Content Output Apparatus Audio Video Synchronization Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing audio signal transmission technologies face challenges in maintaining synchronization between audio and video signals, especially when transmitting real-time audio from a multimedia device like a TV to external speakers, due to transmission delays that increase with distance, affecting the quality of audio reproduction.
Innovation Solution
A content output apparatus with a controller that determines whether an audio signal is related to a video signal and automatically selects an optimal output mode for synchronization, using methods like Wi-Fi Direct for reduced latency, ensuring synchronized audio and video playback across multiple speakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio signal is transmitted to external speakers through wireless network connections, then audio reproduction quality is improved, but transmission delay increases
Solution Approach 1:
The system dynamically adjusts the communication method based on the content type. For video content, it uses Wi-Fi Direct for low latency; for audio-only content, it uses standard Wi-Fi for quality. This dynamic adaptation resolves the contradiction by selecting the optimal transmission mode for each scenario.
Solution Approach 2:
The patent changes the communication parameter (communication method) from fixed to variable. By detecting whether the content includes video, the system switches between Wi-Fi Direct and standard Wi-Fi, thereby optimizing both audio quality and transmission delay for different content types.
2Adaptability or versatility
If audio signal is transmitted via network connections to external speakers, then audio output flexibility is improved, but synchronization between audio and video signals deteriorates
Solution Approach 1:
The system dynamically selects the communication method based on content type detection. When video content is detected, Wi-Fi Direct is automatically chosen to maintain synchronization. This dynamic behavior allows the system to adapt to different content types while preserving audio-video sync for video content.
Solution Approach 2:
The controller acts as an intermediary that detects content type and mediates the selection of appropriate communication methods. This intermediary function ensures that the correct transmission mode is chosen to maintain synchronization for video content while still providing flexibility for audio-only content.
3Ease of operation
If automatic output mode selection is implemented, then user operation simplicity is improved, but device complexity increases
Solution Approach 1:
The system performs self-service by automatically detecting content type and selecting the appropriate output mode without user intervention. The controller autonomously determines whether to use Wi-Fi Direct or standard Wi-Fi based on whether video content is detected, simplifying user operation while managing complexity through automated decision-making.
Data Source
AI summary
A content output apparatus, methods for controlling a content apparatus, and a mobile apparatus are provided. The content output apparatus includes a receiver configured to receive content, a display configured to output a video signal of the content, a speaker configured to output an audio signal of the content, a communicator configured to transmit the audio signal to at least one external speaker, and a controller configured to determine whether the audio signal is related to the video signal, and display a user interface screen for inducing a selection of an output mode which transmits the audio signal to the at least one external speaker with a communication method corresponding to the determination result among a plurality of output modes via the display.