[vorbis-dev] New entropy coder

[Yann Guidon]

hi !

Lourens Veen wrote:

>On Fri 10 October 2003 22:26, Yann Guidon wrote:
>

<snip>

>>i haven't looked at it closely yet but it seemed like there
>>is some potential use. i'm still new to Vorbis, so i can't say,
>>but i'm in the same "wagon" as you, that is : playing with
>>entropy coders. i'm writing a few articles about that now.
>>Consider doing this in your local journal as well.
>>    
>>
>One point to consider is the patent status of your ideas.
>
who's idea ?

>Arithmetic coders are not used in the current standard because of this.
>
i've been told by more informed people than me that there are some 
patent-free
and better algorithms than the classical IBM implementation. Furthermore,
arithcodes are not new and some patents will probably become public domain
in a few years. But nothing should stop us from searching better 
alternatives,
who knows ?

>And since software patents are usually rather broad, your algorithm may 
>also fall under these patents. Ofcourse, not having looked at 
>either your algorithm or the patent claims, I can't say if this is 
>the case, but I figured you'd want to keep it in mind.
>  
>
For me, development freedom a higher stake than profit.
Though, being unemployed, i still have to find a way to earn money.

i am not an expert but have gained some knowledge with other
copylefted projects (F-CPU to name one). So yes, i am careful
but i now i know that publishing the codes and ideas in magazines
is a good protection. It also lets specialists examine the idea
and determine the potential patent threat. Finally, publication
is a good and tax-free way to earn money.

I am currently writing an article on my entropy coder
for DDJ. This should increase the peer review,
generate comments and find practical applications.

I have subscribed to this list in order to know
how to implement Vorbis codecs and determine wheter
my own entropy coder could be used in Vorbis or
other xiph projects. If we can make better and simpler
codecs, this will reduce the need to pay MPEG fees :-)

>Lourens
>  
>
YG

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