Head positioning servo and data channel for HDD's with multiple spindle speeds

Authors
Yada, H Ishioka, H Yamakoshi, T Onuki, Y Shimano, Y Uchida, M Kanno, H Hayashi, N
Citation
H. Yada et al., Head positioning servo and data channel for HDD's with multiple spindle speeds, IEEE MAGNET, 36(5), 2000, pp. 2213-2215
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
36
Issue
5
Year of publication
2000
Part
1
Pages
2213 - 2215
Database
ISI
SICI code
0018-9464(200009)36:5<2213:HPSADC>2.0.ZU;2-8
Abstract
For hard disk drives (HDD's) having multiple disk rotational speeds, a new data channel and head positioning servo system was developed. Head position ing performance at the low spin-speed was preserved by using a synchronous servo scheme with more servo areas than the conventional scheme. Using a co mmon physical disk format, sufficient servo performance and the same data r ecording density of 1.3 Gbit/inch(2) were obtained on two 2.5 inch prototyp e HDD's with a low spin-speed 37.5 Hz and a high spin-speed of 75 Hz, Disk interchangeability was also confirmed.