[BRLTTY] Dimensions of braille displays
Nicolas Pitre
nico at cam.org
Tue Nov 28 17:47:23 EST 2006
On Tue, 28 Nov 2006, Mario Lang wrote:
> Nicolas Pitre <nico at cam.org> writes:
>
> >> I'm wondering which dimensions a braille display can ha2e, in cells.
> >> Those I know typically are one-line-displays, the number of columns
> >> varying between, say, 18 and 80 cells. Are there other geometries
> >> available ? If the answer is Yes, which models use these geometries ?
> >
> > The Bookworm has 8 cells.
> >
> > I saw a multi row braille display only once. It was a prototype only
> > demonstrated during a trade show. Its refresh rate was impossibly slow
> > and its price was approaching the hundred thousands dollars. In other
> > words, all practical braille displays only have had one row so far.
>
> That is not quite right. I remember a 2x40 display by a company called
> EHG, if I remember correctly. Or the product was called EHG, at least
> it was sold in the 90s in europe. And there is the HandyTech GWP (graphic
> window professional) which has a matrix of dots for displaying graphics.
> I dont remember the dimensions, but if you drive it like a braille display, you
> surely get several lines of approx. 20 or 30 chars...
Really? How much do they sell it?
Nicolas
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