Coded data generation or conversion – Digital code to digital code converters – To or from multi-level codes
Reexamination Certificate
2005-05-03
2005-05-03
Tokar, Michael (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from multi-level codes
C341S050000, C369S059110, C369S059230, C375S286000
Reexamination Certificate
active
06888479
ABSTRACT:
In a data processing method of converting (n×m−1)-bit data to multi-level data of m symbols of n bits per symbol, n and m being integers satisfying n≧2 and m≧2, respectively, the m symbols each comprising n-bit data are arranged in m columns in an n×m matrix, with a value of each of the m symbols being set to an even or odd number, by creating the m symbols each including (n−1)-bit data of the (n×m−1)-bit data, arranging the m symbols in the m columns so that the {(n−1)×m}-bit data is arranged in upper-side {(n−1)×m} bits of the n×m matrix, and converting the remaining (m−1)-bit data of the (n×m−1)-bit data to m-bit data so that the m-bit data is arranged in a row in lower-side m bits of the n×m matrix.
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Kadokawa Yuichi
Sakagami Koubun
Shimizu Akihiko
Takatsu Kazunori
Dickstein , Shapiro, Morin & Oshinsky, LLP
Nguyen Khai M.
Ricoh & Company, Ltd.
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