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HV Delay and use of Overscan


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#1 Marcus Allemann

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Posted 30 September 2014 - 01:21 PM

more questions I just couldn't dig up an answer for that I'm push on to here.

 

what is the purpose of H/V Delay on onboard monitors? I've been able to read what it does but still am not certain why you would need to use it if someone would care to clarify.

 

and why would you use overscan on a monitor? cheers


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#2 David Mullen ASC

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Posted 30 September 2014 - 04:12 PM

I think only a video engineer would be interested in seeing the blanking area and sync-burst signal by using H-V Delay but I suppose if something seemed wrong with the picture's sync, someone might want to check that aspect.  As for watching the full pixel-to-pixel image in underscan versus using overscan, it just may because someone might want to see the area that most TV sets would show, or just wanted a slightly larger image on their monitor, like for focus-pulling.

 

All of these issues meant more in the days of CRT's...


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