Device for two-dimensional localization of events that generate current on a resistive surface
First Claim
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1. A device for two-dimensional localization of current-generating events on a resistive surface, the device comprising:
- a resistive surface;
a plurality of electrodes fixed to the resistive surface around its periphery in order to pick up currents generated by injecting current or electric charge into points on the resistive surface; and
at least three current summing lines connected to the electrodes via discrete resistive components in such a manner as to obtain analog signals on said summing lines whose amplitudes are functions of the co-ordinates of said points in a predetermined reference co-ordinate system;
the device including the improvement whereby;
each of said electrodes is connected by means of respective resistive components to at least three summing lines in such a manner that at least two of the said lines deliver analog signals whose amplitudes are substantially linear functions of the desired co-ordinates.
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Abstract
Electrodes are placed at the periphery of a resistive surface to pick up a current generated at a point on the resistive surface. Each electrode is connected to at least three summing lines via respective resistors each having a fixed resistance value which is predetermined as a function of the summing line and of the electrode in such a manner as to obtain analog signals from at least two of the summing lines which are linear functions of respective co-ordinates (with respect to a predetermined co-ordinate system) of a point on the resistive surface at which current is generated.
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Citations
11 Claims
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1. A device for two-dimensional localization of current-generating events on a resistive surface, the device comprising:
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a resistive surface; a plurality of electrodes fixed to the resistive surface around its periphery in order to pick up currents generated by injecting current or electric charge into points on the resistive surface; and at least three current summing lines connected to the electrodes via discrete resistive components in such a manner as to obtain analog signals on said summing lines whose amplitudes are functions of the co-ordinates of said points in a predetermined reference co-ordinate system; the device including the improvement whereby; each of said electrodes is connected by means of respective resistive components to at least three summing lines in such a manner that at least two of the said lines deliver analog signals whose amplitudes are substantially linear functions of the desired co-ordinates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification