Hiding codes in input data
US7412074B2 · kind B2 · utility
17Cited by
200References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2006 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Sep 27, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/327
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to hiding codes in input data. In one embodiment, a method is provided including: obtaining input data associated with image or visual information; selecting portions of the input data to hide a plural-bit code based at least in part on predetermined data; and modifying selected portions of the input data to hide the plural-bit code at least in part on changing one or more values of the input data at or around the selected portions. Other embodiments are described and claimed as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.