DP high-definition video optical transceiver

Abstract

The utility model relates to the technical field of optical transceivers, in particular to a DP high-definition video optical transceiver. Comprising a transmitter and a receiver, the transmitter and the receiver are connected through a single-mode optical fiber and are used for transmitting a path of non-compressed DP1.4 video signals, the highest resolution of the video signals is 8K (7680 * 4320 at-60Hz) and 4K at-120Hz, and extended transmission of 3.5 mm bidirectional audio signals, RS232 data signals and USB2.0 serial port signals is supported at the same time. According to the utility model, the advanced full-digital non-compression technology and the CWDM technology are adopted, long-distance, lossless and time-delay-free transmission of one path of non-compression DP1.4 video signals is realized through the single-mode optical fiber, and extended transmission of 3.5 mm bidirectional audio, RS232 data and USB2.0 serial port signals is supported. And the transmission bandwidth is higher, the anti-interference capability is stronger, and the installation and maintenance mode is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of optical terminals, in particular to a DP high-definition video optical terminal. Background Art

[0002] In optical communication systems, fiber optic terminals are key devices for transmitting high-speed network data. They meet the needs of various applications by implementing high-speed, stable optical communication interfaces. Video optical terminals are a general term for all video fiber transmission equipment, primarily used for the optoelectronic conversion and optical transmission of video signals. They offer lower latency and higher bandwidth, making them excellent for applications requiring high-speed data transmission. They play a vital role in modern communications, providing faster, more stable network connections. Their unique design reduces electromagnetic and microwave interference, further improving their performance and reliability.

[0003] The DP (DisplayPort) interface can be considered an enhanced version of HDMI. It boasts higher bandwidth and provides stronger support for audio and video transmission, making it particularly suitable for long-distance, lossless, and latency-free signal transmission. The DP interface provides four main transmission channels on a single cable, each with a single-channel bandwidth of 8.1Gbps, for a theoretical total bandwidth of 32.4Gbps. This is sufficient to support 4K 120Hz output with 10-bit color, as well as 8K 60Hz output. In addition, the DP interface also provides a powerful auxiliary channel (AUX) with a transmission bandwidth of 1Mbps and a latency of no more than 500μs, making it suitable for direct transmission of low-bandwidth data.

[0004] Most existing optical video transceivers use compression technology to transmit video signals. While this reduces bandwidth requirements, the compression process can lead to a loss of video quality and loss of image detail, especially in high-resolution and high-frame-rate applications. Furthermore, existing optical video transceivers are susceptible to electromagnetic and microwave interference over long distances, resulting in signal instability and image quality degradation. Existing equipment is also complex to install and maintain, requiring specialized technicians to configure and debug.

[0005] In the existing technology, DP high-definition video optical terminals have the following deficiencies in actual use. Specifically, (1) Video quality loss: Most existing video optical terminals use compression technology to transmit video signals. Although this compression technology can reduce bandwidth requirements, it will lose some image quality during the decompression process. Especially when transmitting high-resolution and high-frame-rate video signals, image details will be damaged, resulting in a decrease in image quality. (2) Poor anti-interference ability: Existing video optical terminals are easily affected by electromagnetic interference and microwave interference during long-distance transmission. Especially in industrial environments, the presence of various electromagnetic and microwave devices makes video signal transmission unstable and image quality degraded. (3) Limited transmission distance: When transmitting high-bandwidth signals, the transmission distance of existing video optical terminals is usually short, generally not exceeding 10 km, which cannot meet the needs of long-distance transmission. (4) Complex installation and maintenance: Existing video optical terminals are relatively complex in installation and maintenance, requiring professional technicians to configure and debug, which increases the user's usage cost. Summary of the Invention

[0006] The utility model provides a DP high-definition video optical terminal, which adopts advanced all-digital uncompressed technology and CWDM wavelength division multiplexing technology to achieve long-distance, lossless and delay-free transmission of one non-compressed DP1.4 video signal through single-mode optical fiber, and supports extended transmission of 3.5mm two-way audio, RS232 data and USB2.0 serial port signals. It has higher transmission bandwidth, stronger anti-interference ability and simpler installation and maintenance.

[0007] The technical solution adopted by the present invention is: a DP high-definition video optical terminal, including a transmitter and a receiver, which are connected by a single-mode optical fiber and are used to transmit a non-compressed DP1.4 video signal. The maximum resolution of the video signal is 8K (7680×4320@60Hz) and 4K@120Hz, and it also supports the extended transmission of 3.5mm two-way audio signals, RS232 data signals and USB2.0 serial port signals.

[0008] As a further improvement of the present invention, the transmitter includes 5-wavelength lasers and 1 wavelength light detector, the wavelengths of the lasers are 1270nm, 1290nm, 1310nm, 1330nm and 1490nm respectively, and the wavelength of the light detector is 1550nm.

[0009] As a further improvement of the present invention, the receiver includes 1 wavelength laser and 5 wavelength photodetectors, the wavelength of the laser is 1550nm, and the wavelengths of the photodetectors are 1270nm, 1290nm, 1310nm, 1330nm and 1490nm respectively.

[0010] As a further improvement of the present invention, the optical terminal has a built-in automatic equalization circuit, which supports lossless regeneration and relaying of video, ensuring clarity, stability and smoothness of the image during transmission.

[0011] As a further improvement of the present invention, the optical terminal adopts CWDM wavelength division multiplexing technology to realize the transmission of multiple signals on a single optical fiber, with a transmission distance of up to 20 km.

[0012] As a further improvement of the present invention, the video signal bandwidth of the optical terminal is 32.4 Gb / s, and the bandwidth of each channel is 8.1 Gb / s.

[0013] As a further improvement of the present invention, the transmitter and receiver both use DP female interface, the optical interface uses 1XLC interface, the audio signal interface uses 3.5mm stereo audio socket, the RS232 data signal interface uses 3pin Phoenix terminal, and the USB2.0 serial port signal interface supports USB2.0 protocol.

[0014] As a further improvement of the present invention, the operating temperature range of the transmitter and receiver is -15°C to 55°C, the storage temperature range is -40°C to 80°C, and the adaptable humidity range is 0 to 95%.

[0015] As a further improvement of the present invention, the power supply parts of the transmitter and receiver support the DC12V / 1.5-2A voltage range to ensure stable operation of the equipment in different voltage environments.

[0016] The beneficial effects of the present invention are as follows: (1) Uncompressed video transmission: The present invention adopts advanced all-digital uncompressed technology, which can transmit one-way uncompressed DP1.4 video signal, and the highest resolution supports 8K (7680×4320@60Hz) or 4K@120Hz, ensuring that the video signal has no quality loss during the transmission process and the image details are perfectly preserved. It is suitable for scenarios requiring high-definition lossless video transmission.

[0017] (2) High bandwidth support: The total bandwidth of the video signal of this utility model reaches 32.4Gb / s, and the bandwidth of each channel is 8.1Gb / s, which is sufficient to support 4K120Hz output and 8K60Hz output with 10-bit color, ensuring the efficiency and smoothness of signal transmission.

[0018] (3) Strong anti-interference capability: By adopting optical fiber transmission technology, the utility model can effectively reduce the impact of electromagnetic interference and microwave interference; especially in industrial environments, the anti-interference performance is significantly improved, ensuring the stable transmission of image signals.

[0019] (4) Long-distance transmission: This utility model uses CWDM wavelength division multiplexing technology to achieve long-distance transmission of multiple signals on a single-mode optical fiber. The transmission distance can reach 20 km, which can meet the needs of long-distance transmission and is suitable for long-distance applications such as long-distance high-definition television transmission and smart home audio and video management systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a signal transmission diagram of a DP high-definition video optical terminal in the utility model;

[0021] Figure 2 This is a transmitter principle block diagram of a DP high-definition video optical terminal in this utility model;

[0022] Figure 3 This is a principle block diagram of a receiver of a DP high-definition video optical terminal in this utility model;

[0023] Figure 4 This is a wavelength division multiplexing connection block diagram of a DP high-definition video optical terminal in the utility model;

[0024] Figure 5 This is a USB2.0 signal flow chart of a DP high-definition video optical terminal in this utility model;

[0025] Figure 6 This is a test link access diagram of a DP high-definition video optical terminal of the utility model. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to explain this application and are not intended to limit this application.

[0027] The utility model provides a DP high-definition video optical terminal, including a transmitter and a receiver, which are connected by a single-mode optical fiber and are used to transmit an uncompressed DP1.4 video signal. The maximum resolution of the video signal is 8K (7680×4320@60Hz) and 4K@120Hz. It also supports the extended transmission of 3.5mm two-way audio signals, RS232 data signals and USB2.0 serial port signals.

[0028] In the utility model, the transmitter includes a five-wavelength laser and a one-wavelength light detector, the wavelengths of the lasers are 1270nm, 1290nm, 1310nm, 1330nm and 1490nm, and the wavelength of the light detector is 1550nm; the receiver includes a one-wavelength laser and a five-wavelength light detector, the wavelength of the laser is 1550nm, and the wavelengths of the light detector are 1270nm, 1290nm, 1310nm, 1330nm and 1490nm.

[0029] The optical terminal in this utility model has a built-in automatic equalization circuit and supports lossless video regeneration and relay, ensuring clear, stable and smooth images during transmission. The optical terminal adopts CWDM wavelength division multiplexing technology to realize the transmission of multiple signals on a single optical fiber, with a transmission distance of up to 20km. The video signal bandwidth of the optical terminal is 32.4Gb / s, and the bandwidth of each channel is 8.1Gb / s.

[0030] The transmitter and receiver in this utility model both use a DP female interface, the optical interface uses a 1XLC interface, the audio signal interface uses a 3.5mm stereo audio socket, the RS232 data signal interface uses a 3-pin Phoenix terminal, and the USB2.0 serial port signal interface supports the USB2.0 protocol; the operating temperature range of the transmitter and receiver is -15°C to 55°C, the storage temperature range is -40°C to 80°C, and the adaptable humidity range is 0 to 95%; the power supply part of the transmitter and receiver supports a DC12V / 1.5-2A voltage range to ensure stable operation of the equipment in different voltage environments. Example

[0031] This embodiment provides a DP high-definition video optical terminal. This is a fully digital fiber-optic transmission device for transmitting high-speed, high-resolution video signals and various auxiliary signals. Using optical fiber as the transmission medium, it features fully digital, uncompressed technology, advanced video processing chips, and CWDM (coarse wavelength division multiplexing) technology, enabling long-distance, lossless, and delay-free signal transmission.

[0032] (1) System composition

[0033] (1) Transmitter and receiver

[0034] The DP HD video optical terminal consists of a transmitter and a receiver, connected by a single-mode optical fiber. The transmitter converts electrical signals into optical signals and transmits them through the optical fiber, while the receiver converts the optical signals back into electrical signals and outputs them to display devices and peripherals.

[0035] (2) Signal transmission

[0036] like Figure 1The figure below illustrates the overall signal transmission process of a DP HD video optical transceiver. The transmitter receives DP video signals, 3.5mm bidirectional audio signals, RS232 data signals, and USB 2.0 signals from the signal source. It converts these signals into optical signals using built-in circuitry and lasers, and then transmits them to the receiver via single-mode optical fiber. The receiver converts the optical signals into electrical signals using an optoelectronic conversion module and transmits them to the display device and peripherals.

[0037] (3) Transmitter principle

[0038] like Figure 2 As shown in the figure, the detailed working principle of the transmitter is shown. The transmitter mainly includes the following modules:

[0039] ①Signal input: Receive DP video signal, 3.5mm two-way audio signal, RS232 data signal and USB2.0 signal from the signal source.

[0040] ②Signal processing: Built-in signal equalization circuit, serial clock recovery and line driver circuit to ensure signal stability and quality.

[0041] ③DP Repeater: Eliminate signal jitter and improve signal quality through dual-mode DP retimer relay.

[0042] ④ Ethernet serial / deserializer circuit: used to process the transmission of auxiliary signals (such as AUX, USB, RS232, etc.).

[0043] ⑤CWDM optoelectronic conversion module: converts the processed electrical signal into optical signals of different wavelengths and transmits them through a single optical fiber.

[0044] ⑥Power module: Provides stable DC12V power supply to ensure continuous operation of the equipment.

[0045] (IV) Receiver Principle

[0046] like Figure 3 As shown in the figure, the detailed working principle of the receiver is shown. The receiver mainly includes the following modules:

[0047] ① Optical signal reception: Receive optical signals from optical fibers through optical detectors.

[0048] ② Photoelectric conversion: converting optical signals into electrical signals.

[0049] ③Signal equalization: Built-in automatic equalization circuit to restore signal quality and ensure clear, stable and smooth images.

[0050] ④DP repeater: Regenerates DP1.4 signal that complies with the specification and eliminates jitter through dual-mode DP retimer relay.

[0051] ⑤ Ethernet serial / deserializer circuit: converts auxiliary signals (such as AUX, USB, RS232, etc.) into electrical signals.

[0052] ⑥Signal output: Output DP video signal, 3.5mm two-way audio signal, RS232 data signal and USB2.0 signal to display devices and peripherals.

[0053] ⑦Power module: Provides stable DC12V power supply to ensure continuous operation of the equipment.

[0054] (5) Wavelength Division Multiplexing Technology

[0055] like Figure 4 The figure shows the CWDM (coarse wavelength division multiplexing) technology of the HD video optical terminal, which multiplexes optical signals of different wavelengths to achieve the transmission of multiple signals on the same optical fiber. The specific wavelengths are as follows:

[0056] ① Transmitter laser: 1270nm, 1290nm, 1310nm, 1330nm, 1490nm, used to transmit 4 main channel video signals and 1 auxiliary channel signal.

[0057] ② Transmitter photodetector: 1550nm, used to receive 1.25Gb / s bidirectional signals from the receiver.

[0058] ③Receiver laser: 1550nm, used to send 1.25Gb / s bidirectional signals.

[0059] ④Receiver photodetector: 1270nm, 1290nm, 1310nm, 1330nm, 1490nm, used to receive 4 main channel video signals and 1 auxiliary channel signal.

[0060] (6) USB2.0 signal transmission

[0061] like Figure 5 The figure below illustrates the USB 2.0 signal transmission process of a DP high-definition video optical transceiver. The transmitter's USB 2.0 signal is transmitted to the receiver using gigabit digital encoding technology. The receiver decodes the signal and outputs it to the USB device. This process requires no external quartz oscillator or timing reference, and it automatically identifies USB high-speed, full-speed, or low-speed devices. It also supports USB-HUB expansion, meeting the needs of a variety of USB peripherals.

[0062] (VII) Test link access

[0063] like Figure 6Figure 2 shows a detailed test connection diagram for a DP HD video optical transceiver. In the test environment, the transmitter is connected to a signal source (such as a computer or video server), and the receiver is connected to a display device (such as a monitor or projector) and peripherals (such as a USB keyboard, mouse, USB flash drive, printer, etc.). The transmitter and receiver are connected via single-mode fiber to test the device's performance at different transmission distances.

[0064] (8) Application scenarios

[0065] The DP high-definition video optical terminal of this embodiment is suitable for various application scenarios, including but not limited to:

[0066] ① Remote HDTV transmission: supports long-distance lossless video transmission, suitable for broadcasting, television, distance education and other scenarios.

[0067] ②Smart home audio and video management system: supports high-definition video and two-way audio transmission, suitable for home theater, smart security and other scenarios.

[0068] ③ High-definition public display video transmission: supports long-distance transmission of multiple signals, suitable for commercial displays, advertising screens and other scenarios.

[0069] ④Industrial monitor monitoring: supports the transmission of high-resolution video and multiple data signals, suitable for industrial production and quality monitoring.

[0070] ⑤Remote multi-monitor system: supports the transmission of multiple video signals and is suitable for command centers, conference rooms and other scenarios.

[0071] ⑥ Command exercises and dispatch control: Supports high-bandwidth, low-latency video transmission, suitable for military exercises and dispatch control.

[0072] ⑦ High-definition video conferencing system: supports high-definition video and two-way audio transmission, suitable for remote conferencing and collaboration.

[0073] (IX) Performance characteristics

[0074] The DP high-definition video optical terminal of this embodiment has the following performance characteristics:

[0075] (1) Digital transmission without delay: clear images and strong anti-interference ability.

[0076] (2) Compatible with DP1.4 protocol: supports transparent transmission of AUX signals.

[0077] (3) Support multiple resolutions: The highest resolution supports 8K (7680×4320@60Hz) or 4K@120Hz.

[0078] (4) High bandwidth support: Video signal bandwidth reaches 32.4Gb / s, and each channel bandwidth is 8.1Gb / s.

[0079] (5) Built-in automatic equalization: supports lossless video regeneration and relay, ensuring clear, stable and smooth images.

[0080] (6) No intermodulation interference from analog optical terminals: Using gigabit digital coding technology, the signal is smooth and the delay is small.

[0081] (7) Independent two-way audio transmission: supports distortion-free transmission of two-way audio signals.

[0082] (8) Bidirectional RS232 serial port data transmission: supports RS232 data transmission with adaptive baud rate.

[0083] (9) Support USB2.0 protocol: support the transmission of USB2.0 devices such as USB keyboard, mouse, U disk, printer, mobile hard disk, wireless keyboard and mouse, touch screen, etc.

[0084] (10) Using CWDM wavelength division multiplexing technology: realizing the transmission of multiple signals on a single optical fiber, with a transmission distance of up to 20 km.

[0085] (11) Fiber extension LC interface: supports single-mode fiber connection.

[0086] (12) Support input and output signal LINK and mode selection LED indication: convenient for users to monitor signal transmission status.

[0087] (13) 2 / 4 USB port design: supports the use of large-capacity USB devices.

[0088] (14) Built-in ESD electrostatic protection circuit: effectively prevents electrostatic damage.

[0089] (15) Support DP interface hot plug technology: convenient for equipment use and maintenance.

[0090] (16) Power supply voltage DC+12V: Low voltage power supply design is adopted to ensure the stability and safety of the equipment.

[0091] In summary, this utility model's DP high-definition video optical terminal is a high-performance, highly reliable fiber optic transmission device. Leveraging advanced all-digital, uncompressed technology and CWDM wavelength division multiplexing (CWDM) technology, it enables long-distance, lossless, and delay-free transmission of video and auxiliary signals. Its wide range of applications and robust performance make it an ideal choice for modern communications and display systems.

[0092] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A DP high-definition video optical terminal, characterized by: It includes a transmitter and a receiver, which are connected by a single-mode optical fiber and are used to transmit an uncompressed DP1.4 video signal with a maximum resolution of 8K (7680×4320@60Hz) and 4K@120Hz. It also supports extended transmission of 3.5mm two-way audio signals, RS232 data signals and USB2.0 serial port signals.

2. The DP high-definition video optical terminal according to claim 1, characterized in that: The transmitter includes five wavelength lasers and one wavelength photodetector, the wavelengths of the lasers are 1270nm, 1290nm, 1310nm, 1330nm and 1490nm respectively, and the wavelength of the photodetector is 1550nm.

3. The DP high-definition video optical terminal according to claim 1, characterized in that: The receiver includes a 1-wavelength laser and 5-wavelength photodetectors, the wavelength of the laser is 1550nm, and the wavelengths of the photodetectors are 1270nm, 1290nm, 1310nm, 1330nm and 1490nm respectively.

4. The DP high-definition video optical terminal according to claim 1, characterized in that: The optical terminal has a built-in automatic equalization circuit and supports lossless video regeneration and relaying, ensuring that the image is clear, stable and smooth during transmission.

5. The DP high-definition video optical terminal according to claim 1, characterized in that: The optical terminal adopts CWDM wavelength division multiplexing technology to realize the transmission of multiple signals on a single optical fiber, with a transmission distance of up to 20km.

6. The DP high-definition video optical terminal according to claim 1, characterized in that: The video signal bandwidth of the optical terminal is 32.4Gb / s, and the bandwidth of each channel is 8.1Gb / s.

7. The DP high-definition video optical terminal according to claim 1, characterized in that: The transmitter and receiver both use DP female interface, the optical interface uses 1XLC interface, the audio signal interface uses 3.5mm stereo audio socket, the RS232 data signal interface uses 3pin Phoenix terminal, and the USB2.0 serial port signal interface supports USB2.0 protocol.

8. The DP high-definition video optical terminal according to claim 1, characterized in that: The transmitter and receiver have an operating temperature range of -15°C to 55°C, a storage temperature range of -40°C to 80°C, and an adaptable humidity range of 0 to 95%.

9. The DP high-definition video optical terminal according to claim 1, characterized in that: The power supply of the transmitter and receiver supports the DC12V / 1.5-2A voltage range, ensuring stable operation of the equipment in different voltage environments.

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