公开(公告)号：US20030080882A1

公开(公告)日：2003-05-01

申请号：US10295411

申请日：2002-11-15

Applicant: STMicroelectronics, Inc.

Inventor： Francesco Rezzi ,  Marcus Marrow

IPC: H03M005/06

CPC classification number: H03M13/098 ,  G11B20/14 ,  G11B20/18 ,  H03M13/09

Abstract: A code word includes a first group of data bits and includes code bits that represent a second group of data bits. One embodiment of the code word has a minimum probability of bit transitions among its bits. Another embodiment of the code word includes a parity bit. Unlike conventional codes, a code that includes such a code word can have both a high efficiency and small error propagation. Additionally, by including fewer bit transitions, a sequence of such code words causes less read noise, and thus causes fewer read errors as compared to sequences of known code words. Moreover, the code word can include a parity bit to allow improved error detection as compared to known error-detection techniques. Therefore, such a code word can significantly increase the effective write and read speeds of a disk drive.