Coordinate input apparatus

Details Coordinate input apparatus Coordinate input apparatus

1987-07-20

1989-10-03

Brigance, Gerald

Communications: electrical

Land vehicle alarms or indicators

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

34081531, G09G 302

Patent

active

048720003

ABSTRACT:
A coordinate input apparatus which comprises a display unit having a display layer, and a protecting layer disposed on said display layer and having two-dimensionally arranged light guides for transmitting light from the display layer in the direction substantially perpendicular to the display layer, wherein a user designates a coordinate position on the display layer through the protecting layer.

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patent: 4694221 (1987-09-01), Rosier
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