CN210183436U

CN210183436U - HDMI audio separator

Info

Publication number: CN210183436U
Application number: CN201921627679.1U
Authority: CN
Inventors: Yingjie Zhao; 赵英杰; Yuewen Chen; 陈岳文
Original assignee: Dongguan City G-Max Electronics Co Ltd
Current assignee: Shenghong Electronic Technology (Dongguan) Co.,Ltd.
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-03-24
Anticipated expiration: 2029-09-27

Abstract

The utility model provides a pair of HDMI audio frequency separator, including casing and the circuit board of setting in the casing, the circuit board includes the audio frequency separation chip that power module and power module electricity are connected mutually, and the audio frequency separation chip is connected with HDMI input module, MCU control module, EDID control module, audio output module and HDMI distribution module electricity mutually respectively, the audio frequency separation chip is controlled through MCU control module, HDMI distribution module is connected with HDMI switching module, HDMI switching module is connected with the video output end electricity. Compared with the prior art, the HDMI audio separator provided by the utility model realizes the purpose of separating the HDMI signal of an input source into a video and a plurality of audio outputs; the HDMI interface design of input and output ends can isolate audio input signals, reduces mutual interference of the signals, has an EDID management function, and is high in transmission bandwidth.

Description

HDMI audio separator

Technical Field

The utility model relates to a multimedia transmission equipment technical field specifically is a HDMI audio frequency separator.

Background

At present, the development of digital interfaces is driven by the coming of the high definition time, and a High Definition Multimedia Interface (HDMI) is a transmission interface developed for next-generation multimedia audio/video equipment, and the HDMI can provide a data transmission bandwidth as high as 10.2Gbps, can transmit uncompressed audio signals and high-resolution video signals, and simultaneously can ensure the transmission of audio/video signals with the highest quality without performing digital/analog or analog/digital conversion before signal transmission. The HDMI audio separator sold in the market at present does not have an EDID management function, and a user cannot select 2CH and 5.1CH audio formats in the using process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a HDMI audio separator to solve the technical problem in the background art.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a HDMI audio separator, includes the casing and sets up the circuit board in the casing, the circuit board includes the audio separation chip that power module and power module electricity are connected mutually, and the audio separation chip is connected mutually with HDMI input module, MCU control module, EDID control module, audio output module and HDMI distribution module electricity respectively, the audio separation chip is controlled through MCU control module, HDMI distribution module is connected with HDMI switching module, HDMI switching module is connected with the video output electricity.

The video output includes a first output and a second output.

The Audio output module comprises an SPDIF interface, an Audio interface and a coaxial output interface.

The SPDIF interface is connected with the sound equipment through an optical fiber line.

The model of the MCU control module is EPF 025R.

The model of the audio separation chip is EP916 ASQ.

The model of the HDMI distribution module is EP9162 SQ.

The shell is of a rectangular structure, a plurality of indicator lamps are arranged outside the shell, and the indicator lamps are respectively and electrically connected with the HDMI input module and the video output end.

An output switching key is arranged on the shell.

Compared with the prior art, the HDMI audio separator provided by the utility model realizes the purpose of separating the HDMI signal of an input source into a video and a plurality of audio outputs; the input and output end HDMI interface design can isolate audio input signals, reduces the mutual interference of the signals, has an EDID management function, has high transmission bandwidth, high stability, low power consumption coefficient and strong real-time performance, and SPDIF optical fiber output supports digital audio formats such as Dolby digital AC3, DTS, LPCM and the like and supports 5.1CH output.

Drawings

FIG. 1: a block schematic diagram of an HDMI audio separator;

FIG. 2: an HDMI audio splitter front view;

FIG. 3: an HDMI audio splitter rear view;

FIG. 4: an audio separation chip circuit diagram;

FIG. 5: MCU control module circuit diagram;

FIG. 6: HDMI distribution module circuit diagram.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Specific example 1: please refer to fig. 1 to fig. 6, in an embodiment of the present invention, an HDMI audio separator includes a housing 14 and a circuit board disposed in the housing 14, wherein the circuit board includes an audio separation chip 2 electrically connected to a power module 1 and the power module 1, the audio separation chip 2 is electrically connected to an HDMI input module 3, an MCU control module 4, an EDID control module 5, an audio output module 6 and an HDMI distribution module 7, the audio separation chip 2 is controlled by the MCU control module 4, the MCU control module 4 is of an EPF025R type, and the audio separation chip 2 is of an EP916ASQ type; the HDMI distribution module 7 is connected with the HDMI switching module 11, the type of the HDMI distribution module 7 is EP9162SQ, and the HDMI switching module 11 is electrically connected with a video output end. The HDMI input module 3 is used for connecting a high-definition video source to access a first high-definition audio and video signal.

The video output comprises a first output 12 and a second output 13. The interfaces of the first output end 12 and the second output end 13 both adopt HDMI interfaces.

The Audio output module 6 comprises an SPDIF interface 8, an Audio interface 9 and a coaxial output interface 10. The SPDIF interface 8 is connected to the audio equipment via an optical fiber line.

The shell 14 is of a rectangular structure, three indicator lamps 16 and a power control switch 15 are arranged outside the shell 14, and the indicator lamps 16 are respectively and electrically connected with the HDMI input module 3 and the video output end. The indicator light 16 arranged on the shell 14 is convenient for a user to know the state of the corresponding port; an output switching key 17 is arranged on the shell 14, and three prompting lamps 18 are arranged on one side of the output switching key 17 and respectively represent three output modes.

The output switching key 17 is electrically connected with the EDID control module 5, and the EDID control module 5 can select audio signal output, for example, when audio output is required to be switched, the EDID switch can be switched to different modes, for example, when earphone output is required, the EDID switch is placed in a 2CH mode, and when 5.1 sound channel output is required, the EDID switch is placed in a 5.1CH mode. Therefore, the audio output switching can be conveniently carried out by the user.

It is obvious to a person skilled in the art that the invention is not restricted to details of the foregoing exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An HDMI audio splitter, comprising: including casing and the circuit board of setting in the casing, the circuit board includes the audio separation chip that power module and power module electricity are connected mutually, and audio separation chip is connected mutually with HDMI input module, MCU control module, EDID control module, audio output module and HDMI distribution module electricity respectively, the audio separation chip is controlled through MCU control module, HDMI distribution module is connected with HDMI switching module, HDMI switching module is connected with the video output electricity.

2. The HDMI audio splitter of claim 1, wherein: the video output includes a first output and a second output.

3. The HDMI audio splitter of claim 1, wherein: the Audio output module comprises an SPDIF interface, an Audio interface and a coaxial output interface.

4. An HDMI audio splitter according to claim 3, wherein: the SPDIF interface is connected with the sound equipment through an optical fiber line.

5. The HDMI audio splitter of claim 1, wherein: the model of the MCU control module is EPF 025R.

6. The HDMI audio splitter of claim 1, wherein: the model of the audio separation chip is EP916 ASQ.

7. The HDMI audio splitter of claim 1, wherein: the model of the HDMI distribution module is EP9162 SQ.

8. The HDMI audio splitter of claim 1, wherein: the shell is of a rectangular structure, a plurality of indicator lamps are arranged outside the shell, and the indicator lamps are respectively and electrically connected with the HDMI input module and the video output end.

9. The HDMI audio splitter of claim 1, wherein: an output switching key is arranged on the shell.