Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Patent
1995-04-17
1998-02-10
Nguyen, Chanh
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
345904, 399 11, G09G 500
Patent
active
057174334
ABSTRACT:
A touch screen display having a display surface composed of a touch screen, on which screens can be selectively displayed by touching the touch screen in an interactive manner. The touch screen display does not take time in executing a program and ensures high display response performance. A location specified by a touch on the display surface of a plasma display is detected in a touch detecting circuit by detecting a mesh number which is allocated to each of mesh regions into which the whole display surface is divided by a virtual mesh. By a switch filter, when the detected mesh number corresponds to other locations than those of control instruction indicia each displayed in the form of an operation button on the screen displayed on the display surface, the mesh number is invalidated. On the other hand, when the mesh number corresponds to the location of any one of the control instruction indicia, the mesh number is validated. The control instruction indicium selected by a touch is identified by the switch filter for assigning a switch number corresponding to the selected control instruction indicium to the mesh number, whereby a desired screen switching process can be accomplished.
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Komatsu Ltd.
Nguyen Chanh
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