Coaxial Video Distribution with Reverse Control Signal Extraction
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Solution Overview
Problem
Existing video distribution systems lack the capability to transmit reverse control signals over coaxial cables, particularly in high definition video transmission, leading to the need for additional cables and inefficient signal control.
Innovation Solution
A signal distribution system that includes load detection and signal extraction circuits to detect and extract reverse control signals from coaxial cables, using OR gates and signal superimposing circuits to ensure accurate transmission without forming closed loops, thereby enabling coaxial control functions without additional cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If HD video transmission technology embeds reverse control signal into video signal for transmission through coaxial cable, then cable quantity is reduced, but existing video distributor cannot transmit reverse control signal
Solution Approach 1:
The video distributor is enhanced to perform multiple functions: it can now both distribute video signals and transmit reverse control signals through the same coaxial cable infrastructure. The switching circuit enables the distributor to handle bidirectional signal transmission, making it a universal device for both video and control functions.
Solution Approach 2:
The switching circuit acts as an intermediary component that enables the video distributor to interface with reverse control signals. This intermediary mechanism allows the distributor to selectively connect or disconnect based on signal type, facilitating control signal transmission without interfering with video signal distribution.
2Adaptability or versatility
If video distributor transmits reverse control signal, then coaxial control function is achieved, but risk of closed loop formation increases
Solution Approach 1:
The system incorporates feedback mechanisms through detection circuits that monitor the presence of reverse control signals. These detection circuits provide feedback to the switching circuit, enabling it to make intelligent decisions about when to connect or disconnect, thereby preventing closed loop formation while maintaining reliable control signal transmission.
Solution Approach 2:
The switching circuit dynamically adjusts its state based on real-time signal conditions. It can switch between connected and disconnected states depending on whether a reverse control signal is detected, making the system adaptive and reliable rather than static and potentially problematic.
3Measurement precision
If load detection circuit and signal extraction circuit continuously monitor signal conditions, then accurate signal extraction is ensured, but system complexity increases
Solution Approach 1:
The load detection circuit and signal extraction circuit are integrated into the video distributor system, combining multiple functions into a unified structure. This merging approach ensures accurate signal monitoring and extraction while avoiding the complexity of separate standalone systems.
Solution Approach 2:
The detection and extraction circuits are designed to automatically monitor and process signals without requiring external control or intervention. The system self-regulates by detecting signal conditions and automatically triggering appropriate switching actions, reducing operational complexity.
Data Source
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AI summary
A system may comprise at least one signal input circuit configured to receive target input signals from at least one sensor device; at least one signal processing unit. Each of the at least one signal processing unit may include at least one signal output circuit configured to output signals to a first electronic connection; and at least one signal extraction circuit configured to obtain a reverse control signal from the first electronic connection; and at least one signal superimposing circuit configured to generate superimposed reverse control signals by superimposing the first reverse control signal with other electronic signals, and output the superimposed reverse control signal to the signal input circuit.