An eARC audio return connector based on the HDMI 2.1 standard

Abstract

This utility model relates to the field of audio return link connectors, and discloses an eARC audio return link connector based on the HDMI 2.1 standard. It includes a connector housing, an HDMI port pin assembly, an interface pin assembly, a signal lead bus, a PCB motherboard, an eARC control module, and signal cables. The HDMI port pin assembly is enclosed by the HDMI port housing. An interface pin assembly is located on the left side of the HDMI port pin assembly. The eARC control module is integrated on the upper end of the PCB motherboard, and the signal cables are connected to the other end of the PCB motherboard. The PCB motherboard is covered with a metal shield, which is grounded for electromagnetic interference shielding. This utility model integrates the eARC module, high-speed chip, and anti-interference device into a single structure, achieving stable, high-bandwidth, and low-interference audio return link functionality, suitable for high-fidelity audio and video transmission scenarios such as home theaters and smart TVs.

Description

Technical Field

[0001] This utility model relates to the field of audio return connectors, specifically an eARC audio return connector based on the HDMI 2.1 standard. Background Technology

[0002] HDMI (High Definition Multimedia Interface) technology is the mainstream solution for modern audio and video transmission. With the popularization of home theater systems and smart TVs, higher demands are placed on the quality and stability of audio signal transmission. Traditional ARC (Audio Return Channel) is no longer able to meet the needs of high-quality audio transmission due to bandwidth and protocol limitations.

[0003] The eARC (Enhanced Audio Return Channel) technology introduced in the HDMI 2.1 standard supports higher bandwidth and a wider range of audio formats (such as Dolby Atmos and DTS:X). However, current eARC connectors on the market have a relatively simple structure, poor anti-interference capabilities, unstable contact, and most have not optimized their internal modular structure, making it difficult to guarantee long-term connection stability. Therefore, there is an urgent need for an eARC audio return connector based on the HDMI 2.1 standard to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide an eARC audio return connector based on the HDMI 2.1 standard to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An eARC audio return connector based on the HDMI 2.1 standard includes a connector housing, an HDMI port pin assembly, an interface pin assembly, a signal lead bus, a PCB motherboard, an eARC control module, and signal cables.

[0007] The HDMI port pin assembly is enclosed by the HDMI port housing. An interface pin assembly is provided on the left side of the HDMI port pin assembly. An eARC control module is integrated on the upper end of the PCB motherboard. The signal cable is connected to the other end of the PCB motherboard. The PCB motherboard is covered with a metal shield, which is grounded for electromagnetic interference shielding.

[0008] The eARC control module works in conjunction with the high-speed data transmission chip to complete the signal encoding, decoding and transmission of audio return signals;

[0009] The HDMI port pin assembly is equipped with an interface pin assembly, which is connected to the PCB motherboard by soldering or crimping.

[0010] It also includes an anti-interference filter chip and an EMI shielding layer, which are respectively set on the PCB motherboard and its peripheral structure to eliminate high-frequency noise;

[0011] It also includes cable retaining sleeves and RF suppression rings; the cable retaining sleeves are used to secure signal cables; the interface pin assembly is connected to the PCB motherboard and is used to ground all shielded components uniformly.

[0012] Preferably, a grounding pin is provided on the lower right side of the PCB motherboard.

[0013] Preferably, a high-speed data transmission chip is installed on the upper right side of the interference filtering chip.

[0014] Preferably, the PCB motherboard is supported by a support substrate.

[0015] Preferably, a signal lead array is connected to the right side of the signal cable.

[0016] Preferably, an eARC signal transmission module is provided on the lower right side of the high-speed data transmission chip.

[0017] Compared with the prior art, the eARC audio return connector based on the HDMI 2.1 standard of this utility model has the following advantages: the HDMI plug assembly and the signal cable group are connected by the cable fixing sheath. The internal high-speed transmission and stable audio return are achieved through the PCB motherboard, high-speed data chip, eARC control module, electromagnetic shielding layer, etc. The overall structure is compact, easy to assemble and improves anti-interference ability. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the eARC audio return connector based on the HDMI 2.1 standard of this utility model;

[0020] Figure 2 This is an overall structural diagram of the internal structure of the eARC audio return connector based on the HDMI 2.1 standard of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the eARC audio return connector based on the HDMI 2.1 standard of this utility model.

[0022] In the diagram: 1. HDMI port pin assembly; 2. HDMI port housing; 3. Ground pin; 4. PCB motherboard; 5. eARC control module; 6. Anti-interference filter chip; 7. High-speed data transmission chip; 8. Support substrate; 9. Signal lead bus; 10. Interface pin assembly; 11. Signal cable; 12. Metal shielding cover; 13. RF suppression ring; 14. EMI shielding layer; 15. eARC signal transmission module; 16. Cable fixing sleeve. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.

[0024] Please see Figure 1-3 An eARC audio return connector based on the HDMI 2.1 standard includes a connector housing, an HDMI port pin assembly 1, an interface pin assembly 10, a signal lead bus 9, a PCB motherboard 4, an eARC control module 5, and a signal cable 11.

[0025] The HDMI port pin assembly 1 is enclosed by the HDMI port housing 2. An interface pin assembly 10 is provided on the left side of the HDMI port pin assembly 1. The eARC control module 5 is integrated on the upper end of the PCB motherboard 4. The signal cable 11 is connected to the other end of the PCB motherboard 4. The PCB motherboard 4 is covered with a metal shield 12, and the metal shield 12 is grounded for electromagnetic interference shielding.

[0026] The eARC control module 5 works in conjunction with the high-speed data transmission chip 7 to complete the signal encoding, decoding and transmission of audio return.

[0027] The HDMI port pin assembly 1 is provided with an interface pin assembly 10, which is connected to the PCB motherboard by soldering or crimping.

[0028] It also includes an anti-interference filter chip 6 and an EMI shielding layer 14, which are respectively disposed on the PCB motherboard 4 and its peripheral structure to eliminate high-frequency noise;

[0029] It also includes a cable fixing sleeve 16 and an RF suppression ring 13; the cable fixing sleeve 16 is used to fix the signal cable 11; the interface pin assembly 10 is connected to the PCB motherboard 4 and is used to ground all shielded components uniformly.

[0030] Among them, a grounding pin 3 is provided on the lower right side of the PCB motherboard 4.

[0031] Among them, the high-speed data transmission chip 7 is installed on the upper right side of the interference filter chip 6.

[0032] The PCB motherboard 4 is supported by the support substrate 8.

[0033] The right side of the signal cable 11 is connected to the signal lead group 9.

[0034] The high-speed data transmission chip 7 has an eARC signal transmission module 15 located on its lower right side.

[0035] The working principle and usage process of this utility model: This utility model realizes the eARC audio return function through structural optimization. Its core principle lies in the organic combination of high-speed signal transmission, signal integrity control and anti-interference capability.

[0036] During operation, when the HDMI connector pin assembly 1 is inserted into the HDMI output interface of an audio signal source (such as a television), the plug terminal group and the signal pin array become conductive, and the signal is transmitted into the connector along the signal cable group. The signal cable 11 is covered by a conductive layer and treated by an RF suppression coil 13 to effectively filter electromagnetic interference;

[0037] The signal first arrives at PCB motherboard 4, on which a high-speed data transmission chip 7 and an eARC control module 5 are arranged. The eARC control module 5 manages and initializes the audio return channel according to the HDMI 2.1 protocol, and works in conjunction with the high-speed data chip 7 to achieve lossless audio format transmission, such as Dolby Atmos or DTS-HD Master Audio.

[0038] One side of the PCB motherboard 4 connects to the HDMI port assembly. The internal pins of this port are soldered to the motherboard via an interface pin assembly. The other end is for connecting external audio equipment such as speakers and amplifiers. Data is output through this port to complete high-fidelity audio transmission.

[0039] The entire motherboard is encased in a metal shielding cover 12, which, combined with an EMI shielding layer 14 and an anti-interference filter chip 6, forms a multi-layer shielding structure that effectively isolates external electromagnetic interference and ensures stable signal transmission. Grounding vias are provided between the layers of the PCB motherboard 4, connecting it to the entire system via grounding pins 3 to prevent signal floating or voltage drift. Furthermore, the signal cable 11 exits through a cable fixing sleeve 16 to prevent loosening of the internal structure due to plugging / unplugging or vibration. This structure can be widely used in smart TVs, home theaters, projection systems, and other fields, offering advantages such as reliable connection, stable signal transmission, and strong anti-interference capabilities.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An eARC audio return connector based on the HDMI 2.1 standard, comprising a connector housing, an HDMI port pin assembly (1), an interface pin assembly (10), a signal lead bus (9), a PCB motherboard (4), an eARC control module (5), and a signal cable (11), characterized in that: The HDMI port pin assembly (1) is enclosed by the HDMI port housing (2). An interface pin assembly (10) is provided on the left side of the HDMI port pin assembly (1). An eARC control module (5) is integrated on the upper end of the PCB motherboard (4). The signal cable (11) is connected to the other end of the PCB motherboard (4). The PCB motherboard (4) is covered with a metal shield (12), and the metal shield (12) is grounded for electromagnetic interference shielding. The eARC control module (5) works in conjunction with the high-speed data transmission chip (7) to complete the signal encoding, decoding and transmission of audio return; The HDMI port pin assembly (1) is provided with an interface pin assembly (10), which is connected to the PCB motherboard by soldering or crimping. It also includes an anti-interference filter chip (6) and an EMI shielding layer (14), which are respectively disposed on the PCB motherboard (4) and its peripheral structure to eliminate high-frequency noise; It also includes a cable fixing sleeve (16) and an RF suppression ring (13); the cable fixing sleeve (16) is used to fix the signal cable (11); the interface pin assembly (10) is connected to the PCB motherboard (4) and is used to ground all shielded components uniformly.

2. The eARC audio return connector based on the HDMI 2.1 standard according to claim 1, characterized in that: A grounding pin (3) is provided on the lower right side of the PCB motherboard (4).

3. The eARC audio return connector based on the HDMI 2.1 standard according to claim 1, characterized in that: A high-speed data transmission chip (7) is installed on the upper right side of the interference filter chip (6).

4. The eARC audio return connector based on the HDMI 2.1 standard according to claim 1, characterized in that: The PCB motherboard (4) is supported by a support substrate (8).

5. The eARC audio return connector based on the HDMI 2.1 standard according to claim 1, characterized in that: The right side of the signal cable (11) is connected to a signal lead array (9).

6. The eARC audio return connector based on the HDMI 2.1 standard according to claim 1, characterized in that: The high-speed data transmission chip (7) has an eARC signal transmission module (15) on its lower right side.

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