Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-12-15
1997-11-04
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 5, 380 23, 34082531, 34082534, 348 7, 455 31, 455 61, H04N 716
Patent
active
RE0356514
ABSTRACT:
Disclosed is an improved system for the delivery of entertainment and educational programming from a plurality of electronic libraries to a plurality of users. Users actuate a hand operated control device to: review a listing of available programming; enable the delivery of a program from a library; or control the delivery of forwarding and rewinding through the programming, and authorizing the purchase of advertised consumer goods by entering in personal identification numbers. The network of libraries and the paths for delivering the programming stored therein is arranged for optimum transmission efficiency and maximum access capacity. The key idea in optimizing transmission efficiency and access capacity is to recognize that programming can be grouped into different classes, and that not all classes of programs should be stored in all libraries. High demand entertainment programming should be stored and delivered from a central source whereas low demand educational or cultural programming should be stored and delivered from a local neighborhood library where there is a special interest in such programming. The system is intrinsically secure and encryption is not required. Programs are not delivered to any physical address other than that of the ordering user. Apparatus is employed to discourage the unauthorized copying of delivered programming. The system also permits the delivery of conventional cable television signals on a competitive basis. Apparatus is employed that maximizes access capacity and minimizes investment cost.
REFERENCES:
patent: 3504109 (1970-03-01), Spencer
patent: 4381522 (1983-04-01), Lambert
patent: 4518989 (1985-05-01), Yabiki et al.
patent: 4521806 (1985-06-01), Abraham
patent: 4538176 (1985-08-01), Nakajima et al.
patent: 4567512 (1986-01-01), Abraham
patent: 4590516 (1986-05-01), Abraham
patent: 4625235 (1986-11-01), Watson
patent: 4709266 (1987-11-01), Hanas et al.
patent: 4734764 (1988-03-01), Pockock et al.
patent: 4761684 (1988-08-01), Clark et al.
patent: 4763191 (1988-08-01), Gordon et al.
patent: 4802220 (1989-01-01), Marker, Jr.
patent: 4829372 (1989-05-01), McCalley et al.
patent: 4878245 (1989-10-01), Bradley et al.
patent: 4890320 (1989-12-01), Monslow et al.
patent: 4916737 (1990-04-01), Chomet et al.
patent: 4920432 (1990-04-01), Eggers et al.
Bradley Graham C.
Leier Terry L.
Stretten Alton O.
Gregory Bernarr E.
SaskTel
LandOfFree
Secure hierarchial video delivery system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Secure hierarchial video delivery system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secure hierarchial video delivery system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1823705