公开(公告)号：GB2519708A

公开(公告)日：2015-04-29

申请号：GB201502984

申请日：2013-06-21

Applicant: IBM

Inventor： JUDD KEVIN BRUCE ,  JUSTO ROGER JAVIER ,  BUI NHAN X ,  TAKETOMI TOMOKO ,  NAKAYAMA HIROKAZU

IPC: G11B5/584 ,  G11B15/46

Abstract: A maximum velocity is dynamically determined during a tape drive operation to obtain a statistical standard deviation of a position error signal (PES) that yields an amount of stopwrite (SW) operations that avoids backhitching. The tape velocity is adjusted to the maximum velocity.

公开(公告)号：DE69119018D1

公开(公告)日：1996-05-30

申请号：DE69119018

申请日：1991-09-26

Applicant: IBM

Inventor： JAQUETTE GLEN ALAN ,  JUSTO ROGER JAVIER

IPC: G11B7/005 ,  G11B11/105 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B5/09

Abstract: The present invention relates to apparatus for reading back data signals (60, 62) recorded on a recording medium comprising means for generating a string of data pulses (70, 71) representing the recorded data signals, means for determining the time of occurrence of each data pulse, comparison means for comparing the times of occurrence of successive timing pulses, and output means for generating a readback signal formed from a string of output pulses in accordance with the output of the comparison means. According to the invention is apparatus is characterised in that the output means comprises pulse modifying means for modifying any data pulse (67, 69) the leading edge of which occurs less than a predetermined time after the leading edge of the preceding data pulse (70).