Re: optacon on Ipaq
- From: dg140@xxxxxxxxxxxxxxxxxxx (Charles Pond)
- To: optacon-l@xxxxxxxxxxxxx
- Date: Tue, 16 Nov 2004 20:50:07 -0500 (EST)
Hi Rachel. I don't know whether or not Oleg is sidelining the years of
optacon experience. He is one of the most knowledgeable people of anyone
out there. His display, as last described over a yer ago, had a
resolution of 10 pins per inch. Not even close to the optaaconer's
resolution. The refresh rate of his display was about 60-100 Hertz. The
optacon's is at aout 230 Hertz. 230 Hz turns out to be, empiracly (spell)
the best frequency for human perception. 60 to 100 Hz? No. This is why
we question the design of his display.
The optacon II, by most people's estimation, Rachel, is a regression from
the R1D. The display is of a coarser resolution, with fewer vibrating
pins (100 compared to a44). The threshold sensitivity is not nearly as
responsive as the R1D's. The actual reading pace is sluggish at times
when the camera is moved quickly. The placement and design of the camera
holder, and the design of the case reduces the optacon II's portability.
The serial port was never really exploited as it still could be. So how
does that grab you?
Charles
---
>Charles,
>Why would Oleg sideline all of the years of Optacon experience - because of
>pressure from those who don't see the benefit of our being able to
>interpret images for ourselves? From the little I know of the P2RD, it
>sure seems like he's not taking our needs into account.
>
>And the only reason I keep mentioning the VideoTIM is because the NFB
>technology center actually has one of them on display; I'm not aware of the
>P2RD's being displayed anywhere. Is the P2RD actually being mass-produced
>yet, or is it still just a prototype?
>
>I briefly saw the Optacon II but never actually used it. Now that I'm
>hearing all the things people have done with it, I wish I'd pursued it further.
>
>Re the stored-image issue, how often would the machine snap a picture of
>the screen - just at the initial outset? It just seems that that's the
>wrong way to go, for all the reasons people have already stated.
>Rachel
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