Method for combining transfer functions with predetermined key creation
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United States of America Patent
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Feb 16, 2010
Grant Date -
May 6, 2004
app pub date -
Jun 25, 2003
filing date -
Mar 24, 1998
priority date (Note) -
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Abstract
A method for combining transfer functions with predetermined key creation. In one embodiment, digital information, including a digital sample and format information, is protected by identifying and encoding a portion of the format information. Encoded digital information, including the digital sample and the encoded format information, is generated to protect the original digital information. In another embodiment, a digital signal, including digital samples in a file format having an inherent granularity, is protected by creating a predetermined key. The predetermined key is comprised of a transfer function-based mask set to manipulate data at the inherent granularity of the file format of the underlying digitized samples.
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