AMR-Codec / Patent?

Started by Klaus Keppler November 24, 2003
Hello!

Does anyone know about a patent on the AMR codec?
And if a patent exists - who is contact for licensing?

On the ETSI IPR search there's only mentioned that "Ericsson
claims to have some patents (pending) around AMR".

The ANSI C code example from 3GPP (26.073) is completely
without any notice of patents, copyright or licence.

I'm happy for *any* answer on this!

Thanks,

     Klaus


(Yes, I did have searched Google, news archives, and so on.)

Aloha,

Klaus Keppler schrieb:
> Does anyone know about a patent on the AMR codec? > And if a patent exists - who is contact for licensing? > > On the ETSI IPR search there's only mentioned that "Ericsson > claims to have some patents (pending) around AMR".
goto portal.etsi.org -> guide -> IPR Database -> IPR Search Select in projects 3GPP/AMR-WB and GSM/AMR-NB. Hit Search ... ... and enjoy reading 94 IPR Declarations.
> The ANSI C code example from 3GPP (26.073) is completely > without any notice of patents, copyright or licence.
That's not completely correct. Read 26.071 first. The C code is part of the spec. and therefore copyrighted by 3GPP. And it's no example, it is the bit-exact, mandatory implementation of the codec. Wishing a happy day LOBI
Moin!

> goto portal.etsi.org -> guide -> IPR Database -> IPR Search > Select in projects 3GPP/AMR-WB and GSM/AMR-NB. Hit Search ... > ... and enjoy reading 94 IPR Declarations.
Thanks - I already had that experience... :-) I'm now in e-mail contact with an ETSI secretary. The problem is: there's no statement like "AMR codec: Company XYZ. Contact: ...". :-) To understand the details of different codebooks you need deep knowledge of audio encoding; thus I don't know if patent A or patent B interfere with AMR decoding or not... What I search is either some kind of "AMR license vendor" or - what I prefer - the solid information that decoding AMR data (using the 26.073 reference code) doesn't need to be licensed.
> The C code is part of the spec. and therefore copyrighted by 3GPP. > And it's no example, it is the bit-exact, mandatory implementation > of the codec.
Thanks for this tip! Have a nice day! Klaus