Am 26.05.04, 18:11 +0200 schrieb Gerhard Fuernkranz:

> I guess it's a very similar situation as with Windows GDI printers. The
> manufacturers attempt to make the instrument as dumb as possible and to do
> the more complicated computations in software on the host, since this makes
> the devices cheaper.

Why not. But what is so valuable to hide internals from public? I would
expect most manufacturers does the same. The one problem, I see, is to
adjust the device itself. I expect some tables storing response curves.

> While e.g. a Xrite DTP41 delivers ready-to-use measurements over the
> (documented) V.24 interface, I suspect that the Spectrocam has rather only a
> low-level interface to fire the flash tube, an interface to the instrument's
> ADC, to the EEPROM, but probably not too much more. And everything else

What does You think is the work to start comunication with such simple
devices?

> (calibration stuff, deconvolution, etc.) is presumably done in the SDK
> library.

.. is the more interessting part.

> With this approach, the interface to the instrument's hardware basically
> degrades to an "internal interface" and only the manufacturer's
> hardware+software together provide the full functionality of the instrument.
> Similar to GDI printers, the manufacturers appearently rather don't like to
> document and publish such "internal" interfaces.

Basically I dont like such interfaces. The difference to GDI seems to me,
any manufacturer is responlible for his own device and not in need of an
common smallest subset of features.

--
Kai-Uwe



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