Countermeasures against audio/video content security domain crossing
US9736536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2015 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Nov 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/603
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for preventing circumvention of digital rights management protections on electronic content are provided. A method according to these techniques includes receiving a content stream, obtaining samples from the content stream, generating a histogram based on the samples from the content stream, classifying the content stream as including audio content or non-audio content based on the histogram, and modifying portions of the content stream responsive to classifying the content stream as including non-audio content. The content stream can be modified such that any video content included in the content stream would be rendered unplayable, while audio content included in the content stream remains playable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.