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Methods and apparatus for defect detection and correction via iterative decoding algorithms
Methods and apparatus for defect detection and correction via iterative decoding algorithms
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机译:通过迭代解码算法进行缺陷检测和纠正的方法和装置
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摘要
In iterative decoding, a data recovery scheme corrects for corrupted or defective data by determining reliability metrics for blocks of decoded data. Block or windowed detectors generate block reliability metrics for data blocks (rather than individual bits) of decoded data using soft information from the regular decoding mode or from new iterative decoding iterations performed during error recovery mode. An error recovery system triggers corrective decoding of selected data blocks based on the block reliability metrics, by for example, comparing the block reliability metrics to a threshold or by selecting an adjustable number of the least reliable data blocks.
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