Unlock instant, AI-driven research and patent intelligence for your innovation.

Disk, disk drive system and method of writing servo data on disk

A disk drive, servo data technology, applied in the direction of driving/moving recording head, recording/reproducing/deleting method, instrument, etc., can solve the problems of expensive CMP, inability to fill servo patterns, increase the total cost of the disk, etc.

Inactive Publication Date: 2016-04-27
WESTERN DIGITAL TECH INC
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dip / liquid spin coating process is particularly attractive from a cost and simplification standpoint; however, it typically cannot fill servo-patterned features
One planarization process that can be used to avoid these limitations is chemical mechanical polishing (CMP); however, CMP is relatively expensive and difficult to implement, thus increasing the overall cost of the manufactured disk

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Disk, disk drive system and method of writing servo data on disk
  • Disk, disk drive system and method of writing servo data on disk
  • Disk, disk drive system and method of writing servo data on disk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The drawings and the following description illustrate specific exemplary embodiments of the invention. It will thus be appreciated that those skilled in the art will be able to devise various arrangements which, although not explicitly described or shown herein, embody the principles of the invention and are included within its scope. Additionally, any examples described herein are intended to aid in the understanding of the principles of the invention, and should be construed as not limited to these specifically described examples and conditions. As a result, the invention is not to be limited to the specific embodiments or examples described below, but by the claims and their equivalents.

[0021] figure 1 A simplified top view of a typical disk drive system 100 suitable for including a disk 110 is shown, as exemplarily described herein. In disk drive system 100, a disk 110 is rotatably mounted on a motorized spindle 120. As shown in FIG. A slider 122 on which a re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
etching depthaaaaaaaaaa
Login to View More

Abstract

The present invention relates to magnetic disks, disk drive systems and methods of writing servo data on magnetic disks. Embodiments show patterned servo data that is used to facilitate subsequent servo writing to the disk while allowing the patterned disk to be planarized with a relatively simple planarization process. A disc drive system includes a disc patterned with magnetic lands and non-magnetic grooves. The disk also includes a boot band that may be disposed at the inner diameter of the disk. The lands of the leader tape have varying dimensions and are patterned with servo data of uniform magnetization polarity. The width of the guide strip is narrow enough to support the air bearing surface of the slider. Data tracks are configured circumferentially proximate the leader band. The slider reads the patterned servo data to cause writing of additional servo data in the data track.

Description

technical field [0001] The present invention relates to the field of disk drive systems, and more particularly, to disks having patterned servo regions that assist in aligning a slider with data on the disk. Background technique [0002] Many computing systems use disk drive systems for mass storage of information. Disk drive systems typically include one or more sliders, which include read and write heads. The actuator / cantilever holds the slider above the disk. As the disk rotates, the airflow generated by the rotation of the disk causes the air bearing surface (ABS) of the slider to fly above the disk at a specific height. How high the slider flies depends on the shape of the ABS. As the slider flies on a cushion of air, a voice coil motor (VCM) moves the actuator / cantilever to position the read and write heads over selected tracks of the disk. [0003] Disks consist of data sectors and servo sectors. The servo sector includes servo data, and the servo data is used t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G11B17/056G11B5/09
CPCG11B21/02G11B5/82G11B5/59627G11B5/743G11B5/59633G11B5/59688B82Y10/00
Inventor 托马斯.R.阿尔布雷克特库尔特.A.鲁宾
Owner WESTERN DIGITAL TECH INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com