Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1992-06-11
1994-01-11
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
359 48, 345104, G09G 336
Patent
active
052785459
ABSTRACT:
A combined backlighting panel, position determination system, and display for use in pen-driven computer systems. There is a panel of a transparent material divided into a plurality of illumination areas. Each of the illumination areas comprises a lensing structure on the bottom surface of the panel for directing entering light towards the top surface of the panel over the associated illumination area. A plurality of light-emitting diodes are disposed to direct light into the lensing structure of respective ones of the plurality of illumination areas. A substrate carries the grids of a digitizer tablet as well as the light emitting diodes. The panel is disposed on the substrate with the bottom surface adjacent the substrate. A display panel is disposed over the top surface of the panel.
REFERENCES:
patent: 4263594 (1981-04-01), Masucci
patent: 4330813 (1982-05-01), Deutsch
patent: 5008658 (1991-04-01), Russay
patent: 5016956 (1991-05-01), Gasparaitis
patent: 5075789 (1991-12-01), Jones
patent: 5153386 (1992-10-01), Siefer
Oberley Alvin E.
Oh Minsun
Showa Hatsumei Kaisha, Ltd.
Streck Donald A.
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