Method and apparatus for data encoding

Details Method and apparatus for data encoding Method and apparatus for data encoding

2007-07-17

2007-07-17

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from nrz codes

C341S070000

Reexamination Certificate

active

11064823

ABSTRACT:
A method and apparatus for data encoding such as 3 to 4 encoding (base64, uuencode etc.) is provided. Bytes of data to be encoded having negative values are made positive while preserving the information to be encoded. The positive values may be manipulated by addition (e.g. to a common store) and bit shifting to efficiently obtain encoded data such as by indexing an encoding alphabet.

REFERENCES:
patent: 6285300 (2001-09-01), Colon-Bonet
patent: 6492918 (2002-12-01), Rezzi et al.
patent: 6542093 (2003-04-01), Colon-Bonet
URL:http://www.rfc-editor.org/rfc/rfc3548. txt> [retrieved on Jul. 28, 2005] *p. 3, line 17-line 24 * *table 1*.
Mikael Grev: “Base64.java” BASE64—2.2.ZIP, [Online] Aug. 7, 2004, XP002338497 Retrieved from the Internet: URL:http://migbase64.sourceforge.net/> [retrieved on.

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