Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1980-10-17
1983-11-08
Kemeny, Emanuel S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
351 50, 351 47, G10L 100, G02B 1700
Patent
active
044144318
ABSTRACT:
A device for producing images of a plurality of speech information symbols associated with speech sounds produced by a speaker into the field of view of a hearing-impaired person with one or more light emitting or illuminated arrays mounted paraxially with the viewer's line of sight on a transparent plate which subtends and mounts an adjacent eyeglass lens. A mirror is mounted on the lens to produce a magnified image in the field of view and reflect the image back to the viewer. The interior surface of the lens may be coated to form the mirror or spherical dimples may be ground into the surface before coating and the coated dimples then filled with a material having substantially the same refractive index as the lens.
REFERENCES:
patent: 3463885 (1969-08-01), Upton
patent: 3818137 (1974-06-01), Kage
patent: 3936605 (1976-02-01), Upton
patent: 4117265 (1978-09-01), Gerlach
Kemeny Emanuel S.
Research Triangle Institute
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