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Class Information
Number: 341/74
Name: Coded data generation or conversion > Digital code to digital code converters > To or from nrz (nonreturn-to-zero) codes > To or from double density code
Description: Subject matter for converting digital signals to or from other digital signals where a one is a transition at the end of a bit period and a zero is a transition at the center of a bit period, except when a zero follows a one, in which case there is no transition in the bit period.

Patents under this class:

Patent Number Title Of Patent Date Issued
7499490 Encoders for block-circulant LDPC codes Mar. 3, 2009
6084535 System and method for generating many ones codes with hamming distance after precoding Jul. 4, 2000
5841379 Method and apparatus for selectively counting consecutive bits Nov. 24, 1998
5710561 Method and apparatus for double run-length encoding of binary data Jan. 20, 1998

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