HDMI signal separation and conversion system

Abstract

The utility model discloses a high-definition multimedia interface (HDMI) signal separation and conversion system, which comprises an HDMI interface and a plurality of signal interfaces, a signal downlink port of the HDMI interface is connected with a signal processing module, and a signal downlink port of the signal processing module is respectively connected with a first signal conversion module, a second signal conversion module and a digital-to-analog conversion module. And a signal downlink port of the signal processing module, a signal downlink port of the first signal conversion module, a signal downlink port of the second signal conversion module and a signal downlink port of the digital-to-analog conversion module are all connected with the signal interface. Separated video signals can be transmitted to display screen equipment which is connected with the signal interface and has a higher-definition display effect, and audio signals can be transmitted to better audio equipment connected with the signal interface.

Description

Technical Field

[0001] This utility model relates to the field of applied electronic product technology, specifically to an HDMI signal separation and conversion system. Background Technology

[0002] HDMI signals can transmit both audio and video signals simultaneously, but some electronic devices such as set-top boxes, DVD players, personal computers, and audio systems cannot directly output the audio signal from an HDMI signal.

[0003] To address this, a splitter was designed to separate the audio signal from the HDMI signal. However, existing splitters are equipped with insufficient signal interfaces. The audio and video signals separated from the HDMI signal can accommodate the data transmission needs of different types of audio and video peripherals, thus limiting the ability to add other audio and video peripherals at any time. Utility Model Content

[0004] To address the technical deficiencies in the background technology, this utility model proposes an HDMI signal separation and conversion system, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0005] An HDMI signal separation and conversion system is disclosed. The system includes an HDMI interface and several signal interfaces. The downstream signal port of the HDMI interface is connected to a signal processing module. The downstream signal ports of the signal processing module are respectively connected to a first signal conversion module, a second signal conversion module, and a digital-to-analog conversion module. The downstream signal ports of the signal processing module, the first signal conversion module, the second signal conversion module, and the digital-to-analog conversion module are all connected to the signal interfaces. The signal processing module, the first signal conversion module, the second signal conversion module, and the digital-to-analog conversion module are all connected to a power supply module, which is connected to an input interface.

[0006] As a further embodiment of this utility model, the signal processing module includes an analog-to-digital converter, a processor, and a DSP chip. The HDMI interface is connected to the analog-to-digital converter to realize analog signal transmission. The analog-to-digital converter is connected to the processor to process digital signals. The DSP chip communicates with the processor. The processor is connected to the first signal conversion module, the second signal conversion module, the digital-to-analog conversion module, and the signal interface to transmit data.

[0007] As a further embodiment of this utility model, the first signal conversion module is a first signal switching logic device. The first signal conversion module is connected to the processor to receive digital signals and is connected to the signal interface to transmit the converted digital signals.

[0008] As a further embodiment of this utility model, the signal interface connected to the first signal conversion module is a first USB-C interface for outputting DP video signals.

[0009] As a further embodiment of this utility model, the second signal conversion module is a second signal switching logic device. The second signal conversion module is connected to the processor to receive digital signals and is connected to the signal interface to transmit the separated digital signals.

[0010] As a further embodiment of this utility model, the signal interface connected to the second signal conversion module is a DisplayPort interface for outputting DP video signals.

[0011] As a further embodiment of this utility model, the input interface is a second USB-C interface, and the input specification of the input interface is 5V / 2A USB input.

[0012] As a further embodiment of this utility model, the signal interface connected to the digital-to-analog converter module is a 3.5mm Audio analog stereo audio output Audio interface.

[0013] As a further embodiment of this utility model, the signal interface connected to the signal processing module is a 5.1-channel digital audio output fiber optic audio interface.

[0014] The first signal conversion module is connected to its connected signal interface via bidirectional signal transmission. The first signal conversion module is connected to the signal processing module via bidirectional signal transmission. The signal processing module is connected to the input interface via bidirectional signal transmission.

[0015] The beneficial effects of this utility model are as follows: This signal separation and conversion system can separate and convert the audio and video signals of the HDMI signal of commonly used high-definition devices, solving the problem that the audio signal in the HDMI signal cannot be directly output. It can not only transmit the separated video signal to the display device with higher display effect connected to the signal interface, but also transmit the audio signal to the better audio device connected to the signal interface. In addition, it is equipped with multiple signal interfaces, which makes it easy to add other audio peripherals and video peripherals at any time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first signal separation and conversion system.

[0017] Figure 2 This is a schematic diagram of the first type of signal separation and conversion system.

[0018] Figure 3 This is a schematic diagram of the principle of the second type of signal separation and conversion system.

[0019] In the diagram, 1 is the HDMI interface; 2 is the signal processing module; 21 is the analog-to-digital converter; 22 is the processor; 23 is the DSP chip; 3 is the first signal conversion module; 31 is the first signal switching logic unit; 4 is the second signal conversion module; 41 is the second signal switching logic unit; 5 is the digital-to-analog conversion module; 6 is the signal interface; 61 is the first USB-C interface; 62 is the DisplayPort interface; 63 is the Audio interface; 64 is the optical audio interface; 7 is the power supply module; 8 is the input interface; and 81 is the second USB-C interface. Detailed Implementation

[0020] This utility model discloses an HDMI signal separation and conversion system, such as Figure 1 and Figure 2 As shown, the signal separation and conversion system includes an HDMI interface 1 and several signal interfaces 6. The downstream signal port of the HDMI interface 1 is connected to a signal processing module 2. The downstream signal ports of the signal processing module 2 are respectively connected to a first signal conversion module 3, a second signal conversion module 4, and a digital-to-analog conversion module 5. The downstream signal ports of the signal processing module 2, the first signal conversion module 3, the second signal conversion module 4, and the digital-to-analog conversion module 5 are all connected to the signal interfaces 6. The signal processing module 2, the first signal conversion module 3, the second signal conversion module 4, and the digital-to-analog conversion module 5 are all connected to a power supply module 7. The power supply module 7 is connected to an input interface 8.

[0021] It should be noted that: commonly used high-definition devices transmit HDMI signals to signal processing module 2 through HDMI interface 1. Signal processing module 2 identifies the HDMI signal and separates the video signal and audio signal. The separated video signal is converted by the first signal conversion module 3 and the second signal conversion module 4 and output from two different signal interfaces 6 respectively. The separated audio signal is converted by digital-to-analog converter module 5 and output from signal interface 6 or directly output to signal interface 6. After the input interface 8 is connected to an external power source, it supplies power to the power supply module 7. The power supply module 7 then transmits electrical energy to signal processing module 2, first signal conversion module 3, second signal conversion module 4 and digital-to-analog converter module 5, so that signal processing module 2, first signal conversion module 3, second signal conversion module 4 and digital-to-analog converter module 5 can work normally.

[0022] This signal separation and conversion system can separate and convert audio and video signals from HDMI signals from commonly used high-definition devices, solving the problem of not being able to directly output audio signals from HDMI signals. It can not only transmit the separated video signals to display devices with higher-definition display effects connected to signal interface 6, but also transmit the audio signals to better audio devices connected to signal interface 6. It is also equipped with multiple signal interfaces 6, which makes it easy to add other audio and video peripherals at any time.

[0023] It needs to be further explained that, such as Figure 2 As shown, the signal processing module 2 includes an analog-to-digital converter 21, a processor 22, and a DSP chip 23. The HDMI interface 1 is connected to the analog-to-digital converter 21 to realize analog signal transmission. The analog-to-digital converter 21 is connected to the processor 22 to process digital signals. The DSP chip 23 and the processor 22 realize data communication. The processor 22 is connected to the first signal conversion module 3, the second signal conversion module 4, the digital-to-analog conversion module 5, and the signal interface 6 respectively to transmit data.

[0024] The analog-to-digital converter 21 converts the HDMI signal transmitted from the HDMI interface 1 into an analog-to-digital signal. The converted digital signal is then transmitted to the processor 22 for processing. The DSP chip 23 separates the audio data, which is then collected and processed by the processor 22. The spectrum is analyzed and identified, and the analyzed audio data is transmitted to the digital-to-analog converter 5 and the signal interface 6, respectively. Meanwhile, the video data is transmitted to the first signal conversion module 3 and the second signal conversion module 4, respectively.

[0025] Specifically, such as Figure 2 As shown, the first signal conversion module 3 is a first signal switching logic unit 31. The first signal conversion module 3 is connected to the processor 22 to receive digital signals and is connected to the signal interface 6 to transmit the converted digital signals.

[0026] The first signal switching logic unit 31 can convert the received video data into a data transmission format adapted to the signal interface 6 connected to the first signal conversion module 3.

[0027] More specifically, such as Figure 2 As shown, the signal interface 6 connected to the first signal conversion module 3 is the first USB-C interface 61 for outputting DP video signals.

[0028] The first USB-C interface 61 is a data transmission interface that allows the simultaneous transmission of DisplayPort (DP) signals and multiple protocols such as USB, Thunderbolt, and MHL through a single Type-C interface, enabling the first USB-C interface 61 to meet the data transmission needs of different high-definition display devices.

[0029] Specifically, such as Figure 2 As shown, the second signal conversion module 4 is a second signal switching logic unit 41. The second signal conversion module 4 is connected to the processor 22 to receive digital signals and is connected to the signal interface 6 to transmit the separated digital signals.

[0030] The second signal switching logic unit 41 can convert the received video data into a data transmission format adapted to the signal interface 6 connected to the second signal conversion module 4.

[0031] More specifically, such as Figure 2 As shown, the signal interface 6 connected to the second signal conversion module 4 is a DisplayPort interface for outputting DP video signals.

[0032] The first USB-C interface 61 is a data transmission interface that only allows the transmission of DisplayPort (DP) signal protocols via the Type-C interface.

[0033] It needs to be further explained that, such as Figure 2 As shown, the input interface 8 is a second USB-C interface 81, and the input specification of the input interface 8 is 5V / 2A USB input.

[0034] The input interface 8 outputs current and voltage to the power supply module 7 via a 5V / 2A USB output specification, while the power supply module 7 outputs electrical energy to the DC load electronic components of the system, thereby achieving a stable supply of current and voltage.

[0035] It needs to be further explained that, such as Figure 2 As shown, the signal interface 6 connected to the digital-to-analog converter module 5 is a 3.5mm Audio analog stereo audio output Audio interface 63.

[0036] Among them, the digital-to-analog conversion module 5 is essentially a digital-to-analog converter, which can convert the digital signal transmitted by the signal processing module 2 into an analog audio signal, and then output analog stereo audio through the 3.5mm headphone jack. The external audio equipment connected to this interface does not require an adapter, which effectively improves the sound effect of the audio equipment.

[0037] It needs to be further explained that, such as Figure 2As shown, the signal interface 6 connected to the signal processing module 2 is a 5.1-channel digital audio output optical fiber audio interface 64.

[0038] Since the audio data separated by the signal processing module is a digital signal, it can directly output 5.1 channel digital audio through the optical fiber audio interface 64.

[0039] It needs to be further explained that, such as Figure 3 As shown, the first signal conversion module 3 is connected to the signal interface 6 via bidirectional signal transmission, the first signal conversion module 3 is connected to the signal processing module 1 via bidirectional signal transmission, and the signal processing module 1 is connected to the input interface 8 via bidirectional signal transmission.

[0040] When the input interface 8 is connected to a computer device and the signal interface 6 connected to the first signal conversion module 3 is connected to a touch screen, the computer device can transmit control signals through the signal transmission path formed by the sequential connection of the signal processing module 1, the first signal conversion module 3, and the signal interface 6 connected to the first signal conversion module 3, enabling the computer device to transmit control signals to the touch screen and control the touch screen. At the same time, the touch screen can transmit control signals through the signal transmission path formed by the sequential connection of the signal interface 6 connected to the first signal conversion module 3, the first signal conversion module 3, and the signal processing module 1, enabling the touch screen to transmit control signals to the computer device and control the computer device.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An HDMI signal separation and conversion system, comprising an HDMI interface and a plurality of signal interfaces, characterized in that, The downlink port of the HDMI interface is connected to the signal processing module. The downlink port of the signal processing module is connected to the first signal conversion module, the second signal conversion module, and the digital-to-analog conversion module. The downlink ports of the signal processing module, the first signal conversion module, the second signal conversion module, and the digital-to-analog conversion module are all connected to the signal interface. The signal processing module, the first signal conversion module, the second signal conversion module, and the digital-to-analog conversion module are all connected to the power supply module, which is connected to the input interface.

2. The signal separation and conversion system according to claim 1, characterized in that, The signal processing module includes an analog-to-digital converter, a processor, and a DSP chip. The HDMI interface is connected to the analog-to-digital converter to achieve analog signal transmission. The analog-to-digital converter is connected to the processor to process digital signals. The DSP chip communicates with the processor. The processor is connected to the first signal conversion module, the second signal conversion module, the digital-to-analog conversion module, and the signal interface to transmit data.

3. The signal separation and conversion system according to claim 2, characterized in that, The first signal conversion module is a first signal switching logic device. The first signal conversion module is connected to the processor to receive digital signals and is connected to the signal interface to transmit the converted digital signals.

4. The signal separation and conversion system according to claim 3, characterized in that, The signal interface connected to the first signal conversion module is the first USB-C interface for outputting DP video signals.

5. The signal separation and conversion system according to claim 2, characterized in that, The second signal conversion module is a second signal switching logic device. The second signal conversion module is connected to the processor to receive digital signals and is connected to the signal interface to transmit the separated digital signals.

6. The signal separation and conversion system according to claim 5, characterized in that, The signal interface connected to the second signal conversion module is a DisplayPort interface for outputting DP video signals.

7. The signal separation and conversion system according to claim 1, characterized in that, The input interface is a second USB-C interface, and the input specification of the input interface is 5V / 2A USB input.

8. The signal separation and conversion system according to claim 1, characterized in that, The signal interface connected to the digital-to-analog converter module is a 3.5mm Audio analog stereo audio output interface.

9. The signal separation and conversion system according to claim 1, characterized in that, The signal processing module is connected to a 5.1-channel digital audio output optical fiber audio interface.

10. The signal separation and conversion system according to claim 1, characterized in that, The first signal conversion module is connected to its connected signal interface via bidirectional signal transmission. The first signal conversion module is connected to the signal processing module via bidirectional signal transmission. The signal processing module is connected to the input interface via bidirectional signal transmission.

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