Dual-port optical fiber extender

Abstract

The utility model provides a dual-port optical fiber extender, which relates to the technical field of optical fiber extenders, and comprises an optical fiber extender, the optical fiber extender comprises a transmitter and a receiver, the transmitter can transmit HDMI or DP signals to the receiver through optical fibers, the receiver can receive the signals transmitted by the optical fibers and output the HDMI or DP signals, and the receiver can receive the HDMI or DP signals and output the HDMI or DP signals. The optical fiber extender supports direct transmission and mutual conversion of HDMI and DP, the optical fiber extender supports highest 4K-at-60 high-definition transparent transmission, the optical fiber extender supports EDID transparent transmission, DDC transparent transmission and AUX transparent transmission, the transmitter and the receiver support USB 2.0 interface equipment, the receiver supports remote startup and shutdown, each of the transmitter and the receiver comprises a metal shell, each of the transmitter and the receiver comprises an MCU for signal processing, and the MCU is connected with the optical fiber extender. Each of the transmitter and the receiver comprises a CWDM photoelectric conversion module for signal transmission, and each of the transmitter and the receiver comprises a circuit for signal equalization and retiming.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber extender technology, and in particular to a dual-port optical fiber extender. Background Technology

[0002] HDMI and DP are the two mainstream high-definition digital display interfaces. HDMI focuses on TV display input, while DP focuses on monitor connection. They are widely used in consumer electronics and computer monitors. They have significant differences in function, performance and use. They each have their own characteristics and are suitable for different use scenarios. HDMI is widely used in home audio-visual equipment, while DP is important in computers and high-performance monitors. HDMI has evolved from 1.0 to 2.1, supporting 8K / 120Hz. DP 1.2 has a bandwidth of up to 21.6Gbit / s, surpassing HDMI 2.0. DP 1.4 supports 8K.

[0003] In existing technologies, traditional HDMI and DP signal extenders typically have limitations. They often only support a single type of signal transmission and lack direct transmission and conversion capabilities between HDMI and DP. This limits their compatibility and flexibility across different devices. Furthermore, these devices may experience latency, signal attenuation, or image quality degradation when processing high-resolution signals such as 4K@60Hz, affecting the user experience. Moreover, they usually do not support EDID pass-through and DDC / AUX pass-through, which can lead to signal integrity loss and affect display quality. Most traditional devices also do not support USB 2.0 interface devices and lack remote power-on / off functionality, making device operation and control inconvenient. In addition, the casing design of these devices often lacks good heat dissipation and anti-interference capabilities. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dual-port fiber optic extender.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a dual-port fiber optic extender, comprising a fiber optic extender, the fiber optic extender including a transmitter and a receiver, the transmitter being able to transmit HDMI or DP signals to the receiver via fiber optic cable, the receiver being able to receive the signals transmitted via fiber optic cable and output HDMI or DP signals, the fiber optic extender supporting direct transmission and mutual conversion of HDMI and DP, the fiber optic extender supporting up to 4K@60 high-definition pass-through, the fiber optic extender supporting EDID pass-through, DDC pass-through, and AUX pass-through, both the transmitter and receiver supporting USB 2.0 interface devices, the receiver supporting remote power on / off, and both the transmitter and receiver containing a metal casing.

[0006] Preferably, both the transmitter and receiver include an MCU for signal processing, a CWDM photoelectric conversion module for signal transmission, and circuitry for signal equalization and retiming. In the prior art, although the transmitter and receiver integrate a microcontroller unit (MCU) for signal processing, a CWDM photoelectric conversion module for signal transmission, and circuitry for signal equalization and retiming, they still face several drawbacks. These drawbacks include complex system design, high cost, increased overall power consumption and signal delay, compatibility issues affecting the collaborative operation of different components, the risk of single-point failure leading to system failure, and high integration making maintenance and upgrades difficult, thus reducing system flexibility and adaptability to rapidly evolving technological environments. To address these issues, this invention employs a signal equalization and retiming circuit design. The transmitter utilizes its built-in... The MCU (Microcontroller Unit) processes HDMI or DP signals, then uses a CWDM (Coarse Wavelength Division Multiplexing) optoelectronic conversion module to convert the electrical signals into optical signals, which are transmitted to the receiver via optical fiber. The receiver's CWDM optoelectronic conversion module converts the optical signals back into electrical signals, which are then processed by the MCU, including equalization and retiming, to ensure signal integrity and accuracy. This enables the transmitter and receiver to support long-distance transmission of high-definition signals while maintaining high definition and low latency. It also enables direct transmission and mutual conversion of HDMI and DP signals, as well as EDID, DDC, and AUX pass-through, ensuring the stability and reliability of the signal during transmission.

[0007] Preferably, both the transmitter and receiver support HDMI 2.0 and DP 1.2 input and output, both the transmitter and receiver support automatic detection of DP or HDMI input, and both the transmitter and receiver support single-mode and multi-mode fiber optic transmission. In existing technologies, insufficient signal transmission compatibility, lack of automatic detection functions, and limited support for fiber optic transmission mean that current devices often cannot effectively handle different types of input signals, requiring users to manually adjust settings when switching devices. Furthermore, insufficient support for single-mode and multi-mode fiber optic transmission limits system performance under long-distance transmission and high-bandwidth requirements. These deficiencies affect system flexibility, reliability, and user experience. To address these issues, this invention employs an automatic DP / HDMI input detection design. The transmitter first performs photoelectric conversion on the HDMI or DP signal, transmitting it through fiber optic cable to the receiver. The receiver then converts the optical signal back into an electrical signal, decodes it, and outputs it, achieving long-distance, lossless transmission of high-definition video signals. This ensures compatibility with modern high-definition video sources and display devices. The automatic DP / HDMI input detection function enables the device to intelligently identify and adapt to different signal sources, improving user convenience. Simultaneously, the transmitter and receiver support for single-mode and multi-mode fiber optic transmission provides longer-distance and more diverse transmission options suitable for different installation environments and application scenarios, ensuring the stability and reliability of signals during long-distance transmission.

[0008] Preferably, both the transmitter and receiver support two independent balanced audio transmissions, independent audio pass-through, and embedding / de-embedding functions. This support for two independent balanced audio transmissions, as well as independent audio pass-through and embedding / de-embedding functions, means the device can process and transmit two independent audio signals separately, maintaining the integrity and quality of the audio signals. This design allows users to enjoy a high-fidelity audio experience while transmitting video signals, whether in home theater systems or professional audio applications. Furthermore, the audio embedding / de-embedding function provides greater flexibility, allowing users to choose to transmit audio signals along with video signals or separately as needed.

[0009] Preferably, both the transmitter and receiver include built-in ESD (electrostatic discharge) protection circuitry. The built-in ESD protection circuitry in the transmitter and receiver is crucial, effectively preventing circuit damage caused by electrostatic discharge during equipment operation or environmental changes. The ESD protection circuitry ensures that the equipment can safely guide and release electrostatic energy when faced with an electrostatic discharge event, thereby protecting sensitive internal electronic components from damage and maintaining the stability and reliability of the equipment.

[0010] Preferably, both the transmitter and receiver support the extension of USB and Ethernet signals. This design enables the long-distance transmission of USB devices (such as keyboards, mice, printers, etc.) and Ethernet (network) signals along with HDMI or DP video signals via fiber optic cable. This means that users can use USB devices remotely from the host while maintaining a network connection, without needing to connect directly to the host. This provides great convenience for applications requiring remote operation and control.

[0011] Preferably, both the transmitter and receiver support plug-and-play functionality without the need for additional driver installation. This feature greatly enhances user convenience, meaning users can directly connect the device to a computer or other video source without complex configuration or additional software installation, thus saving installation time and avoiding compatibility issues.

[0012] Beneficial effects:

[0013] 1. Existing technologies typically have limitations, often supporting only a single type of signal transmission and lacking direct transmission and conversion capabilities between HDMI and DP. This restricts their compatibility and flexibility across different devices. Furthermore, these devices may experience latency, signal attenuation, or image quality degradation when processing high-resolution signals such as 4K@60Hz, impacting user experience. They also generally do not support EDID pass-through and DDC / AUX pass-through, leading to signal integrity loss and affecting display quality. Most traditional devices also do not support USB. 2.0 interface devices often lack remote power-on / off functionality, making operation and control inconvenient. Furthermore, their casings often lack adequate heat dissipation and interference resistance. To address these issues, this invention employs a dual-port input / output fiber optic extender, supporting direct transmission and conversion between HDMI and DP signals. This improves compatibility and flexibility between different devices and maintains high-resolution 4K@60Hz signals over long distances, avoiding signal delay, attenuation, and image quality degradation, thus significantly enhancing the user experience. In addition, the device supports EDID and DDC / AUX pass-through, ensuring signal integrity and display quality. It also features a USB 2.0 interface supporting remote power-on / off functionality, further simplifying operation and control. The metal casing provides excellent heat dissipation and interference resistance, ensuring stable operation and long-term reliability.

[0014] 2. In existing technologies, although transmitters and receivers integrate microcontroller units (MCUs) for signal processing, CWDM photoelectric conversion modules for signal transmission, and circuits for signal equalization and retiming, they still face several drawbacks. These drawbacks include complex system design, high cost, increased overall power consumption and signal delay, compatibility issues, and impact on the collaborative operation of different components. Furthermore, the risk of a single point of failure can lead to the failure of the entire system, and the high integration makes maintenance and upgrades difficult, thereby reducing the system's flexibility and ability to adapt to rapidly evolving technological environments. To address these issues, this invention employs a signal equalization and retiming circuit design to enable transmitters and receivers to support long-distance transmission of high-definition signals while maintaining high signal clarity and low latency. It also enables direct transmission and mutual conversion of HDMI and DP signals, as well as EDID pass-through and DDC / AUX pass-through, ensuring the stability and reliability of signals during transmission.

[0015] 3. Existing technologies suffer from insufficient signal transmission compatibility, lack of automatic detection functions, and limited support for fiber optic transmission. Existing devices often cannot effectively handle different types of input signals, requiring users to manually adjust settings when switching devices. Furthermore, insufficient support for single-mode and multi-mode fiber optic transmission limits the system's performance under long-distance transmission and high-bandwidth requirements. These deficiencies affect the system's flexibility, reliability, and user experience. To address these issues, this invention adopts an automatic DP / HDMI input detection design, ensuring compatibility with modern high-definition video sources and display devices. The automatic DP / HDMI input detection function enables the device to intelligently identify and adapt to different signal sources, improving user convenience. Simultaneously, the transmitter and receiver support single-mode and multi-mode fiber optic transmission, providing longer-distance and more diverse transmission options suitable for different installation environments and application scenarios, ensuring the stability and reliability of signals during long-distance transmission. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the direct transmission and mutual conversion of the fiber optic extender of this utility model;

[0017] Figure 2 This is a schematic diagram of the transmission principle of the fiber optic extender of this utility model;

[0018] Figure 3 This is a schematic diagram of the receiving principle of the fiber optic extender of this utility model;

[0019] Figure 4 This is a schematic diagram of the corresponding wiring during the testing of this utility model;

[0020] Figure 5These are front and rear views of the extender transmitter of this utility model.

[0021] Figure 6 These are front and rear view schematic diagrams of the extender receiver of this utility model. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific implementation examples:

[0025] Reference Figure 1-6This is a dual-port fiber optic extender, comprising a transmitter and a receiver. The transmitter transmits HDMI or DP signals via fiber optic cable to the receiver, which receives the transmitted signal and outputs an HDMI or DP signal. The extender supports direct transmission and conversion between HDMI and DP, supports up to 4K@60Hz high-definition pass-through, and supports EDID, DDC, and AUX pass-through. Both the transmitter and receiver support USB 2.0 interface devices, and the receiver supports remote power on / off. Both the transmitter and receiver are encased in a metal housing. Existing technology typically has limitations, often supporting only a single type of signal transmission and lacking direct transmission and conversion capabilities between HDMI and DP. This limits their compatibility and flexibility across different devices. Furthermore, these devices may experience latency, signal attenuation, or image quality degradation when processing high-resolution signals such as 4K@60Hz, impacting user experience. Moreover, they typically do not support EDID and DDC / AUX pass-through, leading to signal integrity loss and affecting display quality. Most traditional devices also do not support USB. Traditional USB 2.0 interface devices lack remote power-on / off functionality, making operation and control inconvenient. Furthermore, their casings often lack adequate heat dissipation and interference resistance. To address these issues, this invention employs a dual-port input / output fiber optic extender. The transmitter first receives high-definition video and audio signals from HDMI or DP source devices, then transmits these signals to the receiver via fiber optic cable. During this process, the transmitter utilizes its built-in HDMI / DP converter and fiber optic transmission technology to support direct transmission and mutual conversion of HDMI and DP signals, ensuring that the signal maintains a maximum high-definition quality of 4K@60Hz and zero-latency real-time transmission over long distances. Simultaneously, the transmitter and receiver utilize EDID and DDC / AUX pass-through technologies to guarantee signal integrity and device compatibility. In addition, both the transmitter and receiver are equipped with USB 2.0 interfaces, supporting the connection of various USB devices. The receiver also features remote power-on / off functionality, increasing operational convenience. The entire system's metal casing design provides excellent heat dissipation and strong interference resistance, ensuring stable operation of the device in various environments.

[0026] Both the transmitter and receiver include an MCU for signal processing, a CWDM optoelectronic conversion module for signal transmission, and circuitry for signal equalization and retiming. In existing technologies, although transmitters and receivers integrate a microcontroller unit (MCU) for signal processing, a CWDM (coarse wavelength division multiplexing) optoelectronic conversion module for signal transmission, and circuitry for signal equalization and retiming, they still face several drawbacks. These drawbacks include complex system design, high cost, increased overall power consumption and signal delay, compatibility issues affecting the collaborative operation of different components, the risk of single-point failure leading to system failure, and high integration making maintenance and upgrades difficult, thereby reducing system flexibility and adaptability to rapidly evolving technological environments. To address these issues, this invention employs a signal equalization and retiming circuit design. The transmitter processes HDMI or DP signals through its built-in MCU, then uses a CWDM optoelectronic conversion module to convert the electrical signal into an optical signal, which is transmitted to the receiver via optical fiber. The receiver's CWDM optoelectronic conversion module converts the optical signal back into an electrical signal, which is then processed by the MCU, including equalization and retiming, to ensure signal integrity and accuracy.

[0027] Both the transmitter and receiver support HDMI 2.0 and DP 1.2 input and output, and both support automatic detection of DP or HDMI input. Both also support single-mode and multi-mode fiber optic transmission. Existing technologies suffer from insufficient signal transmission compatibility, lack of automatic detection functionality, and limited support for fiber optic transmission. Existing devices often cannot effectively handle different types of input signals, requiring users to manually adjust settings when switching devices. Furthermore, insufficient support for single-mode and multi-mode fiber optic transmission limits the system's performance under long-distance transmission and high-bandwidth requirements. These shortcomings affect the system's flexibility, reliability, and user experience. To address these issues, this invention employs an automatic DP / HDMI input detection design. The transmitter first performs photoelectric conversion on the HDMI or DP signal, transmits it through fiber optic cable to the receiver, and the receiver then converts the optical signal back into an electrical signal, decodes it, and outputs it, achieving long-distance, lossless transmission of high-definition video signals.

[0028] Both the transmitter and receiver support two independent balanced audio transmissions, independent audio pass-through, and embedding / de-embedding functions. This means the device can process and transmit two independent audio signals separately, maintaining the integrity and quality of the audio signals. This design allows users to enjoy a high-fidelity audio experience while transmitting video signals, whether in home theater systems or professional audio applications. Furthermore, the audio embedding / de-embedding function provides greater flexibility, allowing users to choose to transmit audio signals along with video signals or separately as needed. Both the transmitter and receiver include built-in ESD protection circuitry. This built-in ESD protection circuitry is crucial, effectively preventing circuit damage caused by electrostatic discharge during device operation or environmental changes. The ESD protection circuitry ensures the device's stability and performance. In the event of electrostatic discharge (ESD) events, it can safely guide and release electrostatic energy, thereby protecting sensitive internal electronic components from damage and maintaining the stability and reliability of the device. Both the transmitter and receiver support the extension of USB and Ethernet signals. This design enables the long-distance transmission of USB devices (such as keyboards, mice, printers, etc.) and Ethernet (network) signals along with HDMI or DP video signals via fiber optics. This means that users can use USB devices remotely from the host while maintaining a network connection, without needing to connect directly to the host. This provides great convenience for applications requiring remote operation and control. Both the transmitter and receiver support plug-and-play functionality without the need for additional driver installation. This feature greatly enhances user convenience. The plug-and-play function means that users can directly connect the device to a computer or other video source without complex configuration or the installation of additional software, thus saving installation time and avoiding compatibility issues.

[0029] The working principle of this invention is as follows: The transmitter first receives high-definition video and audio signals from HDMI or DP source devices, and then transmits these signals to the receiver via optical fiber. During this process, the transmitter utilizes its built-in HDMI / DP converter and optical fiber transmission technology to support direct transmission and mutual conversion of HDMI and DP signals, ensuring that the signal maintains a maximum high-definition quality of 4K@60Hz and latency-free real-time performance during long-distance transmission. Simultaneously, the transmitter and receiver ensure signal integrity and device compatibility through EDID pass-through, DDC pass-through, and AUX pass-through technologies. Furthermore, both the transmitter and receiver are equipped with USB... The 2.0 interface supports the connection of various USB devices. The receiver also has a remote power on / off function, which increases the convenience of operation. The metal casing design of the entire system provides good heat dissipation and strong anti-interference capabilities, ensuring stable operation of the device in various environments. The transmitter processes HDMI or DP signals through its built-in MCU (Microcontroller Unit), and then uses a CWDM (Coarse Wavelength Division Multiplexing) optoelectronic conversion module to convert electrical signals into optical signals, which are transmitted to the receiver through optical fiber. The CWDM optoelectronic conversion module at the receiver end converts the optical signals back into electrical signals, and then the MCU performs signal processing, including equalization and retiming, to ensure signal integrity and accuracy. The transmitter first performs optoelectronic conversion on HDMI or DP signals and transmits them to the receiver through optical fiber. The receiver then converts the optical signals back into electrical signals, decodes and outputs them, realizing long-distance, lossless transmission of high-definition video signals.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dual-port fiber optic extender, comprising a fiber optic extender, characterized in that: The fiber optic extender includes a transmitter and a receiver. The transmitter can transmit HDMI or DP signals to the receiver via fiber optic cable. The receiver can receive the signals transmitted via fiber optic cable and output HDMI or DP signals. The fiber optic extender supports direct transmission and mutual conversion between HDMI and DP. The fiber optic extender supports up to 4K@60 high-definition pass-through. The fiber optic extender supports EDID pass-through, DDC pass-through, and AUX pass-through. Both the transmitter and receiver support USB 2.0 interface devices. The receiver supports remote power on / off. Both the transmitter and receiver are encased in a metal housing.

2. The dual-port fiber optic extender according to claim 1, characterized in that: Both the transmitter and receiver include an MCU for signal processing, a CWDM photoelectric conversion module for signal transmission, and circuitry for signal equalization and retiming.

3. The dual-port fiber optic extender according to claim 1, characterized in that: Both the transmitter and receiver support HDMI 2.0 and DP 1.2 input and output, both the transmitter and receiver support automatic detection of DP or HDMI input, and both the transmitter and receiver support single-mode and multi-mode fiber optic transmission.

4. The dual-port fiber optic extender according to claim 1, characterized in that: Both the transmitter and receiver support two independent balanced audio transmissions, both the transmitter and receiver support independent audio pass-through, and both the transmitter and receiver support embedding and de-embedding functions.

5. The dual-port fiber optic extender according to claim 1, characterized in that: Both the transmitter and receiver include built-in ESD electrostatic protection circuitry.

6. The dual-port fiber optic extender according to claim 1, characterized in that: Both the transmitter and receiver support the extension of USB and Ethernet signals.

7. The dual-port fiber optic extender according to claim 1, characterized in that: Both the transmitter and receiver support plug-and-play functionality without the need for additional driver installation.

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