Graphical input apparatus for electrical equipment

Details Graphical input apparatus for electrical equipment Graphical input apparatus for electrical equipment

1978-03-08

1979-04-10

Robinson, Thomas A.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

041490290

ABSTRACT:
A graphical input tablet is disclosed in which the lower surface of a sheet is spaced from the upper surface of a fixed member. Each or both surfaces are formed by parallel conductors but where only one surface is formed in this way the other surface is resistive. Currents are passed alternately through the surfaces to provide voltage gradients, and when a stylus is used to indicate a point, alternate co-ordinate signals for the point are obtained.

REFERENCES:
patent: 2907824 (1959-10-01), Peek, Jr.
patent: 2975235 (1961-03-01), Leitner et al.
patent: 3304612 (1967-02-01), Proctor et al.
patent: 3308253 (1967-03-01), Krakinowski
patent: 3440522 (1969-04-01), Kruse
patent: 3885097 (1975-05-01), Pobgee
patent: 3925610 (1975-12-01), French et al.
patent: 3959585 (1976-05-01), Mattes et al.
patent: 4013835 (1977-03-01), Eachus et al.
patent: 4080514 (1978-03-01), Pobgee

Affiliated with

Also associated with

Rating

Graphical input apparatus for electrical equipment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Graphical input apparatus for electrical equipment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Graphical input apparatus for electrical equipment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1072942