Coded data generation or conversion – Digital code to digital code converters – To or from run length limited codes
Reexamination Certificate
2008-07-23
2010-10-12
Young, Brian (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from run length limited codes
C341S058000
Reexamination Certificate
active
07812745
ABSTRACT:
A general purpose of the present invention is to improve a DC-free property with a further reduced circuit scale while satisfying a run-length limit. An RLL/DC-free coding unit coding includes a first RLL coding unit, a first signal processing unit, a second RLL coding unit, and a DC component removal coding unit. The first RLL coding unit generates a first coded sequence by subjecting a digital signal sequence outputted from a scrambler to run-length limited coding. The first signal processing unit performs a predetermined signal processing on the digital signal sequence without changing the number of a plurality of bits contained in the digital signal sequence outputted from the scrambler302. The second RLL coding unit generates a second coded sequence by subjecting the digital signal sequence, which is outputted from the first signal processing unit and on which the predetermined signal processing has been performed by the signal processing unit, to run-length limited coding.
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Esumi Atsushi
Li Kai
Cantor & Colburn LLP
Rohm & Co., Ltd.
Young Brian
LandOfFree
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