Coded data generation or conversion – Digital code to digital code converters – Adaptive coding
Reexamination Certificate
2007-10-09
2007-10-09
Mai, Lam T. (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
Adaptive coding
C341S050000
Reexamination Certificate
active
11414309
ABSTRACT:
An encoder suppresses effectively the high-frequency components of data to be transmitted by decreasing the changing points of serial data, thereby suppressing EMI. A changing-point counter counts changing points of n-bit data (n: a positive integer) to generate a counting result, where values of adjoining bits change at each of the changing points. The changing-point counter outputting a discrimination bit which is true when the counting result exceeds a predetermined value. A code converter converts the n-bit data in such a way that bits of the n-bit data located at predetermined positions are inverted when the discrimination bit is true. A parallel-to-serial converter converts (n+1)-bit data to a (n+1)-bit serial code, the (n+1)-bit data being generated by adding the discrimination bit to an output of the code converter.
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Mai Lam T.
NEC Electronics Corporation
Young & Thompson
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