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:
Jul. 19, 1994
Filed:
Oct. 27, 1992
Dan Kikinis, Sunnyvale, CA (US);
Cordata, Inc., Tortola, VG;
Abstract
A photovoltaic film provided with a computer allows the computer to be used as a scanner as well as a conventional computer. In a preferred embodiment the photovoltaic film is transparent, and is applied directly to the display screen of the computer system. The film is connected to signal processing means connected to the internal bus structure of the computer. A hard copy document is positioned adjacent the film, and control routines loaded to and run on the computer control pixel illumination on the computer screen in a scanning protocol. Illumination of pixels in conjunction with characteristics of the hard copy at the pixel position cause the signal generated by the photovoltaic film to alter in voltage. Signals from the film are processed and used to generate a bit pattern as the scanned image. In an alternative embodiment the photovoltaic film is a part of a separate sheet applicable to a computer screen and connectable to an expansion card for connection to the computer, providing a system useful with existing computers.