Display and input control device
First Claim
1. A data display and input control device for simplifying use of a host computer, the data display and input control device connectable to a display terminal and the host computer, the display terminal including a touch sensitive screen, the data display and input control device comprising:
- a central processing unit having a RAM and a ROM;
a window position RAM storing window position data;
a window display data RAM storing window display data to be displayed on the display terminal;
a keyboard interface connectable to the keyboard connector of the host computer;
a peripheral circuit coupling the central processing unit to the touch sensitive screen; and
an electronic switching device switching in real time data to be displayed by the display terminal between the host computer and the window display data RAM.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic device that simplifies a use of a data processing system. The electronic device displays on a data processing system display device either data from the data processing system or data generated by the electronic device. The electronic device displays data on the display device to allow entry of data to the data processing system by using a touch sensitive screen placed over the display device. The operation of the electronic device is achieved without modification of the data processing system or application software executing in the data processing system.
20 Citations
11 Claims
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1. A data display and input control device for simplifying use of a host computer, the data display and input control device connectable to a display terminal and the host computer, the display terminal including a touch sensitive screen, the data display and input control device comprising:
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a central processing unit having a RAM and a ROM; a window position RAM storing window position data; a window display data RAM storing window display data to be displayed on the display terminal; a keyboard interface connectable to the keyboard connector of the host computer; a peripheral circuit coupling the central processing unit to the touch sensitive screen; and an electronic switching device switching in real time data to be displayed by the display terminal between the host computer and the window display data RAM. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A data display and input control device for simplifying use of a host computer, the data display and input control device connectable to a display terminal and the host computer, the data display and input control device comprising:
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a central processing unit inputting data from the host computer; a window position memory for storing window position data; a window data memory for storing window display data; and an electronic switching means for outputting to the display terminal one of a host computer display data and a central processing unit display data by switching in real time between the host computer and the window data memory. - View Dependent Claims (9, 10)
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11. A method for simplifying use of a host computer, wherein a data display and input control device is connected to a host computer and a display terminal, the method comprising:
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covering the display terminal with a touch sensitive screen; interfacing with a second application without interfering with a main application; generating at least one window to be displayed on the display terminal using the data display and input control device; switching in real time data to be displayed by the display terminal between the host computer and the data display and input control device; displaying on the display terminal the at least one generated window so that the at least one window is visible through the touch sensitive screen; touching the touch sensitive screen at a touched position; outputting the touched position detected by the touch sensitive screen to a central microprocessing unit; generating at least one keystroke based on the touched position and the at least one window visible through the touch sensitive screen; and sending to the host computer the at least one keystroke.
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Specification