Signal Source Switching Control for Video Playback Consistency
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Solution Overview
Problem
Rapid signal source switching in video playback devices often leads to inconsistency between the locked signal source and the current signal source, causing display issues or crashes.
Innovation Solution
A control method and device that detects the signal source upon receiving a switching command, locks the detected signal, judges whether it corresponds to the current switching command, and sets image and sound settings accordingly to prevent inconsistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rapid signal source switching is performed, then signal source versatility is improved, but system reliability deteriorates due to inconsistency between locked signal source and current signal source
Solution Approach 1:
The patent applies preliminary action by detecting and locking the signal source immediately when a switching command is received, before the actual switching completes. This early locking action establishes a reference state that prevents inconsistency during rapid switching operations, ensuring the locked signal source matches the current signal source.
Solution Approach 2:
The patent implements feedback by continuously monitoring whether the locked signal source corresponds to the current signal source. When inconsistency is detected during rapid switching, the system uses this feedback information to correct the state, ensuring reliability while maintaining switching versatility.
2Measurement precision
If signal locking is performed during rapid switching, then signal source identification accuracy is improved, but processing time increases due to additional locking operations
Solution Approach 1:
The patent performs signal detection and locking as a preliminary action immediately when the switching command is received, rather than waiting for the switching to complete. This approach ensures accurate signal source identification while minimizing additional processing time by integrating the locking operation into the switching workflow.
Solution Approach 2:
The patent applies partial action by performing signal locking only for the specific signal source that is currently being switched to, rather than re-locking all signal sources. This selective approach maintains identification accuracy while reducing unnecessary processing time during rapid switching.
Data Source
AI summary
Disclosed is a control method of source switching, including the following operations of: detecting a source signal when a source switching command is received; locking the detected source signal, when the source signal is detected; judging whether the source regarding the locked source signal is a source corresponding to a currently received source switching command; setting image and sound corresponding to the source and playing the source signal, when the source of the locked source signal is the source corresponding to the currently received source switching command. The present application further discloses a control device of source switching. The control method of source switching can effectively prevent occurrence of inconsistency between the source of the locked signal and the current source during a rapid switching of the source.