Seagate Technology Incorporated

Peter Stuart Harllee, Iii

Edward Charles Gage

Wenzhong Zhu

Mehmet Fatih Erden

Kenneth A Haapala

Walter Richard Eppler

Steven Douglas Granz

Ralph William Cross

Stephanie Hernandez

Ravi Hebbar

Systems and methods are disclosed for dynamically adjusting parameters used during a read operation to reduce stress on a read head. In certain embodiments, an apparatus may comprise a read head configured to read data stored to a data storage medium, and a control circuit that controls a parameter of the read head influencing the read head's ability to accurately read data. The control circuit may be configured to extend the working lifespan of the read head by monitoring a read performance of the read head, and adjusting the parameter to reduce the read performance when the read performance is greater than a first threshold.

Read head stress reduction

In one implementation, the disclosure provides a method comprising detecting one or more areas of a storage medium having a data pattern with a plurality of consecutive bits, where the consecutive bits have the same polarity. The method further comprises encoding additional information on a section of the one or more detected areas, where the section of the one or more detected areas has a signal to noise ratio (SNR) higher than SNR of the other areas of the storage media.

Media storage areal density

Method and apparatus for controlling the position of a control object in a closed loop control system, such as a servo control system used in a data storage device. In some embodiments, spaced apart first and second data tracks are written to a rotatable data recording medium without using repeated runout (RRO) compensation values to correct for RRO error in servo data written to the medium. A third data track is subsequently written so as to be interspersed between and partially overlap the first and second data tracks. The third data track is written using a set of RRO compensation values to correct for the RRO error in the servo data.

Repeated runout (RRO) compensation for alternating tracks in an interlaced magnetic recording system

An implementation of a system disclosed herein provides a method of compensating for a change in write position of a recording head due to a change in an operating condition of the recording head.

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Boulder, CO, United States of America

Peter Stuart Harllee, Iii