CN104104626A - Drive unit, related transmission system and current driving method - Google Patents
Drive unit, related transmission system and current driving method Download PDFInfo
- Publication number
- CN104104626A CN104104626A CN201310127748.3A CN201310127748A CN104104626A CN 104104626 A CN104104626 A CN 104104626A CN 201310127748 A CN201310127748 A CN 201310127748A CN 104104626 A CN104104626 A CN 104104626A
- Authority
- CN
- China
- Prior art keywords
- current
- positive
- drive
- negative
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
A drive unit for a transmission system contains a first conversion module, a control unit, a second conversion module and a negative current generation unit. The first conversion module contains a current source unit which is used for generating a first current and a second current according to a current indication signal in an input signal. The control unit is used for generating a control signal according to a level signal in the input signal. The second conversion module contains a positive current generation unit used for generating a positive drive current at a positive transmission end within a first time interval according to the control signal and the first current. The negative current generation unit is used for generating a negative drive current within a second time interval according to the control signal and the second current. The first time interval and the second time interval don't overlap.
Description
Technical field
The present invention is relevant to a kind of drive unit for transmission system, espespecially a kind of drive unit that can reduce average driving current in transmission system.
Background technology
Along with scientific and technological progress, the application of network is more and more extensive, has become a part indispensable in people's daily life.And for example, because diverse network application (multimedia application on line) is more and more stricter to the requirement of frequency range, therefore more than the speed of network equipment is also gradually promoted to 1000Mbs (that is 1Gbs) by 10/100Mbs.Under different speed, network equipment is in the time driving transmission line (transmission line), and the signal on transmission line has the different amplitudes of oscillation.Generally speaking,, according to the difference of type of drive, the driving method of the transmitting device in network equipment can be divided into current-mode (current mode) and voltage mode (voltage mode).
In the time that the transmitting device in network equipment is realized with current-mode, transmitting device need to drive a transformer (transformer) with a large amount of drive currents, to reach the object that drives transmission line.But no matter whether transmitting device needs to change the signal on transmission line, the transmitting device in conventional art can by the electric current total amount normality of driving transformer maintain a considerable definite value.In other words,, when the input of network equipment does not have signal feed-in and transmitting device while not needing the signal on modulation transmission line, transmitting device still can continue to produce a large amount of electric currents, thereby has wasted significant power consumption.Hence one can see that, the real necessity that has improvement of conventional art.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of drive unit that can reduce average driving current in transmission system.
The present invention discloses a kind of drive unit, is applied in a transmission system, and this drive unit includes one first modular converter, includes a current source cell, is used for according to a current indicating signal in an input signal, produces one first electric current and one second electric current; And a control unit, be used for according to a level signal of this input signal, produce a control signal; And one second modular converter, include a positive current generation unit, be coupled to a positive transmission end in this current source cell, this control unit and this transmission system, be used for according to this control signal and this first electric current, in a very first time interval, produce a positive drive current and give this positive transmission end; And a negative current generation unit, be coupled to a negative transmission end in this current source cell, this control unit and this transmission system, be used for according to this control signal and this second electric current, in one second time interval, produce a negative drive current and give this negative transmission end; Wherein between this very first time interval and this second time interval, mutually do not overlap.
The present invention separately discloses in a kind of transmission system, includes a transformer, is coupled between a positive transmission end and a negative transmission end of this transmission system; One resistance unit, is coupled between this Yu Gaifu transmission end, positive transmission end; And a drive unit, include one first modular converter, include a current source cell, be used for according to a current indicating signal in an input signal, produce one first electric current and one second electric current; And a control unit, be used for according to a level signal of this input signal, produce a control signal; And one second modular converter, include a positive current generation unit, be coupled to a positive transmission end in this current source cell, this control unit and this transmission system, be used for according to this control signal and this first electric current, in a very first time interval, produce a positive drive current and give this positive transmission end; And a negative current generation unit, be coupled to a negative transmission end in this current source cell, this control unit and this transmission system, be used for according to this control signal and this second electric current, in one second time interval, produce a negative drive current and give this negative transmission end; Wherein between this very first time interval and this second time interval, do not overlap mutually.
A kind of current driving method for a transmission system of the another exposure of the present invention, includes and in a very first time interval, produces a positive drive current positive transmission end in this transmission system; And in one second time interval, produce a negative drive current negative transmission end in this transmission system; Wherein between this very first time interval and this second time interval, mutually do not overlap.
Brief description of the drawings
Fig. 1 is the schematic diagram of the embodiment of the present invention one transmission system.
Fig. 2 is the schematic diagram of transmission system one implementation shown in Fig. 1.
The schematic diagram of coherent signal when Fig. 3 is the transmission system running shown in Fig. 2.
Fig. 4 is the schematic diagram of another implementation of transmission system shown in Fig. 1.
The schematic diagram of coherent signal when Fig. 5 is the transmission system running shown in Fig. 4.
Fig. 6 is the schematic diagram of the embodiment of the present invention one current driving method.
10 transmission systems
100 transformers
102 resistance units
104 drive units
106 first modular converters
108 second modular converters
110 current source cells
112 control units
114 positive current generation units
116 negative current generation units
60 current driving methods
600～606 steps
B[n:0] bit
CIS current indicating signal
CON control signal
CTXN, CTXP signal
DAC analog-digital converter
DIN input signal
GND ground end
ITX1～ITX4 electric current
ITXN bears drive current
The positive drive current of ITXP
LD1, LD2 line drive
MN1, MN2 N-type metal-oxide half field effect transistor
RL impedance
SW1～SW6 switch
TXN bears transmission end
The positive transmission end of TXP
VIS level signal
Embodiment
Please refer to Fig. 1, Fig. 1 is the schematic diagram of the embodiment of the present invention one transmission system 10.Transmission system 10 is used for according to an input signal DIN, drives a transmission line (this figure is the equiva lent impedance that represents transmission line with an impedance RL).As shown in Figure 1, transmission system 10 includes a transformer (Transformer) 100, a resistance unit 102 and a drive unit 104.The two ends of transformer 100 are respectively coupled to positive transmission end TXPJi Fu transmission end TXN, are used for, according to positive drive current ITXP and negative drive current ITXN, driving transmission line.Resistance unit 102 is coupled to positive transmission end TXPJi Fu transmission end TXN, is used for the impedance RL of matched transmission line.Drive unit 104 includes one first modular converter 106 and one second modular converter 108, is used for according to an input signal DIN, dynamically adjusts positive drive current ITXP and negative drive current ITXN.It should be noted that according to input signal DIN, drive unit 104 can not produce positive drive current ITXP and negative drive current ITXN simultaneously.Accordingly, in the time that input signal DIN instruction transmission system 10 does not need the signal on modulation transmission line, the positive drive current ITXP that the second modular converter 108 is exported and negative drive current ITXN can be zero simultaneously, thereby significantly reduce average current and the power consumption of transmission system 10.
Specifically, the first modular converter 106 includes a current source cell 110 and a control unit 112.Current source cell 110 is used for according to a current indicating signal CIS in input signal DIN, generation current ITX1, ITX2.Control unit 112 is used for according to a level signal VIS in input signal DIN, produces a control signal CON.The second modular converter 108 includes positive current generation unit 114 and negative current generation unit 116.Positive current generation unit 114 is coupled to current source cell 110, control unit 112 and positive transmission end TXP, is used for, according to control signal CON and electric current I TX1, producing positive drive current ITXP.Similarly, negative current generation unit 116 is coupled to current source cell 110, control unit 112 and negative transmission end TXN, is used for according to control signal CON and electric current I TX2, produces negative drive current ITXN.
In the time that in input signal DIN, level indicating signal VIS instruction promotes the voltage level of transmission line, control unit 112 is by adjusting control signal CON, negative current generation unit 116 is decommissioned, and make positive current generation unit 114 produce positive drive current ITXP according to electric current I TX1.Relatively, in the time that in input signal DIN, level indicating signal VIS instruction reduces the voltage level of transmission line, control unit 112, by adjusting control signal CON, decommissions positive current generation unit 114, and makes negative current generation unit 116 produce negative drive current ITXN according to electric current I TX2.In addition,, in the time that in input signal DIN, level indicating signal VIS instruction does not change the voltage level of transmission line, control unit 112, by adjusting control signal CON, decommissions positive current generation unit 114 and negative current generation unit 116 simultaneously.Accordingly, according to control signal CON, the drive unit positive drive current ITXP of 104 capable of dynamic adjustment and negative drive current ITXN.It should be noted that, for example, due in the time that in input signal DIN, level indicating signal VIS instruction does not change the voltage level of transmission line (when in input signal DIN, non-avaible need to transmit), positive drive current ITXP and negative drive current ITXN are zero simultaneously, and therefore the average current of drive unit 104 and power consumption all can effectively decline.
Please refer to Fig. 2, Fig. 2 is the schematic diagram of transmission system 10 1 execution modes shown in Fig. 1.As shown in Figure 2, current source cell 110 is realized with a digital analog converter DAC, positive current generation unit 114 includes switch SW 1, SW2 and line drive (Line Driver) LD1, and negative current generation unit 116 is made up of switch SW 3, SW4 and line drive LD2.In this embodiment, input signal DIN is n bit signal, include bit B[n:0], level signal VIS is the highest significant bit (MSB) (be bit B[n]) of input signal DIN, and current indicating signal CIS is the bit beyond the highest significant bit in input signal DIN (be bit B[n-1:0]).In addition, in this embodiment, bit B[n] can be directly as control signal CON.
About the detailed operation of the transmission system 10 shown in Fig. 2, illustrate as follows.Digital analog converter DAC can be according to B[n-1:0] (being current indicating signal CIS), generation current ITX1, ITX2, and export respectively positive current generation unit 114 and negative current generation unit 116 to.As bit B[n] (being level signal VIS, control signal CON) when the high logic level, switch SW 1, SW3 can disconnect and switch SW 2, SW4 can conducting.The electric current I TX2 that originally flow to negative current generation unit 116 can be directed to and hold GND, and the line drive LD1 in positive current generation unit 114 can be according to electric current I TX1, produces positive drive current ITXP.For instance, line drive LD1 can amplify electric current I TX1 one specific factor, as positive drive current ITXP, with driving transformer 100.Similarly, as bit B[n] while being low logic level, switch SW 1, SW3 can conducting and switch SW 2, SW4 can disconnect.The electric current I TX1 that originally flow to positive current generation unit 114 can be directed to and hold GND, and the line drive LD2 in negative current generation unit 116 can be according to electric current I TX2, produces negative drive current ITXN.Accordingly, positive current generation unit 114 and negative current generation unit 116 not can with time operate, and then the average current of drive unit 104 and power consumption are effectively declined.
In addition,, in conventional art, if input signal DIN is n bit signal, be used for the digital analog converter of generation current to be also necessary for n digital bit analog converter.In comparison, because the highest significant bit of input signal DIN in above-described embodiment is taken as the level signal VIS that indicates transmission-line voltage level, digital analog converter can be realized with (n-1) digital bit analog converter, thereby reduce the complexity and the cost cost that realize digital analog converter.In other words, produce positive drive current ITXP or produce the negative level signal VIS of drive current ITXN and the current indicating signal CIS of indicator current size by input signal DIN being divided into instruction, not only can reduce average current and the power consumption of drive unit 104, also can reduce the complexity and the cost cost that realize drive unit 104.
Please refer to Fig. 3, Fig. 3 is the schematic diagram of the coherent signal while operating of the transmission system 10 shown in Fig. 2.At time point T1 to time point T2, bit B[n] (being level signal VIS, control signal CON) for high logic level with indicator cock SW1, SW3 disconnection, switch SW 2, SW4 conducting.Negative current generation unit 116 does not operate, and negative drive current ITXN is zero.Positive current generation unit 114, according to electric current I TX1, produces positive drive current ITXP.Now, current source cell 110 is according to bit B[n-1:0] increase gradually electric current I TX1, the positive drive current ITXP that line drive LD1 produces can rise gradually along with electric current I TX1.Similarly, at time point T2 to time point T3, bit B[n] be still high logic level, negative current generation unit 116 does not operate, negative drive current ITXN is zero.Current source cell 110 is according to bit B[n-1:0] reduce gradually electric current I TX1, the positive drive current ITXP that therefore line drive LD1 produces can decline gradually along with electric current I TX1.
Relatively, at time point T3 to time point T4, bit B[n] (being level signal VIS, control signal CON) disconnect with indicator cock SW1, SW3 conducting, switch SW 2, SW4 for low logic level.Positive current generation unit 114 does not operate, and positive drive current ITXP is zero.Negative current generation unit 116, according to electric current I TX2, produces negative drive current ITXN.Now, current source cell 110 is according to bit B[n-1:0] increase gradually electric current I TX2, the negative drive current ITXN that line drive LD2 produces can rise gradually along with electric current I TX2.Similarly, at time point T4 to time point T5, bit B[n] be still low logic level, positive current generation unit 114 does not operate, positive drive current ITXP is zero.Current source cell 110 is according to bit B[n-1:0] reduce gradually electric current I TX2, the negative drive current ITXN that therefore line drive LD2 produces can decline gradually along with electric current I TX2.By that analogy.Should be noted, in time point T3, positive current generation unit 114 neither operates with negative current generation unit 116, and positive drive current ITXP and negative drive current ITXN are all zero.In other words, drive unit 104 on not needing modulation transmission line when signal the drive current of (as time point T3) be zero, the average current of drive unit 104 and power consumption can significantly be reduced.
It should be noted that, the spirit of above-described embodiment is according to input signal, make drive unit in transmission system in different time interval, produce positive drive current ITXP and negative drive current ITXN, thereby significantly reduce reportedly average current and the power consumption of communication system.According to different application, this area tool knows that the knowledgeable should implement suitable change and amendment according to this conventionally.For instance, please refer to Fig. 4, Fig. 4 is the schematic diagram of transmission system 10 another implementations shown in Fig. 1.As shown in Figure 4, current source cell 110 is realized with current source CS1, CS2, and control unit 112, according to level signal VIS in input signal DIN, produces signal CTXP, CTXN as control signal CON.Positive current generation unit 114 and negative current generation unit 116 are made up of switch element SWU1, SWU2 respectively.Switch element SWU1 and switch element SWU2 comprise respectively N-type metal-oxide half field effect transistor (NMOS) MN1, MN2 and switch SW 5, SW6.The operation principles of switch element SWU1 and switch element SWU2 should be this area tool and conventionally knows that the knowledgeable knows, and for the sake of clarity, is not repeated herein.According to different application, switch element SWU1 and switch element SWU2 can revise according to this, and are not limited to the implementation shown in Fig. 4.
About the transmission system 10 shown in Fig. 4, illustrate as follows.Please jointly with reference to figure 5, Fig. 5 is the schematic diagram of the coherent signal while operating of the transmission system 10 shown in Fig. 4.In time point T1 to time point T2, signal CTXN is low logic level, so that switch module SWU2 disconnects being connected between negative transmission end TXN and current source CS2, therefore bearing drive current ITXN is zero.On the other hand, signal CTXP is high logic level, so that being connected between the positive transmission end TXP of switch module SWU1 conducting and current source CS1, thereby make the electric current I TX3 of current source CS1 output become positive drive current ITXP.Current source CS1, according to current indicating signal CIS in input signal DIN, increases progressively positive drive current ITXP in proper order.Similarly, in time point T2 to time point T3, signal CTXP is that high logic level and signal CTXN are low logic level, between the positive transmission end TXP of switch module SWU1 conducting and current source CS1 be connected and switch module SWU2 disconnects being connected between negative transmission end TXN and current source CS2.The electric current I TX3 of current source CS1 output becomes positive drive current ITXP, and current source CS1 is according to current indicating signal CIS in input signal DIN, and positive drive current ITXP in proper order successively decreases.
In time point T3 to time point T4, signal CTXP is low logic level, so that switch module SWU1 disconnects being connected between positive transmission end TXP and current source CS1, therefore positive drive current ITXP is zero.On the other hand, signal CTXN is high logic level, so that being connected between the negative transmission end TXN of switch module SWU2 conducting and current source CS2, bears drive current ITXN thereby the electric current I TX4 of current source CS2 output is become.Current source CS2, according to current indicating signal CIS in input signal DIN, increases progressively negative drive current ITXN in proper order.Similarly, in time point T4 to time point T5, signal CTXN is that high logic level and signal CTXP are low logic level, switch module SWU1 disconnect between positive transmission end TXP and current source CS1 be connected and the negative transmission end TXN of switch module SWU2 conducting and current source CS2 between be connected.The electric current I TX4 of current source CS2 output becomes negative drive current ITXN, and current source CS2 is according to current indicating signal CIS in input signal DIN, successively decreases in proper order and bears drive current ITXN, by that analogy.Should be noted, in time point T3, positive drive current ITXP and negative drive current ITXN are all zero.In other words, drive unit 104 on not needing modulation transmission line when signal the drive current of (as time point T3) be zero, the average current of drive unit 104 and power consumption can significantly be reduced.
Dynamically adjust the mode of positive drive current ITXP and negative drive current ITXN about drive unit 104, can further summarize a current driving method 60.Please refer to Fig. 6, should be noted, if there is identical in fact result, current driving method 60 is not limited with the order of flow chart shown in Fig. 6.Current driving method 60 can be used for a transmission system, and includes following steps:
Step 600: start.
Step 602: produce a positive drive current positive transmission end in transmission system in a very first time interval.
Step 604: produce a negative drive current negative transmission end in transmission system in one second time interval, wherein mutually do not overlap between this very first time interval and this second time interval.
Step 606: finish.
According to current driving method 60, the drive unit capable of dynamic adjustment in transmission system is used for driving positive drive current and the negative drive current of transmission line, so that drive unit produces respectively positive drive current and negative drive current in different time interval.Accordingly, the average current of transmission system and power consumption can effectively be reduced.The detailed operating process of current driving method 60 can, with reference to above-mentioned, for the sake of clarity, be not repeated herein.
In sum, drive unit, transmission system and the adjustment of current driving method capable of dynamic that above-described embodiment proposes is used for driving positive drive current and the negative drive current of transmission line, so that the signal of drive unit on transmission line can not produce positive drive current and negative drive current while not needing modulation.Accordingly, the average current of transmission system and power consumption can effectively be reduced.
Claims (17)
1. a drive unit, is applied in a transmission system, and this drive unit includes:
One first modular converter, includes:
One current source cell, is used for according to a current indicating signal in an input signal, produces one first electric current and one second electric current; And
One control unit, is used for according to a level signal of this input signal, produces a control signal; And
One second modular converter, includes:
One positive current generation unit, is coupled to a positive transmission end in this current source cell, this control unit and this transmission system, is used for according to this control signal and this first electric current, produces a positive drive current and give this positive transmission end in a very first time interval; And
One negative current generation unit, is coupled to a negative transmission end in this current source cell, this control unit and this transmission system, is used for according to this control signal and this second electric current, produces a negative drive current and give this negative transmission end in one second time interval;
Wherein between this very first time interval and this second time interval, mutually do not overlap.
2. drive unit as claimed in claim 1, is characterized in that, this positive current generation unit includes:
A gleam of driver, is coupled to this positive transmission end;
One first switch, is coupled between this current source cell and ground end, is used for according to the link between this this current source of control signal control and ground end; And
One second switch, is coupled between this current source cell and this line drive, is used for according to the link between this this current source of control signal control and this line drive, so that this line drive produces this positive drive current to this positive transmission end according to this electric current.
3. drive unit as claimed in claim 2, is characterized in that, this level signal is the highest significant bit of this input signal.
4. drive unit as claimed in claim 2, is characterized in that, this current indicating signal is at least one remaining bits beyond the highest significant bit in this input signal.
5. drive unit as claimed in claim 1, is characterized in that, this positive current generation unit includes:
One switch element, is coupled between this current source cell and this positive transmission end, is used for according to this positive control signal, exports this electric current as this positive drive current.
6. drive unit as claimed in claim 1, is characterized in that, in the time of this level signal instruction booster tension level, this control unit is exported suitable control signal, so that this positive current generation unit produces this positive drive current to this positive transmission end.
7. drive unit as claimed in claim 1, is characterized in that, in the time that this level signal instruction reduces voltage level, this control unit is exported suitable control signal, so that this negative current generation unit produces this negative drive current to this negative transmission end.
8. drive unit as claimed in claim 1, is characterized in that, in the time that this level signal is indicated a zero voltage level, this control unit is exported suitable control signal, so that this positive current generation unit and this negative current generation unit decommission.
9. in a transmission system, include:
One transformer, is coupled between a positive transmission end and a negative transmission end of this transmission system;
One resistance unit, is coupled between this Yu Gaifu transmission end, positive transmission end; And
One drive unit, includes:
One first modular converter, includes:
One current source cell, is used for according to a current indicating signal in an input signal, produces one first electric current and one second electric current; And
One control unit, is used for according to a level signal of this input signal, produces a control signal; And
One second modular converter, includes:
One positive current generation unit, is coupled to a positive transmission end in this current source cell, this control unit and this transmission system, is used for according to this control signal and this first electric current, produces a positive drive current and give this positive transmission end in a very first time interval; And
One negative current generation unit, is coupled to a negative transmission end in this current source cell, this control unit and this transmission system, is used for according to this control signal and this second electric current, produces a negative drive current and give this negative transmission end in one second time interval;
Wherein between this very first time interval and this second time interval, mutually do not overlap.
10. transmission system as claimed in claim 9, is characterized in that, this positive current generation unit includes:
A gleam of driver, is coupled to this positive transmission end;
One first switch, is coupled between this current source cell and ground end, is used for according to the link between this this current source of control signal control and ground end; And
One second switch, is coupled between this current source cell and this line drive, is used for according to the link between this this current source of control signal control and this line drive, so that this line drive produces this positive drive current to this positive transmission end according to this electric current.
11. transmission systems as claimed in claim 10, is characterized in that, this level signal is the highest significant bit of this input signal.
12. transmission systems as claimed in claim 10, is characterized in that, this current indicating signal is at least one remaining bits beyond the highest significant bit in this input signal.
13. transmission systems as claimed in claim 9, is characterized in that, this positive current generation unit includes:
One switch element, is coupled between this current source cell and this positive transmission end, is used for according to this positive control signal, exports this electric current as this positive drive current.
14. transmission systems as claimed in claim 9, is characterized in that, in the time of this level signal instruction booster tension level, this control unit is exported suitable control signal, so that this positive current generation unit produces this positive drive current to this positive transmission end.
15. transmission systems as claimed in claim 9, is characterized in that, in the time that this level signal instruction reduces voltage level, this control unit is exported suitable control signal, so that this negative current generation unit produces this negative drive current to this negative transmission end.
16. transmission systems as claimed in claim 9, is characterized in that, in the time that this level signal is indicated a zero voltage level, this control unit is exported suitable control signal, so that this positive current generation unit and this negative current generation unit decommission.
17. 1 kinds of current driving methods for a transmission system, include:
In a very first time interval, produce a positive drive current positive transmission end in this transmission system; And
In one second time interval, produce a negative drive current negative transmission end in this transmission system;
Wherein between this very first time interval and this second time interval, mutually do not overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127748.3A CN104104626B (en) | 2013-04-12 | 2013-04-12 | Drive device and related Transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127748.3A CN104104626B (en) | 2013-04-12 | 2013-04-12 | Drive device and related Transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104104626A true CN104104626A (en) | 2014-10-15 |
| CN104104626B CN104104626B (en) | 2017-06-23 |
Family
ID=51672433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310127748.3A Active CN104104626B (en) | 2013-04-12 | 2013-04-12 | Drive device and related Transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104104626B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707969A (en) * | 2004-06-11 | 2005-12-14 | 瑞昱半导体股份有限公司 | Transmission line driver |
| CN1745535A (en) * | 2003-01-29 | 2006-03-08 | 皇家飞利浦电子股份有限公司 | Data communication using constant total current |
| CN1922839A (en) * | 2003-11-24 | 2007-02-28 | 快捷半导体有限公司 | Current transfer logic |
| US20120256661A1 (en) * | 2011-04-07 | 2012-10-11 | Hsin-Hsien Li | Current Mode Line Driver |
-
2013
- 2013-04-12 CN CN201310127748.3A patent/CN104104626B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1745535A (en) * | 2003-01-29 | 2006-03-08 | 皇家飞利浦电子股份有限公司 | Data communication using constant total current |
| CN1922839A (en) * | 2003-11-24 | 2007-02-28 | 快捷半导体有限公司 | Current transfer logic |
| CN1707969A (en) * | 2004-06-11 | 2005-12-14 | 瑞昱半导体股份有限公司 | Transmission line driver |
| US20120256661A1 (en) * | 2011-04-07 | 2012-10-11 | Hsin-Hsien Li | Current Mode Line Driver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104104626B (en) | 2017-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200356516A1 (en) | Reconfigurable transmitter | |
| CN101965718B (en) | De-emphasis circuit for a voltage mode driver used to communicate via a differential communication link | |
| CN102324922B (en) | Low voltage difference signal drive circuit and digital signal conveyer | |
| CN109783420B (en) | High-speed serial transmitter based on FDSOI technology and adopting phase pre-emphasis | |
| EP1997288A1 (en) | Method and system for adjusting interconnect voltage levels in low power high-speed differential interfaces | |
| CN108696278B (en) | Digital-to-analog converter | |
| CN105515390A (en) | Flyback power converter with programmable output and control circuit and control method thereof | |
| CN104426558A (en) | Radio frequency transmitter and electronic device | |
| US20060188037A1 (en) | Data transmission device | |
| CN105247436B (en) | Voltage regulator with feedforward and feedback control | |
| CN101674073A (en) | Self-adapting amplitude-limiting output intersymbol interference suppression circuit for differential voltage signal with low oscillation amplitude | |
| CN102239637B (en) | System and method for converting between cml signal logic families | |
| CN103944554A (en) | Level switching circuit and digital-to-analog converter | |
| CN106326174B (en) | A kind of two line telecommunication circuits | |
| CN104104626A (en) | Drive unit, related transmission system and current driving method | |
| CN114489226B (en) | Compensation circuit and method for input and output voltage swing linearity | |
| CN105743453A (en) | SD modulation module based polar coordinate transmitter | |
| CN101295978A (en) | Bias compensation and control circuit of current-mode logic driving circuit | |
| WO2019190469A1 (en) | Transmitters and methods for operating the same | |
| CN109874314B (en) | Series power supply circuit, system and method | |
| US8781432B2 (en) | Circuit coupling | |
| CN102215185B (en) | Signal transmitting circuit and signal transmitting method | |
| CN205336235U (en) | Polar coordinates transmitter based on SD modulation module | |
| CN111512265A (en) | Series power supply circuit, system and method | |
| CN218547340U (en) | Communication control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |