H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/30, 354/70
H04N 7/167 (2006.01) H04K 1/06 (2006.01) H04N 7/169 (2006.01)
Patent
CA 1291559
ABSTRACT Method for coding and de-coding audio and video information There is described a method for coding and de- coding in an information-transmission system, particularly for pay-television, which comprises for coding, converting the input analog signal into a digital signal, treating said latter digital signal to impart thereto a form which makes the information content thereof unintelligible for normal receiving circuits, converting said signal back to an analog signal for transmitting same, and for receiving and de-coding, converting the input analog coded signal into a digital signal, treating said digital signal to return same to a form which makes said information content intelligible for normal receiving circuits, and finally converting the treated signal back to analog form for the use thereof. There is further described an apparatus for the working of this method.
499246
Goray Eddy C.
Joris Pierre J.
Nelen Jean-Claude S.
Goray Eddy C.
Joris Pierre J.
Nelen Jean-Claude S.
Radio - Television Belge de La Communaute Francaise
Sim & Mcburney
LandOfFree
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