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Digital Encoding Scheme With Error Detection

IP.com Disclosure Number: IPCOM000036940D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29

Publishing Venue

IBM

Related People

Authors:
Conway, JL Elliott, PJ [+details]

Abstract

In disk files it is usual to encode digital data, such as guardbands and index, in the servo pattern as well as Servo-ID marks (SIDs) and the Position Error Signal (PES). There are various methods of coding such digital data and it is desirable that the file electronics used to decode the data is simple and low cost. Also important is that errors due to disk defects or electrical noise can be reliably detected, to avoid giving false information to the file servo controller.