Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1993-07-27
1995-12-12
Hjerpe, Richard
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345141, 345901, 36470912, G06F 314
Patent
active
054753996
ABSTRACT:
A hand held portable reading unit having a screen capable of presenting characters in variable font sizes is provided for readers, such as the visually impaired, allowing them to read characters in a font size most comfortable to them. The reader effects font size changes by depressing a font size select button, in turn activating a counter incremented the number of times the button has been depressed to generate the corresponding size font desired. The incremented counter may be used to address a particular place in memory where bit-mapped characters of different font sizes are stored or may be used as a scalar inputted into a character scaling algorithm to generate a desired character font size. The stored textual data may further be presented in useable form to the blind wherein an audible processor is utilized to convert the stored character code into audible signals inputted into a speaker.
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Fischetti Joseph A.
Hjerpe Richard
Saras Steven J.
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