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From: "Vihang Patil" <vihang_patil@yahoo.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: imaqhwinfo cannot recognize USB webcam
Date: Thu, 7 Feb 2008 05:22:01 +0000 (UTC)
Organization: Konem Solutions
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"Majo " <kosmodisk@post.sk> wrote in message
<foci5g$2op$1@fred.mathworks.com>...
> > There are some cameras that will work with AMCap, but 
> will not work with 
> > the Image Acquisition Toolbox.  What hardware are you 
> using?
> > 
> > -Dave Tarkowski
> 
> SoC PC-Camera Manufacturer
> sensor: 352 x 288 pix, CMOS
> Lens specification: F 2,4, f = 3,6 mm
> Video Format: AVI
> Video capturing: 320 x 240 / 160 x 120
> Video resolution: 640 x 480 pix
> connection: USB
> 
> I tried also command "imaqrest" but it does not solve the 
> problem.
> Thank you.


One possibility would be that Matlab does not identify the
USB device if you have already started Matlab and then
plugged in your USB camera.
See if it works if you plug in your USB camera, start the
AMCAP utility. If you see the video, close the AMCAP utility
and the  start Matlab.
HTH
Vihang