XPost: comp.dsp, sci.crypt, sci.electronics.design   
   From: krw@att.bizzzzzzzzzzz   
      
   On Fri, 18 Dec 2009 00:20:47 -0800, Archimedes' Lever   
    wrote:   
      
   >On Thu, 17 Dec 2009 20:05:07 -0600, krw  wrote:   
   >   
   >>On Thu, 17 Dec 2009 17:44:12 -0800 (PST), Mark    
   >>wrote:   
   >>   
   >>>   
   >>>>   
   >>>> Passing encrypted video over a satellite network built for unencrypted   
   >>>> analog video is not a trivial challenge. As far as I know, there   
   >>>> exists no scheme to do this that has not been broken already. The   
   >>>> problem is that encryption works partly by diffusing information so   
   >>>> that no part of the output looks like any part of the input. The   
   >>>> satellite link is filled with errors and distortion that have to be   
   >>>> contained to retain adequate video quality.   
   >>>>   
   >>>> DS   
   >>>   
   >>>um,, is that why General Instrument was able to do it did it 15 years   
   >>>ago for HBO?   
   >>   
   >>It can obviously be done.  It just requires different, perhaps less   
   >>efficient, error correction algorithms which may mean lower S/N   
   >>required.   
   >   
   >  Wrong.  It just requires MORE FEC.   
      
   AlswasWrong is once again wrong.  Surprise everyone!   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)