Patent · US Active

Difference attack protection

US10698988B2 · kind B2 · utility

0Cited by

8References

18Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

David Wachtfogel · Jerusalem, IL
Michal Devir · Jerusalem, IL
Harel Cain · Jerusalem, IL

Key dates

Filing date	Mar 30, 2017
Grant date	Jun 30, 2020
Priority date	—
Expiry date	Sep 6, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04N2005/91357
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

In one embodiment, a method for preventing a difference attack on watermarked video content is implemented on at least one computing device and includes: manipulating values of a set of pixels to embed a forensic watermark in at least one video frame in a video content item, where the manipulating is in accordance with a given magnitude of change in the values, and introducing random noise to the at least one video frame, where the random noise is random noise of the given magnitude.

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