Audio Recording Buffering for Crash Recovery and Low Data Loss
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Solution Overview
Problem
Existing audio recording systems face issues with audio loss and computational inefficiencies, particularly in managing audio data storage and recovery from application crashes.
Innovation Solution
An audio recording apparatus utilizing a multi-buffer approach with a minimum loss definition buffer and a storage latency reduction buffer, performing parallel write operations to minimize data loss and optimize storage efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio data is continuously written to storage without buffering, then storage latency is reduced, but audio loss occurs during application crashes or system failures
Solution Approach 1:
The patent divides audio data into segments and uses multiple buffers (primary buffer, secondary buffer, tertiary buffer) to store different portions of the audio data. This segmentation ensures that even if one buffer fails, other buffers contain recoverable audio data, reducing both storage latency and audio loss during crashes.
Solution Approach 2:
The patent implements preliminary buffering of audio data before final storage. The primary buffer captures audio data immediately, the secondary buffer provides a backup copy, and the tertiary buffer stores additional recovery data. This preliminary action ensures that audio data is already prepared and stored in multiple locations before any crash occurs, minimizing recovery time and data loss.
2Reliability
If multiple buffers are used to prevent audio loss, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent introduces a buffer manager as an intermediary component that handles all operations related to the multiple buffers (primary, secondary, tertiary). The buffer manager coordinates data transfer between buffers, manages memory allocation, and handles crash recovery processes. This intermediary abstraction simplifies the overall system architecture by centralizing buffer management logic, making the complex multi-buffer system easier to implement and maintain.
3Reliability
If frequent audio file storage operations are performed, then audio loss is minimized, but computational overhead increases
Solution Approach 1:
The patent performs preliminary buffering of audio data in memory before writing to storage. By maintaining audio data in the primary buffer and only writing to storage when necessary (e.g., on crash or periodic intervals), the system reduces the frequency of storage operations while still ensuring data integrity. This preliminary action eliminates the need for continuous storage operations, significantly reducing computational overhead.
Solution Approach 2:
The patent uses buffer copying as an intermediate step between audio capture and final storage. Instead of directly writing audio data to storage files, the system copies data into buffers first. This copying mechanism allows for more efficient batch processing and reduces the number of individual storage operations required, improving computational efficiency while maintaining data integrity.
Data Source
AI summary
The present disclosure provides an audio recording apparatus comprising at least one processor and a memory storing instructions that, when executed by the processor, cause the apparatus to receive audio data, write a minimum loss segment of the audio data to a minimum loss definition buffer, and execute a parallel write operation upon completing the writing of the minimum loss segment to the minimum loss definition buffer. The parallel write operation comprises writing the minimum loss segment to a minimum loss segment recovery file and writing the minimum loss segment to a storage latency reduction buffer. The apparatus provides efficient audio recording while minimizing potential data loss through the use of multiple buffers and parallel write operations.