Coded data generation or conversion – Digital code to digital code converters – To or from minimum d.c. level codes
Reexamination Certificate
2006-02-07
2006-02-07
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from minimum d.c. level codes
C341S056000, C341S057000, C341S059000, C375S219000, C375S286000, C375S287000, C375S295000, C375S298000, C375S316000
Reexamination Certificate
active
06995694
ABSTRACT:
Methods, software, circuits, architectures, and systems for encoding, decoding and error checking/correcting information, particularly pulse amplitude modulated information. The present invention enjoys particular advantage when used to encode x-unit sequence values of N-ary information into y-unit sequence values of M-ary information and to decode y-unit sequence values of M-ary information into x-unit sequence values of N-ary information, where Nx<My(and particularly where Nx<My, but Nx>My−M). The present invention advantageously provides a straight-forward mechanism for coding information that enables one to take advantage of coding overhead (e.g., unused states in the encoded, transmitted sequence) to accomplish other coding objectives, such as conforming to coding constraints, reducing transmission errors (or increasing the likelihood of successfully correcting such errors), dc balancing the coded information, and under certain conditions, even reducing power consumption.
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John G. Proakis; Digital Communications, Fourth Edition; 2001 by The McGraw-Hill Companies, Inc.; New York; pp. 1-3, no month.
Cheong Kok-Wui
He Runsheng
Jean-Pierre Peguy
Marvell International Ltd.
Nguyen Khai M.
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