Method and Device for Position Detection
First Claim
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1. A device for position detection, comprising:
- a sensor including a plurality of conductive stripes constituting a plurality of intersecting regions, wherein a pair of conductive stripes intersected in an intersecting region form a contact point due to electrical contact so as to define a depressed intersecting region;
a driver for providing a high potential and a low potential;
a detector for detecting a signal of at least one conductive stripe;
a selector for operatively coupling the conductive stripes with the driver and the detector; and
a controller for controlling the driver, the detector and the selector to perform at least the following operations;
determining each depression on the intersecting regions; and
determining a total contact impedance for each depression, wherein the total compact impedance for a depression that crosses intersecting regions is the parallel impedance of contact impedances of all intersecting regions that are crossed by the depression.
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Abstract
A method and the device for position detection are disclosed. The device comprises a plurality of strips intersecting each other to form a plurality of intersecting regions. A pair of depressed strips intersecting on an intersecting region contact to each other to form a depressed intersecting region. According to the depressed intersecting regions, each depression can be determined. The total contact impedance of a depressing crossover a plurality of intersecting regions is the parallel contact impedance of the contact impedances of all intersecting regions corresponding to the same depression.
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20 Claims
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1. A device for position detection, comprising:
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a sensor including a plurality of conductive stripes constituting a plurality of intersecting regions, wherein a pair of conductive stripes intersected in an intersecting region form a contact point due to electrical contact so as to define a depressed intersecting region; a driver for providing a high potential and a low potential; a detector for detecting a signal of at least one conductive stripe; a selector for operatively coupling the conductive stripes with the driver and the detector; and a controller for controlling the driver, the detector and the selector to perform at least the following operations; determining each depression on the intersecting regions; and determining a total contact impedance for each depression, wherein the total compact impedance for a depression that crosses intersecting regions is the parallel impedance of contact impedances of all intersecting regions that are crossed by the depression. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for position detection, comprising:
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providing a plurality of intersecting regions constituted by a plurality of intersecting conductive stripes, wherein a pair of conductive stripes intersected in an intersecting region form a contact point due to electrical contact so as to define a depressed intersecting region; determining each depression on the intersecting regions; determining a contact impedance of each intersecting region corresponding to each depression that crosses intersecting regions; and determining a total contact impedance for each depression that crosses intersecting regions, wherein the total contact impedance is the parallel impedance of contact impedances of all intersecting regions corresponding to the same depression. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification