Rollable Display Speaker Duct Switching for Stable Sound Quality
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Solution Overview
Problem
Existing audio technologies in electronic devices with flexible or rollable displays struggle to maintain optimal sound quality as the shape changes, as they typically rely on a single sound radiation pipe passage that is not adaptable to varying configurations.
Innovation Solution
The electronic device incorporates multiple sound radiation pipe passages and a processor that adjusts audio signal characteristics based on the detected movement of the display, ensuring consistent sound quality across different shapes and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single sound radiation pipe passage is used, then the device structure is simple, but sound quality cannot be maintained when the device shape changes
Solution Approach 1:
The patent divides the sound radiation system into multiple independent pipe passages (first pipe passage, second pipe passage, third pipe passage) instead of using a single passage. Each passage can be independently controlled to adapt to different device shapes, thereby maintaining sound quality without requiring the entire system to be complex and reconfigurable.
Solution Approach 2:
The patent implements dynamic selection of pipe passages based on the detected movement distance of the flexible display. The processor dynamically determines which pipe passage to use (first, second, or third) according to the current device shape, enabling the system to adapt to changing conditions without physical reconfiguration.
2Adaptability or versatility
If the sound radiation pipe passage changes, then it can adapt to different device shapes, but audio signal characteristics change and sound quality becomes inconsistent
Solution Approach 1:
The patent employs a feedback mechanism where the processor continuously detects the movement distance of the flexible display and uses this information to determine the appropriate pipe passage configuration. This closed-loop control ensures that the sound radiation system consistently adapts to the current device shape, maintaining stable sound quality across different configurations.
Solution Approach 2:
The patent changes the operational parameters of the sound radiation system by selecting different pipe passages based on the device shape. Instead of physically modifying the pipe passages, the system changes which passage is active, thereby adapting to different shapes while maintaining consistent sound quality through parameter selection rather than structural change.
3Adaptability or versatility
If a flexible display is used to enable shape changes, then the device can adapt to different configurations, but the audio output quality varies with shape changes
Solution Approach 1:
The patent performs preliminary action by pre-establishing multiple pipe passages (first, second, and third) that correspond to different device shapes. When the flexible display changes shape, the system can immediately switch to the pre-configured appropriate pipe passage without delay or degradation in audio quality, ensuring reliable and consistent performance across all configurations.
Data Source
AI summary
An electronic device is provided. The electronic device includes a first housing, a second housing coupled to the first housing, a speaker disposed in the first housing and outputs an audio signal, a flexible display disposed in the first and second housings, and in which a size of a visual area can be expanded according to the movement of the second housing, a first duct line formed in the first housing, a second duct line formed at a position corresponding to the first duct line, and is formed in the second, a third duct line connected to the first duct line, and is formed in the second housing, and a processor, operatively connected to the speaker and the flexible display, configured to sense the moved distance of the second housing with respect to the first housing, and correct the characteristics of the audio signal based on the sensed moved distance.