Display Audio Output Device Selection via Identifier Matching
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Solution Overview
Problem
The unpredictable connection speeds of external audio output devices when a display apparatus powers on or off lead to inconsistent sound output, resulting in a poor user experience due to the random selection of sound output devices based on connection time.
Innovation Solution
A method for selecting an audio output device involves saving the current sound output device's identifier before power off, disconnecting other devices, and upon power on, monitoring connections to ensure the saved device is reconnected and prioritized as the current sound output device, maintaining consistency in sound output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the sound output device is selected based on connection speed during power on, then the device can quickly respond to power on, but the sound output becomes inconsistent and unpredictable
Solution Approach 1:
The system performs preliminary action by saving the identifier of the current sound output device before power cutoff. This allows the device to recall and prioritize reconnection to the same device after power on, ensuring consistent sound output while maintaining quick response. The identifier is stored in memory before disconnection occurs.
Solution Approach 2:
The system implements feedback by monitoring the connection status of audio output devices during power on and comparing the connected device's identifier against the saved identifier from before power cutoff. This feedback mechanism ensures the system can detect when the original device reconnects and prioritize it, maintaining sound output consistency.
2Adaptability or versatility
If multiple audio output devices are supported, then user experience for sound effects is enhanced, but device selection complexity increases
Solution Approach 1:
The system extracts the identifier information of the current sound output device and separates it from the complex device management process. By saving only the essential identifier before power cutoff and using it for quick matching after power on, the system simplifies device selection while maintaining support for multiple audio output devices.
Solution Approach 2:
The system performs preliminary action by pre-saving the sound output device identifier before power cutoff. This eliminates the need for complex real-time decision-making during power on, as the system already has the target device information stored and can quickly restore the previous audio output configuration.
3Ease of operation
If the sound output device is selected based on connection time, then the system can automatically adapt to available devices, but the user experience deteriorates due to random device selection
Solution Approach 1:
The system uses feedback by continuously monitoring which audio output device connects during power on and comparing its identifier against the saved identifier. This allows the system to automatically adapt to device availability while ensuring consistent user experience by prioritizing reconnection to the previously used device when it becomes available.
Solution Approach 2:
The system performs preliminary action by storing the preferred sound output device identifier before power cutoff. This pre-stored information guides the automatic device selection process after power on, ensuring that the system adapts to available devices while maintaining consistent user experience by preferring the previously configured device.
Data Source
AI summary
Disclosed are a method for selecting an audio output device and a display apparatus. The method includes: in response to a power cutoff command, saving a first device list and performing a first set of operations associated with the power cutoff command; while the display apparatus is in a power off state, receiving a power on command; in response to the power on command, performing a second set of operations associated with a power on process; in response to a first audio output device having connected with the display apparatus, determining whether a first identifier of the first audio output device is same as the identifier of the current sound output device; and in response to the first identifier of the first audio output device being same as the identifier of the current sound output device, taking the first audio output device as the current sound output device.