CN112489410B - Transmitting and receiving device for photoelectric signals and operation method thereof - Google Patents
Transmitting and receiving device for photoelectric signals and operation method thereof Download PDFInfo
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- CN112489410B CN112489410B CN201910856690.3A CN201910856690A CN112489410B CN 112489410 B CN112489410 B CN 112489410B CN 201910856690 A CN201910856690 A CN 201910856690A CN 112489410 B CN112489410 B CN 112489410B
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/36—Electric signal transmission systems using optical means to covert the input signal
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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Abstract
The invention relates to a transceiver for photoelectric signals, comprising: an output driver having an input connected to the signal input (a) and to an input of the delay unit and an output connected to the input output (AUX) and to a first comparison input of the comparator, wherein the input driver has a first delay and a first gain; a delay unit, an output terminal of which is connected to the second comparison input terminal of the comparator, wherein the delay unit has a first delay and a first gain; and a comparator, the output of which is connected to the signal output (B), wherein the comparator is configured to determine a difference between the first comparison input and the second comparison input. The invention also relates to a system and a method. By the invention, the sending and receiving modes can be switched adaptively according to the signal transmission direction without mutual interference or confusion.
Description
Technical Field
The present invention relates generally to the field of optoelectronic integrated circuits, and more particularly, to a transceiver for optoelectronic signals. The invention also relates to a bidirectional optical signal transmission system and to a method for operating the transceiver device.
Background
As the data processing capacity of computers increases, higher and higher data transmission rates are required to eliminate bottlenecks. Loss is a significant disadvantage when large amounts of data, such as video, are transmitted over long distances. Conventional cable connection schemes cannot transmit over long distances due to large copper wire losses. The laser has small transmission loss in the optical fiber and is very suitable for long-distance signal transmission.
However, since the optoelectronic devices are all unidirectional, and some data interfaces, such as AUX channel signals of DP port (DisplayPort), are half-duplex, this means that the optoelectronic driving chip is required to be able to automatically identify the transmission direction of the signals.
For this reason, a method capable of automatically recognizing the signal direction of the interface and accurately transmitting the signal is required.
Disclosure of Invention
The object of the invention is to provide a transceiver device for optoelectronic signals, a bidirectional transmission system for optoelectronic signals and a method for operating the transceiver device, by means of which device, system and/or method, switching between transmission and reception modes can be carried out adaptively, depending on the signal transmission direction, without mutual interference or confusion.
In a first aspect of the invention, this task is solved by a transceiving apparatus for an optoelectronic signal, comprising:
an output driver having an input connected to the signal input (a) and to the input of the delay unit and an output connected to the input output (Aux) and to a first comparison input of the comparator, wherein the input driver has a first delay and a first gain;
a delay unit having an output connected to the second comparison input of the comparator, wherein the delay unit has a first delay and a first gain; and
a comparator having an output connected to the signal output (B), wherein the comparator is configured to determine a difference between the first comparison input and the second comparison input.
It should be noted here that in the present invention, the terms "output driver", "delay unit", and "comparator" themselves are not intended to limit the structures thereof, but specific structures thereof may be defined by functions thereof. For example, if the output driver has a first delay and a first gain, it may have corresponding delay devices and amplification devices; similarly, the delay unit has a first delay and a first gain, and then it can also have a corresponding delay device and an amplifying device; and the comparator may have a subtractor or an operational amplifier or the like due to its comparison function. That is, the specific implementation of these components may be tailored to specific needs.
In one embodiment of the invention, it is provided that the transceiver device further comprises:
an amplifier having an input connected to the output of the photodetector and an output connected to the signal input (a), wherein the amplifier is configured to amplify an input signal.
With this expansion scheme, the signal received by the photodetector can be front-end amplified, thereby facilitating subsequent processing.
In a further embodiment of the invention, it is provided that the transceiver device further comprises:
a laser driver having an input connected to the signal output (B) and an output connected to the laser, wherein the laser is configured to convert an input signal into an output signal suitable for output to the laser.
With this embodiment, the signal can be converted into a signal suitable for emission by a laser or for transmission in an optical fiber.
In a further embodiment of the invention, it is provided that the transceiver device further comprises:
a laser, the input end of which is connected to the laser driver; and
and a photodetector having an output connected to the input of the amplifier.
In a further embodiment of the invention, it is provided that the input/output (AUX) is configured to receive a half-duplex signal. Here, "half-duplex" means that there is only communication in a single direction at the same time, that is, when a first transceiving terminal transmits a signal to a second transceiving terminal, it cannot simultaneously receive a signal from the second transceiving terminal, and vice versa.
In a second aspect of the invention, this task is solved by a bidirectional transmission system of optical and electrical signals, comprising:
a first transceiving end and a second transceiving end, wherein the first transceiving end and the second transceiving end are configured to communicate with each other through an optical fiber, wherein the first transceiving end and the second transceiving end have a transceiving device according to the present invention; and
and an optical fiber coupled to the first transceiving end and the second transceiving end for transmitting the optical-electrical signal therebetween.
In one embodiment of the invention, it is provided that the system further comprises one or more optoelectronic repeaters, which are configured to repeat the optical signals in the optical fibers. The optical-electrical-optical repeater includes, for example, an optical-electrical-optical converter, and is configured to convert signals in each optical fiber into electrical signals, amplify the electrical signals, and convert the electrical signals into optical signals for transmission. Other forms of opto-electronic repeaters are also contemplated, depending on the requirements of a particular application.
In a third aspect of the invention, the aforementioned object is achieved by a method for operating a transceiver device according to the invention, comprising the following steps:
receiving a first electrical signal from an input/output terminal (AUX), wherein the signal at the signal input terminal (a) is zero, such that the output signal of the delay and the output signal of the output driver are both zero; and comparing the input electrical signal with the output signal of the delay unit by the comparator and outputting the comparison result to the signal output terminal (B).
In one embodiment of the invention, it is provided that the method further comprises the following steps:
receiving a second electrical signal from a signal input (a);
inputting the second electrical signal to the delay unit and the output driver;
outputting the same signal by the output signal of the delayer and the output driver, so that the output signal of the comparator is zero and the signal of the signal output end is zero; and
the signal is output by an output driver to an input/output terminal (AUX).
In a further embodiment of the invention, it is provided that the method further comprises the following steps:
processing the signal at the signal output end (B) by a laser driver and outputting the signal to a laser; and
the output signal of the photodetector is amplified by the amplifier and output to the signal input terminal (A).
With this development, the signal received by the photodetector can be front-end amplified, thereby facilitating subsequent processing, while the signal can be converted into a signal suitable for emission by a laser or for transmission in an optical fiber.
The invention has at least the following beneficial effects: (1) the invention realizes the self-adaptive switching of the input mode and the output mode by arranging the output driver, the delay unit and the subtracter, so that the corresponding operation in the corresponding mode can be accurately executed, and the error operation in the opposite mode can not be triggered; (2) the hardware structure and logic of the invention are simple, and no complex judgment logic is needed to be introduced, so the invention can be realized with low cost, and the input and output precision is higher.
Drawings
The invention is further elucidated with reference to the drawings in conjunction with the detailed description.
Fig. 1 shows a schematic diagram of a transceiving apparatus for an optoelectronic signal; and
fig. 2 shows a schematic diagram of an optoelectronic signal bidirectional transmission system according to the present invention.
Detailed Description
It should be noted that the components in the figures may be exaggerated and not necessarily to scale for illustrative purposes. In the figures, identical or functionally identical components are provided with the same reference symbols.
In the present invention, "disposed on …", "disposed over …" and "disposed over …" do not exclude the presence of an intermediate therebetween, unless otherwise specified. Further, "disposed on or above …" merely indicates the relative positional relationship between two components, and may also be converted to "disposed below or below …" and vice versa in certain cases, such as after reversing the product direction.
In the present invention, the embodiments are only intended to illustrate the aspects of the present invention, and should not be construed as limiting.
In the present invention, the terms "a" and "an" do not exclude the presence of a plurality of elements, unless otherwise specified.
It is further noted herein that in embodiments of the present invention, only a portion of the components or assemblies may be shown for clarity and simplicity, but those of ordinary skill in the art will appreciate that, given the teachings of the present invention, required components or assemblies may be added as needed in a particular scenario.
It is also noted herein that, within the scope of the present invention, the terms "same", "equal", and the like do not mean that the two values are absolutely equal, but allow some reasonable error, that is, the terms also encompass "substantially the same", "substantially equal". By analogy, in the present invention, the terms "perpendicular", "parallel" and the like in the directions of the tables also cover the meanings of "substantially perpendicular", "substantially parallel".
The numbering of the steps of the methods of the present invention does not limit the order of execution of the steps of the methods. Unless specifically stated, the method steps may be performed in a different order.
Finally, it should be noted that although the present invention is described with reference to a differential AUX channel of a dp (displayport) video interface, it should be understood that the present invention is equally applicable to other half-duplex transmission ports.
The invention is further elucidated with reference to the drawings in conjunction with the detailed description.
Fig. 1 shows a schematic diagram of a transceiver 100 for optical-electrical signals, which takes a differential AUX channel of a dp (display port) video interface as an example, where input and output signals are both in differential signal form. But is not limited thereto and may be applied to other scenarios as needed.
As shown in fig. 1, the transceiver apparatus 100 includes the following components:
the differential inputs vi +, vi-of the output driver 101 are connected to the signal inputs a +, a-and to the differential inputs vi +, vi-of the delay unit 102, and the differential outputs vo +, vo-of the output driver 101 are connected to the input outputs AUX +, AUX-and to the first comparison inputs v1+, v 1-of the comparator 103, wherein the input driver 101 has a first delay and a first gain.
A delay unit 102, the differential output vo +, vo-of which is connected to the second comparison input v2+, v 2-of the comparator 103, wherein the delay unit 102 has a first delay and a first gain. That is, the delay unit 102 has the same delay and gain as the output driver 101. Here, the delay and gain of a device refer to the delay and gain, respectively, of the output signal of the device relative to the input signal.
The comparator 103, in this case a subtractor, has its differential output vo +, vo-connected to the signal output B +, B-, wherein the comparator 103 is configured to determine the difference between the first comparison input v1+, v 1-and the second comparison input v2+, v 2-.
The operation of the transceiver 100 is briefly described below.
(1) The differential signal voltages of the signal input and output ends AUX + and AUX-are Vaux + and Vaux-respectively, so that the differential swing (or referred to as amplitude difference) of the differential signal is equal to Vaux + -Vaux-; the differential signal voltage of the signal input ends A & lt + & gt and A & lt- & gt is Va & lt + & gt and Va & lt- & gt respectively, and then the differential swing amplitude is equal to Va & lt + & gt-Va & gt; the differential signal voltages at the differential output terminals vo + and vo-of the delay unit 102 are Va1+ and Va1-, respectively, and then the differential swing is equal to Va1+ -Va 1-; the differential signal voltages of the signal output ends B & lt + & gt and B & lt- & gt are Vb & lt- & gt and Vb & lt- & gt respectively, so that the differential swing amplitude is equal to Vb & lt + & gt-Vb & lt- & gt;
(2) from the output of the comparator 102, Vb + -Vb- ═ (Vaux + -Vaux-) - (Va1+ -Va 1-);
(3) when the differential signal of the signal input and output ends AUX + and AUX-is transmitted from right to left, namely the differential signal is transmitted from the input and output ends AUX +, AUX-to the signal output ends B + and B-, the swing of the differential signal of the signal input ends A + and A-is equal to 0, and then Vb + -Vb- ═ Vaux + -Vaux-; therefore, interference-free transmission of differential signals from AUX to B is realized;
(4) when the differential signal of the signal input/output terminal AUX +, AUX-is transmitted from left to right, i.e. from the signal input terminal a +, a-to the signal input/output terminal AUX +, AUX-, Vaux-is proportional to Va + -Va- (e.g. because the signal Va + -Va-is amplified by the output driver 101), and Vb + -Vb ═ 0; therefore, the non-interference transmission of signals from the signal input end A +, A-to the signal input and output end AUX +, AUX-is realized.
Fig. 2 shows a schematic diagram of an optoelectronic signal bidirectional transmission system 200 according to the present invention.
As shown in fig. 2, the system 200 includes a first transceiving end 201 and a second transceiving end 202 and an optical fiber 203. The first transceiving terminal 201 includes an output driver 201a, a delay unit 201b, a comparator 201c, a laser driver 201d, an amplifier 201e, a laser 201f, and a photodetector 201g, and the second transceiving terminal 202 includes an output driver 202a, a delay unit 202b, a comparator 202c, a laser driver 202d, an amplifier 202e, a laser 202f, and a photodetector 202 g.
The operation of the bidirectional optical signal transmission system 200 is described below.
The signal of the signal input/output terminal AUX is a half-duplex signal, so that there is only one direction of signal transmission in the same time period. In fig. 2, when the signal of AUX is transmitted from the Source (Source), i.e. the first transceiver end 201, to the Sink (Sink), i.e. the second transceiver end 202, the photodetector 201g on the Source side does not receive the optical signal on the Sink side, so the differential swing of the differential signal at the output end of the Source-side amplifier 201e, i.e. the signal input end a +, a —, is 0; the output optical power swing of laser 201f is therefore proportional to (and may also be equal to) the swing of the AUX differential signal; meanwhile, the photodetector 202g on the signal sink side converts the optical signal transmitted from the laser 201f on the signal source side through the optical fiber 203 into a current signal and amplifies the current signal into a differential signal of the signal input end A +, A-through the amplifier 202 e; since the gain and the delay of the sink-side output driver 202a and the delay unit 202B are the same, the differential swing of the two differential input signals of the sink-side comparator 202c is the same, so that the differential swing of the differential signals at the output terminals of the comparator 202c, i.e. the signal output terminals B +, B-is equal to 0, and thus the sink-side laser 202f does not transmit an optical signal to the source side at this time.
Similarly, when the signal of AUX is transmitted from the sink, i.e. the second transceiver end 202, to the source, i.e. the first transceiver end 201, the sink-side photodetector 202g does not receive the optical signal on the source side, so the differential signal differential swing of the sink-side signal input ends a +, a "is 0; the output optical power swing of laser 202f is proportional to the swing of the AUX differential signal; meanwhile, the optical signal transmitted by the optical fiber from the laser 202f at the source side is converted into a current signal by the optical detector 201g at the source side and amplified into a differential signal of signal input ends A + and A-by the amplifier 201 e; since the gain and delay of the source-side output driver 201a and the delay unit 201B are the same, the differential swing of the two differential input signals of the source-side comparator 201c is the same, so that the differential swing of the differential signals at the output terminals of the comparator 201c, i.e., the signal output terminals B +, B-is equal to 0, and thus the source-side laser 201f does not transmit an optical signal to the sink side at this time.
It can be known from this embodiment that the bidirectional optical electrical signal transmission system 200 of the present invention realizes the automatic identification function of the AUX half-duplex signal direction.
The invention has at least the following beneficial effects: (1) the invention realizes the self-adaptive switching of the input mode and the output mode by arranging the output driver, the delay unit and the subtracter, so that the corresponding operation in the corresponding mode can be accurately executed, and the error operation in the opposite mode can not be triggered; (2) the hardware structure and logic of the invention are simple, and no complex judgment logic is needed to be introduced, so the invention can be realized with low cost, and the input and output precision is higher.
Although some embodiments of the present invention have been described herein, it will be understood by those skilled in the art that these embodiments are shown by way of example only. Numerous variations, substitutions and modifications will occur to those skilled in the art in light of the teachings of the present invention without departing from the scope thereof. It is intended that the following claims define the scope of the invention and that methods and structures within the scope of these claims and their equivalents be covered thereby.
Claims (8)
1. A transceiver apparatus for optical-electrical signals, comprising:
a laser driver having an input connected to the signal output B and an output connected to a laser, wherein the laser is configured to convert an input signal into an output signal suitable for output to the laser;
a laser, the input end of which is connected to the laser driver;
an output driver having an input connected to the signal input a and to an input of the delay unit and an output connected to the input output AUX and to a first comparison input of the comparator, wherein the output driver has a first delay and a first gain;
a delay unit having an output connected to the second comparison input of the comparator, wherein the delay unit has a first delay and a first gain; and
a comparator having an output connected to the signal output B, wherein the comparator is configured to determine a difference between the first comparison input and the second comparison input, wherein the transceiving means is configured such that there will only be signal transmission in one direction during the same time period:
the photoelectric signal is transmitted from an input end AUX to a signal output end B, a first electric signal is received from the input end AUX, wherein the signal of the signal input end A is zero, so that the output signal of the time delay unit and the output signal of the output driver are both zero, the differential swing of the differential signal of the signal input end A is 0, and the first electric signal is compared with the output signal of the time delay unit by the comparator and the comparison result is output to the signal output end B; and
signal transmission of an opto-electrical signal from a signal input a to an input output AUX, receiving a second electrical signal from the signal input a, wherein the second electrical signal is input to a delay unit and an output driver, the same signal is output by the output signal of the delay and the output driver, the output signal of the output driver input by the first comparison input is compared by a comparator with the output signal of the delay unit input by the second comparison input such that the output signal of the comparator is zero and the signal of the signal output B is zero, wherein the differential swing of the differential signal of the signal output B is 0, and the signal is output by the output driver to the input output AUX, wherein no optical signal is sent by the laser.
2. The transceiver device of claim 1, further comprising:
an amplifier having an input connected to the output of the photodetector and an output connected to the signal input a, wherein the amplifier is configured to amplify an input signal.
3. The transceiver apparatus of claim 1, further comprising:
and the output end of the photoelectric detector is connected to the input end of the amplifier.
4. The transceiver apparatus of claim 1, wherein the input/output terminal AUX is configured to receive a half-duplex signal.
5. An optical-electrical signal bidirectional transmission system, comprising:
a first transceiving end and a second transceiving end, wherein the first transceiving end and the second transceiving end are configured to communicate with each other through an optical fiber, wherein the first transceiving end and the second transceiving end have the transceiving device according to one of claims 1 to 4; and
and an optical fiber coupled to the first transceiving end and the second transceiving end for transmitting the optical-electrical signal therebetween.
6. The system of claim 5, further comprising one or more opto-electronic repeaters configured to repeat optical signals in the optical fiber.
7. Method for operating a transceiver device according to one of claims 1 to 4, comprising the following steps:
receiving a first electric signal from an input/output end AUX, wherein a signal of a signal input end a is zero, so that an output signal of the time delay and an output signal of the output driver are both zero, and a differential swing of a differential signal of the signal input end a is 0;
comparing the input electric signal with the output signal of the delay unit by the comparator and outputting the comparison result to a signal output end B;
receiving a second electrical signal from signal input a;
inputting the second electrical signal to the delay unit and the output driver;
outputting the same signal by the output signal of the delay and the output driver, so that the output signal of the comparator is zero and the signal of the signal output end B is zero, wherein the differential swing of the differential signal of the signal output end B is 0, and the laser does not send an optical signal; and
the output driver outputs a signal to the input/output terminal AUX.
8. The method of claim 7, further comprising the steps of:
processing the signal at the signal output end B by the laser driver and outputting the signal to the laser; and
the output signal of the photodetector is amplified by the amplifier and output to the signal input terminal a.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387466A (en) * | 1980-03-28 | 1983-06-07 | Societe Anonyme De Telecommunications | Half-duplex digital transmission system |
| US4622551A (en) * | 1983-10-27 | 1986-11-11 | Otis Elevator Company | Half-duplex industrial communications system |
| CN2836343Y (en) * | 2005-11-11 | 2006-11-08 | 黄兰 | Single-fiber bidirectional asymmetric optical module |
| CN201315587Y (en) * | 2008-11-03 | 2009-09-23 | 青岛海信宽带多媒体技术股份有限公司 | Single-fiber three-dimensional module |
| CN207409132U (en) * | 2017-09-22 | 2018-05-25 | 光一科技股份有限公司 | Four tables of multiplexing M-Bus passages unify interface convertor and copy and accept system based on it |
| WO2018218697A1 (en) * | 2017-05-31 | 2018-12-06 | 中国科学技术大学 | Visible light communication transceiver and visible light communication system |
| CN110178163A (en) * | 2016-08-23 | 2019-08-27 | 康福斯能源公司 | Optic communication battery management system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2540711Y (en) * | 2002-05-13 | 2003-03-19 | 飞博创（成都）科技有限公司 | Single-fiber bidirectional optical transmit-receive module |
| US8180225B2 (en) * | 2006-12-20 | 2012-05-15 | Jan-Gustav Werthen | Optical data link |
| CN201011717Y (en) * | 2007-01-15 | 2008-01-23 | 青岛海信光电科技股份有限公司 | Optical receiving-transmitting module |
| US7786428B2 (en) * | 2007-08-31 | 2010-08-31 | George Dinca | Remote optical control of electrical circuits having a control module with a mechanical switch and a light magnifying lens |
| US8842993B2 (en) * | 2011-03-29 | 2014-09-23 | Source Photonics, Inc. | Operational status flag generation in an optical transceiver |
| CN102752045B (en) * | 2012-07-20 | 2016-04-06 | 青岛海信宽带多媒体技术有限公司 | Optical module for optical network unit |
| CN103759747B (en) * | 2013-12-27 | 2016-06-15 | 中国科学院沈阳自动化研究所 | Motor absolute position detection device and method based on uni-core bidirectional technology |
| US9240878B2 (en) * | 2014-01-27 | 2016-01-19 | Lattice Semiconductor Corporation | Apparatus, method and system for asymmetric, full-duplex communication |
| KR101774466B1 (en) * | 2016-02-24 | 2017-09-05 | 옵티시스 주식회사 | Display-Port optical connector |
-
2019
- 2019-09-11 CN CN201910856690.3A patent/CN112489410B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387466A (en) * | 1980-03-28 | 1983-06-07 | Societe Anonyme De Telecommunications | Half-duplex digital transmission system |
| US4622551A (en) * | 1983-10-27 | 1986-11-11 | Otis Elevator Company | Half-duplex industrial communications system |
| CN2836343Y (en) * | 2005-11-11 | 2006-11-08 | 黄兰 | Single-fiber bidirectional asymmetric optical module |
| CN201315587Y (en) * | 2008-11-03 | 2009-09-23 | 青岛海信宽带多媒体技术股份有限公司 | Single-fiber three-dimensional module |
| CN110178163A (en) * | 2016-08-23 | 2019-08-27 | 康福斯能源公司 | Optic communication battery management system |
| WO2018218697A1 (en) * | 2017-05-31 | 2018-12-06 | 中国科学技术大学 | Visible light communication transceiver and visible light communication system |
| CN207409132U (en) * | 2017-09-22 | 2018-05-25 | 光一科技股份有限公司 | Four tables of multiplexing M-Bus passages unify interface convertor and copy and accept system based on it |
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|---|---|
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Effective date of registration: 20230818 Address after: Room 906, building A3, innovation industrial park, No. 800, Wangjiang West Road, high tech Zone, Hefei, Anhui 230088 Patentee after: Hefei Hanxin Technology Co.,Ltd. Address before: 200437 2nd floor, building 2, 135 Yixian Road, Yangpu District, Shanghai Patentee before: Li Bing |