Method of encoding information using a position-based encoding scheme
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United States of America Patent
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-
Oct 9, 2001
Grant Date -
N/A
app pub date -
Nov 25, 1997
filing date -
Jun 1, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Data sequences comprised of figure-coded units, such as text comprised of ASCII characters, are encoded into another data entity, such as a pixel based image. The encoding implements a positionally-based encoding scheme in which values of the data entity (basic matrix) upon which the data sequences are to be encoded is used. The position for values to be changed in the basic matrix are determined by a reversible function, and the encoding value that these values are changed by may be 1, another arbitrary number, or determined by a formula. The counterpart to the reversible function is known by an intended receiver of the encoded data for decoding purposes. The basic matrix may be generated utilizing a suitably complex function, such as a chaos function, with parameters known only to the sender and receiver.
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