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PICList Thread
'Video to PIC to Modem'
1998\06\05@121046 by ashley

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Has any body captured video or digital picture with a pic and then sent data
via a modem ?

This is what I want to do as well as collect and send other data collected from
a remote station.

Any comments or pointers welcome.

ASH -UK-

1998\06\05@170142 by Bob Blick

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On Thu, 4 Jun 1998, ashley barnett wrote:

> Has any body captured video or digital picture with a pic and then sent data
> via a modem ?

Yes, inasmuch as the Quickcams have a PIC in them, and I've used a PC
running ISPY or Webcam32 and a modem.

Unless you add a bit of hardware to the PIC, it would be a clunky setup to
do it with a camera, PIC, and modem.(without a PC). You'd have to do the
dialup, then using the limited amount of ram in the PIC capture a line of
video or a portion of a line, send it out the modem, count lines until you
came around to the next line, grab that one, etc. Your picture would be
made of video lines taken over the course of a minute or so, or however
long it took to modem out the data.

-bob

1998\06\05@184641 by Dan Larson

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On Fri, 5 Jun 1998 09:41:35 -0700, Bob Blick wrote:

>On Thu, 4 Jun 1998, ashley barnett wrote:
>
>> Has any body captured video or digital picture with a pic and then sent data
>> via a modem ?
>
>Yes, inasmuch as the Quickcams have a PIC in them, and I've used a PC
>running ISPY or Webcam32 and a modem.
>
>Unless you add a bit of hardware to the PIC, it would be a clunky setup to
>do it with a camera, PIC, and modem.(without a PC). You'd have to do the
>dialup, then using the limited amount of ram in the PIC capture a line of
>video or a portion of a line, send it out the modem, count lines until you
>came around to the next line, grab that one, etc. Your picture would be
>made of video lines taken over the course of a minute or so, or however
>long it took to modem out the data.
>
>-bob
>

How about hacking one of those "Snappy" devices?  They must already have a nice
frame buffer.  Add a cheap CCD camera and an *external* modem and you are in
business!  A larger MCU such as an 80C51 or 68HC11 might be more appropriate tho
ugh,
but I bet you could still get by with a PIC as long as the frame buffer was exte
rnal.

Dan

1998\06\06@134908 by rank A. Vorstenbosch

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ashley barnett wrote:
>
> Has any body captured video or digital picture with a pic and then
> sent data via a modem ?

Yes.  My current project is a videoconferencing camera which uses a PIC
to control the system.  The video compression is done on a 250MIPS embedded
StrongARM -- it could theoretically be done on a PIC but not very easily.  This
is 320x200x30fps though.

> This is what I want to do as well as collect and send other data
> collected from a remote station.

Your best bet is to get a ready made camera/capture system (like ours, but
that's not yet for sale) and to interface it to a PIC which controls a modem
chipset.  Especially digital still cameras should be not too difficult (they
have JPEG compression built in).

Frank
------------------------------------------------------------------------
Frank A. Vorstenbosch    <UCE_ACCEPT="NONE">    Mobile:  +44-976-430 569
Wimbledon, London SW19                          Home:   +44-181-544 1865
spam_OUTfrankTakeThisOuTspamfalstaff.demon.co.uk                      Office: +44-181-636 3391

1998\06\08@143526 by Craig Lee
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When is this being released?  I'd like one.

Craig

-----Original Message-----
From: Frank A. Vorstenbosch <.....frankKILLspamspam@spam@FALSTAFF.DEMON.CO.UK>
To: PICLISTspamKILLspamMITVMA.MIT.EDU <.....PICLISTKILLspamspam.....MITVMA.MIT.EDU>
Date: Saturday, June 06, 1998 11:49 AM
Subject: Re: Video to PIC to Modem


>
>ashley barnett wrote:
>>
>> Has any body captured video or digital picture with a pic and then
>> sent data via a modem ?
>
>Yes.  My current project is a videoconferencing camera which uses a PIC
>to control the system.  The video compression is done on a 250MIPS embedded
>StrongARM -- it could theoretically be done on a PIC but not very easily.
This
>is 320x200x30fps though.
>
>> This is what I want to do as well as collect and send other data
>> collected from a remote station.
>
>Your best bet is to get a ready made camera/capture system (like ours, but
>that's not yet for sale) and to interface it to a PIC which controls a
modem
>chipset.  Especially digital still cameras should be not too difficult
(they
>have JPEG compression built in).
>
>Frank
>------------------------------------------------------------------------
>Frank A. Vorstenbosch    <UCE_ACCEPT="NONE">    Mobile:  +44-976-430 569
>Wimbledon, London SW19                          Home:   +44-181-544 1865
>EraseMEfrankspam_OUTspamTakeThisOuTfalstaff.demon.co.uk                      Office: +44-181-636 3391
>

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