Tynax ~ Patent Library

Patent for Sale:

End-to-End Video Verification    

Verification of live or recorded video transmission using per-frame luminance pattern of the surveyed scene vs. monitor.


Video surveillance systems transitioning to use digital packet network and IT computer technologies are increasingly vulnerable to attacks, and may be compromised in a variety of ways, some leveraging known weaknesses of the underlying network and server platforms.

The invention discloses methods of monitoring the integrity of the video system end-to-end, i.e. from the optical domain in front of the camera and to the picture displayed on the security monitor, so that if the video system is compromised in any way, including in the digital, analogue or optical domains, the verification system would raise an alert indicating that the video system has been compromised.

The method proposed a controller that is eternal to the video system, and on one hand is able to manipulate the lighting of the surveyed scene, while on the other hand monitors the luminosity of the connected monitors by measuring their current consumption. During normal operation, the illumination change pattern of the surveyed scene will be reflected in proportional (or inversely proportional) current consumption changes in the monitor, with a reasonably constant delay. A loss of the above relationship would be an indication that the video system has been compromised, and that the monitor no longer accurately represents the surveyed scene.

The invention also discloses a method of similarly verify that a recorded video footage is an accurate depiction of a surveyed scene, and a method of verifying that a recorded video is indeed played out on a monitor.

Primary Application of the Technology

The technology is aimed at physical security provisioning of high-value targets, where the video system itself is likely to become a target, where the attackers may attempt to disable video signal transmission e.g. by re-routing the video monitor to a rogue source, or illicitly modifying the video system software to compromise the system integrity and conceal an in-progress incident from the security personal on duty at the security monitor.

Competitive Advantage

The invention is an original idea, without precedence in the industry, and provides an additional layer of security where the security of the video system itself is insufficient for the target value or risk level involved. In can be introduced to any digital or analogue security CCTV system in a new installation or a retroffit.

The seller may consider selling these patents individually.

Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 348: Television

Generating, processing, transmitting or transiently displaying a sequence of images, either locally or remotely, in which the local light variations composing the images may change with time.

Subclass 143: Observation of or from a specific location (e.g., surveillance)
Subclass 152: Intrusion detection
Subclass 159: Plural cameras