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List:       mjpeg-users
Subject:    [Mjpeg-users] Re: Question about AGC for the DC10+
From:       Andrew Piecka <apiecka () alum ! mit ! edu>
Date:       2006-03-12 15:33:01
Message-ID: 1142177581.3306.17.camel () localhost ! localdomain
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Ronald,

I modified the saa7110 module with the first of the two suggestions you
made, i.e. changed the third byte from 0x40 to 0x00. Now I get a very
nice picture. So that is the one to use when you make the driver change
in the future.

This was puzzling to me for a long time because it seemed to only occur
on captures from a tuner. I have captured stuff from my camcorder for
quite a while, but when I got the second card I wanted to to some
"taping" of on-air programming. The big mystery was when I had the same
problem with the output of my TV, not my VCR. I guess that both my VCR
and TV are mucking with their output signals somehow to cause the AGC
problem.

At any rate things are good now, if only channel 7 had a better signal.

Again, many thanks for the information, and for taking the time to share
it.

Andrew

On Sat, 2006-03-11 at 13:33 -0800, Andrew Piecka wrote:
> Ronald,
> 
> Thank you so much for the information. I believe I will be able to get
> my noise problem cleared up now. Haven't got to the driver just yet, but
> from your note and the information on the referenced datasheets I
> believe this will do it. I'll let you know which of the two alternatives
> works so you can incorporate it as a load option. I hope I can get to
> this today sometime, but these fun projects sometimes have to take a
> back seat to other things (like doing my taxes, real fun).
> 
> Again, thank you for your good work.
> 
> Andrew



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