CN104869343A - Bidirectional transmission device - Google Patents
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- CN104869343A CN104869343A CN201410445256.3A CN201410445256A CN104869343A CN 104869343 A CN104869343 A CN 104869343A CN 201410445256 A CN201410445256 A CN 201410445256A CN 104869343 A CN104869343 A CN 104869343A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 177
- 230000002457 bidirectional effect Effects 0.000 title abstract 3
- 239000004606 Fillers/Extenders Substances 0.000 claims description 29
- 238000010586 diagram Methods 0.000 description 10
- 238000012163 sequencing technique Methods 0.000 description 6
- 230000008054 signal transmission Effects 0.000 description 6
- 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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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, particularly adopts the higher application-specific integrated circuit of cost can realize the two-way transmission apparatus of the transmitted in both directions of half-duplex control signal about a kind of need.
Background technology
Generally speaking, traditional HDMI signal extender (Extender) most employing application-specific integrated circuit solves the problem that double-direction control signal cannot compensate.Its shortcoming is the high cost of application-specific integrated circuit, and signal compensation is fixing, less elasticity.
In addition, the transmitting-receiving that the mode that traditional HDMI signal extender also can adopt sequential (Timing) to control carries out two-way signaling by enable control pin position controls.But due to sequencing control comparatively difficulty and realize not easily, wrong once sequencing control, signal is feedback and is caused the problem of data latching (Latch) possibly.
Summary of the invention
Therefore, the present invention proposes a kind of two-way transmission apparatus, to solve the problems referred to above that background technology suffers from.
A specific embodiment according to the present invention is a kind of two-way transmission apparatus.In this embodiment, two-way transmission apparatus comprises first arithmetic device and second arithmetic device.First arithmetic device has first input end and the first output.Second arithmetic device has the 3rd input, four-input terminal and the second output.3rd input of second arithmetic device couples the first input end of first arithmetic device.The four-input terminal of second arithmetic device couples the first output of first arithmetic device.The four-input terminal of second arithmetic device receives the first input signal, and exports the first output signal by its second output.
In one embodiment, when the first input signal inputs to second arithmetic device, namely the first input signal cannot input to first arithmetic device simultaneously.
In one embodiment, first arithmetic device also has the second input.Second input is coupled to earth terminal.
In one embodiment, 3rd input of second arithmetic device and four-input terminal are respectively a positive input terminal and a negative input end, the first input signal received by four-input terminal has positive voltage, and the first output signal that the second output exports has negative voltage.
In one embodiment, two-way transmission apparatus comprises converting unit further.Converting unit couples the second output of second arithmetic device, in order to first output signal with negative voltage is converted back first input signal with positive voltage and exports.
In one embodiment, the first input signal is half-duplex control signal.
In one embodiment, half-duplex control signal is inter-integrated circuit (Inter-IntegratedCircuit, I
2c) 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 comprises delivery module, a pair transmission line and receiver module.This is coupled between delivery module and receiver module transmission line.Two-way transmission apparatus is respectively arranged with in delivery module and receiver module, first input signal is exported to this wherein transmission line to transmission line by the converting unit of the two-way transmission apparatus of delivery module, and the two-way transmission apparatus of receiver module receives the first input signal from this transmission line.
In one embodiment, in the two-way transmission apparatus of receiver module, the first input end of first arithmetic device receives the first input signal from this transmission line, and export the first input signal by the first output, the 3rd input equally in second arithmetic device receives the first input signal from this transmission line, and four-input terminal receives the first input signal from the first output of first arithmetic device, wherein the 3rd input of this second arithmetic device and four-input terminal are respectively a positive input terminal and a negative input end, therefore the second output of this second arithmetic device can not export any signal.
In one embodiment, this is a pair twisted-pair feeder of CAT5 cable to transmission cable.
In one embodiment, delivery module receives the first input signal from a signal original device (such as image input device), and by this, by this first input signal, receiver module is reached to a wherein transmission line of transmission line, export the first input signal to a signal output apparatus (such as image output device) for this receiver module.This receiver module also can receive one second input signal from signal output apparatus, and exports this signal original device to after the second input signal being reached delivery module by this to another transmission line of transmission line.
In one embodiment, delivery module receives the first input signal from a USB master control set, and by a wherein transmission line of a pair transmission line, this first input signal is reached receiver module, exports the first input signal to a USB controlled device for receiver module.This receiver module also can receive one second input signal from USB controlled device, and exports USB master control set to after the second input signal being reached delivery module by this to another transmission line of transmission line.
In one embodiment, two-way transmission apparatus is applied in Signal Booster (booster).Signal Booster comprises delivery module and receiver module.Two-way transmission apparatus is respectively arranged with in delivery module and receiver module, the converting unit of the two-way transmission apparatus of delivery module couples the first input end of the first arithmetic device of the two-way transmission apparatus of receiver module, and the converting unit of the two-way transmission apparatus of receiver module couples the first input end of the first arithmetic device of the two-way transmission apparatus of delivery module.
In one embodiment, in the two-way transmission apparatus of receiver module, the first input end of first arithmetic device receives the first input signal from this wherein transmission line to transmission line and exports the first input signal by the first output, 3rd input of second arithmetic device receives the first input signal from this transmission line, and four-input terminal receives the first input signal from the first output of first arithmetic device, wherein the 3rd input of this second arithmetic device and four-input terminal are respectively a positive input terminal and a negative input end, therefore the second output of this second arithmetic device can not export any signal.
In one embodiment, delivery module receives the first input signal from a signal original device, and receiver module exports the first input signal to a signal output apparatus, receiver module also can receive one second input signal from signal output apparatus, and exports signal original device to after the second input signal is reached delivery module.
In one embodiment, two-way transmission apparatus comprises multiple signal compensation unit further, couple the first output of first arithmetic device respectively, and be coupled between the first input end of first arithmetic device and the 3rd input of second arithmetic device, in order to carry out signal compensation.
Compared to background technology, two-way transmission apparatus according to the present invention has following advantages:
(1) two-way transmission apparatus of the present invention realizes the transmitted in both directions of half-duplex control signal with the framework of low cost, and can not mutually disturb during two-way signaling alternate transmission, therefore can improve the higher problem of cost that background technology need adopt application-specific integrated circuit to cause.
(2) two-way transmission apparatus of the present invention can be applicable to have in the signal transmission system of signal extender or Signal Booster, provides the compensation mechanism of higher elasticity by setting up signal compensation unit.
(3) because two-way transmission apparatus of the present invention does not need the mode controlled by sequential (Timing) to operate, the problem of the data latching caused of feedbacking once the wrong signal of sequencing control can be solved in background technology.
Can be further understood by following detailed Description Of The Invention and institute's accompanying drawings about the advantages and spirit of the present invention.
Accompanying drawing explanation
Fig. 1 illustrates the schematic diagram being applied to signal extender according to the two-way transmission apparatus of a specific embodiment of the present invention.
Fig. 2 A illustrates the first input signal is sent to signal output apparatus by signal original device schematic diagram by the two-way transmission apparatus in signal extender.
Fig. 2 B illustrates the second input signal is sent to signal original device by signal output apparatus schematic diagram by the two-way transmission apparatus in signal extender.
Fig. 2 C illustrates the schematic diagram being provided with signal compensation unit in two-way transmission apparatus further.
Fig. 3 illustrates the schematic diagram being applied to Signal Booster according to the two-way transmission apparatus of another specific embodiment of the present invention.
[symbol description]
1,2: signal transmission system
EXT: signal extender
BST: Signal Booster
TX: delivery module
RX: receiver module
10A, 10B, 20A, 20B: two-way transmission apparatus
11,21: signal original device
12,22: signal output apparatus
S1: the first input signal
S1 ': the first output signal
S2: the second input signal
S2 ': the second output signal
100,104: first arithmetic device
102,106: second arithmetic device
103,107: converting unit
L1 ~ L2: a pair transmission line
+: positive input terminal
-: negative input end
101: signal compensation unit
K1 ~ K4: output
Embodiment
A preferred embodiment according to the present invention is a kind of two-way transmission apparatus.In this embodiment, two-way transmission apparatus can be applicable in a signal extender (extender), and signal extender can be applicable in a signal transmission system, but not as limit.Please refer to Fig. 1, Fig. 1 is the schematic diagram that the two-way transmission apparatus illustrated in this embodiment is applied to signal extender.
As shown in Figure 1, in signal transmission system 1, signal extender EXT is coupled between signal original device 11 and signal output apparatus 12.Signal extender EXT comprises delivery module TX, a pair transmission line L1 ~ L2 and receiver module RX.This is coupled between delivery module TX and receiver module RX transmission line L1 ~ L2.Two-way transmission apparatus 10A and 10B is respectively arranged with in delivery module TX and receiver module RX.In this embodiment, arbitrary to twisted-pair feeder in these four pairs of twisted-pair feeders that transmission line L1 ~ L2 is comprised for CAT5 cable, but not as limit.
In practical application, signal original device 11 can be any device that can provide half-duplex control signal, such as, can provide inter-integrated circuit (Inter-Integrated Circuit, I
2c) the Image sources device (as HDMI audio and video player) of control signal, or the USB master control set of USB (Universal SerialBus, USB) 1.1 control signals or USB 2.0 control signal can be provided; Signal output apparatus 12 can be any device that can receive half-duplex control signal, such as, can receive inter-integrated circuit (I
2c) image output device (as screen) of control signal, or the USB controlled device of USB 1.1 control signal or USB 2.0 control signal can be received, but all not as limit.
Then, please refer to Fig. 2 A and Fig. 2 B, Fig. 2 A is the first input signal illustrating signal original device transfers to signal output apparatus schematic diagram by the two-way transmission apparatus of signal extender; Fig. 2 B is the second input signal illustrating signal output apparatus transfers to signal original device schematic diagram by the two-way transmission apparatus of signal extender.
As shown in Figure 2 A, signal original device 11 provides the first input signal S1 to delivery module TX, first input signal S1 to be exported to the two-way transmission apparatus 10B in receiver module RX by the two-way transmission apparatus 10A in delivery module TX to a wherein transmission line L1 of transmission line by this, and export the first input signal S1 to signal output apparatus 12 by two-way transmission apparatus 10B.
As shown in Figure 2 B, signal output apparatus 12 provides the second input signal S2 to receiver module RX, second input signal S2 to be exported to the two-way transmission apparatus 10A in delivery module TX by the two-way transmission apparatus 10B in receiver module RX to another transmission line L2 of transmission line by this, and export the second input signal S2 to signal original device 11 by two-way transmission apparatus 10A.
It should be noted that, because the first input signal S1 transfers to signal output apparatus 12 from signal original device 11 by signal extender EXT, and the second input signal S2 transfers to signal original device 11 from signal output apparatus 12 by signal extender EXT, that is the transmission direction of the first input signal S1 is contrary with the transmission direction of the second input signal S2.
In this embodiment, the first input signal S1 and the second input signal S2 all has positive voltage, and the first input signal S1 and the second input signal S2 all belongs to half-duplex control signal, such as inter-integrated circuit (I
2c) control signal, USB (USB) 1.1 control signal or USB 2.0 control signal, but not as limit.
Next, signal extender EXT will be described respectively by Fig. 2 A and Fig. 2 B in detail how undertaken by two-way transmission apparatus 10A and 10B 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 comprises first arithmetic device 100, second arithmetic device 102 and converting unit 103.Wherein, first arithmetic device 100 have positive input terminal+, negative input end-and output K1; Second arithmetic device 102 have positive input terminal+, negative input end-and output K2.The output K1 of first arithmetic device 100 and the negative input end of second arithmetic device 102-be all coupled to signal original device 11; The negative input end of first arithmetic device 100-be coupled to earth terminal; The positive input terminal of first arithmetic device 100+be coupled to transmission line L2; The positive input terminal of the positive input terminal of second arithmetic device 102+be coupled to first arithmetic device 100+; The output K2 of second arithmetic device 102 is coupled to converting unit 103; Converting unit 103 is coupled to transmission line L1.
Two-way transmission apparatus 10B in receiver module RX also comprises first arithmetic device 104, second arithmetic device 106 and converting unit 107.Wherein, first arithmetic device 104 have positive input terminal+, negative input end-and output K3; Second arithmetic device 106 have positive input terminal+, negative input end-and output K4.The output K3 of first arithmetic device 104 and the negative input end of second arithmetic device 106-be all coupled to signal output apparatus 12; The negative input end of first arithmetic device 104-be coupled to earth terminal; The positive input terminal of first arithmetic device 104+be coupled to transmission line L1; The positive input terminal of the positive input terminal of second arithmetic device 106+be coupled to first arithmetic device 104+; The output 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, as shown in Figure 2 A, the first input signal S1 can be transferred into the negative input end-of the second arithmetic device 102 in two-way transmission apparatus 10A and the output K1 of first arithmetic device 100 respectively.
It should be noted that, because the first input signal S1 with positive voltage is the output K1 being transferred into first arithmetic device 100, but not the positive input terminal+of first arithmetic device 100 or negative input end-, so first arithmetic device 100 can't receive the first input signal S1 with positive voltage.That is, when the first input signal S1 inputs to second arithmetic device 102, namely the first input signal S1 cannot input to first arithmetic device 100 simultaneously.Now, the positive input terminal of first arithmetic device 100+any input signal can't be received from transmission line L2, and its negative input end-be coupled to earth terminal, also can not receive any input signal.
As for second arithmetic device 102, due to the negative input end-receive the first input signal S1 with positive voltage of second arithmetic device 102, and its positive input terminal+any input signal can't be received, therefore, the output K2 of second arithmetic device 102 can export have negative voltage first output signal S1 ' to converting unit 103.Wherein, the first output signal S1 ' is identical with the voltage swing of the first input signal S1, and both difference are only the difference of generating positive and negative voltage.When converting unit 103 receives the first output signal S1 ' with negative voltage, the first output signal S1 ' with negative voltage can be converted back the first input signal S1 with positive voltage by converting unit 103, and export the first input signal S1 with positive voltage to transmission line L1, to be sent to receiver module RX.
In practical application, converting unit 103 can be anyly have element negative voltage transition being returned positive voltage, such as P type metal-oxide half field effect transistor (P-MOSFET), but not as limit.
When the first input signal S1 with positive voltage is transferred into receiver module RX by transmission line L1, the first input signal S1 can be transferred into respectively the positive input terminal of the positive input terminal+of the first arithmetic device 104 of the two-way transmission apparatus 10B in receiver module RX and second arithmetic device 106+.
With regard to first arithmetic device 104, the the first input signal S1 that there is positive voltage due to the positive input terminal+receive of first arithmetic device 104 and the negative input end of first arithmetic device 104-be coupled to earth terminal, the output K3 of first arithmetic device 104 can export the first input signal S1 with positive voltage and be sent to respectively the negative input end of signal output apparatus 12 and second arithmetic device 106-.
It should be noted that, when signal output apparatus 12 receives the first input signal S1 with positive voltage from the output K3 of first arithmetic device 104, the first input signal S1 of what namely representation signal original device 11 exported have positive voltage is smooth is transferred into signal output apparatus 12 by the two-way transmission apparatus 10B in the two-way transmission apparatus 10A in delivery module TX, transmission line L1 and receiver module RX.
In addition, with regard to second arithmetic device 106, due to the positive input terminal+with negative input end-that received is all the first input signal S1 with positive voltage of second arithmetic device 106, second arithmetic device 106 cancels one another after both being subtracted each other, therefore, the output K4 of second arithmetic device 106 can't export any signal to converting unit 107.Now, converting unit 107 can not export any signal to transmission line L2, so transmission line L2 also can not transmit any signal to the two-way transmission apparatus 10A in delivery module TX, can effectively avoid by this occurring because signal feedbacks the data latching phenomenon that causes in conventional art.
When signal output apparatus 12 provides the second input signal S2 to receiver module RX with positive voltage, as shown in Figure 2 B, the second input signal S2 can be transferred into the negative input end-of the second arithmetic device 106 in two-way transmission apparatus 10B and the output K3 of first arithmetic device 104 respectively.
It should be noted that, because the second input signal S2 with positive voltage is the output K3 being transferred into first arithmetic device 104, but not the positive input terminal+of first arithmetic device 104 or negative input end-, so first arithmetic device 104 can't receive the second input signal S2 with positive voltage.That is, when the second input signal S2 inputs to second arithmetic device 106, the second input signal S2 cannot input to first arithmetic device 104 simultaneously.Now, the positive input terminal of first arithmetic device 104+any input signal can't be received from transmission line L1, and its negative input end-be coupled to earth terminal, also can not receive any input signal.
As for second arithmetic device 106, due to the negative input end-receive the second input signal S2 with positive voltage of second arithmetic device 106, and its positive input terminal+any input signal can't be received from transmission line L1, therefore, the output K4 of second arithmetic device 106 can export have negative voltage second output signal S2 ' to converting unit 107.Wherein, the second output signal S2 ' is identical with the voltage swing of the second input signal S2, and both difference are only the difference of generating positive and negative voltage.When converting unit 107 receives the second output signal S2 ' with negative voltage, the second output signal S2 ' with negative voltage can be converted back the second input signal S2 with positive voltage by converting unit 107, and export the second input signal S2 with positive voltage to transmission line L2, to be sent to delivery module TX.
In practical application, converting unit 107 can be anyly have element negative voltage transition being returned positive voltage, such as P type metal-oxide half field effect transistor (P-MOSFET), but not as limit.
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 transferred into respectively the positive input terminal of the positive input terminal+of the first arithmetic device 100 of the two-way transmission apparatus 10A in delivery module TX and second arithmetic device 102+.
With regard to first arithmetic device 100, the the second input signal S2 that there is positive voltage due to the positive input terminal+receive of first arithmetic device 100 and the negative input end of first arithmetic device 100-be coupled to earth terminal, the output K1 of first arithmetic device 100 can export the second input signal S2 with positive voltage and be sent to respectively the negative input end of signal original device 11 and second arithmetic device 102-.
It should be noted that, when signal original device 11 receives the second input signal S2 with positive voltage from the output K1 of first arithmetic device 100, the second input signal S2 of what namely representation signal output device 12 exported have positive voltage is smooth is transferred into signal original device 11 by the two-way transmission apparatus 10A in the two-way transmission apparatus 10B in receiver module RX, transmission line L2 and delivery module TX.
In addition, with regard to second arithmetic device 102, due to the positive input terminal+with negative input end-that received is all the second input signal S2 with positive voltage of second arithmetic device 102, second arithmetic device 102 cancels one another after both being subtracted each other, therefore, the output K2 of second arithmetic device 102 can't export any signal to converting unit 103.Now, converting unit 103 can not export any signal to transmission line L1, so transmission line L1 also can not transmit any signal to the two-way transmission apparatus 10B in receiver module RX, can effectively avoid by this occurring because signal feedbacks the data latching phenomenon that causes in conventional art.
By Fig. 2 A, Fig. 2 B and above-described embodiment known: by being arranged at the two-way transmission apparatus 10A in the delivery module TX of signal extender EXT, be arranged at the two-way transmission apparatus 10B in the receiver module RX of signal extender EXT and a pair transmission line L1 ~ L2, first input signal S1 of what signal original device 11 exported have positive voltage can be sent to signal output apparatus 12 smoothly, and the second input signal S2 with positive voltage that signal output apparatus 12 exports also can be sent to signal original device 11 smoothly, use the transmitted in both directions realizing half-duplex control signal.
In addition, the the first input signal S1 exported due to signal original device 11 just need can be transferred into receiver module RX after the long range propagation of the two-way transmission apparatus 10A in delivery module TX and transmission line L1, the second input signal S2 that signal output apparatus 12 exports also needs just can be transferred into delivery module TX after the long range propagation of the two-way transmission apparatus 10B in receiver module RX and transmission line L2, the signal strength signal intensity of the first input signal S1 and the second input signal S2 is caused to decay to some extent, therefore, two-way transmission apparatus 10A in delivery module TX and the two-way transmission apparatus 10B in receiver module RX can be provided with signal compensation unit further, in order 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, signal compensation unit 101 in two-way transmission apparatus 10A can be coupled to the positive input terminal of the positive input terminal+of first arithmetic device 100 and second arithmetic device 102+between, and couple the output K1 of first arithmetic device 100, in order to carry out signal compensation to the second input signal S2; Signal compensation unit 101 in two-way transmission apparatus 10B can be coupled to the positive input terminal of the positive input terminal+of first arithmetic device 104 and second arithmetic device 106+between, and couple the output K3 of first arithmetic device 104, in order to carry out signal compensation to the first input signal S1.
In practical application, signal compensation unit 101 can comprise the circuit that the element such as resistive element and capacity cell is formed, but not as limit.
In sum, two-way transmission apparatus 10A and 10B be applied in signal extender EXT that the present invention proposes can not only realize the transmitted in both directions of half-duplex control signal with the framework of low cost, and do not need the mode controlled by sequential (Timing) can make can not mutually conflict and disturb during two-way signaling alternate transmission, also can avoid feedbacking once the wrong signal of sequencing control the data latching phenomenon that causes and occur.
Also be a kind of two-way transmission apparatus according to another preferred embodiment of the present invention.In this embodiment, two-way transmission apparatus can be applicable in a Signal Booster (booster), but not as limit.Please refer to Fig. 3, Fig. 3 is the schematic diagram that the two-way transmission apparatus illustrated in this embodiment is applied to Signal Booster.
As shown in Figure 3, in signal transmission system 2, Signal Booster BST is coupled between signal original device 21 and signal output apparatus 22.Signal Booster BST comprises the delivery module TX and receiver module RX that are coupled to each other.Two-way transmission apparatus 20A and 20B is respectively arranged with in delivery module TX and receiver module RX.Two-way transmission apparatus 20A and 20B is coupled to each other.
It should be noted that, be different from the distant transmission need being carried out signal by CAT5 cable between the delivery module TX of the signal extender EXT in previous embodiment and receiver module RX, delivery module TX in this embodiment and receiver module RX is arranged in Signal Booster BST adjacent one another are, therefore only needs to be coupled by common circuit.
In practical application, signal original device 21 can be any device that can provide half-duplex control signal, such as, can provide inter-integrated circuit (I
2c) control signal Image sources device or the USB master control set of USB (USB) 1.1 control signal or USB 2.0 control signal can be provided; Signal output apparatus 22 can be any device that can receive half-duplex control signal, such as, can receive inter-integrated circuit (I
2c) control signal image output device or the USB controlled device of USB 1.1 control signal or USB 2.0 control signal can be received, but all not as limit.
In this embodiment, by the two-way transmission apparatus 20A be arranged in the delivery module TX of Signal Booster BST and the two-way transmission apparatus 20B be arranged in the receiver module RX of Signal Booster BST, the input signal that signal original device 21 exports can be sent to signal output apparatus 22 smoothly, and another input signal that signal output apparatus 22 exports also can be sent to signal original device 21 smoothly, use the transmitted in both directions realizing half-duplex control signal.
As for the electrical block diagram of two-way transmission apparatus 20A and 20B be arranged in delivery module TX and receiver module RX, due to the circuit structure of two-way transmission apparatus 20A and 20B and practical operation situation and aforementioned two-way transmission apparatus 10A and 10B similar, therefore also please refer to Fig. 2 A and two-way transmission apparatus 10A and 10B shown in Fig. 2 B and relevant to describe, do not repeat separately in this.Similarly, also can signalization compensating unit in Signal Booster BST, also to please refer to shown in Fig. 2 C and relevantly to describe, do not repeat separately in this.
Compared to background technology, two-way transmission apparatus according to the present invention has following advantages:
(1) two-way transmission apparatus of the present invention realizes the transmitted in both directions of half-duplex control signal with the framework of low cost, and can not mutually disturb during two-way signaling alternate transmission, therefore can improve the higher problem of cost that background technology need adopt application-specific integrated circuit to cause.
(2) two-way transmission apparatus of the present invention can be applicable to have in the signal transmission system of signal extender or Signal Booster, and provides elastomeric compensation mechanism by setting up signal compensation unit.
(3) because two-way transmission apparatus of the present invention does not need to be operated by the mode of sequencing control, the problem of the data latching caused of feedbacking once the wrong signal of sequencing control can be solved in background technology.
By the above detailed description of preferred embodiments, it is desirable to clearly to describe feature of the present invention and spirit, and not with above-mentioned disclosed preferred embodiment, category of the present invention is limited.On the contrary, its objective is wish to contain various change and tool equality be arranged in the present invention institute in the category of the scope of the claims applied for.
Claims (17)
1. a two-way transmission apparatus, comprises:
One first arithmetic device, has a first input end and one first output; And
One second arithmetic device, there is one the 3rd input, a four-input terminal and one second output, 3rd input couples this first input end of this first arithmetic device, this four-input terminal couples this first output of this first arithmetic device, wherein this four-input terminal receives one first input signal, and exports one first output signal from this second output.
2. two-way transmission apparatus as claimed in claim 1, it is characterized in that, when this first input signal inputs to this second arithmetic device, namely this first input signal cannot input to this first arithmetic device simultaneously.
3. two-way transmission apparatus as claimed in claim 1, it is characterized in that, this first arithmetic device also has one second input, and this second input is coupled to earth terminal.
4. two-way transmission apparatus as claimed in claim 1, it is characterized in that, this first input signal received by the four-input terminal of this second arithmetic device has positive voltage, and this first output signal that this second output exports has negative voltage.
5. two-way transmission apparatus as claimed in claim 4, is characterized in that, comprise further:
One converting unit, couples this second output of this second arithmetic device, in order to this first output signal with negative voltage is converted back this first input signal with positive voltage and exports.
6. two-way transmission apparatus as claimed in claim 1, it is characterized in that, this first input signal is half duplex control signals.
7. two-way transmission apparatus as claimed in claim 6, it is characterized in that, this half-duplex control signal is an inter-integrated circuit control signal, USB 1.1 control signal or USB 2.0 control signal.
8. two-way transmission apparatus as claimed in claim 5, it is characterized in that, be applied in a signal extender, this signal extender comprises a delivery module, a pair transmission line and a receiver module, this is coupled between this delivery module and this receiver module to transmission line, this two-way transmission apparatus is respectively arranged with in this delivery module and this receiver module, this first input signal is exported to this wherein transmission line to transmission line by this converting unit of this two-way transmission apparatus of this delivery module, this two-way transmission apparatus of this receiver module receives this first input signal from this transmission line.
9. two-way transmission apparatus as claimed in claim 8, it is characterized in that, in this two-way transmission apparatus of this receiver module, this first input end of this first arithmetic device receives this first input signal from this transmission line, and export this first input signal by this first output, 3rd input of this second arithmetic device same receives this first input signal from this transmission line, and this four-input terminal receives this first input signal from this first output of this first arithmetic device, wherein the 3rd input of this second arithmetic device and four-input terminal are respectively a positive input terminal and a negative input end, now this second output of this second arithmetic device can not export any signal.
10. two-way transmission apparatus as claimed in claim 8, is characterized in that, this is a pair twisted-pair feeder in a CAT5 cable to transmission cable.
11. two-way transmission apparatus as claimed in claim 8, it is characterized in that, this delivery module receives this first input signal from a signal original device, and by this, by this first input signal, receiver module is reached to a wherein transmission line of transmission line, and this receiver module exports this first input signal to a signal output apparatus, this receiver module also can receive one second input signal from this signal output apparatus, and exports this signal original device to after this second input signal being reached this delivery module by this to another transmission line of transmission line.
12. two-way transmission apparatus as claimed in claim 8, it is characterized in that, this delivery module receives this first input signal from a USB master control set, and by this, by this first input signal, receiver module is reached to a wherein transmission line of transmission line, and this receiver module exports this first input signal to a USB controlled device, this receiver module also can receive one second input signal from this USB controlled device and export this USB master control set to after this second input signal being reached this delivery module by this to another transmission line of transmission line.
13. two-way transmission apparatus as claimed in claim 1, it is characterized in that, the 3rd input of this second arithmetic device and four-input terminal are respectively a positive input terminal and a negative input end.
14. two-way transmission apparatus as claimed in claim 5, it is characterized in that, be applied in a Signal Booster, this Signal Booster comprises a delivery module and a receiver module, this two-way transmission apparatus is respectively arranged with in this delivery module and this receiver module, this converting unit of this two-way transmission apparatus of this delivery module couples this first input end of this first arithmetic device of this two-way transmission apparatus of this receiver module, this converting unit of this two-way transmission apparatus of this receiver module couples this first input end of this first arithmetic device of this two-way transmission apparatus of this delivery module.
15. two-way transmission apparatus as claimed in claim 14, it is characterized in that, in this two-way transmission apparatus of this receiver module, this first input end of this first arithmetic device receives this first input signal from delivery module, and export this first input signal by the first output, 3rd input of this second arithmetic device same receives this first input signal from this delivery module, and this four-input terminal receives this first input signal from this first output of this first arithmetic device, wherein the 3rd input of this second arithmetic device and four-input terminal are respectively a positive input terminal and a negative input end, now this second output of this second arithmetic device can not export any signal.
16. two-way transmission apparatus as claimed in claim 14, it is characterized in that, this delivery module receives this first input signal from a signal original device, and this receiver module exports this first input signal to a signal output apparatus, this receiver module also can receive one second input signal from this signal output apparatus, and exports this signal original device to after this second input signal is reached this delivery module.
17. two-way transmission apparatus as claimed in claim 1, is characterized in that, comprise further:
Multiple signal compensation unit, couples this first output of this first arithmetic device respectively, and is coupled between this first input end of this first arithmetic device and the 3rd input of this 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 true CN104869343A (en) | 2015-08-26 |
| CN104869343B CN104869343B (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410445256.3A Active CN104869343B (en) | 2014-02-25 | 2014-09-03 | Bidirectional transmission device |
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| Country | Link |
|---|---|
| CN (1) | CN104869343B (en) |
| TW (1) | TWI556650B (en) |
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| KR100295427B1 (en) * | 1999-04-14 | 2001-07-12 | 정명식 | Impedance matched current-mode bidirectional input/output buffer |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201534124A (en) | 2015-09-01 |
| CN104869343B (en) | 2018-02-02 |
| TWI556650B (en) | 2016-11-01 |
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