Apparatus and method for fast data encoding and decoding
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United States of America Patent
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Apr 24, 2012
Grant Date -
Nov 11, 2010
app pub date -
May 4, 2010
filing date -
May 4, 2009
priority date (Note) -
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Abstract
An improved method for encoding and decoding data, such as in a base64 system, uses multiple look-up tables to perform the encoding function and to eliminate or reduce bit-shifting and the bit masks in encoding systems through use of pre-populated look-up tables. One example application is converting between media data that is typically quickly viewable on a media device and ASCII or similar data useful in data transfers, such as email. In specific embodiments, a series of pre-fetch encode and decode tables are constructed and indexed to fetch pre-calculated values to, for example, rapidly encode and decode any number of bit representations into any other bit representations.
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