[Gllug] XOR

[Gordon Joly]

At 13:12 +0100 2004/04/28, Tethys wrote:
>Gordon Joly writes:
>
>>>There's even a bogus patent on using XOR for cursor drawing IIRC.  See
>>>John Walker's page about bogus patents:
>>
>>  [...]
>>
>>But it what sense is it bogus?
>
>In the sense that to be patentable, it has to be innovative, and not
>obvious to an expert in that particular field (at least for US patents,
>like the XOR one). Using XOR for a cursor had huge amounts or prior art,
>and was thus not innovative. It is also immediately obvious to anyone
>in the field (I worked it out when I was around 13, for example).
>
>Tet


Fair enough: but it was patented.

Gordo

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