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Scrambled TV-IF signal transmission system
   
Document Number
US Patent 5430798
Issued Date
July 4, 1995
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Abstract
A cable TV signal transmission system comprising a Nyquist filter carrier recovery circuit, a mixer, a level shifter and a pre-emphasis circuit for transmitting scrambled TV-IF signals on an FM or digital signal link to a receiver section comprising a de-emphasis circuit, an amplitude modulator circuit and a VSB filter so as to provide to remote TV receivers a scrambled TV-IF signal with correct timing between the video and audio scrambling information.
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Scrambled TV-IF signal transmission system - US Patent 5430798 Drawing
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Number of Claims:
18
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Published
July 4, 1995
Application Number
08/259,469
Filed
June 14, 1994
US Classification
380/220   380/238
Int'l Classification
H04N   7/169   (20060101)   H04N   7/167   (20060101)  
USPTO Field of Search
380/10   380/19   348/8  
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