Coded data generation or conversion – Digital code to digital code converters – To or from run length limited codes
Patent
1997-01-30
1998-07-14
Young, Brian K.
Coded data generation or conversion
Digital code to digital code converters
To or from run length limited codes
H03M 746
Patent
active
057811334
ABSTRACT:
An apparatus encodes data blocks into code blocks, each code block containing more symbols than its respective data block. The apparatus includes a data block latch for receiving individual data blocks and for dividing each data block into two sub-blocks. An encoder receives one of the data sub-blocks and encodes the first data sub-block as a code sub-block. An interleaver, coupled to the encoder and the data block latch, combines the code sub-block with the second data sub-block to produce a code block, such that when the code blocks are concatenated with each other to produce a string of code symbols no more than five consecutive occurrences of a particular code symbol are present in the string of code symbols.
REFERENCES:
patent: 4566105 (1986-01-01), Oisel et al.
patent: 5537112 (1996-07-01), Tsang
Siegel, Paul H., et al., Modulation and Coding for Information Storage, Dec. 1991, pp. 68-86.
Karabed, Razmik, et al., Matched Spectral-Null Codes for Partial-Responser Channels, May 1991, vol. 37, No. 3, pp. 818-855.
Seagate Technology Inc.
Young Brian K.
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