The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 1994
Filed:
Jun. 11, 1992
Donald A Streck, Kailua, HI (US);
Showa Hatsumei Kaisha, Ltd., Kailua, HI (US);
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.