[PeerToPatent Australia] Invitation

Vincent Lefevre vincent at vinc17.org
Mon Jan 4 01:10:46 CET 2010

On 2010-01-04 00:44:06 +0100, Richard B. Kreckel wrote:
> Gosh, almost exactly ten years ago I had working C++ code that
> *exactly* implemented this patent and the ring operations on numbers
> stored thusly! I've not followed this further because I became
> convinced that striving for an internal representation of numbers
> that closely resembles decimal representation is not at all worth
> it: conversion is best done during I/O and it's only O(M(N)*log(N))
> anyways, so what the heck.

Yes. BTW, base 10^k has been used by Maple for many years (since the
beginning?), and IMHO, that's one of the reasons why it is so slow.

> The only sad thing is that, apparently, brain farts have become
> patentable. And this really sucks: The authors of the patent even
> cheekily mention the Chen-Ho and densely packed decimal (of IEEE
> 754-2008 fame) encodings and the stupid examiner at the patent
> office apparently failed to realize that their "invention" is
> nothing more than a straightforward generalization from 10 binary
> digits to 8, 16, 32, 64, or whatever the machine's word size,
> wrapped into overblown "patentese" that makes even simple maths
> sound complex. (I wonder if the examiner ever read the references.)

I've read that (some?) patent offices no longer check inventions
and wait for trials to invalidate the patents.

Vincent Lefèvre <vincent at vinc17.net> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon)

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