Pre-processed information embedding system
US7644282B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2005 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Jan 26, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods are provided for embedding auxiliary information in a host content signal which reduce the memory, bandwidth and computational complexity of the embedding and transmission systems. In one embodiment, a first reduced-scale signal is produced which corresponds to the host content embedded with a first logical value and producing a second reduced-scale signal corresponding to the host content embedded with a second logical value. A first set of segments from the first reduced-scale signal may be combined with a second set of segments from the second reduced-scale signal in a pre-defined manner to produce a composite embedded host content. Thus the storage and transmission requirements of the watermarking system are reduced to having to deal with only the original content plus two reduced-scale signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.