CN209071015U - A kind of composite optical/electrical cable - Google Patents

Abstract

The application provides a kind of composite optical/electrical cable, including one for the positive optical fiber and three copper wire for transmitting high low speed mixed signal；Wherein first copper wire in three copper wire is used for reverse transfer low speed signal as ground wire, third root copper wire as power supply line, second copper wire.The decaying that the application has using optical fiber is small, signal is lost without compression, no signal and the characteristics of not by external electromagnetic interference, high low speed mixed signal is transmitted using optical fiber forward direction, it can keep the transmission signal of long range high-fidelity, and composite optical/electrical cable provided by the present application is only made of an optical fiber and three copper wire, cost is significantly lower than the cost of existing connection line of optic fibre.

Description

Photoelectric composite cable

Technical Field

The application relates to the technical field of signal transmission, in particular to a photoelectric composite cable.

Background

With the increasing requirements of people on audio and video transmission quality, the demand for ultra-high-speed and ultra-long-distance audio and video transmission systems is more urgent. At present, an HDMI (High Definition Multimedia Interface) signal transmission line on the market is composed of 19 copper wires, and due to the influence of characteristics of a metal material, the maximum transmission distance of the HDMI signal transmission line is only 5 meters, the transmission distance is short, and meanwhile, the HDMI signal transmission line cannot be wired with a strong wire at the same time, and the anti-interference capability is poor.

In view of this, the prior art proposes an optical fiber connection line, which is composed of 4 optical fibers (numbered 8, 9, 10, 11, respectively) and 7 copper wires (numbered 1, 2, 3, 4, 5, 6, 7, respectively), as shown in fig. 1. The 4 optical fibers are used for transmitting high-speed signals, the pair of differential signals is transmitted through 1 optical fiber, the 7 copper wires are used for transmitting low-speed signals and power signals, and one signal is transmitted through 1 copper wire.

Although the optical fiber connecting line has a long transmission distance by means of the optical fiber, and the problem of short transmission distance of the HDMI signal transmission line is solved, the cost of the optical fiber connecting line is directly increased due to the high cost of the optical fiber, and the cost of 4 optical fibers is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a photoelectric composite cable, which is used to solve the problems in the prior art that an HDMI signal transmission line has a short transmission distance and an optical fiber connection line has a high cost. The technical scheme is as follows:

based on an aspect of the present application, the present application provides an optical-electrical composite cable, including:

an optical fiber for forward transmission of high and low speed mixed signals;

three copper wires; the first copper wire of the three copper wires is used as a power supply wire, the second copper wire is used as a ground wire, and the third copper wire is used for reversely transmitting low-speed signals.

Optionally, the system further comprises a sending end and a receiving end; wherein,

the transmitting end comprises: the first bidirectional processing unit is used for processing the bidirectional transmission signal; the first serializer is used for receiving high-speed signals, low-speed signals and processing signals processed by the first bidirectional processing unit, generating a path of serial signals from all received signals and sending the serial signals to the first electro-optical conversion unit; the first electro-optical conversion unit is used for converting the received serial signals into optical signals and sending the optical signals to the receiving end; the first deserializer is used for receiving one path of serial signals returned by the receiving end and deserializing the serial signals to obtain signals which are respectively output;

the receiving end includes: the first photoelectric conversion unit is used for receiving the optical signal sent by the sending end, converting the optical signal into a path of serial signal and sending the serial signal to the second deserializer; the second deserializer is used for receiving the serial signals sent by the first photoelectric conversion unit and deserializing the serial signals to obtain signals of each path and outputting the signals respectively; the second bidirectional processing unit is used for processing the bidirectional transmission signal and respectively sending the processed signal to the second serializer and the corresponding interface; the second serializer is used for receiving the processed processing signals sent by the second bidirectional processing unit, generating a path of serial signals from all the received processing signals and sending the path of serial signals to the sending end;

the first electro-optical conversion unit sends the optical signal to the receiving end through the optical fiber;

and the second serializer sends the generated one path of serial signals to the sending end through the third copper wire.

Optionally, at the sending end: a bidirectional transmission signal corresponds to a first bidirectional processing unit;

at the receiving end: one bi-directional transmission signal corresponds to one second bi-directional processing unit.

Based on another aspect of the present application, the present application provides an optical-electrical composite cable, including:

a first optical fiber for forward transmission of high and low speed mixed signals;

a second optical fiber for transmitting high-speed signals in reverse direction;

two copper wires; and the first copper wire of the two copper wires is used as a power wire, and the second copper wire is used as a ground wire.

Optionally, the system further comprises a sending end and a receiving end; wherein,

the transmitting end comprises: a third bidirectional processing unit for processing the bidirectional transmission signal; the third serializer is used for receiving high-speed signals, low-speed signals and processing signals processed by the third bidirectional processing unit, generating a path of serial signals from all received signals and sending the serial signals to the second electro-optical conversion unit; the second electro-optical conversion unit is used for converting the received serial signals into optical signals and sending the optical signals to the receiving end; the second photoelectric conversion unit is used for receiving the optical signal returned by the receiving end, converting the optical signal into a path of serial signal and further sending the serial signal to a third deserializer; a third deserializer for deserializing the serial signal to obtain each path of signal and outputting the signal respectively;

the receiving end includes: the third photoelectric conversion unit is used for receiving the optical signal sent by the sending end, converting the optical signal into a path of serial signal and sending the serial signal to the fourth deserializer; a fourth deserializer for receiving the serial signal sent by the third photoelectric conversion unit and deserializing the serial signal to obtain signals of each path and outputting the signals respectively; the fourth bidirectional processing unit is used for processing the bidirectional transmission signal and respectively sending the processed signal to the fourth serializer and the corresponding interface; the fourth serializer is used for receiving the processed processing signals sent by the fourth bidirectional processing unit, generating a path of serial signals from all the received processing signals and sending the path of serial signals to the third electro-optical converter; a third electro-optical conversion unit for converting the serial signal generated by the fourth serializer into an optical signal and sending the optical signal to the sending end;

the second electro-optical conversion unit sends the optical signal obtained by conversion of the second electro-optical conversion unit to the receiving end through the first optical fiber;

and the third electro-optical conversion unit sends the optical signal obtained by conversion by the third electro-optical conversion unit to the sending end through the second optical fiber.

Optionally, at the sending end: one bidirectional transmission signal corresponds to one third bidirectional processing unit;

at the receiving end: one bidirectional transmission signal corresponds to one fourth bidirectional processing unit.

Based on a further aspect of the present application, the present application provides an optical-electrical composite cable, including:

an optical fiber for forward transmission of high and low speed mixed signals;

a pair of twisted pair lines for transmitting the low speed signal in reverse direction;

two copper wires; and the first copper wire of the two copper wires is used as a power wire, and the second copper wire is used as a ground wire.

The photoelectric composite cable provided by the application is composed of an optical fiber and three copper wires, or composed of two optical fibers and two copper wires, or composed of an optical fiber, a pair of twisted pairs and two copper wires. In each photoelectric composite cable provided by the application, one optical fiber is used for forward transmission of high-speed and low-speed mixed signals, one copper wire is used as a power line, and the other copper wire is used as a ground line, wherein in reverse transmission, the transmission lines are different according to different signal rates, and specifically, when low-speed signals are transmitted in a reverse direction, one copper wire is used for transmission; when high-speed signals are transmitted reversely, one optical fiber is used for transmission; when transmitting low speed signals in reverse, a pair of twisted pair wires is used for transmission. This application utilizes the decay that optic fibre has to reduce, the signal does not have the compression, no signal loss and do not receive outside electromagnetic interference's characteristics, use optic fibre forward transmission high low-speed mixed signal, can keep the transmission signal of long distance high fidelity, and the photoelectric composite cable that this application provided only comprises an optic fibre and three copper lines, perhaps comprises two optic fibres and two copper lines, perhaps comprises an optic fibre, a pair of twisted-pair line and two copper lines, the cost obviously is less than current optical fiber connection line's cost.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a prior art optical fiber connection cable;

fig. 2 is a schematic cross-sectional view of an optical-electrical composite cable according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram illustrating an internal logic principle of an optical-electrical composite cable according to an embodiment of the present application;

fig. 4 is a schematic cross-sectional view of an optical-electrical composite cable according to a second embodiment of the present application;

fig. 5 is a schematic diagram illustrating an internal logic principle of an optical-electrical composite cable according to a second embodiment of the present application;

fig. 6 is a schematic cross-sectional view of an optical-electrical composite cable according to a third embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example one

The optical fiber has the characteristics of small attenuation, no signal compression, no signal loss and no external electromagnetic interference, and can maintain long-distance high-fidelity transmission signals. The application innovatively provides a photoelectric composite cable which can be applied to cables such as HDMI.

Specifically, the photoelectric composite cable provided by the present application, as shown in fig. 2, includes: one optical fiber and three copper wires. The optical fiber is used for forward transmission of high-speed and low-speed mixed signals, a first copper wire in the three copper wires is used as a power line, a second copper wire is used as a ground wire, and a third copper wire is used for backward transmission of low-speed signals.

The high-speed and low-speed mixed signals are transmitted by using one optical fiber in the forward direction, so that the cost can be reduced on the premise of ensuring the long-distance high-fidelity transmission of the signals; the reverse low-speed signal transmission is carried out by utilizing one copper wire, so that the reduction of the number of the copper wires is beneficial to the reasonable use of resources while the long-distance transmission can be realized. In addition, the total number of optic fibre and copper line among the photoelectric composite cable that this application provided compares in prior art's HDMI signal transmission line, the total number of optic fibre connecting wire central line significantly reduces for space occupancy reduces, thereby is favorable to the rational use of resource.

Specifically, as shown in fig. 3, the optical electrical composite cable provided by the present application includes a transmitting end 10, an optical fiber, a copper wire, a power line, a ground line, and a receiving end 20.

The transmitting end 10 includes a first bidirectional processing unit 11, a first serializer 12, a first electrical-to-optical conversion unit 13, and a first deserializer 14, and the receiving end 20 includes a first optical-to-electrical conversion unit 21, a second deserializer 22, a second bidirectional processing unit 23, and a second serializer 24.

The first bidirectional processing unit 11 is configured to process a bidirectional transmission signal; the first serializer 12 is configured to receive a high-speed signal, a low-speed signal, and a processing signal processed by the first bidirectional processing unit 11, and generate a path of serial signals from all the received signals to send to the first electro-optical conversion unit 13; the first electro-optical conversion unit 13 is configured to convert the received serial signal into an optical signal, and send the optical signal to the receiving end 20 (the first electro-optical conversion unit 21 in the receiving end 20).

The first photoelectric conversion unit 21 in the receiving end 20 is configured to receive an optical signal sent by the sending end 10 (the first electro-optical conversion unit 13 in the sending end 10), convert the optical signal into a path of serial signal, and send the path of serial signal to the second deserializer 22; the second deserializer 22 receives the serial signal sent by the first photoelectric conversion unit 21, deserializes the serial signal, and outputs the signals. Wherein, the deserialized bidirectional transmission signal is sent to the second bidirectional processing unit 23, the second bidirectional processing unit 23 processes the bidirectional transmission signal, and sends the processed signal to the second serializer 24 and the corresponding interface in the receiving end 20 respectively (it should be noted that the corresponding interface in the receiving end 20 is an interface for outputting a signal, which is set in the receiving end 20, and each interface is used for outputting a signal); further, the corresponding interface in the receiving end 20 receives the processed signal and then directly outputs the processed signal, and after receiving the processed signal sent by the second bidirectional processing unit 23, the second serializer 24 generates a path of serial signal from all the received processed signals and sends the path of serial signal to the first deserializer 14 of the sending end 10.

The first deserializer 14 of the transmitting end 10 receives the one path of serial signal returned by the receiving end 20, deserializes the one path of serial signal, and outputs the obtained signals respectively.

In the present application, the first electrical-to-optical conversion unit 21 transmits an optical signal to the receiving end 20 through an optical fiber; the second serializer 24 sends the generated one-path serial signal to the sending end 10 through the third copper wire.

Preferably, in the present application, in the transmitting end 10, one bidirectional transmission signal corresponds to one first bidirectional processing unit 11; in the receiving end 20, one bidirectional transmission signal corresponds to one second bidirectional processing unit 23.

In practical applications of the present application, the transmitting end 10 may include a plurality of interfaces, where each interface is used to receive a signal, and the signal received by the transmitting end 10 in the present application may include a high-speed signal and a low-speed signal, where the low-speed signal includes a bidirectional transmission signal.

For convenience of description, as shown in fig. 3, the transmitting end 10 includes eleven interfaces A, B, C, D, E, F, G, H, I, J, K, where the signal received by the interface A, B, C, D, E, F, G is a low-speed signal, and where the signal received by the interface A, B, C is a bidirectional signal, and the signal received by the interface H, I, J, K is a high-speed signal.

In this application, after the sending end 10 receives the signal a, the signal B, the signal C, the signal D, the signal E, the signal F, the signal G, the signal H, the signal I, the signal J, and the signal K through the interface A, B, C, D, E, F, G, H, I, J, K, it detects that the signal a, the signal B, and the signal C are bidirectional transmission signals, and accordingly sends the signals to the corresponding first bidirectional processing units 11 respectively, and sends the signals to the first serializer 12 after being processed by the corresponding first bidirectional processing units 11 respectively, where the signal D, the signal E, the signal F, the signal G, the signal H, the signal I, the signal J, and the signal K are to be directly sent to the first serializer 12.

The first serializer 12 receives the high-speed signals (i.e., the signal H, the signal I, the signal J, and the signal K) transmitted through the interface H, I, J, K, the low-speed signals (i.e., the signal D, the signal E, the signal F, and the signal G) transmitted through the interface D, E, F, G, and the processed signals (i.e., the processed signal a, the processed signal B, and the processed signal C) transmitted from the first bidirectional processing unit 11, generates one serial signal from all the received signals, and transmits the generated serial signal to the first electro-optical conversion unit 13.

The first electrical-to-optical conversion unit 13 receives the serial signal sent by the first serializer 12, converts the serial signal into an optical signal, and sends the optical signal to the first electrical-to-optical conversion unit 21 in the receiving end 20 through an optical fiber.

After receiving the optical signal, the first photoelectric conversion unit 21 in the receiving end 20 converts the optical signal into a path of serial signal and sends the serial signal to the second deserializer 22.

After receiving the serial signal, the second deserializer 22 deserializes the serial signal to obtain signals, which are output respectively, wherein each signal corresponds to an interface output, and sends the deserialized bidirectional transmission signal to the corresponding second bidirectional processing unit 23, processes the bidirectional transmission signal by using the second bidirectional processing unit 23, and sends the processed signals to the second serializer 24 and the corresponding interfaces a ', B ', and C ', respectively.

The second serializer 24 generates a single serial signal from all the received processing signals, and sends the single serial signal to the first deserializer 14 of the sending end 10 through a copper wire.

In this application, the second bidirectional processing unit 23 will output the signal a input through the interface a 'corresponding to the interface a, output the signal B input through the interface B' corresponding to the interface B, output the signal C input through the interface C 'corresponding to the interface C, and the second deserializer 22 will ensure that other signals are output from the output interface corresponding to the input interface, for example, the signal D input through the interface D is output through the interface D' corresponding to the interface D.

In the present application, since the signal a, the signal B, and the signal C are bidirectional transmission signals, the receiving end 20 replies corresponding signals through the interface a ', the interface B ', and the interface C ', after analysis, the second bidirectional processing unit 23 processes the signals and sends corresponding signals, the second serializer 24 receives all the processed signals and generates a serial signal, the signals are transmitted to the transmitting end 10 through a copper wire, the first deserializer 14 in the transmitting end 10 generates different signals through deserialization and outputs the signals to the first bidirectional processing unit 11, after the first bidirectional processing unit 11 receives the different signals generated by the first deserializer 14, the signal replied by the interface a ' at the receiving end 20 is transmitted to the interface a at the transmitting end 10, the signal replied by the interface B ' at the receiving end 20 is transmitted to the interface B at the transmitting end 10, and the signal replied by the interface C ' at the receiving end 20 is transmitted to the interface C at the transmitting end 10.

In the first embodiment of the application, a copper wire is used as a power line, and a copper wire is used as a ground line. The high-speed signals, the low-speed signals, the bidirectional transmission signals and the like contained in the forward transmission are transmitted through one optical fiber, so that the long-distance high-fidelity characteristic of the signals is ensured, the transmission quality is ensured, and the cost is reduced. All be low-speed signals in the reverse transmission, use a copper line to transmit, the use of extravagant optic fibre, the quantity of copper line reduces simultaneously, and the rational utilization resource has also reduced the cost. The bidirectional transmission signal is divided into forward transmission and reverse transmission, and finally is aggregated into bidirectional transmission, and forward and reverse corresponding transmission is ensured.

Example two

As shown in fig. 4, the present application provides an optical-electrical composite cable including: two optical fibers and two copper wires. One of the two optical fibers (for convenience of description, referred to as a first optical fiber in this embodiment) is used for forward transmission of the high-speed and low-speed mixed signals, and the other optical fiber (for convenience of description, referred to as a second optical fiber in this embodiment) is used for backward transmission of the high-speed signals. The first copper wire of the two copper wires is used as a power wire, and the second copper wire is used as a ground wire. The photoelectric composite cable can be applied to cables such as HDMI.

The high-speed and low-speed mixed signals are transmitted by using one optical fiber in the forward direction, so that the cost can be reduced on the premise of ensuring the long-distance high-fidelity transmission of the signals; and the other optical fiber is used for realizing the transmission of long-distance reverse high-speed signals. The photoelectric composite cable that this application embodiment two provided only contains two copper lines and two optic fibre, has compared copper line quantity that has significantly reduced in prior art, and the total number of optic fibre and copper line among the photoelectric composite cable that this application provided compares in prior art's HDMI signal transmission line, the total number of optic fibre connecting wire central line and significantly reduces for space occupation reduces, thereby is favorable to the rational use of resources.

Specifically, as shown in fig. 5, the optical-electrical composite cable provided by the present application includes a transmitting end 100, a first optical fiber, a second optical fiber, a power line, a ground line, and a receiving end 200.

Wherein the transmitting end 100 includes a third bidirectional processing unit 110, a third serializer 120, a second electrical-to-optical conversion unit 130, a second optical-to-electrical conversion unit 140, and a third deserializer 150. The receiving end 200 includes a third photoelectric conversion unit 210, a fourth deserializer 220, a fourth bidirectional processing unit 230, a fourth serializer 240, and a third electrical-to-optical conversion unit 250.

The third bidirectional processing unit 110 is configured to process a bidirectional transmission signal; the third serializer 120 is configured to receive the high-speed signal, the low-speed signal, and the processed signal processed by the third bidirectional processing unit 110, and generate a path of serial signal from all the received signals to send to the second electro-optical conversion unit 130; the second electrical-to-optical conversion unit 130 is configured to convert the received serial signal into an optical signal, and send the optical signal to the receiving end 200 (specifically, the third electrical-to-optical conversion unit 210 in the receiving end 200).

The third photoelectric conversion unit 210 in the receiving end 200 is configured to receive an optical signal sent by the sending end 100 (the second electro-optical conversion unit 130 in the sending end 100), convert the optical signal into a path of serial signal, and send the path of serial signal to the fourth deserializer 220; the fourth deserializer 220 receives the serial signal sent by the third photoelectric conversion unit 210, deserializes the serial signal, and outputs the signals. Wherein, the two-way transmission signal obtained after deserializing is sent to the fourth two-way processing unit 230, the fourth two-way processing unit 230 processes the two-way transmission signal, and sends the processed signal to the fourth serializer 240 and the corresponding interface in the receiving end 200 respectively (it should be noted that the corresponding interface in the receiving end 200 is an interface for outputting a signal, which is set in the receiving end 200, and each interface is used for outputting a signal); further, the corresponding interface in the receiving end 200 directly outputs the processed signal after receiving the processed signal, and the fourth serializer 240 generates a path of serial signal from all the received processed signals and sends the path of serial signal to the third electrical-to-optical converter 250 after receiving the processed signal sent by the fourth bidirectional processing unit 230.

The third electrical-to-optical converter 250 converts the serial signal generated by the fourth serializer 240 into an optical signal to transmit to the second electrical-to-optical converter 140 of the transmitting end 100.

The second optical-to-electrical converter 140 in the transmitting end 100 receives the optical signal sent by the third electrical-to-optical converter 250 in the receiving end 200, converts the optical signal into a path of serial signal, and sends the converted serial signal to the third deserializer 150.

The third deserializer 150 deserializes the serial signal to obtain signals for respective output.

In this application, the second electro-optical conversion unit 130 transmits the optical signal obtained by conversion by the second electro-optical conversion unit 130 to the receiving end 200 through the first optical fiber; the third electrical-to-optical conversion unit 250 transmits the optical signal converted by the third electrical-to-optical conversion unit 250 to the transmitting end 100 through the second optical fiber.

Preferably, in the present application, in the transmitting end 100, one bidirectional transmission signal corresponds to one third bidirectional processing unit 110; in the receiving end 200, one bidirectional transmission signal corresponds to one fourth bidirectional processing unit 230.

In practical applications of the present application, the transmitting end 100 may include a plurality of interfaces, where each interface is used to receive a signal, and the signal received by the transmitting end 100 in the present application may include a high-speed signal and a low-speed signal, where the low-speed signal includes a bidirectional transmission signal.

For convenience of description, as shown in fig. 5, the present application discloses that the sender 100 includes A, B, C, D, E, F, G, H, I, J, K eleven interfaces, where the signal received by the interface A, B, C, D, E, F, G is a low speed signal, and where the signal received by the interface A, B, C is a bidirectional signal; the signals received by the interface H, I, J, K are high-speed signals, and the description is given by taking the example that the interface I is a reverse transmission high-speed signal.

In this application, after the transmitting end 100 receives the signal a, the signal B, the signal C, the signal D, the signal E, the signal F, the signal G, the signal H, the signal I, the signal J, and the signal K through the interface A, B, C, D, E, F, G, H, I, J, K, it detects that the signal a, the signal B, and the signal C are bidirectional transmission signals, and accordingly respectively transmit the signals to the corresponding third bidirectional processing unit 110, and respectively transmit the signals to the third serializer 120 after being processed by the corresponding third bidirectional processing unit 110, where the signal D, the signal E, the signal F, the signal G, the signal H, the signal J, and the signal K are directly transmitted to the third serializer 120.

It should be noted that, since the signal I is a reverse-transmission high-speed signal, the signal I is not included in the signal received by the third serializer 120.

The third serializer 120 generates one path of serial signals from all the received signals (including the signal D, the signal E, the signal F, the signal G, the signal H, the signal J, the signal K, and the signal a, the signal B, and the signal C processed by the third bidirectional processing unit 110), and sends the generated serial signals to the second electro-optical conversion unit 130.

After receiving the serial signal sent by the third serializer 120, the second electro-optical conversion unit 130 converts the serial signal into an optical signal, and sends the optical signal to the third electro-optical conversion unit 210 in the receiving end 200 through the first optical fiber.

After receiving the optical signal, the third photoelectric conversion unit 210 in the receiving end 200 converts the optical signal into a path of serial signal and sends the serial signal to the fourth deserializer 220.

After receiving the serial signal, the fourth deserializer 220 deserializes the serial signal to obtain signals, which are output respectively, wherein each signal corresponds to an interface output, and sends the deserialized bidirectional transmission signal to the corresponding fourth bidirectional processing unit 230, processes the bidirectional transmission signal by using the fourth bidirectional processing unit 230, and sends the processed signal to the corresponding interfaces a ', B ', and C ' in the fourth serializer 240 and the receiving end 200, respectively.

The fourth serializer 240 receives the processed signals sent by the fourth bidirectional processing unit 230, and generates all the received processed signals into one serial signal, and sends the one serial signal to the third electrical-to-optical converter 250.

The third electrical-to-optical converter 250 converts the serial signal generated by the fourth serializer 240 into an optical signal, and transmits the optical signal to the second electrical-to-optical converter 140 of the transmitting end 100 via the second optical fiber.

The second photoelectric conversion unit 140 in the transmitting end 100 converts the received optical signal into one path of serial signal, and further transmits the converted serial signal to the third deserializer 150.

The third deserializer 150 deserializes the serial signal to obtain signals for respective output.

In this application, the fourth bidirectional processing unit 230 outputs the signal a input through the interface a 'corresponding to the interface a, outputs the signal B input through the interface B' corresponding to the interface B, and outputs the signal C input through the interface C 'corresponding to the interface C, and the fourth deserializer 220 ensures that other signals are output from the output interface corresponding to the input interface, for example, the signal D input through the interface D is output through the interface D' corresponding to the interface D.

In this application, because the signal a, the signal B, and the signal C are bidirectional transmission signals, and the signal I is a reverse transmission high-speed signal, the receiving end 200 replies a corresponding signal through the interface a ', the interface B', and the interface C ', sends a corresponding signal after being processed by the fourth bidirectional processing unit 230 after being analyzed, and sends a signal reversely through the interface I'. The optical signal received by the transmitting end 100 generates a serial signal through the second photoelectric conversion unit 140, and the third deserializer 150 deserializes the serial signal to obtain signals for respective output. The signal I 'is transmitted to the interface I, the signal replied by the interface a' at the receiving end 200 is transmitted to the interface a at the transmitting end 100, the signal replied by the interface B 'at the receiving end 200 is transmitted to the interface B at the transmitting end 100, and the signal replied by the interface C' at the receiving end 200 is transmitted to the interface C at the transmitting end 100.

In the second embodiment of the present application, a copper wire is used as a power line, and a copper wire is used as a ground line. The forward transmission comprises high-speed signals, low-speed signals, bidirectional transmission signals and the like which are all transmitted through one optical fiber (the first optical fiber), so that the long-distance high-fidelity characteristic of the signals is guaranteed, the transmission quality is guaranteed, and the cost is reduced. The reverse transmission comprises high-speed signals, and the other optical fiber (the second optical fiber) is used for transmission, so that the long-distance high-fidelity characteristic of the signals is ensured, and the transmission quality is ensured. The bidirectional transmission signal is divided into forward transmission and reverse transmission, and finally is aggregated into bidirectional transmission, and forward and reverse corresponding transmission is ensured.

EXAMPLE III

As shown in fig. 6, the present application provides an optical-electrical composite cable including: one optical fiber, a pair of twisted pairs, and two copper wires. One of the optical fibers is used for forward transmission of high-low speed mixed signals, and the pair of twisted-pair wires is used for reverse transmission of medium-low speed signals. The first copper wire of the two copper wires is used as a power wire, and the second copper wire is used as a ground wire. The photoelectric composite wire can be applied to cables such as HDMI.

As for the schematic diagram of the internal logic principle of the optical-electrical composite cable provided in the third embodiment of the present application, reference is made to fig. 3, which only differs from that in fig. 3 that the copper wire for reversely transmitting the low-speed signal is replaced by a pair of twisted pairs for reversely transmitting the low-speed signal, and therefore, the applicant does not need to describe herein again.

In the above embodiments of the present application, the different signals transmitted in the forward direction include high-speed and low-speed mixed signals, and one optical fiber is used for transmission. In the reverse transmission, the selected transmission lines are different according to different signal rates, wherein when the reverse transmission different signals comprise high-speed signals, the other optical fiber is used for transmission; when the low-speed signals are reversely transmitted among different signals, one copper wire is used for transmission; when the reverse transmission of different signals is medium and low speed signals, a pair of twisted pair wires is used for transmission.

The photoelectric composite cable provided by the application is composed of an optical fiber and three copper wires, or composed of two optical fibers and two copper wires, or composed of an optical fiber, a pair of twisted pairs and two copper wires. In each photoelectric composite cable provided by the application, one optical fiber is used for forward transmission of high-speed and low-speed mixed signals, one copper wire is used as a power line, and the other copper wire is used as a ground line, wherein in reverse transmission, the transmission lines are different according to different signal rates, and specifically, when low-speed signals are transmitted in a reverse direction, one copper wire is used for transmission; when high-speed signals are transmitted reversely, one optical fiber is used for transmission; when transmitting low speed signals in reverse, a pair of twisted pair wires is used for transmission. This application utilizes the decay that optic fibre has to reduce, the signal does not have the compression, no signal loss and do not receive outside electromagnetic interference's characteristics, use optic fibre forward transmission high low-speed mixed signal, can keep the transmission signal of long distance high fidelity, and the photoelectric composite cable that this application provided only comprises an optic fibre and three copper lines, perhaps comprises two optic fibres and two copper lines, perhaps comprises an optic fibre, a pair of twisted-pair line and two copper lines, the cost obviously is less than current optical fiber connection line's cost.

It should be noted that the above-mentioned embodiments provided in this application are only preferred embodiments, and all the combined embodiments including the above-mentioned contents are all the protection scope of this application.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The photoelectric composite cable provided by the present application is described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (7)

1. An opto-electric composite cable, comprising:

an optical fiber for forward transmission of high and low speed mixed signals;

three copper wires; the first copper wire of the three copper wires is used as a power supply wire, the second copper wire is used as a ground wire, and the third copper wire is used for reversely transmitting low-speed signals.

2. The opto-electric composite cable of claim 1, further comprising a transmitting end and a receiving end; wherein,

the transmitting end comprises: the first bidirectional processing unit is used for processing the bidirectional transmission signal; the first serializer is used for receiving high-speed signals, low-speed signals and processing signals processed by the first bidirectional processing unit, generating a path of serial signals from all received signals and sending the serial signals to the first electro-optical conversion unit; the first electro-optical conversion unit is used for converting the received serial signals into optical signals and sending the optical signals to the receiving end; the first deserializer is used for receiving one path of serial signals returned by the receiving end and deserializing the serial signals to obtain signals which are respectively output;

the receiving end includes: the first photoelectric conversion unit is used for receiving the optical signal sent by the sending end, converting the optical signal into a path of serial signal and sending the serial signal to the second deserializer; the second deserializer is used for receiving the serial signals sent by the first photoelectric conversion unit and deserializing the serial signals to obtain signals of each path and outputting the signals respectively; the second bidirectional processing unit is used for processing the bidirectional transmission signal and respectively sending the processed signal to the second serializer and the corresponding interface; the second serializer is used for receiving the processed processing signals sent by the second bidirectional processing unit, generating a path of serial signals from all the received processing signals and sending the path of serial signals to the sending end;

the first electro-optical conversion unit sends the optical signal to the receiving end through the optical fiber;

and the second serializer sends the generated one path of serial signals to the sending end through the third copper wire.

3. The optical-electrical composite cable according to claim 2,

at the sending end: a bidirectional transmission signal corresponds to a first bidirectional processing unit;

at the receiving end: one bi-directional transmission signal corresponds to one second bi-directional processing unit.

4. An opto-electric composite cable, comprising:

a first optical fiber for forward transmission of high and low speed mixed signals;

a second optical fiber for transmitting high-speed signals in reverse direction;

two copper wires; and the first copper wire of the two copper wires is used as a power wire, and the second copper wire is used as a ground wire.

5. The opto-electric composite cable of claim 4, further comprising a transmitting end and a receiving end; wherein,

the transmitting end comprises: a third bidirectional processing unit for processing the bidirectional transmission signal; the third serializer is used for receiving high-speed signals, low-speed signals and processing signals processed by the third bidirectional processing unit, generating a path of serial signals from all received signals and sending the serial signals to the second electro-optical conversion unit; the second electro-optical conversion unit is used for converting the received serial signals into optical signals and sending the optical signals to the receiving end; the second photoelectric conversion unit is used for receiving the optical signal returned by the receiving end, converting the optical signal into a path of serial signal and further sending the serial signal to a third deserializer; a third deserializer for deserializing the serial signal to obtain each path of signal and outputting the signal respectively;

the receiving end includes: the third photoelectric conversion unit is used for receiving the optical signal sent by the sending end, converting the optical signal into a path of serial signal and sending the serial signal to the fourth deserializer; a fourth deserializer for receiving the serial signal sent by the third photoelectric conversion unit and deserializing the serial signal to obtain signals of each path and outputting the signals respectively; the fourth bidirectional processing unit is used for processing the bidirectional transmission signal and respectively sending the processed signal to the fourth serializer and the corresponding interface; the fourth serializer is used for receiving the processed processing signals sent by the fourth bidirectional processing unit, generating a path of serial signals from all the received processing signals and sending the path of serial signals to the third electro-optical converter; a third electro-optical conversion unit for converting the serial signal generated by the fourth serializer into an optical signal and sending the optical signal to the sending end;

the second electro-optical conversion unit sends the optical signal obtained by conversion of the second electro-optical conversion unit to the receiving end through the first optical fiber;

and the third electro-optical conversion unit sends the optical signal obtained by conversion by the third electro-optical conversion unit to the sending end through the second optical fiber.

6. The electro-optical composite cable of claim 5,

at the sending end: one bidirectional transmission signal corresponds to one third bidirectional processing unit;

at the receiving end: one bidirectional transmission signal corresponds to one fourth bidirectional processing unit.

7. An opto-electric composite cable, comprising:

an optical fiber for forward transmission of high and low speed mixed signals;

a pair of twisted pair lines for transmitting the low speed signal in reverse direction;

two copper wires; and the first copper wire of the two copper wires is used as a power wire, and the second copper wire is used as a ground wire.