CN201084854Y

CN201084854Y - A cable structure that can extend HDMI signal transmission distance

Info

Publication number: CN201084854Y
Application number: CNU2007201560947U
Authority: CN
Inventors: 高文贤
Original assignee: DAVID ELECTRIC Co Ltd
Current assignee: DAVID ELECTRIC Co Ltd
Priority date: 2007-08-14
Filing date: 2007-08-14
Publication date: 2008-07-09
Anticipated expiration: 2017-08-14

Abstract

The utility model relates to a cable conductor structure which can prolong HDMI signal transmission distance. The utility model comprises a first plug, cable conductors and a second plug, wherein the first plug is inserted connectively on the connection port of HDMI of display, the first plug is composed of a circuit board, a HDMI connector and a casing. One end of the cable conductor is electrically connected with a first plug, the other end of the cable conductor is electrically connected with the second plug. When the second plug is inserted with playing end and the first plug is inserted with the display, the transferred HDMI signals are amplified by the signal amplifier on the circuit board, and then transferred to the display, thereby prolonging the HDMI signal transmission distance.

Description

Cable structure capable of prolonging HDMI signal transmission distance

Technical Field

The utility model relates to a cable conductor, in particular to signal cable conductor of HDMI (High-definition multimedia Interface, High definition multimedia transmission Interface).

Background

HDMI is a high definition multimedia interface. The HDMI interface can provide a data transmission bandwidth of up to 5Gbps, and can transmit uncompressed audio signals and high-resolution video signals.

The HDMI interface can obtain high-quality video/audio signal transmission without digital/analog or analog/digital conversion before signal transmission. The HDMI interface can transmit video signals at the same time by only one HDMI cable, unlike the traditional transmission system which needs a plurality of cables for connection, thereby greatly simplifying the installation of the home theater system.

The traditional HDMI cable line provides a data transmission rate of 5Gbps, which can transmit 15 meters at most. Referring to fig. 1, if the HDMI signal transmission distance exceeds 15 meters, in order to avoid HDMI signal attenuation during transmission, an adapter 30 must be disposed between the two

HDMI cable lines

10 and 20 for adapting, and a signal amplification circuit (REPEATER) inside the adapter 30 amplifies the signal, so that the transmitted HDMI signal can be transmitted over a longer distance and is not easy to cause signal attenuation. However, when the adaptor 30 is electrically connected to the two

HDMI cable lines

10 and 20, the number of electrical contacts generated increases, and therefore, partial signal attenuation cannot be avoided.

Disclosure of Invention

Therefore, the main objective of the present invention is to provide a device for integrating a signal amplifying circuit with an HDMI cable, which can reduce the occupied space of the HDMI cable and an adapter, and facilitate the user to connect a playing terminal and a display terminal, thereby reducing the manufacturing cost of the signal amplifying circuit and the HDMI cable.

In order to achieve the above object, the utility model provides a can prolong cable structure of HDMI signal transmission distance, include wherein: first plug, cable conductor and second plug. The first plug is composed of a circuit board, an HDMI connector and a shell. One side of the circuit board is electrically connected with a plurality of wires in the cable, the circuit board is electrically connected with a power supply unit and a display unit, and the power supply unit is a power socket and is inserted with a power plug of an external transformer to provide power required during working. When the HDMI signal is amplified, the display unit is lighted up, so that the circuit board is displayed to be working. In addition, the other side of the circuit board is electrically connected with the HDMI connector. After the cable and the circuit board are electrically connected with the HDMI connector, the cable, the circuit board and the HDMI connector are wrapped with a shell, and one end of the HDMI connector, one end of the power supply unit and one end of the display unit extend or are exposed out of the shell. The other end of the cable is electrically connected with the second plug and is provided with a shell, and one end of the shell extends to form an HDMI connector.

The utility model discloses reduce HDMI cable conductor and adapter occupation space to because adapter 30HDMI cable conductor has reduced the contact when connecting, also avoided the decay of partial signal simultaneously.

Drawings

FIG. 1 is a schematic diagram of the electrical connection between a conventional HDMI cable and an adapter;

fig. 2 is an exploded view of the HDMI cable according to the present invention;

fig. 3 is a schematic external perspective view of the HDMI cable according to the present invention;

FIG. 4 is a schematic diagram of the HDMI cable and the HDMI connection port of the display and the player according to the present invention; and the number of the first and second groups,

fig. 5 is a schematic diagram of a signal amplification circuit block according to the present invention.

Description of the main Components

HDMI cable lines

10, 20

Adapter 30

First plug 1 circuit board 11

Power supply unit 111 display unit 112

HDMI connector 12 housing 13

Through

holes

131, 132

Conductor 21 of cable 2

HDMI connector 32 of housing 31

Display 4 HDMI connection port 41

Player 5 HDMI connection port 51

Voltage stabilization unit 113 expander 114

Equalizer 115

Detailed Description

The technical contents and the detailed description of the present invention are described below with reference to the accompanying drawings:

fig. 2 and 3 are exploded and perspective views of the HDMI cable according to the present invention. As shown in the figure: the utility model provides a can prolong cable conductor structure of HDMI signal transmission distance, this cable conductor structure includes: a first plug 1, a cable 2 and a second plug 3; the first plug 1 is plugged into an HDMI connection port (not shown) of a display or a display, the first plug is composed of a circuit board 11, an HDMI connector 12 and a housing 13, and one side of the circuit board 11 is electrically connected with a plurality of wires 21 inside the cable 2. The circuit board 11 is electrically connected to the power supply unit 111 and the display unit 112. The power supply unit 111 is a power socket for plugging a power plug of an external transformer (not shown) to supply a dc power required for the operation of the circuit board 11. The display unit 112 is a light emitting diode, and when a circuit (described in detail below) of the circuit board 11 amplifies the HDMI signal, the display unit 112 is lit, thereby indicating that the circuit board 11 is in operation. The other side of the circuit board 11 is electrically connected to an HDMI connector 12, and the HDMI connector 12 is plugged into a connection port of an HDMI of a display or a play terminal. After the cable 2, the circuit board 11 and the HDMI connector 12 are electrically connected, the cable, the circuit board 11 and the HDMI connector 12 are placed in a mold, plastic or rubber is injected into the mold, the housing 13 can be encapsulated on the cable 2, the circuit board 11 and the HDMI connector 12, the housing 13 is provided with through

holes

131 and 132, the power unit 111 and the display unit 112 are exposed through the through

holes

131 and 132, and one end of the HDMI connector 12 extends to the outside of the housing 13.

One end of the cable 2 is electrically connected with the first plug 1, and the other end is electrically connected with the second plug 3.

The second plug 3 is electrically connected to the cable 2, and has a housing 31 thereon, one end of the housing 31 extends to be provided with an HDMI connector 32, and the HDMI connector 32 is plugged into a connection port of an HDMI of a player or a display.

Fig. 3 and 4 are schematic diagrams of the HDMI cable of the present invention with three-dimensional appearance and the HDMI connection port of the HDMI cable, the display and the player. As shown in the figure, when the first plug 1 of the HDMI cable 2 is plugged into the HDMI connection port 41 of the display 4 and the second plug 3 is plugged into the HDMI connection port 51 of the player 5, when the HDMI cable 2 transmits video and audio signals, the circuit on the circuit board 11 amplifies the video and audio signals and transmits the amplified signals to the display 4, so that the display 4 displays and plays the video and audio signals with high quality.

Fig. 5 is a schematic diagram of a circuit block on the circuit board according to the present invention. As shown, the circuit board 11 has an HDMI signal amplifying circuit thereon, which includes: a power supply unit 111, a voltage stabilization unit 113, an expander 114, an equalizer 115, and a display unit 112; wherein,

the power supply unit 111 is a power socket, which is plugged by a power plug of an external transformer (not shown) to provide a dc power.

The voltage stabilizing unit 113 is electrically connected to the power supply unit 111, and stabilizes the voltage output by the power supply unit 111 within a certain range.

An expander (EXTENDER)114 is electrically connected to the voltage regulator unit 113 and is capable of providing compensation for cable capacitances of up to 3000 pF.

An EQUALIZER (EQUALIZER)115 is electrically connected to the power supply unit 111 for frequency compensation, and can provide loss compensation of up to 40dB for the TMDS line when the frequency is 825 MHz.

The display unit 112 is electrically connected to the equalizer 115, and displays the operating state of the HDMI signal amplifying circuit.

When the signal of the playing terminal 5 is inputted into the expander 114 and the equalizer 115, the expander 114 and the equalizer 115 can extend the transmission distance of the HDMI cable to avoid signal attenuation.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all other equivalent changes and modifications made within the scope of the present invention should be included in the scope of the present invention.

Claims

1. A cable structure capable of extending an HDMI signal transmission distance, comprising:

a cable wire;

the first plug is electrically connected with one end of the cable;

the second plug is electrically connected with the other end of the cable;

the first plug is composed of a circuit board and an HDMI connector, one side of the circuit board is electrically connected with the plurality of wires in the cable, and the other side of the circuit board is electrically connected with the HDMI connector.

2. The cable structure capable of extending the HDMI signal transmission distance according to claim 1, wherein said circuit board is electrically connected to a power supply unit.

3. The cable structure capable of extending the HDMI signal transmission distance according to claim 2, wherein said power supply unit is a power outlet.

4. The cable structure capable of extending the HDMI signal transmission distance according to claim 1, wherein said circuit board is electrically connected to a display unit.

5. The cable structure capable of extending the HDMI signal transmission distance according to claim 4, wherein said display unit is a light emitting diode.

6. The cable structure capable of extending the HDMI signal transmission distance according to claim 1, wherein said HDMI signal amplifying circuit on said circuit board comprises:

a power supply unit for supplying a direct current power;

the voltage stabilizing unit is electrically connected with the power supply unit and stabilizes the voltage output by the power supply unit within a certain range;

the expander is electrically connected with the voltage stabilizing unit and is used for compensating the capacitance of the cable;

the equalizer is electrically connected with the power supply unit and used for frequency compensation; and the number of the first and second groups,

and the display unit is electrically connected with the equalizer and displays the working state of the HDMI signal amplifying circuit.

7. The cable structure capable of extending the HDMI signal transmission distance according to claim 6, wherein said power supply unit is a power outlet.

8. The cable structure capable of extending the HDMI signal transmission distance according to claim 6, wherein said display unit is a light emitting diode.

9. The cable structure capable of extending the HDMI signal transmission distance as claimed in claim 1, wherein a housing is disposed on the cable, the circuit board and the HDMI connector after the cable and the circuit board are electrically connected to the HDMI connector, and one end of the HDMI connector extends to the outside of the housing.

10. The cable structure according to claim 9, wherein the housing has two through holes, so that the power unit and the display unit are exposed.