Interactive display devices

Details Interactive display devices Interactive display devices

1979-05-14

1981-05-19

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

178 18, 340365P, 340782, G06F 3147

Patent

active

042688264

ABSTRACT:
An interactive display device is of the type which displays data and allows an operator to input fresh data and/or change the data that is displayed. The data is displayed by a plurality of arrays of discrete display elements each of which can be independently driven to produce an optical output, and the interactive input is by means of a light pen or "wand" which detects light and which the operator points at the display element associated with the data to which the desired input relates. Driver circuit means scan the arrays of said plurality thereof simultaneously with signals which determine whether each display element is in the ON or OFF state. These scanning signals include coded pulses the coding of which is representative of the particular array being scanned thereby. Means for inputting data comprise said light pen and associated circuit means operative to identify the coded pulses and thus identify the array containing the selected display element.

REFERENCES:
patent: 3579225 (1971-05-01), Clark
patent: 3768073 (1973-10-01), Rawson et al.
patent: 3832693 (1974-08-01), Ishizaki et al.
patent: 3932862 (1976-01-01), Graven

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