Cryptography – Video cryptography – Copy protection or prevention
Reissue Patent
2000-08-17
2003-02-25
Gregory, Bernarr E. (Department: 3662)
Cryptography
Video cryptography
Copy protection or prevention
C705S057000
Reissue Patent
active
RE038007
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to video data communication in which a limited reproduction right in video data is transferred between a broadcaster and a receiver.
Commonly, video programming is transmitted from a broadcaster to a user via a satellite or cable communications system. In some systems, users are able to request, and broadcasters provide, select video programming through the use of individually addressable decoding receivers. The user's decoder is activated upon receipt of the user's address which is transmitted along with the requested video programming.
The drawback of such systems is that the user is often able to record the requested video programming for later reproduction. This later reproduction occurs without any royalty payment to the broadcaster or other holder of copyrights in the video programming. Further, the recorded video programming can be disseminated by the user to others for additional reproductions without corresponding royalty payments.
OBJECTS AND SUMMARY OF THE INVENTION
An object of the present invention is to provide a system for the transfer between a broadcaster and a user of a limited reproduction right in transmitted data.
Another object of the present invention is to enable a user to request from a broadcaster a particular limited reproduction right in a selected video program.
Yet another object of the present invention is to prevent the reproduction of transmitted data by a user without adequate payment for each reproduction.
In accordance with the present invention, an apparatus for receiving, recording, and reproducing data signals is provided. A receiver receives transmitted data signals along with an access-control signal, the latter serving to control subsequent processing of the received data signals. The processed data signals are recorded in a first storage medium, and the access-control signal is stored in a second storage medium. When the processed data signals subsequently are reproduced from the first storage medium the access-control signal is retrieved from the second storage medium, and is used to control the reprocessing of the reproduced data signals.
The above, and other objects, features and advantages of the present invention will become apparent from the following detailed description of illustrative embodiments when read in conjunction with the accompanying drawings in which the same components are identified by the same reference numerals.
REFERENCES:
patent: 4030128 (1977-06-01), Perret
patent: 4506387 (1985-03-01), Walter
patent: 4649510 (1987-03-01), Schmidt
patent: 4658093 (1987-04-01), Hellman
patent: 4700386 (1987-10-01), Kohn
patent: 4817140 (1989-03-01), Chandra et al.
patent: 4916737 (1990-04-01), Chomet et al.
patent: 4930158 (1990-05-01), Vogel
patent: 4947429 (1990-08-01), Bestler et al.
patent: 4975951 (1990-12-01), Bennett
patent: 5054064 (1991-10-01), Walker et al.
patent: 5109413 (1992-04-01), Comerford et al.
patent: 5151782 (1992-09-01), Ferraro
patent: 5204897 (1993-04-01), Wyman
patent: 5260999 (1993-11-01), Wyman
patent: 5319705 (1994-06-01), Halter et al.
patent: 5381480 (1995-01-01), Butter et al.
patent: 5400402 (1995-03-01), Garfinkle
patent: 5428529 (1995-06-01), Hartrick et al.
patent: 5615264 (1997-03-01), Kazmierczak et al.
patent: 5619570 (1997-04-01), Tsutsui
patent: 5625690 (1997-04-01), Michel et al.
patent: 5634012 (1997-05-01), Stefik et al.
patent: 5689560 (1997-11-01), Cooper et al.
patent: 5734823 (1998-03-01), Saigh et al.
patent: 5734891 (1998-03-01), Saigh
patent: 5764762 (1998-06-01), Kazmierczak et al.
patent: 5765152 (1998-06-01), Erickson
patent: 6135646 (2000-10-01), Kahn et al.
patent: 6253193 (2001-06-01), Ginter et al.
patent: 4334931 (1994-04-01), None
patent: 43 34 931 (1994-04-01), None
patent: 0267039 (1988-05-01), None
patent: 2272822 (1994-05-01), None
patent: 2 272 822 (1994-05-01), None
Abyss: An Architecture for Software Protection; Steve R. White and Liam Comerford; IEEE Transactions on Software Engineering, vol. 16, No. 6, Jun. 1990; pp. 619-629.
Abyss: A Trusted Architecture for Software Protection: Steve R. White and Liam Comerford; Proc.s of IEEE Symposium on Security & Privacy; 1987; pp. 38-51.
Fukushima Shinichi
Goto Koichi
Tsukamoto Junichi
Frommer William S.
Frommer & Lawrence & Haug LLP
Gregory Bernarr E.
Kessler Gordon
Sony Corporation
LandOfFree
Controlled-access broadcast signal receiving 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 Controlled-access broadcast signal receiving system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlled-access broadcast signal receiving system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3144695