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Article #5246

Re: Re:Analog Signal on Floppy Drives?

#5246
From: Jon Sreekanth
Date: Tue, 24 Jul 1990 16:39
35 lines
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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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
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