Low-Speed Signal Photoelectric Conversion Module for HDMI and DisplayPort
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Solution Overview
Problem
Conventional multimedia interfaces face challenges in efficiently transmitting low-speed control signals over optical fibers due to noise amplification and high costs associated with multiple laser drivers and receivers, limiting real-time and cost-effective transmission.
Innovation Solution
A low-speed signal photo-electric conversion module that analyzes and converts low-speed signals into high-speed signals using a protocol analysis module, packing and encoding module, electric-photo conversion module, and unpacking and decoding module, allowing for bidirectional transmission with only two differential pairs, thereby reducing power consumption and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple laser drivers and receivers are used for each transmission line in optical fiber, then optical signal transmission is achieved, but cost and power consumption increase significantly
Solution Approach 1:
The patent merges multiple control signal transmission lines into a single optical fiber by using a multi-protocol analysis module that consolidates HDMI, DisplayPort, and other interface control signals into one unified optical transmission channel, eliminating the need for separate laser drivers and receivers for each line
Solution Approach 2:
The photoelectric conversion module is designed with universal multi-functionality to handle multiple multimedia interface protocols (HDMI, DisplayPort, etc.) through a single device, allowing one optical fiber to replace multiple traditional copper transmission lines while reducing the number of required laser drivers and receivers
2Length of stationary object
If optical fiber transmission is used for control signals, then transmission distance is extended, but noise amplification occurs at the receiving end for low-speed signals
Solution Approach 1:
The system performs preliminary action by pre-negotiating transmission parameters and establishing signal integrity protocols before actual data transmission begins, allowing the receiving end to properly configure its amplification and filtering characteristics to avoid noise amplification
Solution Approach 2:
The patent implements feedback mechanisms where the receiving end monitors signal quality and transmits status information back to the transmitting end, enabling dynamic adjustment of transmission parameters to maintain signal integrity and prevent noise amplification during low-speed signal transmission
3Ease of manufacture
If traditional copper wire transmission is used, then implementation is simple, but transmission distance is limited due to high losses
Solution Approach 1:
The patent replaces the mechanical/electrical copper wire transmission system with an optical transmission system using optical fibers and photoelectric conversion modules, eliminating the fundamental limitations of copper wire while maintaining ease of implementation through standardized interfaces and protocols
4Reliability
If multiple transmission lines are used for multiple multimedia interfaces, then signal transmission is reliable, but device complexity and cost increase
Solution Approach 1:
The patent merges multiple separate transmission lines for different multimedia interfaces into a single optical fiber by implementing a multi-protocol analysis module that consolidates control signals from HDMI, DisplayPort, and other interfaces into one unified optical channel, reducing device complexity while maintaining transmission reliability
Solution Approach 2:
The photoelectric conversion module is designed with universal multi-functionality to handle multiple multimedia interface protocols simultaneously through a single optical fiber connection, eliminating the need for separate dedicated transmission lines for each interface type
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time transmission of control signals across multiple multimedia interfaces using optical fibers with reduced power consumption and costs, while maintaining signal integrity by converting low-speed signals into high-speed signals suitable for optical transmission.
Implementation Method 1
the electric-photo conversion module configured to convert an electric signal to an optical signal and send the optical signal via an optical fiber
Implementation Method 2
a photo-electric conversion module configured to receive an optical signal sent via an optical fiber, convert the optical signal to an electric signal
Data Source
AI summary
A photo-electric conversion module for low-speed signals of universal multimedia interface. A protocol analysis module configured to analyze directions of half duplex signals and perform conversion to full duplex signals; a packing and encoding module configured to pack received full duplex signal in a frame format and send the encapsulated signals to an electric-photo conversion module; the electric-photo conversion module configured to convert an electric signal to an optical signal and send the optical signal via an optical fiber; an unpacking and decoding module configured to perform frame unpacking and decoding on a received high-speed electric signal and send a full duplex signal obtained through protocol analysis to the protocol analysis module for protocol analysis again; and a photo-electric conversion module.