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Circuitry for Performing Error Correction Calculations on Baseband Encoded Data to Eliminate Error Propagation

IP.com Disclosure Number: IPCOM000051822D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-11

Publishing Venue

IBM

Related People

Authors:
Bliss, WG [+details]

Abstract

The circuitry illustrated in the figure modifies the structural relationship (from conventional) between baseband and error correction coding (ECC) such that error correction encoding is performed on data already baseband encoded and possibly error propagating, and the check field thus calculated is baseband encoded with a non-error propagating code (such as MFM) so that many baseband codes with properties desirable for magnetic recording but possibly suffering from error propagation upon decoding can still be used with advanced error correction codes.