H - Electricity – 04 – K
Patent
H - Electricity
04
K
350/20, 325/3
H04K 1/00 (2006.01) H04L 9/00 (2006.01) H04N 7/16 (2006.01) H04N 7/167 (2006.01)
Patent
CA 1203848
MULTI-LAYER ENCRYPTION SYSTEM FOR THE BROADCAST OF ENCRYPTED INFORMATION ABSTRACT OF THE DISCLOSURE A method of controlling the simultaneous broadcast of enciphered digital information signals, for example in a radio or television broadcast environment, to a plurality of subscri- bers provides several levels of enciphering keys. The broadcast digital information signal is in a broadcast common service en- ciphering key and communication between the transmitter and sub- scribers may take place in a box key or in a group enciphering key common to a group of subscribers having a common interest in the reception of broadcast signals of a particular type. Each receiver will decipher the broadcast digital information in a specific service key which is common to that broadcast. The service key may be changed at one or more subscribers by communicating the change in the service key to the subscribers by means of the group enciphering key. Further, the group enci- phering key may be changed at one or more subscribers or new groups may be formed among subscribers by communicating to the subscribers in one or more group enciphering keys. -1-
429345
Bluestein Leo I.
Drake David A.
Jedynak Leo
Simpson Larry W.
Wechselberger Anthony J.
Oak Industries Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
Multi-layer encryption system for the broadcast of encrypted... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-layer encryption system for the broadcast of encrypted..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-layer encryption system for the broadcast of encrypted... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1322810