Two-dimensional run-length limited codec with protection words and method for using same
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United States of America Patent
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Feb 17, 2015
Grant Date -
Apr 17, 2014
app pub date -
Dec 2, 2013
filing date -
Jun 3, 2011
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Abstract
The invention provides a two-dimensional run-length limited (RLL) (1,3) code method and apparatus. The codec comprises an encoder and a decoder comprising a data buffer and grouping module, a two-dimensional code word generating module, a two-dimensional word unit page constructing module, a two-dimensional code word write array module, and a protection word stuffing module. The five modules are sequentially connected, and send output through the protection word stuffing module to a two-dimensional data recording device. The decoder comprises a two-dimensional data buffer module, a two-dimensional word unit page constructing module, a one-dimensional data word decoding module, and a one-dimensional data stream assembly module. The five modules are sequentially connected, and send output through the one-dimensional data stream assembly module. The encoding/decoding method and apparatus can solve problems that any binary two-dimensional data array composed of 0's and 1's satisfies two-dimensional (1, 3) RLL constraints in both horizontal and vertical directions.
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