Optical Fiber Data Transmission with Tension Member Control
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Solution Overview
Problem
Current Digital Visual Interface (DVI) and High-Definition Multimedia Interface (HDMI) systems face limitations in distance due to high data rates and low voltage levels, requiring multiple optical fibers for data transmission, which increases costs and complexity, and struggle with variable data rates and bi-directional control data communication.
Innovation Solution
The method involves converting frequency-dependent data to frequency-independent data, transmitting at a fixed rate, and using optical fibers with tension members for tensile stiffness, enabling reduced channel requirements and bi-directional control data communication without additional cost, by encoding timing information and using current modulation for lower data rate signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If multiple optical fibers are used to transmit DVI/HDMI data, then data transmission distance is improved, but system cost and complexity increase
Solution Approach 1:
The patent combines multiple data channels (downstream control data, upstream control data, and graphic data) into a single optical fiber transmission channel. The DVI interface uses one optical fiber for downstream control data and graphic data, while the HDMI interface uses one optical fiber for upstream control data and graphic data, eliminating the need for separate fibers for each channel and reducing overall system complexity.
Solution Approach 2:
The optical fiber serves multiple functions simultaneously by carrying both high-speed graphic data and control data in bidirectional communication. The single fiber handles multiple data types through time-division or wavelength-division multiplexing, making the transmission medium universal and reducing the total number of fibers required in the system.
2Length of stationary object
If multiple optical fibers are used to transmit DVI/HDMI data, then data transmission distance is improved, but system cost increases
Solution Approach 1:
The patent merges multiple data streams into a single optical fiber channel, reducing the quantity of optical fibers required. By consolidating downstream control data, upstream control data, and graphic data transmission into fewer fibers, the system reduces material costs and installation expenses associated with multiple separate fiber connections.
3Adaptability or versatility
If variable data rates are supported, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic data rate adjustment capability where the DVI and HDMI interfaces can adapt their transmission rates based on the specific graphic data requirements. The system supports variable pixel clock frequencies and data rates without requiring complex additional circuitry, as the optical transmission infrastructure naturally accommodates rate changes through standard DVI/HDMI protocol mechanisms.
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 approach reduces the number of optical fibers needed, lowers system costs, maintains data quality, and enables efficient bi-directional control data communication, while supporting variable and fixed data rates without additional circuitry.
Implementation Method 1
transmitting the data over the optical fiber to a receiver
Implementation Method 2
tension members for avoiding elongation of the optical fibers due to tension with a sheath
Implementation Method 3
converting the frequency dependent data to frequency independent data; determines a ratio of a number of data clock cycles to a number of reference clock cycles; transmits the determined ratio
Implementation Method 4
using current modulation for lower data rate signals
Data Source
AI summary
A system and method transmits graphic data received at varying frequencies at a fixed data rate. The frequency dependent data and associated data clock signal are received and the frequency dependent data is converted to frequency independent data. A ratio of a number of data clock cycles to a number of reference clock cycles is determined and transmitted. The frequency independent data and header data are transmitted, at a fixed rate, to a receiver, the fixed rate being a frequency greater than the frequency of the associated data clock signal. The received the frequency independent data is converted to frequency dependent data based upon the received determined ratio. The communication channel may include an optical fiber and a tension member wherein control data is transmitted along the tension member and graphic data is transmitted along the optical fiber.