Video scene change detection

Details Video scene change detection Video scene change detection

2007-11-06

2007-11-06

Moazzami, Nasser (Department: 2136)

Cryptography

Video cryptography

Video electric signal modification

C380S214000, C380S200000, C380S033000

Reexamination Certificate

active

10274019

ABSTRACT:
A selective encryption encoder consistent with certain embodiments of the invention has vertical and/or horizontal stripes encrypted. In one embodiment, packets are examined in the digital video signal to identify a specified packet type, the specified packet type being packets carrying data representing a video slice wherein the video slice contains a larger amount of data than a threshold (or a subsequent slice). The packets identified as being of the specified packet type are encrypted using a first encryption method to produce first encrypted packets. These first encrypted packets are then used to replace the unencrypted packets in the digital video signal to produce a partially encrypted video signal. The packets of the specified type can also be multiple encrypted and replaced in the data stream to produce a multiple encrypted video data stream.

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