Re: SCSI or USB

From: David Nelson (dnelson@jump.net)
Date: Wed Mar 15 2000 - 21:09:58 PST

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    Hi Steve,

    If memory serves me, the SuSe USB backport is based on very old USB code.
    You can retreive later backports from http://www.linux-usb.org.

    Although several scanners, 40+, are recognized by the USB scanner driver,
    *most-not all* HP's, Epson, Agfa and soon Acer are known to work via USB
    and SANE. Some info/news can be gathered from
    http://www.jump.net/~dnelson/linux/usb.

    At the soon to be released version of the driver (0.4.2) there seems to be
    a performance issue and this is in the queue for me to investigate.
    Otherwise, some stats that I got before things slowed down are:

     * Performance:
     *
     * System: Pentium 120, 80 MB RAM, OHCI, Linux 2.3.23, HP 4100C USB
    Scanner
     * 300 dpi scan of the entire bed
     * 24 Bit Color ~ 70 secs - 3.6 Mbit/sec
     * 8 Bit Gray ~ 17 secs - 4.2 Mbit/sec

    Hmmm, I thought I had some performance numbers documented in the
    scanner*.txt files comparing w98 and linux but I can't seem to find
    those...sigh. Anyways, 8 bit scans performed equally well, linux
    outperformed w98 on 24 bit scans, though.

    Pictures using an HP-4100 in conjunction with gimp and SANE using Linux
    can be viewed at http://www.jump.net/~dnelson/travels. Scans from an
    HP-5200 were outstanding in comparison with the 4100 (as is the price for
    the 5200 ;).

    Regards,
            /\/elson

    On Wed, 15 Mar 2000, S.P.Sheriff wrote:

    > Hi everyone
    >
    > Am trying desperately to come to terms with SANE, kernels and modules.
    > As I see it I have the choice between a SCSI scanner and a USB one for
    > Linux. The latter seem freely available whilst the former have to be
    > ordered through a specialist dealer (here in Spain at least). Does
    > SANE recognise both in the same way or is the way that they are set up
    > different? Apparently, my kernel (SuSE 6.3 from the box) has support
    > for USB backported from the 2.3 kernel. Does this mean that I can plug
    > in a supported USB scanner and have SANE recognise it as a device?
    >
    > Any help however small much appreciated.
    >
    > THanks from Steve at FeF, Spain.
    >
    >
    > --
    > Source code, list archive, and docs: http://www.mostang.com/sane/
    > To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com
    >

    -- 
    David /\/elson
    http://www.jump.net/~dnelson
      
      "Management is doing things right; leadership is doing the right things."
                                             -- The 7 Habits Book
    

    -- Source code, list archive, and docs: http://www.mostang.com/sane/ To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com



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