Digital data transforming method

Details Digital data transforming method Digital data transforming method

2005-02-22

2005-02-22

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

C341S051000

Reexamination Certificate

active

06859151

ABSTRACT:
A coding transformation method includes the steps of dividing an input data into blocks with the length of 13 bits, where the original data set X includes all 8192 13-bit symbols and 12 filling-bit symbols, and uses 91 printable characters in the output representation of the input data. The output set Y is a sub-set of the direct product R91×R91, with R91 being a set of 91 printable ASCII characters. The reversible coding mapping relationship isin-line-formulae description="In-line Formulae" end="lead"?Base91[x]=(ch1,ch2)=(R91—CH[x/91],R91—CH[x%91])in-line-formulae description="In-line Formulae" end="tail"?where xεX, ch1, ch2εR91. For an input data block less than 13-bits long, n bits are added to the specified side to make it become a complete block with the image of the block of data in the direct product R91×R91.

REFERENCES:
patent: 5389924 (1995-02-01), Ogawa
patent: 5682158 (1997-10-01), Edberg et al.
patent: 5687366 (1997-11-01), Harvey et al.
patent: 5929792 (1999-07-01), Herriot
patent: 0717374 (1996-06-01), None

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