HDMI Transmission Apparatus with Electro-Optic Signal Conversion
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Solution Overview
Problem
The increasing information amount in high definition video signals poses a challenge for transmission, as physical limitations restrict the transmission rate of electrical signals, making it difficult to maintain high-definition video and audio signal transmission over long distances without reducing cable length.
Innovation Solution
A transmission apparatus that converts video baseband signals into both electrical and optical signals, using a signal processor to separate and convert high-band video signals into optical signals, while low-band signals are transmitted as electrical signals, maintaining compatibility with the HDMI standard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If video signals are transmitted as electrical signals according to HDMI standard, then compatibility with conventional devices is maintained, but transmission rate is limited by physical constraints
Solution Approach 1:
The video signal is divided into multiple channels: electrical signal channels for backward compatibility and optical signal channels for high-speed transmission. This segmentation allows the system to simultaneously support both conventional HDMI devices and high-definition video transmission requirements.
Solution Approach 2:
An optical signal acts as an intermediary to bridge the gap between conventional electrical signal transmission and high-definition video requirements. The optical cable serves as a mediator that enables higher transmission rates while electrical cables maintain compatibility with existing devices.
2Length of stationary object
If cable length is increased to allow longer transmission distances, then flexibility and coverage are improved, but signal quality deteriorates due to physical limitations
Solution Approach 1:
The electrical signal transmission system is replaced with an optical signal transmission system for high-definition video channels. This substitution eliminates the physical limitations of electrical cables, allowing for longer cable lengths without signal quality degradation while maintaining electrical cable connections for compatibility.
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 the transmission of high-resolution video signals with a large information amount, overcoming the limitations of electrical signal transmission rates and allowing for longer cable lengths while maintaining backward compatibility with conventional HDMI standards.
Implementation Method 1
a second converter configured to convert the video signal into an optical signal
Data Source
Figure 1
Figure 2
Figure 3(a)~3(e)
AI summary
There is provided a transmission apparatus that can transmit a video signal with a large information amount. The transmission apparatus includes a video obtainer configured to obtain a video signal, a first converter configured to convert the video signal into an electrical signal complying with a high definition multimedia interface (HDMI (registered trademark)) standard, a second converter configured to convert the video signal into an optical signal, and a signal processor configured to perform at least one of the conversion using the first converter and the conversion using the second converter with respect to the obtained video signal.