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Method and apparatus for providing positional information on a disk

Inactive Publication Date: 2007-09-11
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the segments of the sector 10 are head and / or media dependent and reduction of these segments is difficult.

Method used

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  • Method and apparatus for providing positional information on a disk
  • Method and apparatus for providing positional information on a disk
  • Method and apparatus for providing positional information on a disk

Examples

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Embodiment Construction

[0016]Referring to the drawings more particularly by reference numbers, FIG. 2 illustrates a hard disk drive 50 which utilizes the method of the present invention. The disk drive 50 includes a disk pack 100 with a plurality of disks 102 that are collectively rotated by a spin motor 104. The spin motor 104 is mounted to a base plate 106. Also mounted to the base plate 106 is an actuator arm assembly 108. The actuator arm assembly 108 includes a number of read / write (R / W) heads 110a-d mounted to corresponding flexure arms 112. The flexure arms 112 are attached to an actuator arm 114 that can rotate about a bearing assembly 116. The assembly 108 also contains a voice coil motor 118 which moves the heads 110a-d collectively relative to the disks 102. There is typically a single head 110a, 110b, 110c, or 110d for disk head side H0, H1, H2 or H3 (not shown), respectively, of the disk pack 100. The spin motor 104, voice coil motor 118 and the R / W heads 110a-d are coupled to a number of ele...

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Abstract

The present invention is a method and apparatus for providing positional information of a disk. The disk has at least one side with a plurality of tracks, each having a first burst in a first servo field and a second burst in a second servo field. The first burst provides a first portion of track position information while the second burst provides a second portion of track position information. When combined, the first and second portions provide a position of a corresponding track. Each track further includes a third and a fourth burst that provides a first portion and a second portion of disk side position information. When combined, the first and second portions of disk side position information provide the disk side position of the disk. Each track also includes a burst that provides the quadrant position of the disk. In one embodiment, the first and second bursts are located on consecutive sectors, and each track includes a servo sector sequence burst with a sector sequence number that identifies the sequence position of the consecutive sectors. The first portion, the second portion and their corresponding sector sequence number in combination provide a position of a corresponding track.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates in general to disk storage systems and more particularly, to a method and apparatus for providing positional information on a disk in a hard drive assembly.[0003]2. Description of the Related Art[0004]Disk drives are magnetic recording devices used for the storage of information. The information is typically recorded on concentric tracks on either surface of one or more magnetic recording disks. To facilitate the storage and retrieval of data in an orderly manner, disks are typically organized in blocks called sectors. These sectors are located on the disk by a set of unique specifiers called cylinder (or track), head (or side) and sector number. The disks are rotatably mounted to a spin motor and information is accessed by means of read / write heads that are mounted to actuator arms which are rotated by a voice coil motor. The voice coil motor is excited with a current to rotate the actuato...

Claims

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Application Information

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IPC IPC(8): G11B5/596
CPCG11B5/59655
Inventor LE, ME VANWEVERS, WILLIAM E.
Owner SAMSUNG ELECTRONICS CO LTD