Virtual All-Points-Addressable Tactile Display
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-27
Disclosed is a tactile display system offering a virtual All-Points- Addressable (APA) tactile display device. The tactile display system consists essentially of a movable display mechanism with absolute positioning and a general control system. The movable display mechanism comprises: A small-scale (fingertip size) tactile array with electromechanically driven pins. A position determination system to define the absolute coordinates of the movable display over a flat surface. This can be achieved either with a special table, such as a digitizing table containing a fine mesh of wires, or better, with an inert surface, such as a normal desk top, using acoustical location mechanisms placed at the corners. Control buttons mounted on the movable display and easily accessible by the fingers which are not used for tactile input.