HDMI 2.0 high-definition video optical transceiver

Abstract

The utility model relates to the technical field of optical transceivers, in particular to an HDMI 2.0 high-definition video optical transceiver. The transmitter is used for carrying out regeneration relay and photoelectric conversion on high-definition video signals, audio signals and control signals, the receiver is used for receiving signals transmitted by an optical fiber and recovering the signals into HDMI video signals, audio signals and control signals, and the transmitter and the receiver carry out point-to-point transmission through a single-core optical fiber. According to the HDMI2.0 high-definition video optical transceiver provided by the utility model, the optical fiber transmission technology is adopted, the transmission bandwidth of 18Gbps is supported, the high-quality video effect and the data transmission performance are realized, and diversified requirements and applications of users are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical terminal technical field especially relates to a HDMI2.0 high definition video optical terminal. BACKGROUND

[0002] With the continuous development of digital life, people's demand for high-definition video transmission is getting higher and higher. Whether in multimedia conference, home projector, flat television or education demonstration, HDMI video display equipment is more and more widely selected and used by consumers. However, there are many problems in the transmission of traditional cable when transmitting high-definition video signals, such as limited transmission distance, serious signal attenuation, poor anti-electromagnetic interference ability, etc. These problems seriously affect the stability and quality of high-definition video transmission. Therefore, it is particularly necessary to develop a kind of full digital optical fiber transmission high-definition video transmission equipment.

[0003] At present, HDMI interface is one of the most widely used video interfaces in consumer market and professional AV field. HDMI2.0 standard supports 18Gbps transmission bandwidth, supports 4K (3840x2160) resolution video with maximum 60Hz frame rate. However, the traditional HDMI cable has obvious limitations in transmission distance, and the signal quality is obviously decreased within a distance of tens of meters, and it is almost impossible to use normally after more than 30 meters. In addition, the cable is easily interfered by electromagnetic interference when transmitting high-speed signals, resulting in flickering picture, audio interruption and other problems, which is obviously unacceptable in scenes requiring high stability and high quality.

[0004] The existing HDMI2.0 high-definition video optical terminal still has some deficiencies in actual use, specifically, (1) high complexity: the installation and debugging process of the existing device is relatively complex, which needs to be operated by professional technicians. (2) poor flexibility: the function of the existing device is single, which cannot flexibly cope with various transmission demands. (3) high cost: high-performance optical transmission equipment is usually expensive, which limits its popularization among ordinary users. SUMMARY

[0005] The utility model provides a kind of HDMI2.0 high-definition video optical terminal, by adopting optical fiber transmission technology, support 18Gbps transmission bandwidth, with high-quality video effect and data transmission performance, meet the diversification needs and application of user.

[0006] The technical scheme adopted by the utility model is: a kind of HDMI2.0 high-definition video optical terminal, including the transmitter for regenerating and relaying high-definition video signal, audio signal and control signal and photoelectric conversion and the receiver for receiving optical fiber transmission signal and recovering as HDMI video signal, audio signal and control signal, the transmitter and receiver carry out point-to-point transmission by single-core optical fiber.

[0007] As a further improvement of the utility model, the transmitter and the receiver are both built-in signal equalization, serial clock recovery and line driving circuit, HDMI repeater, Ethernet serial / parallel converter circuit, CWDM optical-electric conversion module, DDC transmission channel, MCU control signal processing and transmission channel detection indication and power module.

[0008] As a further improvement of the utility model, the transmitter and the receiver support bidirectional RS232 communication function, realize intelligent connection with external equipment.

[0009] As a further improvement of the utility model, the transmission between the transmitter and the receiver adopts full digital video uncompressed transmission technology, supports maximum resolution 4096x2160@60Hz, 18Gbps high-speed video bandwidth.

[0010] As a further improvement of the utility model, the optical transceiver supports video internal audio embedding and de-embedding and external input analog audio transmission, audio output frequency range is 32KHz to 192KHz, supports ARC and CEC functions.

[0011] As a further improvement of the utility model, the optical transceiver supports 1-way 3.5 independent analog audio input and output, and simultaneously supports transmitter audio embedding and receiver audio de-embedding functions.

[0012] As a further improvement of the utility model, the optical transceiver supports two-way 10 / 100Mbps Ethernet extension, transmits through RJ45 network port signal, adapts to IEEE802.3 standard, supports full duplex / half duplex working mode.

[0013] As a further improvement of the utility model, the optical transceiver adopts CWDM technology to realize multi-channel signal transmission on a single optical fiber, wavelength is selectable, supports standard single-mode optical fiber transmission distance up to 10KM.

[0014] The utility model has the advantages that (1) the utility model adopts optical fiber transmission technology, completely solves the limitation of traditional HDMI cable in transmission distance, supports long-distance transmission up to 10KM, and ensures that signal quality does not attenuate in long-distance transmission.

[0015] (2) The optical fiber transmission of the utility model has very high anti-electromagnetic interference capability, avoids problems such as signal distortion, picture flicker and audio interruption caused by electromagnetic interference, and improves transmission stability and reliability.

[0016] (3) The utility model supports the transmission of 1 way uncompressed HDMI2.0 video signal, 1 way independent one-way audio or add and remove embedded audio, double -way 10 / 100Mbps Ethernet, RS232 serial port data and other various low -speed service signal, the function is rich, and the application scope is wide.

[0017] (4) The utility model supports the highest resolution 4096x2160@60Hz, 18Gbps high -speed video bandwidth, and the video and audio signal transmission quality is high, ensures that the user is when watching high dynamic range (HDR) content, color is richer, and the detail is clearer.

[0018] (5) Compared with the traditional high -performance HDMI fiber transmission equipment, the utility model can reduce the manufacturing cost of equipment by modular design and optimized hardware configuration while ensuring high performance, so that the high -performance fiber transmission equipment can be accepted and used by more ordinary users. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a signal interface connection schematic drawing of the utility model a kind of HDMI2.0 high-definition video optical terminal;

[0020] Figure 2 It is a transmitter principle block diagram of the utility model a kind of HDMI2.0 high-definition video optical terminal;

[0021] Figure 3 It is a receiver principle block diagram of the utility model a kind of HDMI2.0 high-definition video optical terminal;

[0022] Figure 4 It is the EDID selection encoding switch diagram of the utility model a kind of HDMI2.0 high-definition video optical terminal;

[0023] Figure 5 It is the single -port 10M / 100Mbps high -speed Ethernet optical transmission diagram of the utility model a kind of HDMI2.0 high-definition video optical terminal;

[0024] Figure 6 It is the test link access diagram of the utility model a kind of HDMI2.0 high-definition video optical terminal. DETAILED DESCRIPTION

[0025] In order to make the technical problem to be solved in the application, technical scheme and beneficial effect more clearly, the following is further detailed in the application combining with the drawings and examples. It should be understood that the examples described herein are only used to explain the application, and are not used to limit the application.

[0026] The utility model provides a kind of HDMI2.0 high-definition video optical terminal, including for the high-definition video signal, audio signal and control signal are regenerated and relay and carry out photoelectric conversion transmitter and for receiving the signal of fiber transmission and restore as HDMI video signal, audio signal and control signal receiver, transmitter and receiver carry out point-to-point transmission by single-core optical fiber.

[0027] In the utility model, transmitter and receiver are all built-in signal equalization, serial clock recovery and line driving circuit, HDMI repeater, ethernet serial / deserializer circuit, CWDM photoelectric conversion module, DDC transmission channel, MCU control signal processing and transmission channel detection indication and power module.Transmitter and receiver support bidirectional RS232 communication function, realize and the intelligent connection of external equipment.Transmission between transmitter and receiver adopts full digital video uncompressed transmission technology, supports maximum resolution 4096x2160@60Hz, 18Gbps high-speed video bandwidth.

[0028] In the utility model, optical terminal supports video internal audio embedding and de-embedding and the transmission of external input analog audio, and audio output frequency range is 32KHz to 192KHz, supports ARC and CEC function.Optical terminal supports 1 way 3.5 independent analog audio input and output, and simultaneously supports transmitter audio embedding and receiver audio de-embedding function.Optical terminal supports two-way 10 / 100Mbps Ethernet extension, passes through RJ45 network interface signal transmission, adapts to IEEE802.3 standard, supports full duplex / half duplex mode.Optical terminal uses CWDM technology to realize the transmission of multiple signals on single optical fiber, wavelength can be selected, supports standard single-mode fiber transmission distance reaches 10KM. Embodiment

[0029] The embodiment provides a kind of HDMI2.0 high-definition video optical terminal, specifically as follows.

[0030] (Signal interface

[0031] The HDMI2.0 high-definition video optical terminal of the embodiment includes transmitter and receiver, and the signal interface connection schematic diagram of the two is as Figure 1 Indicated. Transmitter and receiver carry out point-to-point transmission by single-core optical fiber. The main interface of transmitter includes:

[0032] (1) HDMI input interface: for connecting high-definition video source, such as 4K TV, Blu-ray player, etc.

[0033] (2) independent analog audio input interface: support 3.5mm audio input, for the input of external audio signal.

[0034] (3) Ethernet interface: support two 10 / 100Mbps Ethernet expansion, through the RJ45 network interface for signal transmission.

[0035] (4) RS232 serial interface: support bidirectional RS232 communication function, for intelligent connection with external devices.

[0036] The interface of the receiver corresponds to the transmitter, including HDMI output interface, independent analog audio output interface, Ethernet interface and RS232 serial interface. Through these interfaces, the receiver can restore the optical fiber transmission signal to HDMI video, audio signal and control signal, and output to the display device or other terminal device.

[0037] (II) Transmitter principle

[0038] The principle diagram of the transmitter is shown in Figure 2 , mainly including the following modules:

[0039] (1) HDMI signal processing module: responsible for receiving HDMI input signal, and regenerating four parallel high-speed signals (TSMDS1, TSMDS2, TSMDS3, TSMDS_CLK).

[0040] (2) Audio processing module: support video internal audio embedding and external input analog audio transmission, audio signal is selected to be embedded in video or transmitted independently through the DIP switch.

[0041] (3) CWDM optical-electric conversion module: serialization and multiplexing of HDMI signal and other low-speed service signal, forming a single 10Gbps high-speed signal stream, and transmitting through CWDM technology for multi-wavelength fiber parallel transmission.

[0042] (4) Ethernet serial / deserializer circuit: support two 10 / 100Mbps Ethernet expansion, through the RJ45 network interface for signal transmission, suitable for IEEE802.3 standard.

[0043] (5) MCU control signal processing module: responsible for the overall control of the system, including signal detection, state indication, etc.

[0044] (III) Receiver principle

[0045] The principle diagram of the receiver is shown in Figure 3 , mainly including the following modules:

[0046] (1) Optical signal receiving module: receives optical signal from the transmitter and converts it into electrical signal.

[0047] (2) Signal recovery module: responsible for restoring optical signals to HDMI video signals, audio signals and control signals, ensuring distortionless transmission of signals.

[0048] (3) Audio output module: supports video internal audio embedding and independent audio channel output, and users can select the output mode through the dial switch.

[0049] (4) Ethernet deserializer circuit: supports two-way 10 / 100Mbps Ethernet expansion, transmits signals through the RJ45 network port, and is compatible with IEEE802.3 standard.

[0050] (5) State detection indication module: indicates the connection state of HDMI signal through indicator light, green light indicates correct connection and normal operation of optical transceiver.

[0051] (Four) EDID selection code switch

[0052] The EDID (Extended Display Identification Data) selection code switch is as shown in Figure 4 , users can select the appropriate EDID code through the dial switch to ensure compatibility between the video source and the display device. The setting of the dial switch will affect the resolution, refresh rate and other parameters of the video signal, and users can adjust it according to actual needs.

[0053] (Five) Single-port 10M / 100Mbps high-speed Ethernet optical transmission

[0054] This embodiment supports single-port 10M / 100Mbps high-speed Ethernet optical transmission, as shown in Figure 5 . The transmitter and receiver transmit signals through the RJ45 network port, support 10M and 100M adaptive network connection speed, and have full-duplex / half-duplex working mode selection. This design ensures the stability and efficiency of network transmission, and is suitable for various network environments.

[0055] (Six) Test link access

[0056] The test link access is as shown in Figure 6 , which is used to test the performance of the optical transceiver in actual application. By connecting test equipment, users can monitor the transmission quality of HDMI signals in real time, including video resolution, audio quality, network transmission speed, etc. Test results can help users determine whether the optical transceiver is working properly and make timely adjustments.

[0057] (Seven) Operation steps

[0058] (1) Transmitter operation: Connect the high-definition video source (such as a 4K TV or a Blu-ray player) to the HDMI input interface of the transmitter through an HDMI cable. If external audio input is required, connect the external audio source through the 3.5mm audio input interface. Connect the control device through the RS232 serial interface, and connect the network device through the RJ45 network port.

[0059] (2) Receiver operation: Connect the HDMI output interface of the receiver to the display device, and the 3.5mm audio output interface to the sound equipment. Connect the network device through the RJ45 network port, and connect the control device through the RS232 serial interface.

[0060] (3) Signal detection: Determine the connection state of the HDMI signal through the status detection indicator light of the receiver. The green light indicates correct connection and the optical transceiver is working normally.

[0061] In summary, the HDMI 2.0 high-definition video optical transceiver of the present application solves the shortcomings of traditional HDMI cables in transmission distance and anti-interference ability, making installation and debugging more convenient, supporting the transmission of multiple signals, meeting the diverse needs of users in different scenarios, allowing users to better understand and operate the device, and ensuring high-quality transmission of high-definition video and audio signals.

[0062] The above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing examples, or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. An HDMI 2.0 high-definition video optical transceiver, characterized in that: The application relates to a transmitter for relaying and optoelectronic conversion of high-definition video signals, audio signals and control signals and a receiver for receiving signals transmitted by optical fibers and restoring the signals into HDMI video signals, audio signals and control signals, wherein the transmitter and the receiver are connected by a single-core optical fiber in a point-to-point mode. 2.The HDMI2.0 high-definition video optical transmitter according to claim 1, wherein: The transmitter and the receiver are both internally provided with signal equalization, serial clock recovery and line driving circuit, HDMI repeater, Ethernet serial / parallel converter circuit, CWDM optoelectronic conversion module, DDC transmission channel, MCU control signal processing and transmission channel detection indication and power module. 3.The HDMI2.0 high-definition video optical transmitter according to claim 1, wherein: The transmitter and the receiver support bidirectional RS232 communication function and realize intelligent connection with external equipment.

4. The HDMI 2.0 high-definition video optical transmitter according to claim 1, characterized in that: Transmission between the transmitter and the receiver adopts full-digital video uncompressed transmission technology, supports a maximum resolution of 4096*2160@60Hz and a high-speed video bandwidth of 18Gbps.

5. The HDMI 2.0 high-definition video optical transmitter according to claim 1, wherein: The optical transceiver supports video internal audio embedding and disembedding and transmission of externally input analog audio, the audio output frequency range is 32KHz to 192KHz, and the optical transceiver supports ARC and CEC functions.

6. The HDMI 2.0 high-definition video optical transmitter according to claim 1, characterized in that: The optical transceiver supports 1-way 3.5 independent analog audio input and output, and simultaneously supports transmitter audio embedding and receiver audio disembedding functions.

7. The HDMI 2.0 high-definition video optical transmitter according to claim 1, characterized in that: The optical transceiver supports two-way 10 / 100Mbps Ethernet extension, transmits signals through an RJ45 network port and is adapted to IEEE802.3 standard, and supports full-duplex / semi-duplex working modes.

8. The HDMI 2.0 high-definition video optical transmitter according to claim 1, characterized in that: The optical transceiver adopts CWDM technology to realize transmission of multiple signals on a single optical fiber, the wavelength is selectable, and the optical transceiver supports standard single-mode optical fiber transmission distance of 10KM.

Images