Braille Display System for the Blind
Original Publication Date: 1985-Oct-01
Included in the Prior Art Database: 2005-Feb-19
This article describes a Braille "Display" System for the blind. The apparatus is designed to produce raised or depressed dots on a surface plate that can be felt by the user. Fig. 1 is a diagramatic showing of the system with the braille element in cross-section. A base element, including a display plate 10, is provided with holes 12 by which air pressure or vacuum can be applied to a soft, elastic membrane 14 under the control of individual solenoid valves 16. The holes are arranged in a grid of character elements so that the membrane 14 can be deformed to produce a surface of raised dot groups or depressions which form braille characters. The operation of the solenoids 16 is under the control of logic 18 which can in turn be controlled by a processor 20 having a keyboard 22. Fig.