05586196 is referenced by 54 patents and cites 25 patents.

A digital document magnifier for scanning and digitizing printed information, processing the information, and displaying the processed information on a display screen is provided. The digital document magnifier software analyzes the contents of a document and then automates presentation of the document to a viewer. The system includes a microprocessor for processing the scanned information, and displayable video memory for storing information to be displayed. The video memory is organized as a two-dimensional circular display buffer. The two-dimensional buffer is used to zoom incrementally an image to the display screen as necessary. The magnifier can provide either one data bit per pixel for a monochrome display, or four data bits per pixel for a color or greyscale display. Methods for scaling coordinates between a source image bitmap buffer and a two-dimensional circular display buffer also are provided. The methods include dynamically re-mapping page geometry to obtain continuous line effects and continuous column effects.

Digital document magnifier
Application Number
Publication Number
Application Date
January 31, 1994
Publication Date
December 17, 1996
Michael Sussman
51 Myrtle Ter., Winchester, 01890
Fish & Neave
G Victor Treyz
Richard A Inz
G06K 9/00
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