He calls it "H-Shift circuits" with built in Sync leveling capabilities to ensure compatibility with non-arcade monitors. This is exactly what I need.
It is created by JFWX - though Google can't help me finding this guy nor PCB board.
Anybody got an idea where to purchase this?
EDIT 23nov2018: You can purchase this board here: item.taobao.com/item.htm?spm=a…debWl6p5k&id=559396726429
But this board is better as it also can do Vertical Position: s.aliexpress.com/UBBFvYNR
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