Coaxial Video Distribution with Embedded Reverse Control Signals
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Solution Overview
Problem
Existing video distribution systems lack the ability to transmit reverse control signals over coaxial cables, necessitating additional cables for control signal management, especially in high definition video transmission where control signals are embedded within the video signal.
Innovation Solution
A signal distribution system that includes signal extraction and superimposing circuits to detect and enhance reverse control signals, allowing them to be transmitted over coaxial cables without additional cables, ensuring proper control signal reception and reducing system complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional cables are used to transmit reverse control signals, then control signal transmission is achieved, but system complexity and cable quantity increase
Solution Approach 1:
The patent combines the reverse control signal transmission with the existing video signal transmission by superimposing the control signal onto the video signal carrier. This merging allows both signals to share the same coaxial cable infrastructure, eliminating the need for separate control cables and reducing system complexity while maintaining reliable control signal transmission.
Solution Approach 2:
The video signal cable is given multiple functions: it simultaneously transmits both the video signal and the reverse control signal. This multi-functionality approach eliminates the need for dedicated control cables, reducing the overall cable quantity and system complexity while ensuring reliable control signal transmission.
2Device complexity
If reverse control signal is embedded in video signal, then cable quantity is reduced, but existing video distributors cannot transmit the control signal
Solution Approach 1:
The patent introduces a signal extraction circuit as an intermediary component within the video distributor. This circuit extracts the reverse control signal from the composite video signal and routes it to the appropriate output. This intermediary mechanism enables existing video distributor infrastructure to handle embedded control signals without requiring complete system replacement.
Solution Approach 2:
The patent modifies the signal processing parameters within the video distributor by adding extraction and superimposition circuits. These parameter changes enable the distributor to separate and recombine signals appropriately, allowing it to transmit both video signals and embedded reverse control signals through the same infrastructure.
3Adaptability or versatility
If signal extraction and superimposing circuits are added, then control signal transmission capability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the reverse control signal from the composite video signal using a dedicated extraction circuit within the distributor. This extraction approach isolates the control signal processing from the main video signal path, allowing for targeted functionality addition with minimal impact on the overall system architecture.
Solution Approach 2:
The patent uses existing video signal infrastructure and adds copying/extraction circuits that replicate the necessary signal processing functions. Rather than redesigning the entire system, it copies the essential transmission capability to handle both video and control signals through the established coaxial cable network.
Data Source
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.