Rate-28/30 DC-free RLL code

Details Rate-28/30 DC-free RLL code Rate-28/30 DC-free RLL code

2008-10-13

2009-11-03

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from run length limited codes

C341S058000, C341S068000, C341S069000, C341S094000

Reexamination Certificate

active

07612697

ABSTRACT:
A run-length limited (RLL) encoder includes a block detection module that receives a data block that includes N portions and generates N−1 coding bits indicating whether corresponding ones of N−1 of the N portions of the data block include one of all ones and all zeros, where N is an integer greater than two. A mapping module generates an RLL codeword including N portions comprising bits that are determined by a first mapping table, a second mapping table, bits of the data block and the N−1 coding bits.

REFERENCES:
patent: 2957947 (1960-10-01), Bowers
patent: 3405235 (1968-10-01), Carter
patent: 5933103 (1999-08-01), Kim
patent: 6617985 (2003-09-01), Poeppelman
patent: 7174485 (2007-02-01), Silvus
patent: 7301482 (2007-11-01), Oberg
“K.A.S. Immink—Codes for Mars Data Storage Systesm”—pp. 101-103; and 185-200.
“K.A.S. Immink—Codes for Mars Data Storage Systems”—pp. 221-223.
USPTO Non-Final Office Action mailed Jan. 17, 2008 U.S. Appl. No. 11/657,492, filed Jan. 24, 2007.
Amendment filed May 15, 2008 in response to USPTO Non-Final Office Action mailed Jan. 17, 2008 for U.S. Appl. No. 11/657,492, filed Jan. 24, 2007.

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