Method and device for transcoding N-bit words into M-bit...

Details Method and device for transcoding N-bit words into M-bit... Method and device for transcoding N-bit words into M-bit...

2008-07-08

2008-07-08

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C341S050000, C341S051000, C341S095000, C708S495000, C708S513000

Reexamination Certificate

active

07397399

ABSTRACT:
The present invention concerns a method for transcoding a N bits word into a M bits word with M<N. The invention is applicable in various fields and more particularly in the display field. The method comprises the following steps:-breaking down the N bits word into an exponent part and a mantissa part having each a size which varies according to the value of said N bits word, the size of the mantissa part increasing with the value of said N bits word, and -encoding the exponent part of the N bits word into a variable number of bits A and removing, if need be, least significant bits of the mantissa part in order to obtain a mantissa with a variable number of bits B, with A+B=M.

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S. Weitbruch et al: “New Metacode Coding Concept for Improving PDP Gray-Scale Quality”, Journal of the Society for Information Display, Society for Information Display, San Jose, US, vol.11, No. 3, 2003, pp. 485-491.
Search Report dated May 18, 2005, 3 pages.

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