| 摘要 |
Applicants' invention includes an apparatus and method to read and/or write information from and/or to a moving magnetic tape using a tape head disposed adjacent that magnetic tape, where that tape head includes (N) servo sensors and where that magnetic tape includes (N) servo edges. Each such servo edge comprises an interface between a first recorded signal and a second recorded signal, where each of the (N) servo sensors detects that first recorded signal and that second recorded signal. Applicants' method first calculates (N) target PES signals, where the (i)th target PES signal is determined for the (i)th servo sensor. Applicants method then provides (N) measured PES signals during a read/write operation, where the (i)th servo sensor provides the (i)th measured PES signal. Applicants' method then determines deviation Di, where Di comprises the absolute magnitude of the difference between the (i)th measured PES signal and the (i)th target PES signal. Applicants' method then assigns a weight factor WFi for the (i)th measured PES signal, where WFi is inversely proportional to Di. Applicants' method then forms (N) weighted PES signals, where the (i)th weighted PES signal is formed by multiplying the (i)th weight factor times the (i)th measured PES signal. Applicants' method then averages those (N) weighted PES signals to form a Composite PES signal. That Composite PES signal is used to position the tape head during the read/write operation.
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