Subject: Re: usb 1.1 vs 2.0
From: Greg Madden (pabi@gci.net)
Date: Mon Jan 06 2003 - 19:09:49 AKST
On Mon, 2003-01-06 at 17:22, James Zuelow wrote:
>
> On 05 Jan 2003 14:46:02 -0900
> "Jim Gribbin" <jgribbin@alaska.net> wrote:
>
>
> > Deciding this wasn't particularly acceptable, I picked up a SIIG usb
> > 2.0/1394 combo card. My slides still take ~3 min per.
> >
>
> The time it takes my SCSI film scanner to complete a scan is directly
> proportional to the resolution I am scanning at. A 600dpi scan takes
> less than a minute, a 2700dpi scan takes more than three minutes. The
> scan mechanism moves proportionally slower as well. The scan is what
> takes longer, not transferring the image to my computer.
>
> I would bet that your connection speed has little if any effect on
> the overall speed - especially if the scanner is spooling data to your
> PC instead of gathering the whole image and then sending it all at
> once.
>
> Cheers,
>
> James
I think you made the case for connection speed does affect scanning
speed :) A 8x10 photo scanned at 600dpi is about 82mb. A scanner that
sends this data to the computer on the fly will take the connection
speed divided by throughput to get time.I do think it may depend on the
scanner. In the case of a page of text it shouldn't take three minutes
unless the scanner scan mechanism takes three minutes, most don't take
three minutes to scan.
-- Greg Madden Precision Air Balance, Inc. Phone: 907-276-0461 email: pabi@gci.net--------- To unsubscribe, send email to <aklug-request@aklug.org> with 'unsubscribe' in the message body.
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