Audio Content Delivery Segmentation for Synchronization
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Solution Overview
Problem
Existing content delivery systems face delays in audio reproduction when content is inputted from external sources, such as optical discs, as they struggle to synchronize audio and video playback across client devices.
Innovation Solution
A content delivery apparatus that differentiates between content requiring real-time reproduction and content that does not, using the WavPack codec to divide audio data into fundamental and extended components, ensuring timely delivery of the fundamental component for real-time content and buffering for non-real-time content to maintain synchronization across client devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If content is delivered using a FIFO device to control read-out amount from hard disc, then synchronous reproduction is achieved at client apparatus, but audio reproduction is delayed compared with video reproduction when content is input from external sources
Solution Approach 1:
The audio data is segmented into fundamental components and extended components. The fundamental components are delivered immediately to client apparatus for real-time reproduction, while extended components are buffered for later delivery. This segmentation resolves the contradiction by separating time-critical audio data from non-critical data, enabling synchronous reproduction without delay.
Solution Approach 2:
The system performs preliminary classification of audio data into fundamental and extended components before delivery. By identifying and prioritizing fundamental components in advance, the system ensures they are delivered immediately for real-time playback, while extended components are prepared for subsequent delivery, thus preventing reproduction delay.
2Reliability
If fundamental component of content is delivered more than once to client apparatus, then real-time reproduction is ensured, but data transmission volume increases
Solution Approach 1:
Audio data is divided into fundamental components (essential for real-time reproduction) and extended components (non-essential). By delivering only fundamental components multiple times when needed, the system ensures real-time reproduction reliability while minimizing overall data transmission volume compared to delivering complete audio data.
Solution Approach 2:
The system applies different delivery strategies to different components of audio data. Fundamental components receive priority delivery with retransmission for real-time reproduction, while extended components are delivered with buffering. This local quality differentiation optimizes the balance between reproduction reliability and data transmission volume.
Data Source
AI summary
A content delivery apparatus includes an external input portion, a content reception portion and a delivery portion. To the external input portion, first content having at least a fundamental component is inputted. The content reception portion receives second content having a fundamental component and an extended component. When delivering the first content, the delivery portion delivers the fundamental component of the first content to a client apparatus more than once.