Patent ID: 7623318

Claim:
A method for reducing noise in a same-gap, frequency-based servo tape system, comprising: noise calibrating a same-gap, frequency-based servo tape system to generate first and second correlated noise factors; transporting a data tape across a tape head module, the tape head module including a write element and a servo read element; transmitting a data signal to the write element to be written to the tape; receiving a raw servo signal from the servo read element, the raw servo signal including noise from the data signal; separating the raw servo signal into first and second servo signals at frequencies F 1 and F 2 , respectively; filtering the first and second servo signals to generate first and second filtered servo signals, respectively; separating the data signal into first and second data signal at frequencies F 1 and F 2 , respectively; filtering the first and second data signals to generate first and second filtered data signals, respectively; applying the first and second correlated noise factors to the first and second filtered data signals, respectively, to generate first and second correlated noise values, respectively; and subtracting the first and second noise values from the first and second filtered servo signals, respectively to generate first and second noise-compensated servo signals.