公开(公告)号：DE69904827T2

公开(公告)日：2003-09-25

申请号：DE69904827

申请日：1999-07-01

Applicant: IBM

Inventor： HASSNER AURELIANO ,  HEISE NYLES ,  HIRT WALTER ,  TRAGER MARSHALL

IPC: G11B20/10 ,  H03M5/14 ,  G11B20/14 ,  H03M7/00 ,  H03M7/14 ,  H03M13/00

Abstract: A method and means for reducing high-duty-cycle unconstrained binary signal sequences in storage and communications processes and systems by invertibly mapping such sequences into a (1, k) rate ⅔ RLL codestream constrained to a duty cycle substantially approximating one-third. That is, binary sequences ordinarily mapping into high-duty-cycle RLL-code sequences are either inhibited from repeating indefinitely or excluded.

公开(公告)号：DE69904827D1

公开(公告)日：2003-02-13

申请号：DE69904827

申请日：1999-07-01

Applicant: IBM

Inventor： HASSNER AURELIANO ,  HEISE NYLES ,  HIRT WALTER ,  TRAGER MARSHALL

IPC: G11B20/10 ,  H03M5/14 ,  G11B20/14 ,  H03M7/00 ,  H03M7/14 ,  H03M13/00

Abstract: A method and means for reducing high-duty-cycle unconstrained binary signal sequences in storage and communications processes and systems by invertibly mapping such sequences into a (1, k) rate ⅔ RLL codestream constrained to a duty cycle substantially approximating one-third. That is, binary sequences ordinarily mapping into high-duty-cycle RLL-code sequences are either inhibited from repeating indefinitely or excluded.