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Old 6th September 2002, 06:31 AM   #11
hifiZen is offline hifiZen  Canada
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The circuit should be simple enough to hand build using point-to-point wiring, if you're good with a soldering iron. Check out this link to see what I mean:

I've tried this technique, and it works well.
- Chad.
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Old 1st December 2002, 01:28 AM   #12
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I have just run across a solution to the original question.

Video supply store:

Compsoite (NTSC or PAL) or S-Video (Y/C) to VGA (computer monitor) $89.00

Basically the same thing $84.99

Have a look.

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Old 3rd December 2002, 10:49 PM   #13
haldor is offline haldor  United States
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Originally posted by hifiZen
You could connect an AD7185 to ADV7190... the video will go through an A-D / D-A cycle, but it will do what you want. You could also use the comparable Philips parts (SAA711x series and the like) or one of the other AD parts if you can't get your hands on those specific chips, but those are the ones which came to mind. I'm afraid I don't know of a chip that will do what in the analog domain.

That is is an interesting chip set. I have always been disappointed by the video/audio routing options of HT receivers. The ones I have looked at have Composite and S-Video inputs and outputs, but don't convert a composite input into an S-Video output (or vise-versa). This means that you end up having to connect the both the Component and S-Video outputs to the TV and switch the TV between them (assuming you are using a mix of input sources). Add component video to the mix and it gets even uglier.

I would think that a HT preamp that converted any video input to the best output format your TV supports would be way cool. You would no longer need to switch both the HT receiver and the TV when changing input sources.

I also noticed that the ADV7190 has Macrovision control registers (and the ADV7191 doesn't support Macrovision). This could also be a way to get around pesky Macrovision compatibility issues.

I have been working intermitantly on a 4 X 4 S-Video crosspoint switch (MAX456) and this could end up being expanded to include signal conversion as well. Got to think further about this.

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Old 13th February 2003, 09:59 PM   #14
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i want to get one of these:

and then get one of these
for tv input:
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Old 13th February 2003, 10:00 PM   #15
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do u guys think that will work good or not? or will it work at all? do u guys have a good alternative to that?
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Old 23rd February 2003, 10:29 PM   #16
usekgb is offline usekgb  United States
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Default RCA to S Video

Going back to the beginning of this thread, how does one convert between the RCA video and and S Video signal? My reciever doesn't convert between the two, and I'd like to put some adaptors on my VCR to make all the switching simpler.

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Old 24th February 2003, 06:31 AM   #17
pizzi is offline pizzi  United States
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I found this:

and this:

Maybe it will help someone trying to convert video to vga.
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Old 24th February 2003, 01:21 PM   #18
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S video to composite is the only simple conversion in the bunch
- I cannot vouch for the quality

lifted from:

(line up the plus signs in the ascii diagram-its not pasting well)
S-video to composite video adapter
This simple adapter can be used to convert Y/C video (S-video) to a composite video. This adapter is useful in cases where your video output device has only S-video output but your signal source accepts only composite video input. This circuit works with both PAL and NTSC video standards.

+---------- RCA/composite ground

+--------- RCA/composite video
varta lviv
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