Apparatus and method for determining the position of a transduce

Details Apparatus and method for determining the position of a transduce Apparatus and method for determining the position of a transduce

1995-05-10

1997-02-04

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 48, 360 7708, G11B 5596

Patent

active

056005067

ABSTRACT:
A method and system for generating a position signal indicative of the position of a transducer with reference to a fixed reference point on the surface of a disk within a disk drive system. The system is comprised of two major elements. The first element is a disk divided into sectors and has Z data tracks where each sector includes a preamble area that includes a servo band comprised of 0.75*Z consecutive overlapping quadrature servo patterns and gray scale band comprised of 1.5*Z consecutively addressed gray scale areas that have been recorded across all data tracks. The second element is a position generator that generates the position signal from the relative magnitude of each of the four servo bursts of a quadrature servo pattern of the servo band and the gray scale address of the gray scale area of the gray scale band that is read by a transducer when the transducer reads the preamble of a sector.

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