CN218352555U

CN218352555U - HDMI amplifier and HDMI line

Info

Publication number: CN218352555U
Application number: CN202222439737.6U
Authority: CN
Inventors: 王建杰
Original assignee: Zhongshan Ksin Electronics Co ltd
Current assignee: Zhongshan Ksin Electronics Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-01-20
Anticipated expiration: 2032-09-14

Abstract

The utility model discloses an HDMI amplifier and an HDMI cable, which comprises a signal processing module; the signal input module comprises a first differential signal terminal, the input end of the input power taking module is electrically connected with the first differential signal terminal, and the signal input module is electrically connected with the signal processing module; the output end of the input power taking module is respectively and electrically connected with the input ends of the signal output module and the voltage-stabilizing power supply module, and the output end of the voltage-stabilizing power supply module is electrically connected with the signal processing module; the input power taking module can extract the voltage on the first differential signal terminal for the signal processing module to work, so that the HDMI amplifier can be compatible with more devices, and especially can be better compatible under the condition that the power of a device end power supply is insufficient.

Description

HDMI amplifier and HDMI line

Technical Field

The utility model relates to a HDMI technical field, especially a HDMI amplifier and HDMI line.

Background

A High Definition Multimedia Interface (HDMI) is a fully digital video and audio transmission Interface, and can transmit uncompressed video and audio signals; the HDMI amplifier is connected to the end of a long-distance HDMI cable, operates by reproducing video and audio signals of a signal source, and then transmits the signals to a cable connected to a display over a long distance; the power supply required by the HDMI amplifier is generally the power supply of the device side, but many devices have the problem of insufficient power supply, so that the HDMI amplifier cannot be normally used.

Disclosure of Invention

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a HDMI amplifier and HDMI line that can better compatible equipment, more stable work.

According to the utility model discloses HDMI amplifier of first aspect embodiment includes: a signal processing module; the signal input module comprises a first differential signal terminal, the input end of the input power taking module is electrically connected with the first differential signal terminal, and the signal input module is electrically connected with the signal processing module; the output end of the input electricity taking module is electrically connected with the input ends of the signal output module and the voltage-stabilizing power supply module respectively, and the output end of the voltage-stabilizing power supply module is electrically connected with the signal processing module.

According to the utility model discloses HDMI amplifier has following beneficial effect at least: the input power taking module can extract the voltage on the first differential signal terminal to be used for the signal processing module to work, so that the HDMI amplifier can be compatible with more devices, and particularly can be better compatible under the condition that the power of a device end power supply is insufficient.

According to the utility model discloses HDMI amplifier still gets the electric module including output, the signal output module includes second difference signal terminal, output get the input of electric module with the output electricity of electric module is connected to the input, output get the output of electric module with second difference signal terminal electricity is connected, makes HDMI amplifier compatibility better.

According to the utility model discloses HDMI amplifier, the input is got the electric module and is included first ferrite bead and diode D1, the one end of first ferrite bead with first difference signal terminal electricity is connected, the other end of first ferrite bead is connected with diode D1's positive pole electricity, diode D1's negative pole respectively with steady voltage power supply module with signal output module electricity is connected, and the ferrite bead mainly used restraines the high frequency loss direct current electric energy and normally switches on.

According to the utility model discloses HDMI amplifier, first differential signal terminal with first ferrite bead has a plurality ofly respectively, and is a plurality of first ferrite bead is with a plurality of first differential signal terminal one-to-one is connected, and is a plurality of first ferrite bead is connected with diode D1's positive pole electricity respectively.

According to the utility model discloses HDMI amplifier, steady voltage power supply module includes voltage stabilizing module, voltage stabilizing module includes first switching power supply U1, electric capacity C1, first filter circuit and second filter circuit, the input of first switching power supply U1, one end of electric capacity C1 respectively with the output electricity of getting electric module is connected, the SW end of first switching power supply U1 with first filter circuit input electricity is connected, the FB end of first switching power supply U1 with the input electricity of second filter circuit is connected, the output of first filter circuit, the output of second filter circuit, the other end of electric capacity C1 and the earthing terminal of first switching power supply U1 ground connection respectively, and the output of second filter circuit is the output of voltage stabilizing module; the voltage stabilizing module performs further filtering and voltage stabilizing on the voltage output by the input power taking module, so that the output voltage is more stable, and more devices can be compatible.

According to the utility model discloses HDMI amplifier, steady voltage power supply module include with the first power module that steady voltage module's output electricity is connected, first power module includes inductance L2 and electric capacity C3, inductance L2's one end with steady voltage module's output electricity is connected, and inductance L2's the other end is connected with electric capacity C3's one end electricity, and electric capacity C3's other end ground connection, and inductance L2's the other end output first voltage, and inductance L2 and electric capacity C3 further filter to the voltage of steady voltage module output, and first voltage is one of the required operating voltage of signal processing module.

According to the utility model discloses HDMI amplifier, steady voltage power supply module include with the second power supply module that steady voltage module's output electricity is connected, second power supply module includes inductance L3, electric capacity C4 and electric capacity C5, inductance L3's one end and electric capacity C4's one end respectively with steady voltage module's output electricity is connected, and inductance L3's the other end is connected with electric capacity C5's one end electricity, and electric capacity C4's the other end and electric capacity C5's the other end ground connection respectively, and inductance L3's other end output second voltage, and further filtering is done to the voltage of steady voltage module output to second voltage is another operating voltage of signal processing module.

According to the utility model discloses the HDMI amplifier, the steady voltage power module includes the third power module of being connected with the output electricity of steady voltage module, the third power module includes second switching power supply U2, third filter circuit, fourth filter circuit, fifth filter circuit and sixth filter circuit, second switching power supply U2 includes SW1 end, SW2 end, FB1 end and FB2 end, the output of steady voltage module respectively with the input of third filter circuit, the input electricity of fourth filter circuit is connected, the output of third filter circuit and the FB1 end electricity of second switching power supply U2 are connected, the output of fourth filter circuit and the SW1 end electricity of second switching power supply U2 are connected, the FB2 end of second switching power supply U2 and the input electricity of fifth filter circuit are connected, the SW2 end of second switching power supply U2 and the input electricity of sixth filter circuit are connected, the output of fifth filter circuit and the output electricity of sixth filter circuit are connected and output the third voltage respectively; the third power supply module further filters the voltage output by the voltage stabilizing module, and the third voltage is another working voltage of the signal processing module.

According to the utility model discloses the HDMI line of second aspect embodiment, including HDMI input interface, HDMI output interface, with HDMI input interface connects's first cable, with HDMI output interface connects's second cable and as above-mentioned arbitrary HDMI amplifier, signal input module with HDMI input interface electricity is connected, signal output module with HDMI output interface electricity is connected.

According to the utility model discloses HDMI line has following beneficial effect at least: the two ends of the HDMI amplifier are respectively connected with the first cable and the second cable so as to prolong the transmission distance of the HDMI line, amplify signals and guarantee the transmission effect.

According to the utility model discloses HDMI line still includes the sleeve pipe, sheathed tube one end cup joints in order to shelter from on the first cable HDMI input interface, the sheathed tube other end cup joints in order to shelter from on the second cable HDMI output interface to make the sleeve pipe also can protect the HDMI amplifier, the sleeve pipe can adopt the metal material, adopts this sleeve pipe can shield electromagnetic interference, and has dampproofing effect, guarantees HDMI amplifier and HDMI line steady operation.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The following description will further describe the embodiments of the present invention with reference to the accompanying drawings;

fig. 1 is a circuit block diagram of an HDMI amplifier;

FIG. 2 is a circuit schematic of a signal processing module of the HDMI amplifier;

FIG. 3 is a schematic circuit diagram of a signal input module, a first differential line power-taking module, a second differential line power-taking module and a signal output module of the HDMI amplifier;

FIG. 4 is a schematic circuit diagram of a regulated power supply module of the HDMI amplifier;

fig. 5 is a structural view of an HDMI cable;

fig. 6 is a structural view of a sleeve of the HDMI cable.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

Referring to fig. 1 to 4, the HDMI amplifier according to the embodiment of the present invention includes a signal processing module 100, a signal input module 200, an input power taking module 210, a signal output module 300, and a voltage stabilizing power supply module, wherein the signal input module 200 includes a first differential signal terminal, an input end of the input power taking module 210 is electrically connected to the first differential signal terminal, and the signal input module 200 is electrically connected to the signal processing module 100; the output end of the input power-taking module 210 is electrically connected with the input ends of the signal output module 300 and the voltage-stabilizing power supply module respectively, and the output end of the voltage-stabilizing power supply module is electrically connected with the signal processing module 100; the input power-taking module 210 can extract the voltage on the first differential signal terminal for the signal processing module 100 to work, so that the HDMI amplifier can be compatible with more devices, and especially can be better compatible under the condition of insufficient power of the device-side power supply.

As shown in fig. 2, in some embodiments, the signal processing module 100 employs a common HDMI signal processing chip, the HDMI signal processing chip has a plurality of voltage pins, including a TVCC10 pin, a RAVCC10 pin, a URDBG pin, and an OVDD33 pin, the voltage-stabilizing power supply module includes a voltage-stabilizing module 400, a first power supply module 410, a second power supply module 420, a third power supply module 430, and a fourth power supply module, which are respectively electrically connected to an output terminal of the voltage-stabilizing module 400, wherein the first power supply module 410 outputs a first voltage to power the TVCC10 pin, the second power supply module 420 outputs a second voltage to power the RAVCC10 pin, the third power supply module 430 outputs a third voltage to power the URDBG pin, and the fourth power supply module 440 outputs a fourth voltage to power the OVDD33 pin; that is, the input power-taking module 210 can extract the voltage on the first differential signal terminal and output the first voltage, the second voltage, the third voltage and the fourth voltage through the voltage-stabilizing power supply module to supply power to the plurality of voltage pins of the signal processing module 100, so that the HDMI amplifier can be compatible with more devices, and especially can be better compatible under the condition that the power supply of the device terminal is insufficient.

As shown in fig. 3 and fig. 5, in some embodiments, the signal input module 200 adopts an HDMI high-definition interface CN1, where the HDMI high-definition interface CN1 includes a clock pin, a data control pin, and a plurality of first differential signal pins (i.e., first differential signal terminals), and an input end of the HDMI high-definition interface CN1 is electrically connected to the HDMI input interface 511 on the first cable 521; the input power-taking module 210 comprises a plurality of first ferrite beads 211 and a diode D1, the plurality of first ferrite beads 211 are electrically connected with a plurality of first differential signal pins in a one-to-one correspondence manner, the plurality of first ferrite beads 211 are electrically connected with an anode of the diode D1, and the first ferrite beads 211 can suppress and absorb high-frequency noise and spike interference on the first differential signal pins.

The signal output module 300 adopts an HDMI high-definition interface CN2, and an output end of the HDMI high-definition interface CN2 is electrically connected with the HDMI output interface 512 on the second cable 522; the output power-taking module 320 includes a plurality of second ferrite beads 321 and a diode D2, the plurality of second ferrite beads 321 are electrically connected to the plurality of second differential signal terminals in a one-to-one correspondence manner, and the plurality of second ferrite beads 321 are electrically connected to the anode of the diode D2, respectively, and the second ferrite beads 321 can suppress and absorb high-frequency noise and spike interference output from the input power-taking module 210, so that the HDMI amplifier has better compatibility.

As shown in fig. 4, the voltage stabilizing module 400 includes a first switching power supply U1, a capacitor C1, a first filter circuit 411 and a second filter circuit 412, the first switching power supply U1 is a switching power supply chip, the first filter circuit 411 includes an inductor L1, the second filter circuit 412 includes a resistor R1, a resistor R2 and a capacitor C2, one end of the capacitor C1 and one end of the first switching power supply U1 are electrically connected to the output end of the input power module 210, the SW end of the first switching power supply U1 is electrically connected to one end of the inductor L1, the FB end of the first switching power supply U1 is electrically connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is electrically connected to one end of the capacitor C2, the other end of the inductor L1, the other end of the resistor R1, the other end of the capacitor C1 and the ground end of the first switching power supply U1 are respectively grounded, and the other ends of the inductor L1 and the resistor R2 are output ends of the voltage stabilizing module 400; the voltage stabilizing module 400 further filters and stabilizes the voltage output by the input power taking module 210, so that the output voltage is more stable and is compatible with more devices.

First power module 410 includes inductance L2 and electric capacity C3, and the one end of inductance L2 is connected with voltage stabilizing module 400's output electricity, and the other end of inductance L2 is connected with electric capacity C3's one end electricity, and electric capacity C3's other end ground connection, and inductance L2's the other end output first voltage, and inductance L2 and electric capacity C3 further filter the voltage of voltage stabilizing module 400 output, and first voltage is the TVCC10 pin power supply of signal processing module 100.

The second power supply module 420 includes an inductor L3, a capacitor C4 and a capacitor C5, one end of the inductor L3 and one end of the capacitor C4 are respectively electrically connected to the output end of the voltage stabilizing module 400, the other end of the inductor L3 is electrically connected to one end of the capacitor C5, the other end of the capacitor C4 and the other end of the capacitor C5 are respectively grounded, the other end of the inductor L3 outputs a second voltage, the second power supply module 420 further filters the voltage output by the voltage stabilizing module 400, and the second voltage supplies power to the pin RAVCC10 of the signal processing module 100.

The third power supply module 430 includes a second switching power supply U2, a third filter circuit 433, a fourth filter circuit 434, a fifth filter circuit 435, and a sixth filter circuit 436, the second switching power supply U2 employs a switching power supply chip, the second switching power supply U2 includes a SW1 terminal, a SW2 terminal, a FB1 terminal, and a FB2 terminal, the third filter circuit 433 includes a capacitor C6 and a resistor R3 that are connected in parallel with each other, the fourth filter circuit 434 includes an inductor L4 and a capacitor C7, one end of the inductor L4 and one end of the capacitor C7 are respectively electrically connected to the output terminal of the voltage stabilization module 400, the other end of the capacitor C7 is grounded, the other end of the inductor L4 is electrically connected to the SW1 terminal of the second switching power supply U2, and the output terminal of the third filter circuit 433 is electrically connected to the FB1 terminal of the second switching power supply U2; the fifth filter circuit 435 includes a capacitor C8, a capacitor C9, and a resistor R4, the resistor R4 and the capacitor C8 are connected in parallel and then connected in series with the capacitor C9, the other end of the capacitor C9 is grounded, and the resistor R4 and the capacitor C8 are electrically connected to the FB2 end of the second switching power supply U2, respectively; the sixth filter circuit 436 includes an inductor L5, the SW2 end of the second switching power supply U2 is electrically connected to one end of the inductor L5, and the other end of the inductor L5 outputs a third voltage; the third power supply module 430 further filters the voltage output by the voltage regulator module, and the third voltage supplies power to the URDBG pin of the signal processing module 100.

The fourth power supply module 440 includes a capacitor C10 and an inductor L6, one end of the inductor L6 is electrically connected to the other end of the inductor L5, the other end of the inductor L6 is electrically connected to the capacitor C10, the other end of the capacitor C10 is grounded, the other end of the inductor L6 outputs a fourth voltage, and the fourth voltage supplies power to the OVDD33 pin of the signal processing module 100.

As shown in fig. 5, the present invention further includes an HDMI cable, the HDMI cable includes an HDMI input interface 511, an HDMI output interface 512, a first cable 521 connected to the HDMI input interface 511, a second cable 522 connected to the HDMI output interface 512, and the HDMI amplifier, the signal input module 200 is electrically connected to the HDMI input interface 511, and the signal output module 300 is electrically connected to the HDMI output interface 512; the two ends of the HDMI amplifier are connected with the first cable and the second cable respectively to prolong the transmission distance of the HDMI line, amplify signals and guarantee the transmission effect.

As shown in fig. 6, in some embodiments, the HDMI connector further includes a sleeve 530, one end of the sleeve 530 is sleeved on the first cable 521 to shield the HDMI input interface 511, and the other end of the sleeve 530 is sleeved on the second cable 522 to shield the HDMI output interface 512, so that the sleeve 530 can also protect the HDMI connector, and the sleeve 530 may be made of a metal material, and the sleeve may shield electromagnetic interference, and has a moisture-proof function, so as to ensure stable operation of the HDMI connector and the HDMI cable.

In some embodiments, the end of the sleeve 530 is provided with a connection ring 531, the connection ring 531 is screwed or clamped with the sleeve 530, the connection ring 531 can be sleeved on the first cable 521 and the second cable 522, the connection ring 531 is provided with a connection hole 532, and a screw can pass through the connection hole 532 to fixedly connect the connection ring 531 with the first cable 521 and the second cable 522.

In some embodiments, the HDMI cable includes an HDMI male interface 540, the first cable 521 or the second cable 522 is connected to the HDMI male interface 540, and the HDMI amplifier is disposed between the HDMI male interface and the first cable 521 or the second cable 522, wherein the signal output module 300 is electrically connected to the HDMI male interface 540, and the signal input module 200 is electrically connected to the first cable 521 or the second cable 522.

It is readily understood by those skilled in the art that the above-described preferred modes can be freely combined and superimposed without conflict.

The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct or indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. An HDMI amplifier, comprising:

a signal processing module (100);

the signal input module (200) comprises a first differential signal terminal, the input end of the input power taking module (210) is electrically connected with the first differential signal terminal, and the signal input module (200) is electrically connected with the signal processing module (100);

the power supply system comprises a signal output module (300) and a voltage-stabilizing power supply module, wherein the output end of the input power taking module (210) is electrically connected with the input ends of the signal output module (300) and the voltage-stabilizing power supply module respectively, and the output end of the voltage-stabilizing power supply module is electrically connected with the signal processing module (100).

2. The HDMI amplifier of claim 1, wherein: the power supply circuit is characterized by further comprising an output power taking module (320), wherein the signal output module (300) comprises a second differential signal terminal, the output end of the output power taking module (320) is electrically connected with the output end of the input power taking module (210), and the output end of the output power taking module (320) is electrically connected with the second differential signal terminal.

3. The HDMI amplifier of claim 1, wherein: the input power taking module (210) comprises a first ferrite bead (211) and a diode D1, one end of the first ferrite bead (211) is electrically connected with the first differential signal terminal, the other end of the first ferrite bead (211) is electrically connected with the anode of the diode D1, and the cathode of the diode D1 is respectively electrically connected with the voltage-stabilizing power supply module and the signal output module (300).

4. The HDMI amplifier of claim 3, wherein: the first differential signal terminals and the first ferrite beads (211) are respectively provided with a plurality of first ferrite beads (211), the first ferrite beads (211) are electrically connected with the first differential signal terminals in a one-to-one correspondence manner, and the first ferrite beads (211) are respectively electrically connected with anodes of diodes D1.

5. The HDMI amplifier of claim 1, wherein: the voltage-stabilizing power supply module comprises a voltage-stabilizing module (400), the voltage-stabilizing module (400) comprises a first switching power supply U1, a capacitor C1, a first filter circuit (411) and a second filter circuit (412), one end of an input end of the first switching power supply U1 and one end of the capacitor C1 are respectively electrically connected with an output end of the input power-taking module (210), a SW end of the first switching power supply U1 is electrically connected with an input end of the first filter circuit (411), a FB end of the first switching power supply U1 is electrically connected with an input end of the second filter circuit (412), an output end of the first filter circuit (411), an output end of the second filter circuit (412), the other end of the capacitor C1 and a grounding end of the first switching power supply U1 are respectively grounded, and an output end of the second filter circuit (412) is an output end of the voltage-stabilizing module (400).

6. The HDMI amplifier of claim 5, wherein: the voltage-stabilizing power supply module comprises a first power supply module (410) electrically connected with the output end of the voltage-stabilizing module (400), the first power supply module (410) comprises an inductor L2 and a capacitor C3, one end of the inductor L2 is electrically connected with the output end of the voltage-stabilizing module (400), the other end of the inductor L2 is electrically connected with one end of the capacitor C3, the other end of the capacitor C3 is grounded, and the other end of the inductor L2 outputs a first voltage.

7. The HDMI amplifier of claim 5, wherein: the voltage-stabilizing power supply module comprises a second power supply module (420) electrically connected with the output end of the voltage-stabilizing module (400), the second power supply module (420) comprises an inductor L3, a capacitor C4 and a capacitor C5, one end of the inductor L3 and one end of the capacitor C4 are respectively electrically connected with the output end of the voltage-stabilizing module (400), the other end of the inductor L3 is electrically connected with one end of the capacitor C5, the other end of the capacitor C4 and the other end of the capacitor C5 are respectively grounded, and the other end of the inductor L3 outputs a second voltage.

8. The HDMI amplifier of claim 5, wherein: the voltage-stabilizing power supply module comprises a third power supply module (430) electrically connected with the output end of the voltage-stabilizing module (400), the third power supply module (430) comprises a second switching power supply U2, a third filter circuit (433), a fourth filter circuit (434), a fifth filter circuit (435) and a sixth filter circuit (436), the second switching power supply U2 comprises a SW1 end, a SW2 end, a FB1 end and a FB2 end, the output end of the voltage-stabilizing module (400) is respectively electrically connected with the input end of the third filter circuit (433) and the input end of the fourth filter circuit (434), the output end of the third filter circuit (433) is electrically connected with the FB1 end of the second switching power supply U2, the output end of the fourth filter circuit (434) is electrically connected with the SW1 end of the second switching power supply U2, the FB2 end of the second switching power supply U2 is electrically connected with the input end of the fifth filter circuit (435), the SW2 end of the second switching power supply U2 is electrically connected with the SW1 end of the sixth filter circuit (436), and the output end of the sixth filter circuit (436) is electrically connected with the output end of the sixth filter circuit (436).

9. An HDMI cable, comprising: the HDMI amplifier comprises an HDMI input interface (511), an HDMI output interface (512), a first cable (521) connected with the HDMI input interface (511), a second cable (522) connected with the HDMI output interface (512), and the HDMI amplifier as claimed in any one of claims 1 to 8, wherein the signal input module (200) is electrically connected with the HDMI input interface (511), and the signal output module (300) is electrically connected with the HDMI output interface (512).

10. The HDMI cable of claim 9, wherein: the HDMI controller further comprises a sleeve (530), one end of the sleeve (530) is sleeved on the first cable (521) to shield the HDMI input interface (511), and the other end of the sleeve is sleeved on the second cable (522) to shield the HDMI output interface (512).