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<TITLE>sane-devel: Re: Interesting news, and some questions</TITLE>
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<META NAME="Author" CONTENT="Karl Heinz Kremer (khk@khk.net)">
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<META NAME="Subject" CONTENT="Re: Interesting news, and some questions">
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<H1>Re: Interesting news, and some questions</H1>
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<STRONG>From:</STRONG> Karl Heinz Kremer (<A HREF="mailto:khk@khk.net?Subject=Re:%20Interesting%20news,%20and%20some%20questions&In-Reply-To=<20000320221934.C1192@khk.net>"><EM>khk@khk.net</EM></A>)<BR>
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<STRONG>Date:</STRONG> Mon Mar 20 2000 - 19:19:34 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0221.html">Torsten Howard: "Success!! and, ? about ADF"</A>
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On Mon, Mar 20, 2000 at 10:58:04PM +0000, Torsten Howard wrote:
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<BR>
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<P>Before you invest any more time, there is a chance that the problems
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<BR>
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you are seeing are caused by the USB system. The several minutes time
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<BR>
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outs are also seen with e.g. a Kodak camera. That's also the reason
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<BR>
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why I'm not doing anything in the backend code at this time. I just
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<BR>
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got confirmation that the latest backend code is still working with
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<BR>
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a Perfection 610.
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<BR>
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<P><EM>> Anyways, here are a few questions for the knowledgeable:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Does scanimage determine the scanner identity from these 'S:' entries, as seen in the usb/devices file?
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</EM><BR>
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<P>No. The EPSON backend get's the scanner manufacturer and name from
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<BR>
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a command that's send to the scanner.
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<BR>
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<P><EM>> What could the access to the scanner driver change, such that the usb susbsystem can no longer identify the scanner?
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</EM><BR>
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<P>USB errors?
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<BR>
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<P><EM>> How, exactly, are scanner identities determined? Inside each individual driver code? By standard mechanism? Are there differences between the USB/SCSI command requests (esp. for the epson)?
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</EM><BR>
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<P>Yes, each backend does this. In the case of the EPSON backend the SCSI and USB
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<BR>
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scanners are treated the same way. The command set is the same.
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<BR>
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<P><EM>> Oh well, it's ten pm and I must study for dynamics test. More on this later.
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</EM><BR>
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<P>Good luck,
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<BR>
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<P>Karl Heinz
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<BR>
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<P><PRE>
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--
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Karl Heinz Kremer <A HREF="mailto:khk@khk.net?Subject=Re:%20Interesting%20news,%20and%20some%20questions&In-Reply-To=<20000320221934.C1192@khk.net>">khk@khk.net</A>
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<A HREF="http://www.khk.net">http://www.khk.net</A>
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<P>
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</PRE>
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<LI>application/pgp-signature attachment: <A HREF="att-0220/01-part">stored</A>
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<!-- attachment="01-part" -->
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<P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20Interesting%20news,%20and%20some%20questions&In-Reply-To=<20000320221934.C1192@khk.net>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0221.html">Torsten Howard: "Success!! and, ? about ADF"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Mon Mar 20 2000 - 19:11:41 PST</EM>
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