Touch panel input device

Details Touch panel input device Touch panel input device

1997-04-07

1999-04-27

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

345174, 178 1802, G09G 500

Patent

active

058984267

ABSTRACT:
A touch panel input device includes a touch panel having a lower layer including a resistive conductor and an upper layer including a dielectric, a driving circuit for applying a driving signal to points on the lower layer, a voltage detecting circuit for converting a current flowing through each point into a voltage signal, a switching circuit for switching the voltage signal to generates a coordinate signal, an analog-to-digital converter for converting the coordinate signal into digital coordinate data, and protrusions, each protrusion including a resistive conductor, located on the upper layer of the touch panel.

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patent: 5181030 (1993-01-01), Itaya et al.
patent: 5369228 (1994-11-01), Faust
patent: 5670755 (1997-09-01), Kwon

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