Method for combining transfer functions with predetermined key creation
US6598162B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Mar 24, 1998 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Mar 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.