Browse Prior Art Database

Method for Microcode Conversion of Logical Sector Addresses to Physical Sector Addresses

IP.com Disclosure Number: IPCOM000045804D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue

IBM

Related People

Authors:
Lowdermilk, DJ [+details]

Abstract

Some types of hard disks are formatted, as part of their manufacturing procedure, with logical sector addresses written on the disk. In order to improve the performance of read or write operations when a track to track switch is to be performed, the logical sector addresses are offset from track to track. This is done to enable a controller reading a sector on one track to switch to an adjacent track and read the next sequential sector without the need of one or more intervening disk revolutions.