Patent attributes
A tactile graphic display for providing a display representation of a graph or image generated by a graphic device for visually impaired users or other users who wish to access tactile information. The tactile graphic display includes a control and interface module in communication with a dot matrix, which is associated with pin nut assemblies including caps that serve as dots in the dot matrix. The control and interface module provides motor drive signals that raise selected dots above the top surface of a top panel to form the dot matrix display. Proximity sensors in or associated with the top panel sense touching of one or more dots and/or proximate presence of a finger or hand near the top surface of the top panel. The proximity sensors provide dot matrix engagement signals to the control and interface module for processing.
