公开(公告)号：CA2000013C

公开(公告)日：1994-08-16

申请号：CA2000013

申请日：1989-10-02

Applicant: IBM

Inventor： KARP JAMES M ,  ROACH STEVEN W ,  SCHNEIDER RICHARD C ,  WEST STEPHEN C

IPC: G06F11/08 ,  G06F3/06 ,  G11B20/12 ,  G11B20/18 ,  G06F11/00

Abstract: A record medium, such as a magnetic tape, optical disk, magnetic disk, and the like stores data signals and error redundancy signals. Resynchronization signals are interleaved between the recorded signals such that the error redundancy signals are usable to correct signals recorded between such interposed resynchronization signals wherein no error redundancy signals are recorded. Error pointing redundancy signals are recorded between all of the resynchronization signals for pointing to signals in error for enhancing the error correction. Such error pointing signals can be cyclic redundancy check (CRC) signals. Controls for taking advantage of the above-described arrangement are also described. Reframing and clock synchronization controls are also disclosed.

公开(公告)号：CA2112452A1

公开(公告)日：1990-10-28

申请号：CA2112452

申请日：1989-10-02

Applicant: IBM

Inventor： KARP JAMES M ,  ROACH STEVEN W ,  SCHNEIDER RICHARD C ,  WEST STEPHEN C

IPC: G06F11/10