Coordinate inputting device including an electrode to reduce noi

Details Coordinate inputting device including an electrode to reduce noi Coordinate inputting device including an electrode to reduce noi

1989-03-30

1990-01-30

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

367129, 367907, G08C 2100

Patent

active

048975109

ABSTRACT:
A coordinate inputting device in which the vibrations imparted from a vibration pen to a vibration transmitting plate are detected by a plurality of vibration sensors so as to enable the coordinates of a vibration input point to be detected using the time it takes for the vibrations to propagate on the vibration transmitting plate. The vibration transmitting plate has noise interrupting means for preventing noise coexistent with the vibrations imparted by the vibration pair for coordinate detection from being input to the vibration sensor.

REFERENCES:
patent: 4665202 (1987-05-01), Sato et al.

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