Method and apparatus of position location
First Claim
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1. An apparatus for sensing the location of user input comprising:
- a display unit comprising;
a screen having a resistive coating disposed on said surface;
pre-existing internal signal generation means for providing a pre-existing signal emanating from said screen through said resistive coating;
a sensor array disposed about said screen;
sensing electronics coupled to said sensor array; and
said sensing electronics being configured to determine the location of user input on said screen by sensing localized deviations in the amplitude of said pre-existing signal.
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Abstract
An apparatus for sensing the location of user input is disclosed. The apparatus may include a display unit including a screen having a resistive coating disposed on its surface. The apparatus may utilize a sensing signal emanating from the screen through the resistive coating. A sensor array may be disposed about the screen, and sensing electronics are provided to determine the location of user input on the screen by sensing localized deviations in the amplitude of the sensing signal.
57 Citations
15 Claims
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1. An apparatus for sensing the location of user input comprising:
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a display unit comprising;
a screen having a resistive coating disposed on said surface;
pre-existing internal signal generation means for providing a pre-existing signal emanating from said screen through said resistive coating;
a sensor array disposed about said screen;
sensing electronics coupled to said sensor array; and
said sensing electronics being configured to determine the location of user input on said screen by sensing localized deviations in the amplitude of said pre-existing signal. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9)
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4. An apparatus for sensing the location of user input comprising:
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a display unit comprising;
a screen having a resistive coating disposed on said surface;
signal generation means for providing a sensing signal emanating from said screen through said resistive coating;
a sensor array disposed about said screen;
sensing electronics coupled to said sensor array; and
said sensing electronics being configured to determine the location of user input on said screen by sensing localized deviations in the amplitude of said sensing signal.
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10. An apparatus for sensing the location of user input comprising:
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a display unit comprising;
a screen having a resistive coating disposed on said surface;
pre-existing internal signal generation means for providing a pre-existing signal emanating from said screen through said resistive coating;
microprocessor sensor signal generating means for generating a sensor signal out of phase with respect to said pre-existing internal signal, said sensor signal generating means further configured to emanate said sensor signal from said resistive coating;
a sensor array disposed about said screen;
sensing electronics coupled to said sensor array; and
said sensing electronics being configured to determine the location of user input on said screen by sensing localized deviations in the amplitude of said sensor signal. - View Dependent Claims (11, 12, 14, 15)
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13. The apparatus of claim 13, wherein said sensing signal is generated having an amplitude independent of the video intensity of said display unit.
Specification