I have seen this paper about the Omnidirectional Treadmill With CAD model ( with tiny rollers on it):
Which compered its prototype with infinadeck as shown below:
but don't see those roller in infinadeck as seen here:
So does the rollers in infinadeck (more zoomed video) are so small that can not be seen or that company use another mechanism for this device, for example like this:
Update:
By seeing this video i guess Thanks, infinadeck don't have tiny rollers and only have the chain show in the CAD model of paper like this:
But i don't know i am right?!
Thanks.