公开(公告)号：US20150015984A1

公开(公告)日：2015-01-15

申请号：US14500226

申请日：2014-09-29

Applicant: LSI Corporation

Inventor： Ming Jin ,  Erich F. Haratsch ,  George Mathew ,  Jongseung Park ,  Timothy W. Swatosh ,  Timothy B. Lund ,  Carl E. Forham

IPC: G11B5/09 ,  G11B20/10

CPC classification number: G11B5/09 ,  G11B5/012 ,  G11B19/045 ,  G11B20/10046 ,  G11B20/10212 ,  G11B20/10462 ,  G11B20/1217 ,  G11B20/1423 ,  G11B2020/10759 ,  G11B2020/1232 ,  G11B2020/1298 ,  G11B2020/183 ,  G11B2020/185 ,  G11B2020/1856 ,  G11B2220/2516

Abstract: Described embodiments provide a method of cancelling inter-track interference (ITI) from one or more sectors read from a desired track of a storage medium. A read channel reads sectors in a desired track of the storage medium. A decoder of the read channel decodes the read sectors, and if the read sectors are incorrectly recovered from the storage medium, selected sectors of a first adjacent track and a second adjacent track are read. An ITI canceller of the read channel estimates ITI in the read sectors of the desired track corresponding to the selected sectors of each adjacent track and subtracts the estimated ITI of each adjacent track from the data for the sectors of the desired track, providing updated sector data. The ITI cancelled data is replayed to the decoder, Which decodes the ITT cancelled data and provides the decoded ITI cancelled data as output of the read channel.

Abstract translation: 所描述的实施例提供了从存储介质的期望轨迹读取的一个或多个扇区消除轨道间干扰（ITI）的方法。 读通道读取存储介质的期望轨道中的扇区。 读通道的解码器解码读扇区，并且如果从存储介质中错误地恢复读扇区，则读取第一相邻轨道和第二相邻轨道的选定扇区。 读通道的ITI消除器估计对应于每个相邻磁道的所选扇区的期望磁道的读扇区中的ITI，并从期望磁道的扇区的数据中减去每个相邻磁道的估计ITI，从而提供更新的扇区数据 。 ITI取消的数据被重播到解码器，解码器解码ITT取消的数据，并将解码的ITI取消的数据作为读取通道的输出。