Process, system, and apparatus for embedding data in compressed audio, image video and other media files and the like
US6748362B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Sep 3, 1999 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Sep 3, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/327
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A novel process and system for enabling the seamless and facile embedding of relatively large quantities of supplemental digital data into pre-prepared digital media files (audio, image, video, 3D, volumetric and multimedia and the like) by compressing such files and encoding them into sets of coefficient representations (preferably frequency-domain coefficient representations) of the pre-prepared media file information, and embedding bits of the supplemental digital data at selected coefficients, preferably, though not exclusively, using the least significant bit of the selected coefficients, and with stenographic encoding processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.