Tape servo band with three different pseudo noise sequences

摘要

A tape storage medium comprises a servo band SB along a longitudinal extension x of the tape TP for determining positional information. The servo band comprises a set of servo tracks ST1-6 arranged next to each other. Each servo track of the set contains a pseudo noise sequence PN_A-C of symbols, where the pseudo noise sequences of servo patterns of adjacent servo tracks are different from each other. The set of servo tracks contains at least three servo tracks with different pseudo noise sequences. The waveforms of adjacent servo tracks may be orthogonal to each other in the time domain. The servo patterns may contain additional information such as longitudinal position, manufacturing information or a servo band identifier. A tape head contains a servo reader SR where the width of the reader wSR is at least a width of a servo track wST. A read back signal of the servo reader is used for adjusting a lateral position of a tape head.