Pre-processed information embedding system
US8745404B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 20, 2012 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Nov 20, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and devices are provided for embedding auxiliary information in a host content in a manner that reduces memory, bandwidth and computational complexity of the embedding and transmission systems. One methodology relates to receiving a set of watermark embedding parameters produced at a pre-processing node by pre-processing the host content. The watermark embedding parameters enable embedding each of a plurality of host content segments with any one of at least two different logical values. To embed the auxiliary information, the host content is modified on a segment-by-segment basis using the set of watermark embedding parameters and in accordance with a control signal that designates one of the at least two logical values for embedding into a selected segment of the host content. The generation of watermark embedding parameters at a pre-processing node reduces storage, transmission and computational complexity of embedding operations that can occur at locations other than the pre-processing node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.