Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1994-03-04
1999-07-27
Wu, Xiao
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345157, 345159, G09G 508
Patent
active
059298405
ABSTRACT:
A system for preventing inadvertent wrapping of a cursor generated on a computer display detects the location of the cursor in proximity with a border of the display and determines whether a user actually intends the cursor to wrap to the opposite side of the display. The system considers a variety of factors to determine whether the user actually intends to wrap the cursor. The time for which the user moves the cursor against the border, the distance that the cursor would have moved but for the border, and the velocity or acceleration with which the cursor approaches the border can all be considered by the system in determining whether or not to permit the wrapping of the cursor. The system automatically generates an indicator signal to permit the cursor to wrap from one side of the display to the opposite side. The user can select the size of the border and determine whether the border will have a color different from the normal display background color to visually indicate the location of the border to the user. The system can selectively enable and disable the border in response to a variety of factors. The user can manually generate the indicator signal by activating a command signal input. The system can operate in a graphical environment where a plurality of display windows are shown on the computer display. The system defines a border for each window to prevent the inadvertent wrapping of the cursor.
REFERENCES:
patent: 5195179 (1993-03-01), Tokunaga
patent: 5208906 (1993-05-01), Morgan
patent: 5263134 (1993-11-01), Paal et al.
patent: 5519827 (1996-05-01), Mizushima
Brewer Timothy T.
Claflin Anthony R.
Henderson, Jr. Paul E.
McRobert Alan W.
Robertson Kenneth R.
Microsoft Corporation
Wu Xiao
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