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From: punia@uvm-gen.UUCP (David T. Punia)
Newsgroups: comp.periphs,comp.graphics
Subject: Re: a portable device for projecting computer displays?
Message-ID: <468@uvm-gen.UUCP>
Date: Wed, 24-Dec-86 09:22:18 EST
Article-I.D.: uvm-gen.468
Posted: Wed Dec 24 09:22:18 1986
Date-Received: Fri, 26-Dec-86 03:44:54 EST
References: <3122@milano.UUCP> <147@piaget.UUCP>
Organization: EMBA Computer Facility, Univ. of Vermont, Burlington.
Lines: 41
Summary: Projection device for PC's
Xref: mnetor comp.periphs:80 comp.graphics:109

In article <147@piaget.UUCP>, jc@piaget.UUCP (John Cornelius) writes:
> In article <3122@milano.UUCP> marks@milano.UUCP writes:
> >Is there some device available which could be easily carried around
> >with a laptop PC, and attached to the external monitor port to be used
> >in conjunction with either an overhead projector or a slide projector
> >for projection onto a screen?
> 
> In Focus, Inc.		1618 SW Fist Ave #316		(503)226-4502
> It is a flat LCD that
> attaches somehow to the PC and lies on an overhead projector.  The screen
> image is impressed onto the LCD and projected onto the screen.  It is
> monochrome only.  I do not know the resolution of the device.
> 
	Kodak manufacturers such a system; it's called Datashow, and comprises
an LCD screen that sits on top of an overhead projector, an infrared remote
control, and a wall mounted power supply.  The system's cabling provides a 
'Y' connection to the output of a CGA type card, allowing your monitor to run
at the same time, and a serial port connector for use with the supplied
software.  The software, called SHOWMAKER, is intended to facilitate the 
production of slide shows and help organize screen images.  The remote control
sends setup and control commands to the tablet and can also be used in 
conjunction with SHOWMAKER.
	We've been looking for an inexpensive alternative to the SONY or other
video projection systems, which run $5K and up.  The DATASHOW system is less
than $1300 list.  Screen resolution is 640 X 200 and the aspect ratio matches
the IBM (1.3:1), so your circles come out as circles.  The active area of the
screen is about 6 X 8 inches, and the overall dimensions are 11.8 X 13 X 2.1".
	The display image is pretty good, with contrast, brightness, and
centering adjustable with the remote.  The image can also be inverted to give
light on dark or dark on light displays.  The nicest thing about it, versus the
projectors, is that you can get a nice bright image that doesn't require a 
high gain screen or a pitch dark room.  If you look closely, though there is 
some flickering of some of the pixels, but at distance the effect is not
very noticeable.
	For more info, Kodak has a toll-free number: 1-800-44KODAK
           Or, for those who hate that as much as I: 1-800-445-6325

-- 
David T. Punia                    USENET --> ....!decvax!dartvax!uvm-gen!punia
Univ. of Vermont, CSEE dept.      CSNET ---> punia@uvm  
Burlington, VT 05405-0156         OTHERNETS ----> punia%uvm@csnet-relay