Image Display Audio Signal Segmentation for Bandwidth Management
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Solution Overview
Problem
Conventional image display apparatuses face challenges in transmitting high-quality audio signals to multiple external audio devices simultaneously without exceeding bandwidth limits, leading to deteriorated communication performance due to increased bandwidth usage.
Innovation Solution
The image display apparatus employs a controller to separate entire audio signals into multiple channel signals when connected to two or more external devices, processing and transmitting these channel signals to each device, thereby managing bandwidth usage within allowable limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image display apparatus transmits high-quality audio signals to two or more external audio devices simultaneously, then the audio quality and surround sound effect are improved, but the bandwidth usage significantly increases and exceeds the allowable value
Solution Approach 1:
The patent segments the audio signal transmission by separating different audio channels (front left, front right, back left, back right, center, subwoofer) and selectively transmitting only necessary channel signals to each external audio device based on its spatial position, rather than transmitting all channels to all devices. This reduces total bandwidth consumption while maintaining audio quality.
Solution Approach 2:
The patent applies local quality by assigning different audio channel sets to different external audio devices according to their spatial positions relative to the image display apparatus. Each device receives audio channels optimized for its specific location, providing localized high-quality audio experience without requiring all devices to receive the complete audio signal.
2Adaptability or versatility
If the image display apparatus connects to multiple external audio devices through short-range communication, then the versatility and user experience are improved, but the bandwidth usage exceeds the allowable value and communication performance deteriorates
Solution Approach 1:
The patent segments the audio output by dividing it into distinct channel signals corresponding to different spatial positions. Each external audio device receives only the channel signals appropriate for its position, enabling multiple devices to connect simultaneously with reduced bandwidth requirements compared to transmitting complete audio signals to all devices.
Solution Approach 2:
The patent implements dynamic audio signal distribution where the controller dynamically determines which channel signals to transmit to which external audio device based on real-time spatial position information. This dynamic adaptation allows the system to optimize bandwidth usage while supporting multiple connected devices with varying capabilities and positions.
3Reliability
If the image display apparatus transmits the entire audio signal to each external audio device, then the audio quality is maintained, but the bandwidth usage significantly increases
Solution Approach 1:
The patent extracts and transmits only the necessary channel signals from the complete audio signal to each external audio device based on its spatial position. For example, a device positioned at the front left receives only the front left channel signal rather than all audio channels, extracting precisely what is needed while discarding redundant data transmission.
Solution Approach 2:
The patent applies partial action by transmitting a subset of audio channel signals to each external audio device rather than the complete audio signal. Each device receives partial audio information sufficient for its spatial position, achieving adequate audio quality with reduced bandwidth consumption compared to transmitting excessive (complete) signals to all devices.
Data Source
AI summary
The present disclosure relates to an image display apparatus and a method thereof. The image display apparatus according to an embodiment of the present disclosure comprises: a display; an external device interface configured to perform short-range communication; and a controller configured to: when the number of external devices communicatively connected with the image display apparatus is one, or when a bandwidth usage for the short-range communication is less than a predetermined reference, transmit an entire signal to the one external device, when the number of the external devices is two or more, and the bandwidth usage is greater than or equal to the predetermined reference, acquire a plurality of channel signals from the entire signal; transmit a first channel signal to a first external device among the external devices; and transmit a second channel signal to a second external device among the external devices.