CN105900345B - A kind of signal processing circuit - Google Patents
A kind of signal processing circuit Download PDFInfo
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- CN105900345B CN105900345B CN201480034149.XA CN201480034149A CN105900345B CN 105900345 B CN105900345 B CN 105900345B CN 201480034149 A CN201480034149 A CN 201480034149A CN 105900345 B CN105900345 B CN 105900345B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
Abstract
The present invention discloses a kind of signal processing circuit, it include: AD/VD digital front-end, G.fast digital front-end, first conversion circuit, second conversion circuit, first driving circuit and the first hybrid circuit, first transformer, wherein, AD/VD digital front-end and the G.fast digital front-end are connected with one end of one end of the first conversion circuit and the second conversion circuit respectively, the other end of first conversion circuit is connected with one end of the first driving circuit, the other end of first driving circuit is connected with one end of the first hybrid circuit, the other end of second conversion circuit is connected with the other end of the first hybrid circuit, the other end of first hybrid circuit is connected with one end of the first transformer.The two different business models of G.fast and VDSL2 can coexist in same cable for the circuit, and low frequency and the common bearer service of high frequency can be used, and improve business efficiency, and it is small that the circuit structure is simple, number of devices lacks size, be convenient for being laid out.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of signal processing circuit.
Background technique
The frequency spectrum range of definition of G.Fast is 2.2M~106M and 2.2M~212M, is time division multiplexing (TDD),
The frequency spectrum range of definition of VDSL2 is 25k~8.8M/17.664M/30M, is frequency division multiplexing mode (FDD).It is carried out when to G.Fast
When laying, the user that has in the same cable may be also in the business using VDSL2, and since G.fast and VDSL2 are two kinds
Different business models, their character rate, frequency range, Tone space are different from, and can not carry out Vector counteracting,
In the prior art, to avoid the two mutual crosstalk in same cable, as shown in Figure 1, G.fast needs to remove the frequency of VDSL2
Section, only uses high band bearer service, this mode is greatly reduced service rate.
Summary of the invention
The embodiment of the present invention provides a kind of signal processing circuit, which can be by G.fast and the two different industry of VDSL2
Business mode coexists in same cable, and low frequency and the common bearer service of high frequency can be used, and improves business efficiency.
In a first aspect, the embodiment of the present invention provides a kind of signal processing circuit, comprising: AD/VD digital front-end, G.fast number
Word front end, the first conversion circuit, the second conversion circuit, the first driving circuit and the first hybrid circuit, the first transformer, wherein
The AD/VD digital front-end and the G.fast digital front-end respectively with one end of first conversion circuit and
One end of two conversion circuits is connected, and the other end of first conversion circuit is connected with one end of first driving circuit, institute
The other end for stating the first driving circuit is connected with the other end of first hybrid circuit, the other end of second conversion circuit
It is connected with one end of first hybrid circuit, one end phase of the other end of first hybrid circuit and first transformer
Even.
With reference to first aspect, in the first possible implementation of the first aspect, first conversion circuit includes:
First low-pass filter, the first digital analog converter, the first variable gain amplifier and adder, wherein
One end of first low-pass filter is connected with the AD/VD digital front-end, first low-pass filter
The other end is connected with one end of the adder, one end phase of the other end of the adder and first digital analog converter
Even, one end of the adder is connected with the G.fast digital front-end, one end of first digital analog converter also with it is described
G.fast digital front-end is connected, and the other end of first digital analog converter is connected with one end of first digital analog converter,
The other end of first digital analog converter is connected with one end of first variable gain amplifier.
With reference to first aspect, in the second possible implementation of the first aspect, second conversion circuit includes:
Second low-pass filter, third low-pass filter, the first A-D converter, the second A-D converter, the first programmable-gain are put
Big device, the second programmable gain amplifier and the first high-pass filter, wherein
One end of second low-pass filter is connected with the AD/VD digital front-end, and second low-pass filter is another
One end is connected with one end of first A-D converter, and the other end of first A-D converter is programmable with described first
One end of gain amplifier is connected, and third low-pass filter described in the other end of first programmable gain amplifier is connected,
One end of second A-D converter is connected with the G.fast digital front-end, the other end of second A-D converter with
One end of second programmable gain amplifier is connected, the other end of second programmable gain amplifier and described first
One end of high-pass filter is connected.
With reference to first aspect or second of possible implementation of first aspect, the third in first aspect can
Can embodiment in, second programmable gain amplifier, comprising: low-noise amplifier, first resistor/capacitance network,
Second resistance/capacitance network and 3rd resistor/capacitance network, in which:
The low-noise amplifier is in parallel with the first resistor/capacitance network, one end of the low-noise amplifier with
The other end of second analog-digital converter is connected, the other end of the low-noise amplifier and the second resistance/capacitor net
One end of network is connected, or is connected with one end of the 3rd resistor/capacitance network, the second resistance/capacitance network it is another
One end is connected with one end of first high-pass filter, and the other end of the 3rd resistor/capacitance network is mixed with described first
The one end for closing circuit is connected.
It, can at the 4th kind of first aspect with reference to first aspect or in the third possible embodiment of first aspect
In the embodiment of energy, the other end of the 3rd resistor/capacitance network is connected with one end of the attenuation network, the decaying
The other end of network is connected with the other end of first hybrid circuit.
With reference to first aspect or the first possible implementation of first aspect, the 5th kind in first aspect can
In the implementation of energy, first conversion circuit further include: the second digital analog converter, the second variable gain amplifier, the 4th
Low-pass filter, the second high-pass filter, wherein
One end of second digital analog converter with the first low-pass filter the other end be connected, second digital-to-analogue turn
The other end of parallel operation is connected with one end of second variable gain amplifier, the other end of second variable gain amplifier
It is connected with one end of the 4th low-pass filter, one end of second high-pass filter and first variable gain are amplified
The other end of device is connected, and the other end of the 4th low-pass filter and the other end of second high-pass filter are combined.
With reference to first aspect and the first possible implementation of first aspect, the 6th kind in first aspect can
In the implementation of energy, further includes: the second hybrid circuit, wherein
The other end of first high-pass filter is connected with one end of second hybrid circuit, the second mixing electricity
The other end on road is connected with one end of first transformer, and the another end of second hybrid circuit mixes electricity with described first
The one end on road is connected.
With reference to first aspect, in a seventh possible implementation of the first aspect, further includes: the second driving circuit,
Third hybrid circuit and the second transformer, wherein
One end of second driving circuit is connected with the other end of first conversion circuit, second driving circuit
The other end be connected with one end of the third hybrid circuit, the other end of the third hybrid circuit and second transformer
It is connected.
The possible implementation of with reference to first aspect the first, in the 8th kind of possible implementation of first aspect
In, first conversion circuit further include: the second digital analog converter and the second variable gain amplifier, wherein
One end of second digital analog converter is connected with the other end of first low-pass filter, second digital-to-analogue
The other end of converter is connected with one end of second variable gain amplifier.
The 5th kind of possible implementation with reference to first aspect, in the 9th kind of possible implementation of first aspect
In, further includes: the second driving circuit, third hybrid circuit and the second transformer, wherein
One end of second driving circuit is connected with the other end of the 4th low-pass filter, the second driving electricity
The other end on road is connected with one end of the third hybrid circuit, the other end of the third hybrid circuit and second transformation
One end of device is connected.
8th kind of possible realization side of the 6th kind of possible implementation or first aspect with reference to first aspect
Formula, in the tenth kind of possible implementation of first aspect, further includes: the second driving circuit, third hybrid circuit and second
Transformer, wherein
One end of second driving circuit is connected with the other end of second variable gain amplifier, and described second drives
The other end of dynamic circuit is connected with one end of the third hybrid circuit, the other end of the third hybrid circuit and described second
One end of transformer is connected.
Signal processing circuit provided in an embodiment of the present invention, the circuit can be by G.fast and the two different business of VDSL2
Mode coexists in same cable, and low frequency and the common bearer service of high frequency can be used, and improves business efficiency, the circuit structure
Simply, it is small to lack size for number of devices, is convenient for being laid out.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is prior art G.fast and VDSL2 frequency range schematic diagram；
Fig. 2 is first embodiment of the invention signal processing circuit structure schematic diagram；
Fig. 3 is first embodiment of the invention low-pass filter and circuit of high pass filter structural schematic diagram；
Fig. 4 is first embodiment of the invention G.fast Only mode circuit structural schematic diagram；
Fig. 5 is another G.fast Only mode circuit structural schematic diagram of first embodiment of the invention；
Fig. 6 is second embodiment of the invention signal processing circuit structure schematic diagram；
Fig. 7 is third embodiment of the invention signal processing circuit structure schematic diagram；
Fig. 8 is a kind of signal processing circuit structure schematic diagram of fourth embodiment of the invention；
Fig. 9 is another signal processing circuit structure schematic diagram of fourth embodiment of the invention；
Figure 10 is fifth embodiment of the invention signal processing circuit structure schematic diagram；
Figure 11 is sixth embodiment of the invention signal processing circuit structure schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Fig. 2 is referred to, is first embodiment of the invention signal processing circuit structure schematic diagram, comprising: AD/VD digital front-end
10, G.fast digital front-end 20, the first conversion circuit 11, the second conversion circuit 21, the first driving circuit 12 and the first mixing electricity
Road 13, the first transformer 14, wherein
AD/VD digital front-end 10 and G.fast digital front-end 20 are converted with one end of the first conversion circuit 11 and second respectively
One end of circuit 21 is connected, and the other end of first conversion circuit 12 is connected with one end of the first driving circuit 12, and first drives
The other end of dynamic circuit 12 is connected with one end of the first hybrid circuit 13, and the other end of the second conversion circuit 21 mixes electricity with first
The one end on road 13 is connected, and the other end of the first hybrid circuit 13 is connected with the first transformer 14.
First conversion circuit 11 includes: the first low-pass filter, the first digital analog converter, the amplification of the first variable gain
Device and adder, wherein
One end of first low-pass filter is connected with the AD/VD digital front-end, first low-pass filter
The other end is connected with one end of the adder, one end phase of the other end of the adder and first digital analog converter
Even, one end of the adder is connected with the G.fast digital front-end, one end of first digital analog converter also with it is described
G.fast digital front-end is connected, and the other end of first digital analog converter is connected with one end of first digital analog converter,
The other end of first digital analog converter is connected with one end of first variable gain amplifier.
Second conversion circuit 21 include: the second low-pass filter, third low-pass filter, the first A-D converter,
Second A-D converter, the first programmable gain amplifier, the second programmable gain amplifier and the first high-pass filter,
In,
One end of second low-pass filter is connected with the AD/VD digital front-end, and second low-pass filter is another
One end is connected with one end of first A-D converter, and the other end of first A-D converter is programmable with described first
One end of gain amplifier is connected, and third low-pass filter described in the other end of first programmable gain amplifier is connected,
One end of second A-D converter is connected with the G.fast digital front-end, the other end of second A-D converter with
One end of second programmable gain amplifier is connected, the other end of second programmable gain amplifier and described first
One end of high-pass filter is connected.
It should be appreciated that the first hybrid circuit 13 has the characteristic of Echo Cancellation, sends signal and pass through the first hybrid circuit 13
After decay, therefore filter can simplify design, and the device size of circuit is small, quantity is few, facilitates layout, reduces the function of circuit
Consumption and cost.
A kind of implementation of low-pass filter and high-pass filter is as shown in figure 3, resistance R2197/R2198 and R2222/
On the one hand R2223 can form filter with the receiving path equivalent impedance of Hybrid circuit (Chinese: hybrid circuit)
Beginning impedance, on the other hand the resistance can reduce influencing each other between LPF and HPF, if the frequency of different mode filter
Point difference can design one or more groups of low-pass filters and high-pass filter, to switch over selection.
Due to supporting the port of VDSL2 and G.fast mixing application, also want to support G.fast Only mode, therefore want
Support the Bypass of high-pass filter, a kind of implementation for supporting HPF Bypass as shown in Figure 4: the second programmable-gain is put
Low-noise amplifier in big device can choose by the signal of high-pass filter or not by the original complete of high-pass filter
Band signal.
Certainly, in the other embodiment of the embodiment of the present invention, support that G.fast Only mode can also be just like Fig. 5
Shown in scheme, Fig. 5 is that attenuation network is added on the basis of fig. 4.
Signal processing circuit provided in an embodiment of the present invention, the circuit can be by G.fast and the two different business of VDSL2
Mode coexists in same cable, and low frequency and the common bearer service of high frequency can be used, and improves business efficiency, the circuit structure
Simply, it is small to lack size for number of devices, is convenient for being laid out.
Fig. 6 is referred to, is second embodiment of the invention signal processing circuit structure schematic diagram, Fig. 6 is the optimization of Fig. 2, is removed
It include outside structure shown in Fig. 2, further includes:
First conversion circuit 11 further include: the second digital analog converter, the second variable gain amplifier, the 4th low-pass filtering
Device, the second high-pass filter, wherein one end of second digital analog converter with the first low-pass filter other end phase
Even, the other end of second digital analog converter is connected with one end of second variable gain amplifier, and described second is variable
The other end of gain amplifier is connected with one end of the 4th low-pass filter, one end of second high-pass filter and institute
The other end for stating the first variable gain amplifier is connected, the other end of the 4th low-pass filter and second high-pass filtering
The other end of device is combined.
Signal processing circuit provided in an embodiment of the present invention, the circuit can be by G.fast and the two different business of VDSL2
Mode coexists in same cable, and low frequency and the common bearer service of high frequency can be used, and improves business efficiency, the circuit structure
Simply, it is small to lack size for number of devices, is convenient for being laid out.
Fig. 7 is referred to, is third embodiment of the invention signal processing circuit structure schematic diagram, the circuit in Fig. 7 is Fig. 2 electricity
The optimization on road, the transmission power of VDSL2 can be improved in the circuit in Fig. 7, other than structure shown in Fig. 2, further includes: second is mixed
Close circuit 22, wherein
The other end of first high-pass filter is connected with one end of second hybrid circuit 22, second mixing
The other end of circuit 22 is connected with one end of first transformer, the another end of second hybrid circuit 22 and described first
One end of hybrid circuit 13 is connected.
It is understood that above scheme can support the mixed mode of VDSL2 and G.fast, pure VDSL2 mode and pure
G.fast mode (HPF Bypass).Since G.fast and VDSL2 shares Line Driver, the transmission power of VDSL2 is not achieved
The requirement of standard, but use the user of G.fast all closer with a distance from equipment, therefore VDSL2 sends that power is slightly lower also can
Meet the bandwidth demand of user.
Signal processing circuit provided in an embodiment of the present invention, the circuit can be by G.fast and the two different business of VDSL2
Mode coexists in same cable, and low frequency and the common bearer service of high frequency can be used, and improves business efficiency, the circuit structure
Simply, it is small to lack size for number of devices, is convenient for being laid out.
In addition, scheme such as Fig. 8 of another transmission power for improving VDSL2 of the embodiment of the present invention shows, on the basis of Fig. 2
On further include: the second driving circuit 15, third hybrid circuit 23 and the second transformer 24, wherein
One end of second driving circuit 15 is connected with the other end of first conversion circuit 11, second driving
The other end of circuit 15 is connected with one end of the third hybrid circuit 23, the other end of the third hybrid circuit 23 with it is described
Second transformer 24 is connected.
When needing work in pure VDSL2 mode as shown in figure 9, working as user, and needing the big transmission power of standard, second turn
The first programmable gain amplifier changed in circuit 21 is connected with third hybrid circuit 23, can be obtained the hair of the VDSL2 of standard
Send power.
Signal processing circuit provided in an embodiment of the present invention, the circuit can be by G.fast and the two different business of VDSL2
Mode coexists in same cable, and low frequency and the common bearer service of high frequency can be used, and improves business efficiency, the circuit structure
Simply, it is small to lack size for number of devices, is convenient for being laid out.
Referring to Figure 10, it is fifth embodiment of the invention signal processing circuit structure schematic diagram, on the basis of the structure of Fig. 6
On, further includes: the second driving circuit 15, third hybrid circuit 23 and the second transformer 24, wherein
One end of second driving circuit 15 is connected with the other end of the 4th low-pass filter, second driving
The other end of circuit 15 is connected with one end of the third hybrid circuit 23, the other end of the third hybrid circuit 23 with it is described
One end of second transformer 24 is connected.
Referring to Figure 11, it is sixth embodiment of the invention signal processing circuit structure schematic diagram, on the basis of Fig. 7 structure
On, further includes: the second driving circuit 15, third hybrid circuit 23 and the second transformer 24, wherein
One end of second driving circuit 15 is connected with the other end of second variable gain amplifier, and described second
The other end of driving circuit 15 is connected with one end of the third hybrid circuit 23, the other end of the third hybrid circuit 23 with
One end of second transformer 24 is connected.
In addition, the first conversion circuit 11 needs include: in the embodiment of the present invention: the second digital analog converter and the second variable increasing
Beneficial amplifier, wherein
One end of second digital analog converter is connected with the other end of first low-pass filter, second digital-to-analogue
The other end of converter is connected with one end of second variable gain amplifier.
It should be appreciated that the first programmable gain amplifier can mix electricity with third when needing the big transmission power of standard
Road 23 is connected, and the other end of the second programmable gain amplifier is connected with the second hybrid circuit 22.
Signal processing circuit provided in an embodiment of the present invention, the circuit can be by G.fast and the two different business of VDSL2
Mode coexists in same cable, and low frequency and the common bearer service of high frequency can be used, and improves business efficiency, the circuit structure
Simply, it is small to lack size for number of devices, is convenient for being laid out.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.These modifications and changes of the present invention within the scope of the claims of the present invention and its equivalent technology, then this
Invention is also intended to include these modifications and variations.
Claims (11)
1. a kind of signal processing circuit characterized by comprising AD/VD digital front-end, G.fast digital front-end, the first conversion
Circuit, the second conversion circuit, the first driving circuit and the first hybrid circuit, the first transformer, wherein
The AD/VD digital front-end and the G.fast digital front-end respectively with one end of first conversion circuit and second turn
The one end for changing circuit is connected, and the other end of first conversion circuit is connected with one end of first driving circuit, and described the
The other end of one drive circuit is connected with one end of first hybrid circuit, the other end of second conversion circuit with it is described
The other end of first hybrid circuit is connected, and the another end of first hybrid circuit is connected with one end of first transformer.
2. signal processing circuit as described in claim 1, which is characterized in that
First conversion circuit includes: the first low-pass filter, the first digital analog converter, the first variable gain amplifier and adds
Musical instruments used in a Buddhist or Taoist mass, wherein
One end of first low-pass filter is connected with the AD/VD digital front-end, first low-pass filter it is another
End is connected with an input terminal of the adder, one end phase of the output end of the adder and first digital analog converter
Even, another input terminal of the adder is connected with the G.fast digital front-end, the other end of first digital analog converter
It is connected with one end of first variable gain amplifier.
3. signal processing circuit as described in claim 1, which is characterized in that
Second conversion circuit includes: the second low-pass filter, third low-pass filter, the first A-D converter, the second mould
A/D converter, the first programmable gain amplifier, the second programmable gain amplifier and the first high-pass filter, wherein
One end of second low-pass filter is connected with the AD/VD digital front-end, the second low-pass filter other end
It is connected with one end of first A-D converter, the other end of first A-D converter and first programmable-gain
One end of amplifier is connected, and third low-pass filter described in the other end of first programmable gain amplifier is connected, described
One end of second A-D converter is connected with the G.fast digital front-end, the other end of second A-D converter with it is described
One end of second programmable gain amplifier is connected, the other end of second programmable gain amplifier and first high pass
One end of filter is connected.
4. signal processing circuit as claimed in claim 3, which is characterized in that second programmable gain amplifier, comprising:
Low-noise amplifier, first resistor/capacitance network, second resistance/capacitance network and 3rd resistor/capacitance network, in which:
The low-noise amplifier is in parallel with the first resistor/capacitance network, one end of the low-noise amplifier with it is described
The other end of second A-D converter is connected, the other end of the low-noise amplifier and the second resistance/capacitance network
One end is connected, or is connected with one end of the 3rd resistor/capacitance network, the other end of the second resistance/capacitance network
It is connected with one end of first high-pass filter, the other end of the 3rd resistor/capacitance network mixes electricity with described first
The other end on road is connected.
5. signal processing circuit as claimed in claim 3, which is characterized in that second programmable gain amplifier, comprising:
Low-noise amplifier, first resistor/capacitance network, second resistance/capacitance network and 3rd resistor/capacitance network, in which:
The low-noise amplifier is in parallel with the first resistor/capacitance network, one end of the low-noise amplifier with it is described
The other end of second A-D converter is connected, the other end of the low-noise amplifier and the second resistance/capacitance network
One end is connected, or is connected with one end of the 3rd resistor/capacitance network, the other end of the second resistance/capacitance network
It is connected with one end of first high-pass filter；
The other end of the 3rd resistor/capacitance network is connected with one end of attenuation network, the other end of the attenuation network with
The another end of first hybrid circuit is connected.
6. signal processing circuit as described in claim 1, which is characterized in that first conversion circuit further include: first is low
Bandpass filter, the first digital analog converter, the first variable gain amplifier, the second digital analog converter, the second variable gain amplifier,
4th low-pass filter, the second high-pass filter, wherein
One end of first low-pass filter is connected with the AD/VD digital front-end, one end of second digital analog converter
With the first low-pass filter the other end be connected, the other end of second digital analog converter is put with second variable gain
One end of big device is connected, and the other end of second variable gain amplifier is connected with one end of the 4th low-pass filter,
One end of second high-pass filter is connected with the other end of first variable gain amplifier, the 4th low-pass filtering
The other end of the other end of device and second high-pass filter is combined；
One end of first digital analog converter is connected with the G.fast digital front-end, first digital analog converter it is another
End is connected with one end of first variable gain amplifier.
7. signal processing circuit as claimed in claim 2, which is characterized in that first conversion circuit further includes that the second digital-to-analogue turns
Parallel operation and the second variable gain amplifier, wherein
One end of second digital analog converter is connected with the other end of first low-pass filter, second digital-to-analogue conversion
The other end of device is connected with one end of second variable gain amplifier.
8. signal processing circuit as claimed in claim 7, which is characterized in that further include: the second hybrid circuit and the first high pass
Filter, wherein
One end of first high-pass filter is connect with the second programmable gain amplifier, first high-pass filter it is another
One end is connected with one end of second hybrid circuit, and the one of the other end of second hybrid circuit and first transformer
End is connected, and the another end of second hybrid circuit is connected with one end of first hybrid circuit.
9. signal processing circuit as claimed in claim 7, which is characterized in that further include: the second driving circuit, third mixing electricity
Road and the second transformer, wherein one end of the second variable gain amplifier in the first conversion circuit, in the first conversion circuit
The second digital analog converter connection；
The other end phase of the second variable gain amplifier in one end of second driving circuit, with first conversion circuit
Even, the other end of second driving circuit is connected with one end of the third hybrid circuit, the third hybrid circuit it is another
One end is connected with second transformer.
10. signal processing circuit as claimed in claim 6, which is characterized in that further include: the second driving circuit, third mixing
Circuit and the second transformer, wherein
One end of second driving circuit is connected with the other end of the 4th low-pass filter, second driving circuit
The other end is connected with one end of the third hybrid circuit, the other end of the third hybrid circuit and second transformer
One end is connected.
11. the signal processing circuit as described in claim 7 or 9, which is characterized in that further include: the second driving circuit, third are mixed
Close circuit and the second transformer, wherein
One end of second driving circuit is connected with the other end of second variable gain amplifier, the second driving electricity
The other end on road is connected with one end of the third hybrid circuit, the other end of the third hybrid circuit and second transformation
One end of device is connected.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/093013 WO2016086384A1 (en) | 2014-12-04 | 2014-12-04 | Signal processing circuit |
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| CN105900345A CN105900345A (en) | 2016-08-24 |
| CN105900345B true CN105900345B (en) | 2019-04-19 |
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| CN201480034149.XA Active CN105900345B (en) | 2014-12-04 | 2014-12-04 | A kind of signal processing circuit |
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| WO (1) | WO2016086384A1 (en) |
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| CN109962722B (en) * | 2017-12-26 | 2021-01-05 | 华为技术有限公司 | Transmitting device and signal transmission method |
| CN108023796B (en) * | 2018-01-12 | 2023-05-16 | 上海联虹技术有限公司 | Client terminal device, signal switching control method, control device, and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101292437A (en) * | 2005-10-03 | 2008-10-22 | 吉歌西米导体有限公司 | Multi-wideband communications over power lines |
| CN101572639A (en) * | 2008-04-30 | 2009-11-04 | 深圳华为通信技术有限公司 | Method, device and system for processing voice service |
| WO2014026617A1 (en) * | 2012-08-15 | 2014-02-20 | Huawei Technologies Co., Ltd. | Traffic-adaptive repeated transmission |
-
2014
- 2014-12-04 WO PCT/CN2014/093013 patent/WO2016086384A1/en active Application Filing
- 2014-12-04 CN CN201480034149.XA patent/CN105900345B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101292437A (en) * | 2005-10-03 | 2008-10-22 | 吉歌西米导体有限公司 | Multi-wideband communications over power lines |
| CN101572639A (en) * | 2008-04-30 | 2009-11-04 | 深圳华为通信技术有限公司 | Method, device and system for processing voice service |
| WO2014026617A1 (en) * | 2012-08-15 | 2014-02-20 | Huawei Technologies Co., Ltd. | Traffic-adaptive repeated transmission |
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| Publication number | Publication date |
|---|---|
| WO2016086384A1 (en) | 2016-06-09 |
| CN105900345A (en) | 2016-08-24 |
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