SIGNAL-CARRYING MEDIUM, SYSTEM, DIBIT RESPONSE PREDICTION METHOD, MEDIUM SYSTEM (CYCLIC DIBIT RESPONSE ESTIMATION METHOD IN MEDIUM SYSTEM USING DATA SET/SEPARATOR SEQUENCE)

摘要

PROBLEM TO BE SOLVED: To efficiently identify a channel dibit response based on a DSS sequence. SOLUTION: A dibit response estimation generator receives a DSS sequence and a DSS read-back sequence, which is a function of channel processing of the DSS sequence by a read channel. The generator generates a cyclic dibit response vector as the functions of the DSS sequence and DSS read-back sequence. Further, the generator generates an error signal as the function of comparison of the DSS read-back sequence and filtering of the DSS sequence based on the cyclic dibit response vector. An unacceptable error signal indicates a need to adjust the cyclic dibit response vector so as to yield acceptable comparison of the DSS read-back sequence with the filtering of the DSS sequence based on the cyclic dibit response vector. COPYRIGHT: (C)2007,JPO&INPIT