Location dependent maximum transition run length code with alter

Details Location dependent maximum transition run length code with alter Location dependent maximum transition run length code with alter

1998-03-31

2000-01-04

Young, Brian

Coded data generation or conversion

Digital code to digital code converters

To or from run length limited codes

341 50, H03M 746

Patent

active

060114975

ABSTRACT:
An encoder and a method of encoding successive data words into successive code words having alternating code word lengths. Each code word has a plurality of bit locations. A first maximum transition run constraint is imposed on a first set of the bit locations, wherein each bit location in the first set is spaced S bit locations apart from one another, and S is an integer greater than one. A second maximum transition run constraint, which is different than the first maximum transition run constrain, is imposed on a second set of the bit locations, wherein the second set comprises each of the bit locations that are not in the first set. The alternating code word lengths and the value of S are defined such that corresponding bit locations in successive code words have the same maximum transition run constraint.

REFERENCES:
patent: 5341386 (1994-08-01), Shimoda et al.
patent: 5451943 (1995-09-01), Satomura
patent: 5502735 (1996-03-01), Cooper
patent: 5553169 (1996-09-01), Mizuoka
patent: 5576707 (1996-11-01), Zook
patent: 5731768 (1998-03-01), Tsang
patent: 5859601 (1999-01-01), Moon et al.
B. Brickner and J. Moon, "A High-Dimensional Signal Space Implementation of FDTS/DF", IEEE Transactions on Magnetics, Sep. 1996, pp. 3941-3943.
B. Brickner and J. Moon, "Maximum Transition Run Codes for Data Storage Systems", IEEE Transaction on Magnetics, Sep. 1996, pp. 3992-3994.

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