Patent · US Active

Digital rights management for media streams

US8712045B2 · kind B2 · utility

8Cited by

1References

16Claims

0Family size

Assignee

Microsoft Corporation · US

Inventors

Kedarnath A. Dubhashi · Redmond, US
Majd Bakar · San Jose, US
Douglas Steedman · Mountain View, US

Key dates

Filing date	Jan 7, 2010
Grant date	Apr 29, 2014
Priority date	—
Expiry date	Oct 10, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/603
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

This document describes techniques and apparatuses enabling application of digital rights management (DRM) to media streams. In one embodiment, three license levels are used to protect numerous television channels without undue use of computing resources.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.