International Business Machines Corporation

Hitachi Global Storage Technologies Netherlands B.v.

Blake O Finstad

Scott Arthur Thomas

Louis Joseph Serrano

Mark Delorman Schultz

Satoshi Yamamoto

Gary Allan Herbst

Gregory Michael Frees

Craig N Fukushima

Daniel James Malone, Sr

Jeff J Dobbek

Kishan Kumar Kumbla

Peter Kui Ho

Paul M Cisewski

Kishan K Kumbia

A method and apparatus for providing combined radial and timing multislot self-servowrite propagation is disclosed. Radial bursts are combined with each timing mark and requires only three recovery/read-write spacing allocations per sector. The channel operates without requiring the writing of any bursts between reading radial bursts.

Method and apparatus for providing combined radial and timing multislot self-servowrite propagation

A method and apparatus for providing a marker at the end of the adaptive self-servowrite process for adaptive formatting via the self-servowrite process. The mark is used later in the drive manufacturing process to identify the number of tracks written on the surface and thus determine the appropriate format to use in the drive.

Method and apparatus for providing a marker for adaptive formatting via a self-servowrite process

A method, apparatus, and an article of manufacture for calibrating a position error signal for controlling the position of a read transducer with respect to a storage media having positioning information written at a location thereon. In one embodiment, the invention is embodied in a method comprising determining a relationship between a read transducer position and the positioning information by measuring the positioning information while passing the read transducer across the location, determining a measured position error signal from the measured positioning information, and computing a relationship between the measured position error signal and the read transducer position.

Position error signal calibration using measured bursts

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San Juan Bautista, CA, United States of America

Blake O Finstad