Patent ID: 6122118
Filing Date: 2000-09-19
Classification: G11B

Abstract:
A magnetic reproducing apparatus for playing back a magnetic recording medium on which digital data have been magnetically recorded through a partial response encoder, comprising:a recording system for reproducing said digital data from said magnetic recording medium;synchronizing signal data detecting means for receiving said digital data from said reproducing system and for detecting a synchronizing signal data part from a reproduced signal data series which has been encoded by said partial response encoder;transmission path characteristics estimating means for modeling an impulse response between a recording system and said reproducing system based on the synchronizing signal data part encoded by said partial response encoder and detected by said synchronizing signal data detecting means, said synchronizing signal data part being used as a reference signal by said transmission path characteristics estimating means; anddecoding means for decoding said reproduced signal data series according to a Viterbi algorithm based on a transmission model produced by said transmission path characteristics estimating means.