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Old 08-26-2017, 10:57 PM
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old_tv_nut old_tv_nut is offline
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Quote:
Originally Posted by lnx64 View Post
There's gotta be a way to make a circuit that shifts the color burst signal slightly.
I see you have discovered that there is such a device, but it's not cheap or simple! The problem is that you need to shift the phase of the burst without shifting the phase of the chroma. No simple circuit can do that. It has to be gated to work only during the burst, and that means it also has to be synchronized to the input, and so, as I said, it needs to be a video proc (processing) amp.

There is one fishy thing here, though, and that is that all your sets behave the same (is this exactly true? or is the amount of error different?). The same magnitude of error on all sets could indicate that the effect is not due to chroma frequency (which you would expect to produce an error in the same direction but different amounts in different sets), but could actually be due to burst phase errors in your sources. This conceivably could be fixed if you could get into the right place in each source hardware and adjust the burst phase. However, if that adjustment is fixed somewhere internal to an IC in the device, you are out of luck.
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Last edited by old_tv_nut; 08-26-2017 at 11:04 PM.
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