公开(公告)号：US6288857B2

公开(公告)日：2001-09-11

申请号：US76175001

申请日：2001-01-18

Applicant: VICTOR COMPANY OF JAPAN

Inventor： HIGURASHI SEIJI ,  ZENNO YOICHI ,  OHISHI TAKEO

IPC: H04N5/92 ,  G11B5/008 ,  G11B20/10 ,  G11B20/14 ,  H04L25/497 ,  G11B5/09

CPC classification number: G11B20/10055 ,  G11B5/0086 ,  G11B20/10009 ,  G11B20/1403

Abstract: A digital signal recording apparatus includes an amble generator for generating an amble signal representing a bit-sequence amble pattern. The bit-sequence amble patter can be detected and reproduced by a partial-response detection system "PR(1, 0, -1)" as a detected amble pattern having a period of state inversions which is shorter than a period of state inversions in a detected amble pattern corresponding to a recorded amble pattern of alternation of "1" and "0". The amble signal generated by the amble generator and a first digital information signal are combined into a second digital information signal on a time sharing basis. The second digital information signal is recorded on a magnetic recording medium. For example, the bit-sequence amble pattern represented by the amble signal has repetition of six bits of "111000".