Eye-motion operable keyboard-accessory

Details Eye-motion operable keyboard-accessory Eye-motion operable keyboard-accessory

1975-11-03

1976-10-12

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

197 98, 250209, 250215, 250221, 340365P, B41J 508, G01D 2104, G06M 700, G08C 100

Patent

active

039860302

ABSTRACT:
An eye-motion operable keyboard-accessory includes light source means for directing a light ray at an eye of an operator, for obtaining a light reflection therefrom, and a plurality of light-responsive sensors selectively actuable by the operator-reflected light ray. The sensors are connected to electrically operable key means disposed on a keyboard for actuation of the former upon the operator-reflected light ray striking one of the light-responsive sensors.

REFERENCES:
patent: 3064552 (1962-11-01), Ehrsam, Jr. et al.
patent: 3340401 (1967-09-01), Young
patent: 3379885 (1968-04-01), Nork
patent: 3507988 (1970-04-01), Holmes
patent: 3678283 (1972-07-01), LaBaw
patent: 3806725 (1974-04-01), Leitz

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