FPGA-based multi-service high-definition video optical transceiver solution
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Project Overview
In the field of multi-service optical transceivers, a good product can be said to be mainly designed rather than produced. The ideas and solutions at the beginning of design have already determined the quality of the product. Therefore, the most important aspect of the optical transceiver is the design. Ideas, program optimization and device selection. Beijing Jinshi Tianchuang Science and Technology Co., Ltd. designs with FPGA as the core design solution, with very strong system flexibility and extensibility, and can easily realize long-distance transmission of multiple business functions. Not only can transmit high-definition video, but also support stereo audio, Ethernet, USB, RS232, RS485, RS422 and other services. And integrate KVM keyboard, mouse and network ports, serial port transparent transmission function. The FPGA architecture can more flexibly realize multiple high-definition interface inter-conversion outputs and support arbitrary scaling resolution of images. It is a cost-effective, customized high-definition video multi-service optical transceiver solution.
Functional characteristics
Supports single-core fiber (single-mode/multi-mode) transmission of all HD signals at transmission distances up to 80Km and even 120Km
Optical modules with SFP structure can be unidirectional, asymmetric bidirectional or symmetrical bidirectional transmission
Card-type structure, can expand USB and NET network interface
Supports multiple signal interfaces HDMI/DVI-I/VGA
Can achieve a variety of high-definition interface interchange output
Supports any image scaling resolution
Supports independent stereo audio two-way transmission for HDMI audio embedding
Can achieve a variety of data access RS232, RS485, RS422, etc.
Support DVI ring out
Support network port transparent transmission, realize the function of bridge
Support bi-directional KVM function, realize remote KVM control computer
Supports bidirectional serial port transparent transmission
Supports two-way voice intercom
Supports bi-directional infrared control
Advanced adaptive technology eliminates the need for electro-optic adjustment
l LED status indicator monitors key parameters
l EDID automatic adaptation, automatic setting and configuration display mode;
l No software setup, plug and play support, hot swappable
l Applicable to industrial harsh environment such as extremely high temperature and extremely low temperature;
Scheme principle
Send board:
The structure of the sending board mainly includes connectors for DVI, audio, and power, LED indicators, and dial switches. Its core is a FPGA, FPGA connects a 2.5G optical module, optical module has 3 choices:
3G unidirectional optical module
3G and 155M Asymmetric Bidirectional Optical Modules
3G symmetrical bidirectional optical module
The optical module adopts the SFP structure and can be plugged and unplugged at any time. Therefore, the above-mentioned 3 optical modules can be replaced at any time according to requirements.
Receiving board:
The structure of the receiving board is a connector surface, which mainly includes connectors for DVI, audio, power, etc., LED indicators, and dial switches.
The appearance of the receiving board and the emitting board is basically the same. We are designing the PCB board. We can design the board's dimensions in the same way as the connector's position so that the same chassis design can be used.
USB-NET expansion board:
The USB-NET expansion board mainly includes an MCU chip for extending one USB interface and one 10M/100M network PHY chip for extending a 10M/100M network interface. The USB-NET expansion board is connected to the sending board or receiving board through a pin header.
The USB-NET expansion board can expand two USB ports, one 10M/100M network interface, one infrared remote control input interface and one infrared remote control output interface.
The USB interface can be set to work in the master mode or slave mode, so that you can connect a USB mouse or keyboard, you can also connect the USB port on the host, for transparent USB mouse or keyboard, remote KVM control computer.
The 10M/100M network interface also transparently transmits network signals and realizes the function of a bridge. The two networks are connected through optical fibers.
The infrared remote control interface also transmits infrared control signals transparently, and uses optical fibers to realize the transparent transmission function of the infrared remote control signals.
DVI-I interface:
The DVI interface input chip and output chip selected in this solution both support DVI input or output and support VGA input and output at the same time. Therefore, the DVI connector can select the DVI-I connector so that the VGA input or output can be selected through the DVI-VGA adapter.
HDMI interface:
In this solution, the DVI connector of the sending board can be connected to the HDMI signal through the HDMI-DVI conversion connector, that is, it supports HDMI signal input with voice or HDCP encryption.
audio port:
In this scheme, both the sending board and the receiving board have audio input and audio output interfaces, and the audio input and audio output interfaces are two-channel stereo voice interfaces.
Through the voice interface, computer voice can be transmitted separately, and bidirectional intercom function can also be implemented.
The audio input/output mode can be set through the dial switch: The sending card and receiving card can set the audio output to video embedded audio, audio loop out, reverse audio, audio embedding and other functions.
Receiver board output resolution:
The output resolution of the receiving board supports 1920*1200@60Hz at maximum, and is backward compatible with all conventional resolutions.
Jinshi Tianchuang Technology Co., Ltd. multi-service optical transceiver, DVI optical transceiver, 2-way DVI optical transceiver, 2-way bidirectional DVI optical transceiver, 4-channel DVI optical transceiver, 4-way bidirectional DVI optical transceiver, HDMI optical transceiver, 2-channel HDMI optical transceiver, 2-way bidirectional HDMI optical transceiver, 4 HDMI optical transceivers, 4 bidirectional HDMI optical transceivers, 8 HDMI optical transceivers, 1-16 3G-SDI optical transceivers, DVI+KVM optical transceivers, HDMI+KVM optical transceivers, and VGA+KVM optical transceivers With the unanimous recognition and favorable comments, the current products have been widely used in military, transportation, government, education, power, telecommunications, media and other fields.

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Coeffort has been supplying steel equipment, structure manufacturing and Installation service from the year of 2013. We focus on producing the highest quality mechanical steel structures and conveyor equipment with advanced steel fabrication processes and machinery. Our commitment to quality metal products, superior customer service and ability to manufacture and assemble has earned us the trust and recognition from our clients in Australia and Asian countries.


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