Video Device Auto-Configuring Identical Input Output Terminals
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Solution Overview
Problem
Video devices with input and output connectors of the same shape require careful attention to connect video signal cables correctly, leading to potential incorrect connections during daisy-chaining or connecting multiple devices, which can prevent correct video image display.
Innovation Solution
A video device with a video signal processing unit, dual video signal terminals of the same shape, detection units, and switches that automatically determine and control the connection state based on cable detection results, allowing the device to automatically set input and output terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If input and output connectors are made of the same shape for simplicity and symmetry, then device complexity is reduced and aesthetics are improved, but connection reliability deteriorates because operators may connect cables incorrectly without visual differentiation
Solution Approach 1:
The system automatically detects cable connections and configures input/output terminals without operator intervention. The detection unit identifies connected cables, and the control unit automatically sets up signal flow paths, eliminating the need for operators to manually configure connections while ensuring correctness
Solution Approach 2:
The detection unit provides real-time feedback on cable connection states to the control unit, which then adjusts switch configurations accordingly. This closed-loop feedback mechanism ensures that connections are automatically verified and corrected if misconnections are detected
2Reliability
If operators manually configure input and output terminals, then connection reliability can be maintained, but ease of operation deteriorates because operators must pay particular attention to correct terminal identification
Solution Approach 1:
The system performs self-configuration by automatically detecting cable connections and setting up terminal mappings without operator involvement. This eliminates the cognitive load on operators while maintaining connection correctness through automated verification
Solution Approach 2:
The system performs preliminary detection and configuration actions before video signal transmission begins. The detection unit identifies connected cables and the control unit pre-configures switches in the correct states, so that when operation starts, everything is already properly set up
Data Source
AI summary
A video device includes: a first video signal terminal to which a video signal cable for transmitting a video signal is detachably connected; a second video signal terminal which is of the same shape as that of the first video signal terminal, and to which the video signal cable is detachably connected; a detection unit which detects a predetermined state in the first video signal terminal and the second video signal terminal; a first video signal switch which connects the first video signal terminal to either an input unit or an output unit; a second video signal switch which connects the second video signal terminal to either the input unit or the output unit; and a control unit which controls a connection state of the first video signal switch and a connection state of the second video signal switch according to a detection result of the detection unit.