Patent · US Active

System for securing access to data streams

US8755523B2 · kind B2 · utility

0Cited by

27References

23Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Josh Kamins · Ashdod, IL
Stephanie Wald · Ramat HaSharon, IL
Yaacov Belenky · 'Anata, IL
Carmi Bogot · 'Anata, IL
Gabi Ickowicz · Jerusalem, IL
Uri Stroh · Jerusalem, IL
Abraham Wachtfogel · Katzrin, IL

Key dates

Filing date	Nov 16, 2003
Grant date	Jun 17, 2014
Priority date	—
Expiry date	Sep 25, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04N21/835
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method for protecting digital content is described. The method includes receiving compressed encrypted digital content, determining an output format based, at least in part, on all of the following: a user-requested output format; received control information; and a rule determining whether a clear compressed output format is allowedand producing output from the compressed digital content based on a result of the determining, wherein, if the rule does not allow clear compressed output format, the compressed encrypted digital content is provided in a form which prevents production of clear compressed output in the producing step. Related apparatus and methods are also described.

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