Data terminals having interactive keyboards and displays and dat

Details Data terminals having interactive keyboards and displays and dat Data terminals having interactive keyboards and displays and dat

1974-07-11

1977-06-07

Curtis, Marshall M.

Communications: electrical

Audible indication

Percussion-type sound producer

340324A, 35 6, G06F 314

Patent

active

040286959

ABSTRACT:
The data terminal is manually operable and is intended for communicating with a data processor. The terminal has a keyboard having a plurality of manually selectable keys, each of which represents a respective message to be communicated to the processor. A display is provided having a plurality of zones each corresponding to a respective key of the keyboard, and the display is arranged to display in each zone an indication of the message represented by the key corresponding to that zone. The keys are in the form of touch keys. Merely touching a key serves to manually select that key, and causes the visual appearance of the display to change, so as to indicate which key is selected. This change may for example be a reversal of the relative brightness of the corresponding zone of the display e.g. dark on light instead of light on dark. Actually depressing the key, as opposed to just touching it, produces an output signal for communicating the message represented by the selected key to the processor.

REFERENCES:
patent: 1984599 (1934-12-01), Safar
patent: 3187321 (1965-06-01), Kameny
patent: 3220000 (1965-11-01), Lesage
patent: 3480945 (1969-11-01), Nelson
patent: 3500327 (1970-03-01), Belcher et al.
patent: 3609743 (1971-09-01), Lasoff et al.
patent: 3670322 (1972-06-01), Mallebrein
patent: 3815127 (1974-06-01), Blumke

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