Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Reexamination Certificate
2008-09-09
2008-09-09
Nguyen, Hoa T. (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
C360S039000, C360S046000, C360S053000
Reexamination Certificate
active
11408825
ABSTRACT:
Various systems and methods for accessing data via a variable polarity head assembly are disclosed herein. As one example, a method for accessing data is disclosed that includes receiving a data set, and sampling the data set using positive synchronization to create one data set and negative synchronization to create another data set. A respective sync mark is identified in each of the data sets, and the identified sync marks are compared. Based at least in part on the comparison of the sync marks, a polarity of the data set is identified. Based on the determined polarity of the data set, the data set may be delivered in a known polarity.
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Viswanath Annampedu and Pervez M. Aziz, “Adaptive Algorithms for Asynchronous Detection of Coded Servo Signals Based on Interpolation,” IEEE Transactions on Magnetics, vol. 41, No. 10, Oct. 2005.
Annampedu Viswanath
Bloss Keith R.
Narielwala Vishal
Neville Roy S.
Agere Systems Inc.
Hamilton DeSanctis & Cha
Mercedes Dismery
Nguyen Hoa T.
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