Telegraphy – Systems – Position coordinate determination for writing
Patent
1984-11-29
1986-11-11
Schreyer, Stafford D.
Telegraphy
Systems
Position coordinate determination for writing
G08C 2100
Patent
active
046224378
ABSTRACT:
An improved touch-panel and method of increasing the percentage of useful area of a touch-sensitive panel include electrode elements in electrical communication with an electrically conductive layer of known spatial impedance characteristics. The touch-panel structure incorporates improved electrode structure and electrode to impedance layer interfacing elements which impart a more linear mapping function within an expanded touch-sensitive region of the resistive layer. The touch-panel can be utilized in a general touch-mapping system without resort to extensive mapping coordinate correction apparatus of earlier systems.
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