Pure-Optical Active Cable Powering via High-Speed Signal Line
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Solution Overview
Problem
Existing pure-optical active cables face challenges in powering low-speed signal optoelectronic transmission modules, especially when display devices lack USB or other power supply ports, leading to inconvenience in transmitting audio and video signals over long distances.
Innovation Solution
The proposed solution involves connecting the power supply ports of high-speed and low-speed signal optoelectronic transmission modules to a high-speed signal line, utilizing a noise suppression module and power switch, and incorporating a controller to manage power supply, allowing the modules to draw power from the termination power supply of the display device, thereby eliminating the need for Y-Cables and enabling operation without USB or other power ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If pure-optical AOC cables are used to transmit audio and video signals over long distances, then transmission rate is improved and signal loss is reduced, but power supply becomes problematic when display devices lack USB or other power ports
Solution Approach 1:
The high-speed signal line is designed to serve dual functions: transmitting high-speed video signals and providing power supply to the receiving end modules. By making the signal line multi-functional, the patent eliminates the need for separate power supply connections, allowing the cable to work in environments where display devices lack USB or other power ports.
Solution Approach 2:
The receiving end modules (high-speed signal optoelectronic transmission module and low-speed signal optoelectronic transmission module) obtain power autonomously by drawing it from the termination power supply through the high-speed signal line. This self-service power supply mechanism eliminates dependency on external power ports or Y-Cables, enabling the system to operate independently in environments with limited power availability.
2Reliability
If Y-Cables are used to provide power to receiving end modules, then power supply is ensured, but device complexity increases and ease of operation decreases
Solution Approach 1:
The patent extracts the power supply function from the separate Y-Cable configuration and integrates it directly into the high-speed signal line. By removing the need for Y-Cables and separate power connections, the system maintains reliable power supply to receiving end modules while significantly reducing device complexity and easing operation.
3Adaptability or versatility
If power is drawn from the high-speed signal line, then additional power ports are not needed, but noise and interference may affect signal quality
Solution Approach 1:
The patent introduces a termination power supply as an intermediary component at the receiving end that connects to the high-speed signal line. This termination power supply acts as a mediator that extracts power from the signal line while incorporating noise suppression functionality, thereby reducing high-frequency noise and spike interference that would otherwise affect signal quality.
Solution Approach 2:
The patent converts the potentially harmful high-frequency noise and spike interference inherent in power drawn from the high-speed signal line into a benefit by using noise suppression modules. These modules filter and eliminate the noise, transforming what would be a harmful effect into a clean power supply source that enhances environmental adaptability.
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
This configuration ensures reliable power supply to both high-speed and low-speed signal modules, enabling efficient transmission of audio and video signals over long distances without the need for additional power sources, and allows the cables to function properly even when display devices are in dormant states or have insufficient power supply.
Implementation Method 1
the second high-speed signal optoelectronic transmission module connects to the first high-speed signal optoelectronic transmission module through the optical fiber
Implementation Method 2
This technology can convert low-speed signals and low-voltage differential signals to each other at the sending end, then carry out optoelectronic conversion, and transmit the signals to the receiving end in the form of light signals
Data Source
AI summary
The disclosure discloses a receiving end/signal transmitting method, a pure-optical active cable and an active cable. The receiving end includes a first high-speed signal optoelectronic transmission module and a first low-speed signal optoelectronic transmission module; a power supply port of the first high-speed signal optoelectronic transmission module being connected with a high-speed signal line of the receiving end, and a power supply port of the first low-speed signal optoelectronic transmission module being connected with the high-speed signal line. When the high-speed signal line of the receiving end is connected to a termination power supply of a display device during signal transmitting, the first high-speed signal optoelectronic transmission module and the first low-speed signal optoelectronic transmission module are capable of acquiring a power supply signal from the high-speed signal line to solve power supply in the receiving end of the pure-optical active cable.