Forum: GNU Radio GNU Radio LiveDVD 2013-1110 (based on 3.7.2)

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Johnathan Corgan (Guest)
on 2013-11-11 08:32
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Rafael Diniz (Guest)
on 2013-11-12 18:43
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It would be nice to include Dream and gr-drm, for DRM support in the
; )

Best regards,
Rafael Diniz

Em seg 11 nov 2013, s 05:31:48, Johnathan Corgan escreveu:
> The GNU Radio LiveDVD has been updated:
Rick Farina (Guest)
on 2013-11-12 19:58
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Sadly Dream appears to be an "open source" implementation of a protocol
that is licensed and has no rights allowing for a decoder.  While you
may choose to use it, sadly, distributing it on a livecd would be very
unintelligent as it would make the distributor legally liable for
breaching the license most likely.

Rafael Diniz (Guest)
on 2013-11-12 23:23
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Hi Zero,

You're wrong.
Dream can be distributed as it's GPL licensed. All the code is GPL,
concerning the AAC codec (FAAC and FAAD2), but you don't need to
distribute it
together with dream, as it dlopen()'s the AAC library dinamically (so
you can
install AAC "live"). Most windows and linux dream distributions just do
place the AAC together, and recommend you to just install it separatelly
rarewares or a simple script that downloads the source and compile it).

Also, for the purpose of lab testing, modulation/demodulation, I don't
even use
the AAC codec, as it also comes with the great Opus codec, which is much
than the FAAC AAC LC encoder.

Best regards,
Rafael Diniz

Em ter 12 nov 2013, s 16:57:17, Rick Farina escreveu:
Rick Farina (Guest)
on 2013-11-12 23:52
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On 11/12/2013 04:21 PM, Rafael Diniz wrote:
> Hi Zero,
> You're wrong.

I'm certainly not perfect but if you bother to look at Dream's website:

You will notice they say these words, all in red, on a line by

"Although this software is distributed as free software under the terms
of the GPL this does not mean that its use is free of rights of others.
The use may infringe third party IP and thus may not be legal in some

I would strongly discourage anyone from distributing code that is
violating someone else's IP.  The code is gpl, that's great, but since
it is violating (if I had to guess a US patent) IP knowingly, it puts
anyone distributing it at risk.  I know I for one won't be distributing
such code with my livecd which contains GnuRadio.  Obviously anyone else
can do what they think is best.

Amazing what you notice when you read something...

Sylvain Munaut (Guest)
on 2013-11-13 00:08
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I'm pretty sure if you look hard enough you'll find some blocks in GR
that implement or could implement some patented telecom technique ...

The user could also acquire a license on his own (license which btw is
free of charge for low qty).
Ralph A. Schmid, dk5ras (Guest)
on 2013-11-13 09:09
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> I'm pretty sure if you look hard enough you'll find some blocks in GR that
> implement or could implement some patented telecom technique ...

Uh, oh, don't open Pandoras box :-)

"Marcus Müller" <> (Guest)
on 2013-11-13 09:34
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I don't support the "let's keep our eyes closed" approach.
Everyone that generates a product or service he intends to sell is
(should be) aware of the fact that he has to care about foreign rights
(patents, especially) can be involved.
The inclusion of such software on a scientific/free live dvd is quite
unspectacular, I guess. Unless someone starts selling products bundled
with that DVD. But I think everyone involved with selling GR-related
product has quite a nice idea of the intellectual property involved in
designing signal processing hard- and software.

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