Title :
A novel way of formatting to accommodate variations in heads and media
Author :
Jackson, Bruce ; Knowles, Vernon ; Wilcox, Roger
Author_Institution :
Hewlett-Packard Co., Boise, ID, USA
fDate :
11/1/1988 12:00:00 AM
Abstract :
A novel way is presented for formatting servo code so that one can use a head manufacturer´s complete process distribution for track width, without any compensation circuitry, in a high-tack-density disk drive. It is shown how this approach to servo writing has been used with minimonolithic heads to reduce the servo gain variations on an 8-in drive and in a 5-1/4-in product with thin-film heads. Future work needed for the next generation of drives is discussed
Keywords :
hard discs; magnetic heads; servomechanisms; 5.25 in; 8 in; compensation; formatting; heads; media; minimonolithic heads; process distribution; servo code; servo gain variations; thin-film heads; track width; Difference equations; Disk recording; Drives; Magnetic heads; Manufacturing processes; Servomechanisms; Signal generators; Thin film circuits; Voltage; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
