Display Device Automatic Video Signal Switching via Detection
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Solution Overview
Problem
Existing display devices with multiple video input terminals require cumbersome operation to switch between inputs, often resulting in unnecessary switching and potential errors, especially when some terminals do not receive signal inputs or are in power-saving mode, leading to incomplete functionality and user inconvenience.
Innovation Solution
A display device equipped with multiple input units, connection units, a switching unit, and detection units that automatically detect signal presence and control video signal switching, allowing seamless switching and display based on detected signals, thereby reducing user effort and preventing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic skipping of non-signal input terminals is implemented, then switching operation is simplified, but input switching becomes impossible when no signal is being input
Solution Approach 1:
The display device automatically detects signal presence at each input terminal and performs autonomous switching to terminals with active signals, eliminating the need for manual trial-and-error switching by users. The system serves itself by monitoring input states and making intelligent switching decisions without user intervention.
Solution Approach 2:
The display device implements a feedback mechanism by continuously monitoring signal presence at each input terminal and using this information to control switching behavior. The detection unit provides feedback about signal status to the control unit, which then determines whether to switch to that terminal, ensuring switching only occurs when appropriate.
2Reliability
If all video input terminals are sequentially switched, then all terminals are checked, but switching becomes cumbersome when some terminals do not receive signal input
Solution Approach 1:
The display device performs preliminary detection of signal presence at each input terminal before attempting to switch to that terminal. By checking signal status in advance, the system avoids unnecessary switching operations to terminals that are guaranteed to be inactive, streamlining the user experience while maintaining thorough signal verification.
3Productivity
If video input terminals not in use are set, then switching efficiency is improved, but error handling becomes complex when signals are input in error
Solution Approach 1:
The display device automatically manages the complexity of monitoring and responding to signal presence at each input terminal without requiring user configuration or intervention. The system self-adjusts its switching behavior based on real-time detection results, eliminating the need for users to manually set or manage terminal availability while maintaining high switching efficiency.
Data Source
AI summary
A display device includes: a first detection unit that detects an external signal from a second external device via a second connection unit, and outputs a first detection result indicating presence of an external signal; and a control unit that determines whether the second external device is connected with a second input unit based on the first detection result, and performs control so that a video signal to be supplied to a display unit is switched from a first video signal to a second video signal to cause the display unit to display an image based on the second video signal in a case where the control unit that determines that the second external device is connected with the second input unit.