Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2004-04-16
2010-02-23
Abrishamkar, Kaveh (Department: 2431)
Cryptography
Video cryptography
Video electric signal modification
C382S100000, C382S232000, C725S032000
Reexamination Certificate
active
07668312
ABSTRACT:
A process for secured distribution of video sequences according to a digital stream format stemming from an encoding based on a processing by wavelets including frames including blocks containing coefficients of wavelets describing the visual elements, including analyzing the stream prior to transmission to client equipment to generate a modified main stream by deletion and replacement of selected information coding the original stream and having the format of the original stream, and complementary information of any format comprising the digital information coding the original stream and suitable for permitting reconstruction of the modified frames; and transmitting the modified main stream and the complementary information separately from a server to addressed equipment.
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Moyano et al., “Efficient 3D wavelet transform decomposition for video compression,” Digital and Computational Video, 2001. Proceedings of Second international workshop USA, IEEE, Feb. 8, 2001. pp. 118-125.
Medialiving, A New Concept in Data Protection, ISO/IEC JTC 1/SC 29/WGI, No. N2881, Mar. 11, 2003, pp. 1-10.
Caporossi Jérôme
Lecomte Daniel
Abrishamkar Kaveh
Connolly Bove & Lodge & Hutz LLP
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