Polarity encoded pattern for timing based servo

Details Polarity encoded pattern for timing based servo Polarity encoded pattern for timing based servo

2006-10-31

2006-10-31

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

Reexamination Certificate

active

07130140

ABSTRACT:
Servo tracks for magnetic tape storage are written using two opposite polarities, rather than the one polarity normally used in servo tracks. Timing continues to be performed using only pattern members of like polarity, due to physical restraints, but the use of two polarities allows additional information to be encoded in the pattern more efficiently.

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Barrett et al., “Timing-Based Track-Following Servo for Linear Tape Systems”, IEEE Transactions on Magnetics, vol. 34, No. 4, Jul. 1998, pp. 1872-1877.

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