SYSTEMS AND METHODS FOR DECODING USING RUN-LENGTH LIMITED (RLL) CODES

摘要

A method of decoding a codeword that satisfies a k constraint into output data includes, using a decoder of a hard disk drive system, converting each bit of the codeword in Non-Return-to-Zero format, extracting, from the converted codeword, a plurality of data blocks comprising a first data block and a plurality of remaining data blocks, performing a first analysis on the plurality of data blocks for modifying each of the plurality of data blocks that satisfies a first predetermined criterion, and performing a second analysis on the plurality of data blocks after the first analysis for modifying each of the plurality of data blocks that satisfies a second predetermined criterion to obtain the output data.

主权项

1. A method of decoding a codeword that satisfies a k constraint into output data, the method comprising:
using a decoder of a hard disk drive system,
converting each bit of the codeword in Non-Return-to-Zero (NRZ) format,extracting, from the converted codeword, a plurality of data blocks comprising a first data block and a plurality of remaining data blocks,performing a first analysis on the plurality of data blocks for modifying each of the plurality of data blocks that satisfies a first predetermined criterion, andperforming a second analysis on the plurality of data blocks after the first analysis for modifying each of the plurality of data blocks that satisfies a second predetermined criterion to obtain the output data; and providing the output data to a host computer.