公开(公告)号：CA1317370C

公开(公告)日：1993-05-04

申请号：CA577641

申请日：1988-09-16

Applicant: IBM

Inventor： MAKANSI TAREK ,  MELAS CONSTANTIN M ,  PATEL ARVIND M ,  SOUTHER STEVEN H

IPC: G11B5/09 ,  G11B5/012 ,  G11B20/10 ,  G11B20/14

Abstract: METHOD AND APPARATUS USING MULTIPLE CODES TO INCREASE STORAGE CAPACITY To increase storage capacity of a disk storage device, the recording surface of the device is partitioned into a plurality of concentric recording bands, data to be recorded on respective bands are encoded using different run-length-limited codes with the code rate of each band being higher than the adjacent inner band.