Method and device for determining impedance of depression
First Claim
Patent Images
1. A method for determining impedance of depression, comprising:
- providing a plurality of intersecting regions constituted by a plurality of intersecting conductive stripes, wherein a pair of depressed conductive stripes intersected in an intersecting region from a contact point due to electrical contact so as to define a depressed intersecting region; and
determining a contact impedance, wherein the contact impedance of each depressed intersecting region is determined based on the potentials at the contact point of one and the other of the pair of conductive stripes or the position of the contact point, wherein the determination of contact impedance further comprises;
determining a first dimensional location and a second dimensional location of the contact point, and determining a first dimensional impedance and a second dimensional impedance based on the first dimensional location and the second dimensional location;
detecting a first contact potential and a second contact potential of one and the other of the pair of conductive stripes when providing high and low potentials to one and the other of the pair of conductive stripes, respectively; and
determining the contact impedance according to the first dimensional impedance, the second dimensional impedance, the high potential, the low potential, the first contact potential, and the second contact potential.
1 Assignment
0 Petitions
Accused Products
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 on a contact point to form a depressed intersecting region, wherein the contact impedance of the contact point is determined according to the position of the contact point and the voltages on the contact point of one and the other of the pair depressed strips.
42 Citations
8 Claims
-
1. A method for determining impedance of depression, comprising:
-
providing a plurality of intersecting regions constituted by a plurality of intersecting conductive stripes, wherein a pair of depressed conductive stripes intersected in an intersecting region from a contact point due to electrical contact so as to define a depressed intersecting region; and determining a contact impedance, wherein the contact impedance of each depressed intersecting region is determined based on the potentials at the contact point of one and the other of the pair of conductive stripes or the position of the contact point, wherein the determination of contact impedance further comprises; determining a first dimensional location and a second dimensional location of the contact point, and determining a first dimensional impedance and a second dimensional impedance based on the first dimensional location and the second dimensional location; detecting a first contact potential and a second contact potential of one and the other of the pair of conductive stripes when providing high and low potentials to one and the other of the pair of conductive stripes, respectively; and determining the contact impedance according to the first dimensional impedance, the second dimensional impedance, the high potential, the low potential, the first contact potential, and the second contact potential. - View Dependent Claims (2, 3, 4)
-
-
5. A method for determining impedance of depression, comprising:
-
providing a plurality of intersecting regions constituted by a plurality of intersecting conductive stripes, wherein a pair of depressed conductive stripes intersected in an intersecting region from a contact point due to electrical contact so as to define a depressed intersecting region; determining a contact impedance, wherein the contact impedance of each depressed intersecting region is determined based on the potentials at the contact point of one and the other of the pair of conductive stripes or the position of the contact point; determining a depression on each depressed intersecting region; determining a total contact impedance for each depression, wherein the total contact impedance is the parallel impedance of contact impedances of all depressed intersecting regions corresponding to the same depression; regarding the depression as do not exist when the total contact impedance of the depression is smaller than a threshold value; and determining a depression location of each depression which is not yet regarded as do not exist, wherein the depression location is determined based on the contact points on all depressed intersecting regions corresponding to each depression. - View Dependent Claims (6)
-
-
7. A method for determining impedance of depression, comprising:
-
providing a plurality of intersecting regions constituted by a plurality of intersecting conductive stripes, wherein a pair of depressed conductive stripes intersected in an intersecting region from a contact point due to electrical contact so as to define a depressed intersecting region; determining a contact impedance, wherein the contact impedance of each depressed intersecting region is determined based on the potentials at the contact point of one and the other of the pair of conductive stripes or the position of the contact point; determining a depression on each depressed intersecting region; determining a total contact impedance for each depression, wherein the total contact impedance is the parallel impedance of contact impedances of all depressed intersecting regions corresponding to the same depression; and tracing subsequent depressions of each depression based on the total compact impedance of each depression, wherein the differences of total compact impedances of each depression and its each subsequent depression will be within a predetermine range, and the depressed intersecting regions corresponding to the same depression will be neighboring intersecting regions. - View Dependent Claims (8)
-
Specification