Education and demonstration – Communication aids for the handicapped – Tactile reading aid
Patent
1995-08-01
1996-12-03
Kuntz, Curtis
Education and demonstration
Communication aids for the handicapped
Tactile reading aid
434112, 3404071, G09B 2100
Patent
active
055802516
ABSTRACT:
This is a Braille display device which comprises: a plurality of cavities; and circuitry to individually excite the plurality of cavities. The plurality of cavities contain a positive and a negative electrode 18, 22, 26 and are filled with a quantity of polar organic gel 24 sensitive to electric fields. The cavities are sealed by an elastomeric film 14. The elastomeric film is held generally flat, by its own tension, in the absence of any voltage applied to the electrodes 18, 22, 26 in the plurality of cavities. The display device can also include circuitry to determine whether the cavity has been touched by person who is reading the display. The display device can also include circuitry to individually vibrate each cavity. Other devices, systems and methods are also disclosed.
REFERENCES:
patent: 4266936 (1981-05-01), Rose et al.
patent: 5222895 (1993-06-01), Fricke
Intelligent Gels, Yoshihito Osada, et al. Scientific American, May 1993, pp. 82-87.
Gels, Toyoichi Tanaka, Scientific American, 1991, pp. 124-138.
Cowens Marvin W.
Gilkes Alan M.
Taylor Larry A.
Chang Vivian W.
DeLeon Ruben C.
Donaldson Richard L.
Kesterson James C.
Kuntz Curtis
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