Electronic watermark generating apparatus, electronic watermark verifying apparatus, method of generating electronic watermark, and method of verifying electronic watermark
US8914638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2011 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | May 10, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S50/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
There is provided an electronic watermark generating apparatus including an appliance characterizing information generating unit that generates appliance characterizing information that characterizes an electronic appliance, by using physical data acquired by a sensor that measures characteristics of the electronic appliance, an electronic watermark generating unit that generates, in relation to the appliance characterizing information, electronic watermark information that is used for detecting whether information has been tampered with or not, an embedded position deciding unit that analyzes the appliance characterizing information, and decides an embedded position for the electronic watermark information in the appliance characterizing information, and an electronic watermark embedding unit that embeds the electronic watermark information generated by the electronic watermark generating unit in a position on the appliance characterizing information decided by the embedded position deciding unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.