DRM content stream transmission apparatus, method, and transmission and reception system
US9491147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2014 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Jul 19, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A content stream transmission apparatus with reverse traceability comprises a pattern insertion unit dividing the original content in units of segments and inserting at least two patterns to each segment and creating at least two pattern contents; an encryption unit encrypting the at least two pattern contents; a content selection unit selecting one of the at least two pattern contents based on user identification information; and a transmission unit transmitting the selected pattern content to a user device. Therefore, as copyright and leakage tracking information are enabled to be inserted into the contents in real-time, the present invention not only provides security-enhanced contents but also services real-time content streaming services.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.