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In Reply to: component video switching? bandwidth issues? posted by petew on March 27, 2002 at 07:44:50:
Hi petew, about switching component video signals. This is not new technology, and is actually quite cheap, even up to 100's of MHz of BW. All that's required is for the manufacturer to use it. Current AV receivers seem to do it OK. I have a cheap one, and it switches component video without degradation, as far as I can see. The switching is sufficiently good that I returned the "free" pair of component video cables I had thrown in when I bought the DVDP a few days ago (for a credit even, I am a cheap bastard) since I only have one component source, and don't really need the switch. However, using a switch can't possibly result in better quality than without a switch, it's just how visible any degradation is to you.
Follow Ups:
see above yr post
It's one reason I bought a new receiver, one that switches component/S/composite. The switching circuitry is cheap for a quantity manufacturer, but to get a good quality switch costs $$$ from a specialty manufacturer (Extron, Black Box, etc.). Also, it IS really nice to be able to switch using the remote, something the external switch won't do. Also, newer TV's have lots of inputs too, but the advantage of using the receiver to switch is that it (usually) keeps the cables lots shorter i.e. they don't have to stretch to the TV, which is typically somewhat distant from the other gear if it's a large-screen.500MHz BW chips for switches are less than $10 each for singles, you'd need two for two components, so not too hard to build something.
I think sam9 got your main problem. I have an older TV like that, it chooses S over composite by itself when there's a signal on both, I have no control...
Since they're relevant to using a switch and determining results. The returned "free" ones were 3', $100 a set of three, don't know the brand, from DVDP to switch originally. The long 8' cables from the switch output (originally, now from the DVDP) to TV are DIY Belden 1695A.
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