Steganographic systems and methods
US7986845B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2009 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Nov 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/328
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to steganographic systems and methods. One claim recites an apparatus including: electronic memory to buffer a compressed digital watermark object, the digital watermark object is a separate object relative to a compressed video object; and an electronic processor. The electronic processor is programmed for: decompressing the compressed video object to yield a decompressed video object, the decompressed video object comprising data representing video picture elements and data representing audio elements; decompressing the digital watermark object to obtain digital watermark data; steganographically hiding the digital watermark data in the data representing video picture elements or in the data representing audio elements to yield digital watermarked video or audio; and rendering the digital watermarked video or audio. Other claims and combinations are provided too.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.