Patent ID: 11931640
Assignee: nan
Field: Furniture, games (Other fields)
Classification: CPC A  G | IPC A  G

Claim 0:
1. An information-presentation (“IP”) structure comprising:
an object-impact (“OI”) structure having an exposed surface for being impacted by an object during an activity, the OI structure comprising a variable-color (“VC”) region which extends to the exposed surface at a surface zone having a boundary and normally appears along the surface zone largely as a principal color during the activity, an impact-dependent (“ID”) portion of the VC region responding to the object impacting the surface zone at an ID object-contact (“OC”) area spanning where the object contacts the surface zone by temporarily appearing along an ID print area of the surface zone largely as changed color materially different from the principal color if the impact meets threshold impact criteria, the print area having a print area perimeter and at least partly encompassing, at least mostly outwardly conforming largely to, and being largely concentric with the OC area; and
apparatus for (a) determining a portion of the boundary where the print area is nearest the boundary, (b) approximating at least that boundary portion as a smooth boundary vicinity curve, (c) approximating the print area perimeter, or a portion thereof nearest the boundary, as a smooth perimeter vicinity curve, (d) comparing the vicinity curves to determine if they meet or overlap, and (e) providing an indication of the comparison.