Backlit digitizer tablet

Details Backlit digitizer tablet Backlit digitizer tablet

1989-06-23

1990-07-24

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

178 19, 362 33, 362 97, G08C 2100, G09F 1304

Patent

active

049436899

ABSTRACT:
A backlit digitizer tablet providing uniform illumination of the working surface, comprising biaxial fluorescent lamps supplying wide-area light emission under a sandwich top construction including an apertured shield electrode, a first clear spacer, an electrode array, a second clear spacer, and a translucent top, with optically transparent support means for the top.

REFERENCES:
patent: 4206314 (1978-08-01), Prugh et al.
patent: 4654762 (1987-03-01), Laverick

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