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:
Mar. 27, 1990
Filed:
Jun. 08, 1988
Richard J Ditzik, San Diego, CA (US);
Other;
Abstract
An interactive electro-optic display device used in combination with a transparent graphics tablet device providing an electronic writing surface for an integrated display-tablet operation. A person using the system can hand sketch, write, and draw onto an electronic writing surface, and the system converts this information to electrical signals for display on a viewing screen directly under the transparent graphic tablet. Hand written information from the tablet and alphanumeric information from a keyboard can be transmitted external to the display-tablet unit, and the unit is capable of receiving externally generated data for presentation on the display panel. The invention can be used as a computer-based communications terminal for two-way graphic and voice data. The disclosed display device is a direct view optical beam addressed electrooptic display device, having one or more laser sources, an optical beam deflector, an electrooptic display panel, and control electronics. The graphic tablet and keyboard are electrically connected to the control electronics for an integrated operation. A folded optical path design results in an inclined writing surface and display screen combination, which provide the advantages of improved man-machine interaction and display readability.