Cryptography – Video cryptography – Copy protection or prevention
Patent
1998-01-12
2000-09-19
Barron, Jr., Gilberto
Cryptography
Video cryptography
Copy protection or prevention
380242, 348453, 386 35, 386 94, H04N 5913, H04N 980
Patent
active
061223778
ABSTRACT:
A video signal receiver has a first output terminal, at which only a chroma, video, blanking, sync signal or a video, blanking, syncs signal with a chrominance signal is output. A second output terminal carries the RGB color signals and the associated sync signals. Video recorders normally evaluate only a video, blanking, sync signal with the corresponding chrominance information and can be connected to the first output terminal. Television displays normally evaluate RGB signals as well and can be connected to the second output terminal. The signal output at the first output terminal for the video recorder can be selectively blocked by a control device which is controlled by an identifier produced at the transmitter end. As a result, it is possible to display an encrypted transmission on the television set, but not to record the transmission on the video recorder.
REFERENCES:
patent: 4725894 (1988-02-01), Sasaki et al.
patent: 4907093 (1990-03-01), Ryan
patent: 4930160 (1990-05-01), Vogel
patent: 4945563 (1990-07-01), Horton et al.
patent: 5216496 (1993-06-01), Miyamoto et al.
patent: 5258826 (1993-11-01), Wakeland et al.
patent: 5657387 (1997-08-01), Mogi et al.
ISO/IEC 13818-1, dated Nov. 13, 1994.
Otto Limann et al.:"Fernsehtechnik ohne Ballast", Franzis-Verlag, Munchen, 1988, pp. 581-584.
Bromba Manfred
Ronner Karsten
Barron Jr. Gilberto
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Stemer Werner H.
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