Ring Buffer Salvage File for Video Data Loss Reduction
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Solution Overview
Problem
When recording video data at high speeds, existing systems face data loss due to buffer overflow during abnormalities, leading to prolonged loss periods, especially with increasing data units and demands for higher speed and larger capacity, which pressures the recording medium.
Innovation Solution
An information processing device with multiple buffers and a file recording processing unit that secures consecutive allocation units as a ring buffer, extracts buffer data at regular intervals, and records it as a salvage file for data recovery, minimizing memory pressure and data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If buffer data is backed up at regular time intervals to shorten loss period, then data loss period is shortened, but recording medium is pressured by backup data
Solution Approach 1:
The patent divides buffer data into multiple segments corresponding to different buffers, and selectively backs up only necessary segments to the recording medium. This segmentation allows the system to reduce the total amount of backup data while still protecting against data loss, thereby shortening the effective loss period without excessively pressuring the recording medium's memory space.
Solution Approach 2:
The system performs preliminary identification of which buffer data segments are critical and should be backed up before the actual backup occurs. By determining in advance what data needs protection and preparing the backup structure beforehand, the system can efficiently back up only essential data at regular intervals, reducing both loss period and memory pressure.
2Productivity
If unit of writing data is increased for higher speed, then recording speed is improved, but data loss impact is amplified when abnormality occurs
Solution Approach 1:
The patent segments the large writing units into smaller buffer-based units for backup purposes. While the main recording operates at high speed with large data units, the backup mechanism divides this into manageable buffer segments that can be selectively backed up. This allows high-speed recording to continue while limiting the impact of data loss to only the unbacked-up buffer segments rather than entire large writing units.
Solution Approach 2:
The system dynamically adjusts the backup frequency and scope based on buffer data characteristics and recording conditions. By changing the parameters of backup operations (such as which buffers to back up and how frequently), the system maintains high recording speed while adapting the backup strategy to minimize data loss impact when abnormalities occur.
Data Source
AI summary
An information processing device includes a plurality of buffers and a file recording processing unit. Different pieces of buffer data (BD) are accumulated in the plurality of buffers. The file recording processing unit secures two or more consecutive allocation units (AU) included in a recording medium as a ring buffer. The file recording processing unit extracts a plurality of pieces of buffer data (BD) each accumulated in one of the plurality of buffers at regular time intervals and records the plurality of pieces of buffer data (BD) in the ring buffer as a salvage file (SF) for data recovery.