Cryptography – Video cryptography – Video electric signal modification
Patent
1996-12-12
2000-05-30
Hayes, Gail O.
Cryptography
Video cryptography
Video electric signal modification
380 37, 380239, H04L 908
Patent
active
060699566
ABSTRACT:
In a communication network in which data for transmission to a receiver terminal is multiplexed on a time-division basis and scrambled, a communication control apparatus and method for allowing the data to be descrambled at the receiver without fail. A scrambler of the sender apparatus includes a time-division frame monitoring circuit for receiving an unscrambled data stream generated by multiplexing time-division frames for application data and relevant information for transmission to thereby extract information concerning a scramble key, a scramble key manager for managing information concerning the scramble keys, an application data encryption processor for acquiring a scramble key corresponding to the information concerning the scramble key as received from the time-division frame monitoring circuit to thereby scramble the desired time-division frames of the data for transmission by using the scramble key as acquired.
REFERENCES:
patent: 4710921 (1987-12-01), Ishidoh
patent: 5365272 (1994-11-01), Siracusa
patent: 5506903 (1996-04-01), Yamashita
ISO/IEC 11172-1 (see Specification p. 10).
ISO/IEC 13818-1 (see Specification p. 10).
Hayes Gail O.
Hitachi Ltd
Tucker Christopher M.
LandOfFree
Method and apparatus for encrypting multiplexed data streams usi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for encrypting multiplexed data streams usi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for encrypting multiplexed data streams usi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1916752