Method for data preparation and watermark insertion
US6332194A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1998 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Jun 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0064
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for data preparation and watermark insertion. The method includes the step of preparing the data at a first time by manipulating at least one set of the data characteristics for subsequent insertion of a first watermark. In a preferred embodiment of the method of the present invention the method further includes the step of inserting the first watermark by manipulating the set of data characteristics at a second time subsequent to the first time. In still yet another preferred embodiment of the method of the present invention, the method further includes the step of inserting a second watermark at a third time, before, during, or after the first time, by manipulating at least one set of the data characteristics. In a variation of the present invention a method for inserting a watermark into compressed data is provided. The compressed data has sets of data characteristics. The method includes the steps of inserting a watermark by manipulating the set of data characteristics; and optimizing the manipulated data by modifying the compressed data characteristics subject to a set of constraints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.