Character scrolling method and apparatus
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United States of America Patent
Stats
-
Dec 19, 1995
Issued Date -
N/A
app pub date -
Apr 7, 1992
filing date -
Apr 11, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for scrolling, at a desired rate and in a given direction, a graphic character on a display having a predetermined number of actual scan lines and a vertical blanking interval occurring between successive display of all the actual horizontal scan lines of the display, involves the creation of fractional scan lines between successive vertical blanking intervals, the identification of leading and trailing edges of the character and the selective changing of the color or shading of pixels of the leading and trailing edges to effect scolling of the character.
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Cited Art Landscape
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