Tape drive apparatus

摘要

A tape drive apparatus (100) has at least one rotary head (106) for reading/writing a track. The track has a number of fragments and each fragment has an identifier. The tape drive apparatus has a position indicator apparatus (116) for providing a signal that indicates a rotational position (124) of the head. The combination of the signal and the identifier unequivocally identifies a fragment within the fragments of a track. This has the advantage that non-unique identifiers can be used for the fragments of a track.