초록 ▼

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 independe

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.

대표청구항 ▼

[ What is claimed:] [1.] A method for applying digital watermark data to a content signal comprising:receiving a content signal;using z-transform calculations to identify non-deterministic components of said content signal; andencoding carrier signal independent data into said identified non-determi

[ What is claimed:] [1.] A method for applying digital watermark data to a content signal comprising:receiving a content signal;using z-transform calculations to identify non-deterministic components of said content signal; andencoding carrier signal independent data into said identified non-deterministic components of said content signal to create a digital sample stream.