Transmitting and processing protected content

Details Transmitting and processing protected content Transmitting and processing protected content

2001-08-24

2010-12-07

Korzuch, William R (Department: 2431)

Cryptography

Video cryptography

Video electric signal modification

C380S210000, C380S227000, C380S239000, C380S240000, C380S242000, C705S051000, C705S052000, C705S055000, C705S058000

Reexamination Certificate

active

07848521

ABSTRACT:
A method for transmission and storing of scrambled content in which the scrambled content is transmitted together with encrypted control words, the control words being used for descrambling the scrambled content, transmitting to a receiver/decoder the scrambled content and encrypted control words, said control words being encrypted by an exploitation key (KG), decrypting said encrypted control words in a removable security module with an exploitation key (KG), said removable security module being received by the receiver/decoder, characterised in that it further includes transmitting usage rules message (URM) to the receiver/decoder (2000), which usage rules (URM) impose usage constraints on the playback of the content stored on a mass storage device encrypting the decrypted encrypted control words and usage rules messages by a local key (KL) to produce encrypted control management messages (CMM) storing said scrambled content and encrypted control management message on the mass storage device of the receiver/decoder.

REFERENCES:
patent: 5224161 (1993-06-01), Daniel et al.
patent: 5796828 (1998-08-01), Tsukamoto et al.
patent: 5845281 (1998-12-01), Benson et al.
patent: 5862299 (1999-01-01), Lee et al.
patent: 5915025 (1999-06-01), Taguchi et al.
patent: 6005631 (1999-12-01), Anderson et al.
patent: 6005938 (1999-12-01), Banker et al.
patent: 6104860 (2000-08-01), Lee et al.
patent: 6289455 (2001-09-01), Kocher et al.
patent: 6292568 (2001-09-01), Akins, III et al.
patent: 6550011 (2003-04-01), Sims, III
patent: 6697489 (2004-02-01), Candelore
patent: 6714650 (2004-03-01), Maillard et al.
patent: 6738905 (2004-05-01), Kravitz et al.
patent: 6789188 (2004-09-01), Epstein et al.
patent: 7023992 (2006-04-01), Kubota et al.
patent: 0 898 425 (1999-02-01), None
patent: 0936774 (1999-08-01), None
patent: 936774 (1999-08-01), None
patent: 2 732 537 (1996-10-01), None
patent: WO 98/43426 (1998-10-01), None
patent: WO 9843426 (1998-10-01), None
patent: WO 99/07148 (1999-02-01), None
patent: WO 99/07150 (1999-02-01), None
patent: WO 99/45711 (1999-09-01), None
patent: WO 99/53689 (1999-10-01), None
patent: WO 00 04688 (2000-01-01), None
“Functional Model of a Conditional Access System”; 8301 EBU Review Technical, No. 266, Winter 1995, Grand-Saconnex, CH; pp. 64-77.

Affiliated with

Also associated with

Rating

Transmitting and processing protected content does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transmitting and processing protected content, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmitting and processing protected content will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4222889