Frame Grabbers <-> PC RAM

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Article #483

#483

From: Muthuveerappan Jeganathan
Date: Thu, 20 Aug 1992 20:57

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Hi, I hope this is the appropriate news group for the following discussion. I 
have a question regarding image transfer from frame grabbers to PC RAM. I am 
interested in capturing a 1k x 1k x 8 (1 MB) image from a CCD using a frame 
grabber. At what rate can I dump these images from the frame grabber on to the 
PC RAM or possibly a SCSI hard disk. If the CCD operated at 5Hz frame rate, is 
it possible to transfer all 5 MB to the RAM in a second? I have been told data 
transfer is limited by the PC bus. Is this true? How about with a DMA transfer?
If the answer depends on the system, what are the typical transfer rates for
a 486 50 MHz PC with 64 MB RAM and 1 GB SCSI HD.

Any help is appreciated. Thanks. By the way, if this would be more appropriate
for another group let me know. I cross posted this on sci.image.processing.

-- Muthu Jeganathan

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Message-ID: <1992Aug20.205727.7573@leland.Stanford.EDU>

Path: arc1-ca.pugleaf.net!sparky!uunet!morrow.stanford.edu!leland.Stanford.EDU!jeganath

References: <52092@dime.cs.umass.edu> <1992Aug20.200815.25848@PA.dec.com>

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Newsgroups: comp.multimedia
Path: arc1-ca.pugleaf.net!sparky!uunet!morrow.stanford.edu!leland.Stanford.EDU!jeganath
From: jeganath@leland.Stanford.EDU (Muthuveerappan Jeganathan)
Subject: Frame Grabbers <-> PC RAM
Message-ID: <1992Aug20.205727.7573@leland.Stanford.EDU>
Sender: news@leland.Stanford.EDU (Mr News)
Organization: DSG, Stanford University, CA 94305, USA
References: <52092@dime.cs.umass.edu> <1992Aug20.200815.25848@PA.dec.com>
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Date: Thu, 20 Aug 92 20:57:27 GMT
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