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3.5 KiB
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<!-- received="Mon Jul 14 02:58:32 1997 MST" -->
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<!-- sent="Mon, 14 Jul 1997 11:09:59 +0200 (MET DST)" -->
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<!-- name="Thomas Dent Mirlacher" -->
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<!-- email="dent@cosy.sbg.ac.at" -->
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<!-- subject="Re: Hangs with B&W QuickCam" -->
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<!-- id="199707140051.RAA19245@linda.teleport.com" -->
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<!-- inreplyto="199707132042.WAA00472@darkstar.faho.rwth-aachen.de" -->
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<title>sane-devel: Re: Hangs with B&W QuickCam</title>
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<h1>Re: Hangs with B&W QuickCam</h1>
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<b>Thomas Dent Mirlacher</b> (<a href="mailto:dent@cosy.sbg.ac.at"><i>dent@cosy.sbg.ac.at</i></a>)<br>
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<i>Mon, 14 Jul 1997 11:09:59 +0200 (MET DST)</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#54">[ date ]</a><a href="index.html#54">[ thread ]</a><a href="subject.html#54">[ subject ]</a><a href="author.html#54">[ author ]</a>
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<li> <b>Next message:</b> <a href="0055.html">Andrew Kuchling: "Re: python interface"</a>
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<li> <b>Previous message:</b> <a href="0053.html">Mathias Weigt: "Building xscanimage fails"</a>
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<li> <b>In reply to:</b> <a href="0051.html">eric: "lamp warmup time, etc.."</a>
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On Sun, 13 Jul 1997, Guido Muesch wrote:<br>
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<p>
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<i>> On 11 Jul, Andrew Kuchling wrote:</i><br>
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<i>> > [..]</i><br>
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<i>> > </i><br>
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<i>> > Presumably colour QuickCams don't do this, or someone would</i><br>
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<i>> > have noticed it. Before I try to track down the problem, could</i><br>
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<i>> > someone else with a B&W QuickCam try running xcam or xscanimage, and</i><br>
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<i>> > see if they get the hang too? Perhaps my setup is broken somehow...</i><br>
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<i>> > </i><br>
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<i>> > Thanks in advance!</i><br>
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<i>> </i><br>
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<i>> No, you are right. I experience the same problem with xcam and BW</i><br>
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<i>> QuickCam. After the first scan it hangs. But using scanimage works so</i><br>
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<i>> far. I have not looked into this problem because I thought it is a</i><br>
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<i>> minor 'feature' which will get fixed soon, now that the BW support</i><br>
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<i>> actually does return at least one scan.</i><br>
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<i>> </i><br>
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<i>> One possibility would be, if the amount of rows does not match the</i><br>
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<i>> amount of rows scanned by the QuickCam. (Just a thought).</i><br>
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<i>> </i><br>
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<i>> Happy debugging</i><br>
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<i>> Guido</i><br>
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<i>> </i><br>
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<i>> </i><br>
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<p>
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Well, IMHO the problem is caused by different End Of Frame sequences,<br>
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used by the color and BW quickcam. so the usual workaround (for not so <br>
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clean coded drivers ;) should be to reset the cam after each scan.<br>
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<p>
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just my two cents<br>
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<p>
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++dent<br>
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<pre>
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--
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Thomas Mirlacher Student of ComputerScience, University of Salzburg
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<a href="mailto:dent@cosy.sbg.ac.at">dent@cosy.sbg.ac.at</a> <a href="http://www.cosy.sbg.ac.at/~dent">http://www.cosy.sbg.ac.at/~dent</a>
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<p>
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<pre>
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--
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</pre>
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<!-- body="end" -->
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0055.html">Andrew Kuchling: "Re: python interface"</a>
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<li> <b>Previous message:</b> <a href="0053.html">Mathias Weigt: "Building xscanimage fails"</a>
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<li> <b>In reply to:</b> <a href="0051.html">eric: "lamp warmup time, etc.."</a>
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<!-- nextthread="start" -->
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</ul>
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