Cryptography – Key management – Having particular key generator
Patent
1987-04-02
1988-04-19
Buczinski, Stephen C.
Cryptography
Key management
Having particular key generator
380 19, 380 20, 358 84, H04N 7167
Patent
active
047395109
ABSTRACT:
Audio and control signals are digitized and inserted in the horizontal blanking intervals of the distributed composite television signal. The control signals are in the form of a data stream which includes a header containing group address, sync, and program-related information applicable to all receiving units, and a plurality of portions which are addressable to and contain information applicable to the control of particular individual receiving units in the addressed group. The information in the addressable portions can be altered on a real time basis such that the system operator has direct control over certain functions of individual receiving units from the transmission end.
REFERENCES:
patent: 4225884 (1980-09-01), Block et al.
patent: 4292650 (1981-09-01), Hendrickson
patent: 4388643 (1983-06-01), Aminetzah
patent: 4388645 (1983-06-01), Cox et al.
patent: 4393404 (1983-07-01), Cox et al.
patent: 4394687 (1983-07-01), Hutt et al.
patent: 4424532 (1984-01-01), den Toonder et al.
patent: 4484217 (1984-11-01), Block et al.
patent: 4531020 (1985-07-01), Wechselberger et al.
patent: 4531021 (1985-07-01), Bluestein et al.
patent: 4536791 (1985-08-01), Campbell
patent: 4575755 (1986-03-01), Schoeneberger
"Zeitmultiplex analoger Signal-Komponenten fur das Satelliten-Fernsehen," Funk-Technik 39 (1984), Heft 6, pp. 228-231.
McGowan, Michael J., "Process Bus Protocol Orchestrates Distributed or Centralized Control," Control Engineering, Sep. 1980, pp. 124-132.
Glaab Joseph B.
Horne Donald R.
Jeffers John M.
Mundy S. Wayne
Buczinski Stephen C.
General Instrument Corp.
Koltak Melissa L.
LandOfFree
Direct broadcast satellite signal transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Direct broadcast satellite signal transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct broadcast satellite signal transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2181150