DISK STORAGE DEVICE, DATA REPRODUCING DEVICE, AND DATA REPRODUCING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a disk storage device capable of securing a sufficient error correction function by improving a decoding function to a burst error in data reproducing operation by a recursive decoding method. SOLUTION: A disk drive using a read/write channel 5 including a recursive decoder 55 for performing recursive decoding processing is disclosed. The recursive decoder 55 includes an RLL error detector 552 for detecting a burst error part from an LLR sequence output from a channel decoder 550, and an LLR regulator 551. The LLR regulator 551 regulates to reduce an LLR sequence value corresponding to the detected burst error part. COPYRIGHT: (C)2005,JPO&NCIPI