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Article #5246Re: Re:Analog Signal on Floppy Drives?
From: Jon Sreekanth
Date: Tue, 24 Jul 1990 16:39
Date: Tue, 24 Jul 1990 16:39
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1956 bytes
In article <13183@mcdphx.phx.mcd.mot.com>, hbg6@citek.phx.mcd.mot.com writes...
>In article <Iaa=_e200WBKE57EV0@andrew.cmu.edu> kz08+@andrew.cmu.edu (Ken Zuroski) writes:
>>
>>Can anyone tell me if this is a common thing, that is, storing analog
>>information (or rather, storing information in analog) on media
>>conventionally used to store digital info? Obviously the hardware
>
>We evaluated an inspection system in our plant about 8 months ago which
>stored frames of video onto a 3 1/2" hard drive. The idea was to store an
>image of a perfect circuit board in the system, then electronically compare
>it to a live image of the same board type.
>
>It's difficult to get any hard technical details from a salesman but as I
>understand it, one frame takes up one track on the media. One field is on
>side one and one field is on side two. As the disk rotates, it switches from
>one side to the other to construct the full frame.
>
John,
I tried sending you email, but it bounced.
About the inspection system you mentioned : I assume it was storing digitized
(compressed) images on the hard disk, in which case it's just conventional
technology ? Or was it actually a hardware-modified drive ?
Thanks,
/ Jon Sreekanth
US Mail : J Sreekanth, 79 Apsley Street, Apt #7, Hudson, MA 01749
Digital Equipment Corp., 77 Reed Road, HLO2-1/J12, Hudson, MA 01749
email : sreekanth@rgb.dec.com
Voice : 508-562-3358 eves, 508-568-7195 work
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watmath!att!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!samsung!uunet!decwrl!bacchus.pa.dec.com!shlump.nac.dec.com!rgb.dec.com!sreekanth From: sreekanth@rgb.dec.com (Jon Sreekanth) Newsgroups: sci.electronics Subject: Re: Re:Analog Signal on Floppy Drives? Message-ID: <13807@shlump.nac.dec.com> Date: 24 Jul 90 16:39:40 GMT Sender: newsdaemon@shlump.nac.dec.com Organization: Digital Equipment Corporation Lines: 35