Coordinate input sheet with correction electrodes

Details Coordinate input sheet with correction electrodes Coordinate input sheet with correction electrodes

1987-02-09

1988-05-17

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

047452420

ABSTRACT:
A coordinate input sheet for use in a coordinate digitizer apparatus has at least one auxiliary electrode disposed between and in parallel with main electrodes provided at opposite ends of a resistance surface. The auxiliary electrode is used to either measure a voltage at its respective position which can be used to correct point contact data generated by said sheet or to apply a voltage to said sheet so that point data generated by said sheet is correct.

REFERENCES:
patent: 4080514 (1978-03-01), Pobgee

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