Silent communicator

Details Silent communicator Silent communicator

1979-07-11

1981-12-01

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340756, 340792, G06F 314

Patent

active

043039154

ABSTRACT:
A portable hand held, electronic alphanumeric display device for assisting individuals to communicate with one another comprising a keyboard with function switches; a display section and assorted logic and power circuitry to sequentially display a worded message.

REFERENCES:
patent: 2146576 (1939-01-01), Haselton et al.
patent: 3641390 (1972-02-01), Nakamura
patent: 3845473 (1974-10-01), Kawashima
patent: 3925779 (1975-12-01), Gerstenhaber
patent: 3932859 (1976-01-01), Kyriakides et al.
patent: 3976995 (1976-08-01), Sebestyen
patent: 4070664 (1978-01-01), Abe
patent: 4075621 (1978-02-01), Salmon
patent: 4095046 (1978-06-01), Frutiger et al.
Newell, Beynon, Brumfitt and Hossain, "An Alphanumeric Display as a Communication Aid for the Dumb," Medical and Biological Engineering, Jan. 1975, pp. 84-88.
Hamburger, "Electroluminescent Typewriter," N.E.C. vol. 15, pp. 575-584, 1959.

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