Apparatus and method for encoding and decoding information in analog signals
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United States of America Patent
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Oct 27, 1998
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N/A
app pub date -
Apr 3, 1996
filing date -
Apr 3, 1996
priority date (Note) -
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Abstract
A method and apparatus for encoding information symbols onto an analog host signal modifies signal peaks of the host signal to fall within predetermined amplitude bands. A set of symbols is defined wherein each symbol corresponds to a defined number of signal peaks or to a particular value of signal peak within a band. An additional information channel may be created by altering polarity changes of signal peaks in accordance with predetermined polarity sequences to represent a second set of defined symbols.
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