Graphic communications apparatus

Details Graphic communications apparatus Graphic communications apparatus

1978-04-17

1979-12-04

Robinson, Thomas A.

Telegraphy

Systems

Position coordinate determination for writing

250213A, 340707, G08C 2100

Patent

active

041773543

ABSTRACT:
A light-spot-emitting stylus (21) is utilized by an operator to write graphical information on the surface of a simple multilayer planar transducer device (10) that includes a photoconductive layer (16) sandwiched between a transparent conductive layer (14) and a resistive layer (18) that includes spaced-apart electrodes (23 through 32 . . . ). In response to the writing spot, the transducer device generates electrical output signals indicative of successive coordinate positions of the spot on the transducer surface. In turn, these signals are transmitted to a remote location where the originally written graphical information is reconstructed. Moreover, by positioning the transducer on the face of a display unit (51), the information being written on the transducer can be viewed by the operator during the writing process.

REFERENCES:
patent: 3522664 (1970-08-01), Lambright et al.
patent: 3699439 (1972-10-01), Turner
patent: 3723977 (1973-03-01), Schaufele
patent: 3740734 (1973-06-01), Maldonado
patent: 3944740 (1976-03-01), Murase et al.
patent: 4055726 (1977-10-01), Turner et al.

Affiliated with

Also associated with

Rating

Graphic communications apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-92258