Media on demand via peering

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files

Reexamination Certificate

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Details

C705S071000, C725S087000, C725S089000, C369S030800

Reexamination Certificate

active

11171657

ABSTRACT:
A method of protecting media files includes dividing a media file into segments. Each segment is encrypted multiple times with a different encryption key each time. Downloads of the segments are controlled such that different combinations of segments and keys are downloaded. Key bundles are provided to user devices, with each key bundle is a combination of keys only for that user device combination of segments and keys.

REFERENCES:
patent: 5870543 (1999-02-01), Ronning
patent: 6701528 (2004-03-01), Arsenault et al.
patent: 2003/0145093 (2003-07-01), Oren et al.
patent: 2004/0091114 (2004-05-01), Carter et al.
Wayne Chang, “Peer-to-Peer Communication & Entertainment for Mobile PCs”, Jun. 1, 2005, VTF 2005 VIA Technology Forum, all pages (http://www.via.com.tw/en/downloads/presentations/events/vtf2005/vtf05—mp—acegain.pdf).
Hilt, Mauve, Vogel, Effelsberg, “Interactive Media on Demand: Generic Recording and Replay of Interactive Media Streams”, 2001, University of Mannheim, Germany, pp. 593-594 ().
Dawn C. Chmielewski, “File-swapping embraced”, Nov. 24, 2004, The Mercury News, 2 pages (http://www.wurldmedia.com
ews—mercurynews112404.pdf).
John Borland, “P2P start-up gets record label deals”, Nov. 24, 2004, CNET News.com, 1 page (http://www.wurldmedia.com/cnet112404.html).

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