Dynamic digital watermark
US9426328B2 · kind B2 · utility
15Cited by
3References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2014 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Aug 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/32352
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Some implementations may include a computer-implemented method for applying at least two digital watermarks to a digital document, the method including: receiving a digital document comprising visual contents; generating a first digital watermark to be visually presented at a first time point; generating a second digital watermark to be visually presented at a second time point, the second digital watermark being different from the first digital watermark and the second time point being different from the first time point; and applying both the first digital watermark and second digital watermark to the digital document t.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.