Decoder based on wired network

Abstract

The utility model discloses a decoder based on a wired network, which comprises a shell and circuit boards arranged in the shell, the shell is provided with a plurality of holes, so that parts connected with the plurality of circuit boards are exposed and protrude out of the surface of the shell or are flush with the surface of the shell, and the circuit boards are respectively connected with a network interface and a signal output interface. The circuit board is provided with a decoding processor and a wired network processor, the decoding processor is connected with the wired network processor, the wired network processor is connected with an external network through a network interface, a video signal source sends a video source signal to the decoding processor through a network interface, and the decoding processor sends a decoding signal to external equipment through a signal output interface. The utility model provides a decoder based on a wired network, which avoids the quality problem of signal transmission by using an HDMI (High Definition Multimedia Interface) cable, changes a signal transmission mode into a wired network transmission mode, and equipment in a local area network can output or receive a plurality of signals through a network cable and restore digital signals into digital uncompressed high-definition output.

Description

Technical Field

[0001] This utility model relates to the field of decoder technology, and more specifically, to a decoder based on a wired network. Background Technology

[0002] When HDMI audio and video signals are transmitted over long distances, image quality is severely affected as the transmission distance increases. Images may become blurry, shifted, or flickering, while audio signals may experience delays or interruptions. This phenomenon is particularly pronounced in large venues, where the distance between the stage and the audience seating may reach tens or even hundreds of meters. In such cases, the transmitted HDMI audio and video signals may be lost or delayed, leading to audio-visual asynchrony and affecting the overall performance.

[0003] To address this issue, custom-made cables with specialized processing techniques are typically required to achieve high-quality HDMI audio and video signal transmission. Due to the widespread distribution of equipment in large venues, audio and video signals need to be transmitted from the stage to multiple display terminals and amplification equipment. This necessitates precise cable length measurements and complex on-site installation, including cable laying and connector installation. In practice, stage setup and equipment placement may need to be adjusted as needed for the performance. For example, changes in equipment location or stage layout require rewiring. Once installed, custom-made long-distance cables are difficult to adjust to on-site requirements, significantly limiting the flexibility of stage setup and enhancing the performance effect. This also increases construction costs and may lead to delays in the entire performance schedule. Summary of the Invention

[0004] To address the issues caused by the long transmission distance of HDMI cables, this invention provides a decoder based on a wired network. This avoids the signal quality problems associated with HDMI cable transmission by changing the signal transmission method to wired network transmission. Devices within the local area network can output or receive multiple signals via network cable, restoring digital signals to uncompressed high-definition output. The network cables used are also easier to procure and install, simplifying the wiring work for operators and improving production efficiency.

[0005] The technical solution of this utility model is as follows:

[0006] A wired network-based decoder includes a housing and a circuit board built into the housing. The housing has multiple holes, allowing components connected to the multiple circuit boards to be exposed and protrude from or flush with the housing surface.

[0007] The circuit board is connected to the network interface and the signal output interface, respectively.

[0008] The circuit board is equipped with a decoding processor and a wired network processor, which are connected together.

[0009] The wired network processor connects to an external network via a network interface.

[0010] The video signal source sends the video source signal to the decoding processor via the network interface, and the decoding processor sends the decoding signal to the external device through the signal output interface.

[0011] In the aforementioned wired network-based decoder, the circuit board is also connected to a power button and a DC power interface, which are exposed and protrude from the surface of the housing.

[0012] Furthermore, the DC power interface connects to a 12V DC power supply.

[0013] The aforementioned decoder, based on a wired network, has its circuit board connected to the display screen.

[0014] The aforementioned wired network-based decoder has a circuit board connected to control keys, which include an confirmation key, an up arrow key, and a down arrow key. The control keys are exposed and protrude from the surface of the housing.

[0015] The aforementioned wired network-based decoder has a circuit board connected to a USB interface, which consists of two USB Type A ports.

[0016] The aforementioned decoder based on a wired network has a PoE LAN network interface and a LAN network interface.

[0017] The aforementioned wired network-based decoder has signal output interfaces including an HDMI output interface and an SDI output interface.

[0018] The aforementioned wired network-based decoder has its circuit board connected to external audio devices via a headphone jack.

[0019] The aforementioned wired network-based decoder has anti-slip blocks installed at the four corners of the bottom surface of the housing.

[0020] The aforementioned wired network-based decoder has multiple heat dissipation holes on both sides of its housing.

[0021] Furthermore, a cooling fan is installed inside the casing, with the air inlet of the cooling fan close to the decoding processor and the air outlet of the cooling fan facing and close to the heat dissipation holes.

[0022] Furthermore, the housing includes a bottom shell and a top cover. The bottom shell is a hexahedral structure with an open top surface. The center of both sides of the bottom shell is hollowed out. Multiple heat dissipation holes are provided on both sides of the top cover, and the heat dissipation holes are aligned with the hollowed-out center of both sides of the bottom shell.

[0023] Furthermore, the heat dissipation holes are multiple inclined elongated oval structures. The heat dissipation holes consist of two types of structures: one is a long elongated oval structure, and the other is two short elongated oval structures. The heat dissipation holes of the two types are arranged alternately side by side.

[0024] According to the above-described solution, the beneficial effects of this utility model are as follows: This utility model provides a decoder based on a wired network, which avoids the quality problems of transmitting signals using HDMI cables. By changing the signal transmission method to wired network transmission, devices within the local area network can output or receive multiple signals through the network cable, restoring digital signals to uncompressed high-definition digital output. The transmission network cables used are also easier to purchase and install, simplifying the wiring work for operators and improving production efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0027] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0028] Figure 3 This is a schematic diagram of the working components and process of this utility model.

[0029] The following are the labeling elements in the figure:

[0030] 1. Housing; 2. Headphone jack; 3. USB Type A port; 4. USB Type C port; 5. Display; 6. Up arrow key; 7. OK button; 8. Down arrow key; 9. Ventilation vents; 10. Power button; 11. DC power interface; 12. HDMI output interface; 13. PoE LAN network interface; 14. LAN network interface; 15. SDI output interface. Detailed Implementation

[0031] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0032] A decoder based on a wired network includes a housing 1 and a circuit board built into the housing. The housing has multiple holes, allowing components connected to the multiple circuit boards to be exposed and protruding from or flush with the housing surface. The circuit boards are connected to a network interface and a signal output interface, respectively. The circuit boards are equipped with a decoding processor and a wired network processor. The decoding processor is connected to the wired network processor. The wired network processor is connected to an external network through the network interface. A video signal source sends a video source signal to the decoding processor through the network interface. The decoding processor sends a decoded signal to an external device through the signal output interface.

[0033] like Figure 1 , Figure 2 As shown, the decoder features a headphone jack (2), USB ports (USB Type-C port 4 and USB Type-A port 3), a display screen (5), an OK button (7), up and down arrow keys (9), a ventilation hole (9), a power button (10), a DC power port (11), a PoE LAN network port (13), a LAN network port (14), an HDMI output port (12), and an SDI output port (15). The headphone jack, USB port, display screen, PoE LAN network port, LAN network port, and HDMI output port are all exposed and flush with the surface of the casing, while the control buttons, power button, DC power port, and SDI output port are exposed and protrude from the surface of the casing.

[0034] like Figure 1 As shown, on the front of the decoder's casing, from left to right, are: headphone jack 2, USB port (USB Type A port 3 on the left, USB Type C port 4 on the right), display screen 5, and control buttons (from top to bottom: up arrow button 6, confirmation button 7, and down arrow button 8). Figure 2 As shown, on the back of the decoder housing, from left to right, are the power button 10, DC power interface 11, HDMI output interface 12, PoE LAN network interface 13, LAN network interface 14, and SDI output interface 15.

[0035] like Figure 1 , Figure 2As shown, multiple heat dissipation holes 9 are provided on both sides of the housing. A cooling fan is installed inside the housing, with its air inlet close to the decoding processor and its air outlet facing and close to the heat dissipation holes. During manufacturing, the housing includes a bottom shell and a top cover. The bottom shell is a hexahedral structure with an open top surface. The center of each side of the bottom shell is hollowed out. Multiple heat dissipation holes are provided on both sides of the top cover, aligned with the hollowed-out areas on the center of the bottom shell's sides. This results in a single-layer, thin structure on the actual sides of the housing, which facilitates heat dissipation while still making the heat dissipation holes visible. The heat dissipation holes are multiple inclined elongated oval structures, comprising two types: one long elongated oval structure and the other two short elongated oval structures. These two types of holes are arranged alternately side-by-side. The length / height of the two types of holes are equal in the longitudinal direction. At the ends, if two short elongated oval structures are used, the upper or lower portion will be subtracted.

[0036] The circuit board is connected to the power button and DC power interface, which are exposed and protrude from the housing surface. The DC power interface connects to a 12V DC power supply. The 12V DC power interface is compatible with industry standard power supply systems. Furthermore, this decoder uses DC power as its primary energy source, simplifying the power filter circuit design and improving energy efficiency.

[0037] The circuit board is connected to the display screen and control keys, which include an OK button, an up arrow key, and a down arrow key. The control keys are exposed and protrude from the surface of the housing. The display screen provides users with visual operation and can show the operating status and configuration interface of the codec processor, provide a real-time system diagnostic interface, support dynamic parameter adjustment, and lower the threshold for professional operation and maintenance.

[0038] The circuit board connects to a USB interface, which includes both USB Type-C and USB Type-A ports. This invention features both USB Type-C and USB Type-A ports, ensuring compatibility with both new and old devices and supporting simultaneous connection to both control terminals and storage devices.

[0039] The network interfaces include a PoE LAN interface and a standard LAN interface. The PoE LAN interface transmits power and data simultaneously via twisted-pair cable, making it particularly suitable for scenarios requiring simplified cabling, such as networking codec processors in mobile broadcast vans. PoE power supply avoids the space occupied by multiple device power adapters, meeting rapid deployment needs. The standard LAN interface, on the other hand, focuses on pure data transmission performance and is suitable for high-density video streaming in fixed spaces such as control rooms.

[0040] The signal output interfaces include HDMI and SDI output interfaces. After decoding the signal received from the network, the signal is transmitted to external audio and video devices via the HDMI and SDI output interfaces.

[0041] The circuit board connects to external audio devices via a headphone jack.

[0042] Anti-slip blocks are installed at the four corners of the bottom surface of the housing. The silicone pads at the four corners of the bottom of the housing provide equipment-level shock resistance, making it suitable for vibration environments such as mobile broadcasting vehicles.

[0043] like Figure 3 As shown, the signal originates from the network video source and is transmitted via HTTP protocol using network transmission protocols such as NDI (Network Device Interface), SRT (Secure Reliable Transport), RTMP (Real-Time Messaging Protocol, RTMP is based on TCP protocol and is commonly used for live streaming), RTSP (Real-Time Streaming Protocol), HLS (HTTP Live Streaming), TS - UDP (Transport Stream over User Datagram Protocol, commonly used in broadcasting), etc., to reach the decoding processor.

[0044] After receiving the video source signal, the decoding processor uses a protocol parser to identify the transmission protocol carried by the video source signal. The protocol parser analyzes the feature fields in the signal packet header and compares them with a preset protocol feature library to determine the protocol to which the video source signal belongs. Once confirmed, the video source signal is allowed to proceed to the next processing step.

[0045] The decoding processor uses demultiplexing technology to extract encoded information from the identified video source signal. Based on the protocol content of the video source signal, the decoding processor separates different types of encoded data (such as video, audio, and subtitles). For video encoded data, the decoding processor uses an algorithm to restore the compressed bitstream to quantization coefficients, then performs inverse quantization, restoring the quantization coefficients to transform coefficients according to the quantization table used during encoding, and finally performs inverse discrete cosine transform (IDCT) to convert the transform coefficients back to pixel values. For audio encoded data, the algorithm restores the compressed audio data to audio samples of the corresponding format. The decoded original video data uses frame synchronization technology to sort the video frames, comparing timestamps to ensure the video frames are arranged in the correct order, avoiding stuttering or misalignment. For audio samples, audio mixing technology is used. If there are multiple audio inputs, the mixer mixes these audio signals according to a certain volume ratio and channel allocation to ensure the integrity and accuracy of the audio output.

[0046] The processed encoded data is converted into mainstream high-definition digital signal interface formats such as HDMI and SDI using a digital-to-analog converter (DAC) and a signal encoder. The HDMI output interface and the SDI output interface realize signal output, and through high-quality video transmission, the image and sound are finally presented on the screen.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A decoder based on a wired network, characterized in that, It includes a housing and a circuit board built into the housing. The housing has multiple holes, allowing components connected to the multiple circuit boards to be exposed and protrude from or flush with the surface of the housing. The circuit board is connected to the network interface and the signal output interface, respectively. The circuit board is equipped with a decoding processor and a wired network processor, which are connected together. The wired network processor connects to an external network via a network interface, which is either a PoE LAN network interface or a LAN network interface. The video signal source sends the video source signal to the decoding processor via the network interface, and the decoding processor sends the decoding signal to the external device through the signal output interface; Multiple heat dissipation holes are provided on both sides of the casing; A cooling fan is installed inside the casing. The air inlet of the cooling fan is close to the decoding processor, and the air outlet of the cooling fan faces and is close to the heat dissipation holes. The casing includes a bottom shell and a top cover. The bottom shell is a hexahedral structure with an open top surface. The middle of the two sides of the bottom shell is hollowed out. The two sides of the top cover are provided with multiple heat dissipation holes, which are aligned with the hollowed-out middle of the two sides of the bottom shell.

2. The decoder based on a wired network according to claim 1, characterized in that, The circuit board is also connected to the power button and DC power interface, which are exposed and protrude from the surface of the housing.

3. A decoder based on a wired network according to claim 2, characterized in that, The DC power interface connects to a 12V DC power supply.

4. A decoder based on a wired network according to claim 1, characterized in that, The circuit board is connected to the display screen.

5. A decoder based on a wired network according to claim 1, characterized in that, The circuit board is connected to the control keys, which include an OK key, an up arrow key, and a down arrow key. The control keys are exposed and protrude from the surface of the housing.

6. A decoder based on a wired network according to claim 1, characterized in that, The circuit board is connected to a USB interface, which consists of two USB Type A ports.

7. A decoder based on a wired network according to claim 1, characterized in that, The signal output interfaces include HDMI output interface and SDI output interface.

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