Secure distribution of media data
US8707448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2010 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Apr 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A technique for distributing media data in a secured fashion that mitigates unwanted or illegal copying/distribution of such data. An initial, degraded version of the media data is sent to one or more recipient(s). After confirming identity of a recipient at a receiving system, a supplemental version of the media data is sent to the receiving system which augments the degraded version such that it can then be played by the recipient(s). The degraded version of the media data has a reduced quality that is obtained by removing portions of the data and filling in the removed portions with dummy data. During a subsequent rebuilding of the media data, a supplemental version of the media data is sent to the receiving data processing system where it is merged/combined with the degraded version to form a copy that corresponds to the original, high-quality version of the media data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.