Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1996-07-12
1999-03-02
Bayerl, Raymond J.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345123, 345340, G06F 314
Patent
active
058777610
ABSTRACT:
Text image on a monitor can be scrolled pixel-by-pixel instead of line-by-line or character-by-character. An application window (for showing images generated by an application) and a child window are generated. The text image is drawn on the child window instead of on the application window. The size of the application window is smaller than the child window. Only the portion of the child window overlapping the application window is displayed by a computer screen. If a user desires scrolling, the child window is moved, a pixel at a time, in a direction corresponding to the direction of scrolling. When a full line or a full character is scrolled, the child window clears itself and returns to its original position. At the same time, the text image is scrolled one line or one character on the child window so as to match the pixel-based scrolling. As a result, the user sees a smooth scrolling of a text image.
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Nakajima Ichiro
Shoji Wataru
Tabuchi Daisuke
Bayerl Raymond J.
Chan H. C.
Jackson Chadwick A.
Sofmap Future Design, Inc.
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