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A Rate 2/3 (1,6) RLL Code

IP.com Disclosure Number: IPCOM000062876D
Original Publication Date: 1985-Jan-01
Included in the Prior Art Database: 2005-Feb-18

Publishing Venue

IBM

Related People

Authors:
Adler, RL Brayton, RK Hassner, M Kitchens, BP [+details]

Abstract

A (1,6) runlength limited (RLL) code is described in which the encoder converts unconstrained data strings into (1,6) RLL constrained strings, where the rate is 2/3. The decoder, having limited error propagation recovers the original data strings. One error in the encoded string can result in no more than eleven errors in the decoded data. (Image Omitted) The coding system for the (1,6) runlength constraint rate 2/3 is as follows: (Image Omitted) In the encoder, both the output function and the next state function depend on an internal state and two data bits, (Image Omitted) In the decoder the output function depends on eighteen constrained bits, (Image Omitted)