Instance specific digital watermarks
US7269735B2 · kind B2 · utility
23Cited by
144References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2003 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Nov 9, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/101
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for dynamically applying digital watermarks. Requested content is sent to a security module of a user device. A digital watermark is dynamically determined based at least on instance information about a rendering engine of the user device. The digital watermark is then rendered with the content using the rendering engine of the user device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.