Coordinate input device

Details Coordinate input device Coordinate input device

1998-02-20

2000-08-15

Au, Amelia

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

178 1801, 178 1806, G09G 500

Patent

active

061043869

ABSTRACT:
A coordinate input device of a low manufacturing cost is to be provided using a position detector and an arithmetic unit of simple configurations. The coordinate input device comprises a contact type coordinate detecting section provided with a first substrate having a plurality of X electrodes arranged in parallel in X-axis direction and a second substrate having a plurality of X electrodes arranged in parallel in X-axis direction, the first and second substrates being disposed in proximity to each other, and some of the X and Y electrodes being rendered conductive by a pushing operating of an operating means, a scanning section which provides scanning signals successively to the X electrodes, a position detecting section which outputs detection signals from the Y electrodes during scanning of the X electrodes, and an arithmetic section which calculates X and Y coordinate positions on the basis of both scanning signals and detection signals. The X and Y coordinate positions calculated by the arithmetic section correspond to central coordinate positions operated by the operating means and detected from the differences between conducted maximum X, Y coordinate positions and minimum X, Y coordinate positions.

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