Cryptography – Particular algorithmic function encoding
Patent
1996-12-20
2000-06-20
Swann, Tod R.
Cryptography
Particular algorithmic function encoding
380 4, H04K 100
Patent
active
060786647
ABSTRACT:
Z-transform calculations may be used to encode (and/or decode) carrier signal independent data (e.g., digital watermarks) to a digital sample stream. Deterministic and non-deterministic components of a digital sample stream signal may be analyzed for the purposes of encoding carrier signal independent data to the digital sample stream. The carrier signal independent data may be encoded in a manner such that it is restricted or concentrated primarily in the non-deterministic signal components of the carrier signal. The signal components can include a discrete series of digital samples and/or a discreet series of carrier frequency sub-bands of the carrier signal. Z-transform calculations may be used to measure a desirability of particular locations and a sample stream in which to encode the carrier signal independent data.
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Cooperman Marc S.
Moskowitz Scott A.
Coddington Trevor Quick
Swann Tod R.
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