Video Data Processing Apparatus Block Indexing Error Correction
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Solution Overview
Problem
Video data processing apparatuses face issues with garbled data during writing and reading, where error correction codes cannot entirely correct large amounts of corrupted data, leading to incorrect playback and data loss, especially in transfer channels.
Innovation Solution
A video data processing apparatus that includes a file receiver, analyzer, recorder, error correction code addition module, and index detector, which divides data into blocks with added index information, uses error correction codes, and detects errors through fixed pattern data, enabling effective error detection and correction even with large errors, minimizing data loss and ensuring accurate playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If error correction codes are added to data files, then data accuracy is improved, but device complexity increases
Solution Approach 1:
The patent divides the data file into multiple data blocks and adds index information to each block. This segmentation allows the system to manage and process data in smaller units, making the error correction mechanism more manageable while maintaining high reliability. Each data block can be independently corrected without affecting the entire file.
Solution Approach 2:
The patent adds index information to each data block before recording, which includes metadata about the block's position and characteristics. This preliminary action enables the playback device to quickly locate and verify specific blocks without scanning the entire file, reducing the complexity of error detection and correction operations during playback.
2Reliability
If data blocks are divided with index information, then error detection capability is improved, but data processing time increases
Solution Approach 1:
Index information is added to each data block during the recording phase, including metadata that describes the block's position and characteristics. This preliminary preparation allows the playback device to quickly navigate to specific blocks using the index, significantly reducing the time required for error detection and correction during playback without requiring time-consuming scans of the entire file.
Solution Approach 2:
The patent creates a simplified index structure that copies essential metadata about each data block (such as position and size information) into a separate index table. This copying mechanism allows the playback device to reference the index rather than scanning the entire file, reducing processing time while maintaining comprehensive error detection capability.
3Reliability
If fixed pattern data is added to index information, then data integrity is improved, but storage space increases
Solution Approach 1:
The patent adds fixed pattern data only to the index information portion of each data block, rather than throughout the entire data file. This localized approach ensures that data integrity can be verified at the block level without requiring redundant data to be stored across the entire file, minimizing the increase in storage space while maintaining high reliability.
Solution Approach 2:
The patent uses fixed pattern data with specific bit patterns (such as all zeros or all ones) that can be quickly recognized and verified. These parameterized patterns are designed to be minimally invasive to storage space while providing robust integrity checking capability. The fixed patterns serve as efficient markers that can be detected with minimal computational overhead.
Data Source
AI summary
According to one embodiment, a video data processing apparatus includes a file receiver, an analyzer, and a recorder. The file receiver receives a data file. The analyzer analyzes the data file, divides the data file into first data blocks of first data units, and adds index information to each of the first data blocks. The index information includes particular verification data located at a first position in the index information, and management information for playback of the each first data block. The recorder records each of the first data blocks with the index information.