CN215417672U

CN215417672U - Active cable for HDMI and DP

Info

Publication number: CN215417672U
Application number: CN202121032049.7U
Authority: CN
Inventors: 葛静; 葛婕; 王祚栋; 毛蔚; 白昀
Original assignee: Fei Ang Innovation Technology Nantong Co ltd
Current assignee: Fei Ang Innovation Technology Nantong Co ltd
Priority date: 2021-02-04
Filing date: 2021-05-14
Publication date: 2022-01-04
Anticipated expiration: 2031-05-14

Abstract

The utility model provides an active cable for HDMI and DP, wherein two parallel first metal wires and second metal wires are arranged in the center of the cable, and the first metal wires are used for connecting a 5V power supply or a DP _ pwr wire; the second metal wire is used for grounding; a plurality of optical fibers are uniformly distributed in the cable on a circumference which takes the midpoint of the distance D between the first metal wire and the second metal wire as the circle center and R as the radius, wherein the radius R is larger than the distance D between the first metal wire and the second metal wire; the cable is internally filled with a protective medium. The utility model has simple structure, the signal transmission is not influenced by the distance, the signal attenuation is effectively avoided, the transmission quality is improved, and the transmission distance is long.

Description

Active cable for HDMI and DP

Technical Field

The utility model relates to the technical field of photoelectricity, in particular to an active cable for HDMI and DP.

Background

With the high-speed development of information technology, high-definition audio and video signals are widely applied to various fields, and people also put higher and higher requirements on multimedia transmission quality and transmission distance.

Ordinary HDMI cable and DP cable use metal wire (like the copper line) as the transmission carrier, because receive the influence of metal material characteristic, there is impedance in the cable itself, along with the increase of length, inevitable signal attenuation can appear, leads to signal quality poor, and transmission distance is short, and this has restricted high definition audio and video signal's use to a certain extent.

In addition, in the prior art, different types of terminal devices need to connect corresponding interfaces through specific cables to realize transmission between the terminal devices and the interfaces, and the cables cannot be compatible with each other and have poor adaptability.

Therefore, in order to solve the above problems in the prior art, there is a need for an active cable that can increase a transmission distance and is compatible with HDMI and DP.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide an active cable for HDMI and DP, which has two parallel first and second metal lines centrally arranged inside the cable,

the first metal wire is used for connecting a 5V power supply or is used for connecting a DP _ pwr wire; the second metal wire is used for grounding;

a plurality of optical fibers are uniformly distributed in the cable on a circumference which takes the midpoint of the distance D between the first metal wire and the second metal wire as the circle center and R as the radius, wherein the radius R is larger than the distance D between the first metal wire and the second metal wire;

the cable is internally filled with a protective medium.

Preferably, the first metal wire is a copper wire, and the second metal wire is a copper wire.

Preferably, a cladding layer is arranged on the outer side of the optical fiber, a cladding layer is arranged on the outer side of the first metal wire, and a cladding layer is arranged on the outer side of the second metal wire.

Preferably, the optical fibers are six.

Preferably, the optical fibers are seven.

According to the utility model, two metal wires are arranged in parallel at the center of the cable, the first metal wire is used for connecting a power supply, and the second metal wire is used for grounding. When signals are transmitted, no current or very small current exists on the first metal wire, the condition that voltage drop is generated by the metal wire to cause signal attenuation in long-distance transmission can be effectively improved, and therefore transmission quality is guaranteed, and long-distance transmission is facilitated.

The utility model has simple structure, the signal transmission is not influenced by the distance, the signal attenuation is effectively avoided, the transmission quality is improved, and the transmission distance is long.

The structure of the utility model has strong compatibility and can transmit various signal types, such as HDMI signals and DP signals.

The metal wire of the utility model can be provided with no coating layer. The optical fiber has no electromagnetic crosstalk, and the two metal wires have no electromagnetic crosstalk, so that a shielding layer is not required to be arranged, the structure is simple, the cost of the cable is saved, and the economic benefit is high.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

Further objects, features and advantages of the present invention will become apparent from the following description of embodiments of the utility model, with reference to the accompanying drawings, in which:

fig. 1 schematically shows a cross-sectional view of an active cable for HDMI and DP with six optical fibers in one embodiment of the utility model.

Fig. 2 shows a schematic cross-sectional view of an active cable with six optical fibers for HDMI and DP in another embodiment of the present invention.

Fig. 3 schematically shows a cross-sectional view of an active cable with seven optical fibers for HDMI and DP in a further embodiment of the utility model.

Fig. 4 schematically shows a cross-sectional view of an active cable with seven optical fibers for HDMI and DP in a further embodiment of the utility model.

Detailed Description

The objects and functions of the present invention and methods for accomplishing the same will be apparent by reference to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in different forms. The nature of the description is merely to assist those skilled in the relevant art in a comprehensive understanding of the specific details of the utility model.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.

In order to solve the problems in the prior art, the utility model provides an active cable for HDMI and DP to improve the quality of long-distance signal transmission and to be compatible with the signal transmission of HDMI and DP.

As shown in fig. 1, which is a schematic cross-sectional view of an active cable for HDMI and DP having six optical fibers according to an embodiment of the present invention, two parallel first metal wires 201 and second metal wires 202 are arranged in the center of the inside of the active cable for HDMI and DP according to an embodiment of the present invention.

The first metal line 201 is used for connecting a 5V power supply or for connecting a DP _ pwr line. The second metal line 202 is used for grounding.

Inside the cable, a plurality of optical fibers 1 are uniformly arranged on a circumference with a radius R as a center of a circle and a midpoint of a distance D between the first metal wire 201 and the second metal wire 202 as a center of the circle, wherein the radius R is larger than the distance D between the first metal wire and the second metal wire. The cable is internally filled with a protective medium 3.

According to an embodiment of the present invention, the first metal line 201 is a copper line, and the second metal line 202 is a copper line.

According to the present invention, the number of the optical fibers in the present embodiment is six, and taking six optical fibers as an example, the optical fibers are used for transmitting signals (including protocol high speed signals and protocol low speed signals), wherein four optical fibers are used for transmitting protocol high speed signals, and the remaining two optical fibers are used for transmitting protocol low speed signals.

In transmitting the HDMI signal, the protocol low speed signal includes SDA, SCL, HPD, CEC, ARC signal.

When transmitting the DP signal, the protocol low-speed signal includes AUX +, AUX-, SDA, SCL, CEC, HPD, CONFIG signal.

According to an embodiment of the present invention, two parallel first metal lines 201 and second metal lines 202 are arranged in the inner core of the active cable.

When the HDMI signal is transmitted, the first metal wire 201 is connected to a 5V power supply, and serves as a 5V power supply line for triggering the HDMI signal receiving terminal port, so that the signal is not transmitted any more, and the second metal wire 202 is grounded and serves as a ground wire. Because the first metal wire 201 has no load and no current is applied to the first metal wire 201, the situation that the voltage drop generated by the metal wire during long-distance transmission causes signal attenuation can be effectively improved, thereby ensuring the transmission quality and being beneficial to long-distance transmission.

When transmitting the DP signal, the first metal line 201 is connected to the DP _ pwr pin as the DP _ pwr line for supplying power, and the second metal line 202 is grounded as the ground. The first metal wire is used as a DP _ pwr wire, the current on the first metal wire is very small, and the condition that the voltage drop generated by the metal wire causes signal attenuation during long-distance transmission can be effectively improved, so that the transmission quality is ensured, and the long-distance transmission is facilitated.

According to the embodiment of the utility model, the cable is internally filled with the protective medium 3, and the protective medium 3 can be a material with good tensile resistance, so that the cable is not easy to break and break, the optical cable and the copper wire are protected from the influence of internal stress or external pressure, and the service life of the cable is prolonged.

As shown in fig. 2, a cross-sectional view of an active cable having six optical fibers for HDMI and DP according to another embodiment of the present invention, the optical fiber 1 is provided with a cladding layer on the outside, the first metal wire 201 is provided with a cladding layer on the outside, and the second metal wire 202 is provided with a cladding layer on the outside.

In some embodiments, the active cable may be provided with a cable sheath for protecting the cable, for waterproofing, moisture proofing, etc., suitable for laying in various applications.

As shown in fig. 3, which is a schematic cross-sectional view of an active cable having seven optical fibers for HDMI and DP according to another embodiment of the present invention, two parallel first metal wires 201 and second metal wires 202 are arranged in the center of the inside of an active cable for HDMI and DP according to an embodiment of the present invention.

According to the present invention, the number of the optical fibers in the embodiment is seven, and seven optical fibers are taken as an example, the optical fibers are used for transmitting signals (including protocol high-speed signals and protocol low-speed signals), wherein four optical fibers are used for transmitting protocol high-speed signals, and the other two optical fibers are used for transmitting protocol low-speed signals.

As shown in fig. 4, a cross-sectional view of an active cable having seven optical fibers for HDMI and DP according to still another embodiment of the present invention, a cladding layer is disposed on the outer side of the optical fiber 1, a cladding layer is disposed on the outer side of the first metal wire 201, and a cladding layer is disposed on the outer side of the second metal wire 202.

According to the utility model, two metal wires are arranged in parallel at the center of the cable, the first metal wire is used for connecting a power supply, and the second metal wire is used for grounding. When signals are transmitted, no current or little current exists on the first metal wire, the condition that the voltage drop generated by the first metal wire during long-distance transmission causes signal attenuation can be effectively improved, and therefore transmission quality is guaranteed, and long-distance transmission is facilitated.

The metal wires of the utility model can be not provided with a coating layer, the optical fiber has no electromagnetic crosstalk, and the two metal wires have no electromagnetic crosstalk, so that a shielding layer is not needed, the structure is simple, the cost of the cable is saved, and the economic benefit is high.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

Claims

1. An active cable for HDMI and DP, characterized in that two parallel first and second metal wires are arranged in the center of the cable,

the cable is internally filled with a protective medium.

2. The active cable of claim 1, wherein the first metal line is a copper line and the second metal line is a copper line.

3. The active cable of claim 1, wherein the optical fiber is coated on the outside, the first wire is coated on the outside, and the second wire is coated on the outside.

4. Active cable according to claim 1 or 3, characterized in that the optical fibers are six.

5. Active cable according to claim 1 or 3, characterized in that the optical fibers are seven.