module, and transmitted in both directions dress is respectively arranged with the delivery module and the receiving module
Put, the converting unit of the two-way transmission apparatus of the delivery module couple the two-way transmission apparatus of the receiving module this
The first input end of one arithmetic unit, the converting unit of the two-way transmission apparatus of the receiving module couple the delivery module
The first input end of the first arithmetic device of the two-way transmission apparatus.
14. two-way transmission apparatus as claimed in claim 13, it is characterised in that in the two-way transmission apparatus of the receiving module
In, the first input end of the first arithmetic device receives first input signal from delivery module, and is exported by the first output end
First input signal, the 3rd input of the same second arithmetic device receive first input signal from the delivery module,
And the 4th input from first output end of the first arithmetic device receive first input signal, the wherein second arithmetic device
The 3rd input and the 4th input be respectively a positive input terminal and a negative input end, now the second arithmetic device this second
Output end will not export any signal.
15. two-way transmission apparatus as claimed in claim 13, it is characterised in that the delivery module connects from a signal original device
First input signal is received, and the receiving module exports first input signal to a signal output apparatus, the receiving module
Also one second input signal can be received from the signal output apparatus, and is exported after second input signal is reached into the delivery module
To the signal original device.
16. two-way transmission apparatus as claimed in claim 1, it is characterised in that further include：
Multiple signal compensation units, are respectively coupled to first output end of the first arithmetic device, and are coupled to first computing
Between the first input end of device and the 3rd input of the second arithmetic device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103106287 | 2014-02-25 | ||
| TW103106287A TWI556650B (en) | 2014-02-25 | 2014-02-25 | Bidirectional transmission apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104869343A CN104869343A (en) | 2015-08-26 |
| CN104869343B true CN104869343B (en) | 2018-02-02 |
Family
ID=53914819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410445256.3A Active CN104869343B (en) | 2014-02-25 | 2014-09-03 | Bidirectional transmission device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104869343B (en) |
| TW (1) | TWI556650B (en) |
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| CN102447867A (en) * | 2010-10-05 | 2012-05-09 | 宏正自动科技股份有限公司 | Signal extender system and signal extender thereof |
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| US3889072A (en) * | 1973-10-19 | 1975-06-10 | Itt | Bi-directional amplification apparatus |
| KR100295427B1 (en) * | 1999-04-14 | 2001-07-12 | 정명식 | Impedance matched current-mode bidirectional input/output buffer |
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| US8958497B2 (en) * | 2012-06-12 | 2015-02-17 | Silicon Image, Inc. | Simultaneous transmission of clock and bidirectional data over a communication channel |
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|---|---|---|---|---|
| CN2048650U (en) * | 1989-03-06 | 1989-11-29 | 邮电部第四实验工厂 | Two-way amplifier communication signal |
| CN1514546A (en) * | 2002-12-31 | 2004-07-21 | 三星电子株式会社 | Bidirectional concurrent input/output circuit and method |
| US20060029207A1 (en) * | 2004-07-12 | 2006-02-09 | Luis Larzabal | Amplifier for unshielded twisted pair wire signals |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104869343A (en) | 2015-08-26 |
| TW201534124A (en) | 2015-09-01 |
| TWI556650B (en) | 2016-11-01 |
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