Information input apparatus having functions of both touch panel

Details Information input apparatus having functions of both touch panel Information input apparatus having functions of both touch panel

1995-04-12

1997-09-23

Kuntz, Curtis

Telegraphy

Systems

Position coordinate determination for writing

345156, 345173, G08C 2100

Patent

active

056707550

ABSTRACT:
An information input apparatus having both functions of touch panel and digitizer is disclosed including a stylus pen for applying a power source and for touching, a panel having upper and lower substrates, a first resistive layer formed on the upper substrate, a second resistive layer formed on the lower substrate, and a spacer for maintaining a predetermined distance and insulation between the first and second resistive layers, and mode selection means for selectively switching between ground and a power source for contact with the second resistive layer, to thereby select an operation mode for operating the panel as a touch panel or digitizer.

REFERENCES:
patent: 4293734 (1981-10-01), Pepper, Jr.
patent: 4933660 (1990-06-01), Wynne, Jr.

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