Re: [Discuss-gnuradio] MPAA at it again.

[Marcus Leech]

Leech, Marcus [CAR:1A12:EXCH] wrote:

> On the "ashamed to be an engineer" aspect--look at the ARDG (Analog 
> Reconversion Discussion Group) page at the
>  http://www.ctpwg.org  website.  Given the large number of technology 
> submissions to this group, there must
>  be plenty of engineers who actually think this can be made to work, 
> for suitable definitions of "work".

Ooops, that should be http://www.cptwg.org


So, what if they actually get this stuff through, and all 
analog-video-to-digital devices have a
 "detect watermark and drop" mandated?

It seems to me, that given   ifft(fft(x)) == x, then one could produce a 
special form of spectral inversion
 device by taking the bins of a suitable-resolution FFT, re-ordering 
them to taste, then computing an
 IFFT on the result.  The "video-to-digital" converter would never see 
its watermark, then you just
 re-arrange the spectra back to the way it should be after the 
"watermark detect" phase.  But maybe I'm
 all wet, as it were.

--
Marcus Leech                            Mail:   Dept 1A12, M/S: 04352P16
Security Standards Advisor        Phone: (ESN) 393-9145  +1 613 763 9145
Strategic Standards
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