Ugh, got rejected first time round, trying again ... On 6/17/07, Wasim Baig <[EMAIL PROTECTED]> wrote:
http://www.voip-info.org/wiki/view/Codec+Patents On 6/17/07, Steve Underwood < [EMAIL PROTECTED]> wrote: > > Hi all, > > There is an issue which is common ground for most free telephony > projects - codec patents. In the near term we need to live within the > constraints of these patents, but they won't last forever (well, not as > long as Disney isn't a big patent holder). The snag is working out when > they will be free. There are several relevant encumbered speech codecs, > potentially useful for what we do. The obvious ones are AMR-NB, AMR-WB, > G.722.1, G.722.2 (which is basically AMR-WB by another name), G.723.1 , > G.728, G.729, G.729.1. If you look through the ETSI and ITU web sites > you can find some material about who claims patents related to these > codecs. However, the information is far from complete. In most cases the > > actual patent numbers claimed to be relevant are not listed. The dates > of filing, granting and expiration are not generally listed, though if > the patent numbers are available the dates are easy to find. > > I think it would be valuable to start a web page where all this > information is gathered. We might then get a real picture of when a > codec will become unencumbered. > > Clearly, video and even image, codecs are also of relevance to us. > However, I think the speech codecs would be a good starting point. > > Steve > > _______________________________________________ > Callweaver-users mailing list > [email protected] > http://lists.callweaver.org/mailman/listinfo/callweaver-users > -- wasim h. baig | principal consultant | convergence pk | +92 300 8508070
-- wasim h. baig | principal consultant | convergence pk | +92 300 8508070
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