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Miffyli's avatar
Miffyli
Honored Guest
11 years ago

DK2's internal latency tester

So now that DK2 is out I have been going over "getting started" guides et cetera I haven't even seen a word about DK2's latency tester that is one of the highlights at DK2 order page. I know it's not ...
datenwolf's avatar
datenwolf
Honored Guest
11 years ago
"PathogenDavid" wrote:
Since it is only one pixel and due to the lack of any visible hardware, I'm incline to agree with the video stream theory.


Since the DK2 display is scanned starting with the top right corner, then downwards and to the left, it's trivial to implement a latency tester simply by looking at a spike in power consumption (the DK2 display is a OLED matrix, where there's a significant difference is current between pixels being off or an), or a little bit more complex by looking at the LVDS signal going into the display, when the first occurance of a certain pattern of bits goes in.

So yes, this is most certainly not implemented using a photodiode.