HDMI Cable Connector with Laser Diodes and RGB LEDs
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Solution Overview
Problem
Conventional HDMI cables using copper wire have limited bandwidth and are susceptible to noise or interference, and tracing fiber cables in complex installations is difficult due to the lack of visibility.
Innovation Solution
A cable assembly with a connector that converts electrical signals to optical signals and includes a circuit with laser diodes for transmitting optical signals and RGB LEDs for emitting visible light, allowing for easier identification and differentiation of cables, while conforming to a standard HDMI connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If copper wire is used to transfer data in conventional HDMI cables, then the cable structure is simple and cost-effective, but the bandwidth is limited and the cable is susceptible to noise or interference
Solution Approach 1:
The patent replaces the traditional copper wire electrical signal transmission system with an optical fiber-based system that uses light for data transmission. This substitution eliminates electromagnetic interference and bandwidth limitations inherent in copper cables, achieving superior signal quality and reliability while maintaining HDMI connector compatibility through optical-to-electrical conversion circuits at the connector interfaces
Solution Approach 2:
The patent changes the fundamental transmission parameter from electrical signals in copper conductors to optical signals in fiber optics. This parameter change enables higher bandwidth, immunity to electromagnetic interference, and improved signal integrity, while the connector design incorporates conversion circuits to maintain compatibility with standard HDMI interfaces
2Productivity
If many fiber cables are used to connect remote devices to local devices, then the data transmission capability is enhanced, but it becomes difficult to trace the fiber cables
Solution Approach 1:
The patent incorporates visible light emitting diodes (LEDs) that emit different colored lights through the optical fiber cable sheath or integrated into the connector housing. This color-coding system allows users to easily identify and trace specific cables among multiple connections, solving the tracing difficulty while maintaining high data transmission capabilities through the fiber optic medium
Solution Approach 2:
The patent introduces visible light as an intermediary signal that travels through the same optical fiber infrastructure used for data transmission. By modulating or co-transmitting visible light through the fiber, the system provides a dual-function capability: high-speed data transmission and visual cable identification, making cable tracing straightforward even in complex installations
3Reliability
If a circuit for converting electrical signals to optical signals is added to the connector, then the bandwidth and interference resistance are improved, but the device complexity increases
Solution Approach 1:
The patent divides the optical-to-electrical and electrical-to-optical conversion functions into separate integrated circuits located at each connector end. This segmentation allows each converter module to be independently optimized, tested, and replaced, reducing the complexity burden on any single component while achieving reliable bidirectional signal conversion for enhanced transmission performance
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
The solution provides higher bandwidth and interference-free signal transmission, enabling faster and more reliable data transfer with improved visibility for cable tracing and identification.
Implementation Method 1
the connector of the cable assembly includes laser diodes for transmitting optical signals to optical fiber wires inside the cable
Implementation Method 2
a light-emitting diode (LED) for emitting a visible light for transmitting to plastic fiber wires inside the cable
Data Source
AI summary
A cable assembly includes a cable and a connector, wherein the connector of the cable assembly includes laser diodes for transmitting optical signals to optical fiber wires of the cable for transferring data received from an external device and a light-emitting diode (LED) for emitting a visible light to a plastic fiber wire of the cable so that a user can use the visible light for different purposes. In addition, the connector of the cable assembly is capable of conforming to a standard HDMI connector or integrated with an earphone.