Touch input device
First Claim
1. A touch input device comprising:
- a touch panel receiving a touch trace formed by touching the touch panel, wherein the touch trace comprises at least one touch point;
a driving and sensing circuit driving the touch panel and sensing an actual signal value Vi of the at least one touch point, wherein if an actual contact area Ai of the at least one touch point is a basic contact area Ao, the actual signal value Vi of the at least one touch point is Voi;
a data memory storing a look up table comprising a plurality of position coordinates on the touch panel and a plurality of calibrating rules f, each of the calibrating rules f corresponding to each of the position coordinates, and used to convert Voi of the at least one touch point of the basic contact area Ao in the position coordinate to a standard signal value Vs, wherein the converting process is represented by f(Voi)=Vs, the calibrating rules f performing a function of Voi; and
a processor calculating the position coordinate and calibrating the actual signal value Vi of the at least one touch point to a calibrated signal value V′
i by a corresponding calibrating rule f, wherein the calibrating process is represented by f(Vi)=V′
i, and wherein the calibrated signal value (V′
i) is related to the actual contact area of the at least one touch point, and unrelated to the position coordinate of the at least one touch point.
2 Assignments
0 Petitions
Accused Products
Abstract
A touch input device includes a touch panel, a driving and sensing circuit, a data memory, and a processor. The touch panel is adapted to receive a touch trace including at least one touch point. The driving and sensing circuit is adapted to drive the touch panel and detect actual signal value Vi. The data memory is adapted to store a look up table including a plurality of position coordinates and a plurality of calibrating rules f each corresponding to each of the position coordinates. Each of the calibrating rules f can be used to convert actual signal value V0i of the touch point of a basic contact area A0 to a standard signal value Vs. The processor is adapted to calculate the position coordinate and calibrate the actual signal value Vi of the at least one touch point to a calibrated signal value V′i.
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Citations
16 Claims
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1. A touch input device comprising:
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a touch panel receiving a touch trace formed by touching the touch panel, wherein the touch trace comprises at least one touch point; a driving and sensing circuit driving the touch panel and sensing an actual signal value Vi of the at least one touch point, wherein if an actual contact area Ai of the at least one touch point is a basic contact area Ao, the actual signal value Vi of the at least one touch point is Voi; a data memory storing a look up table comprising a plurality of position coordinates on the touch panel and a plurality of calibrating rules f, each of the calibrating rules f corresponding to each of the position coordinates, and used to convert Voi of the at least one touch point of the basic contact area Ao in the position coordinate to a standard signal value Vs, wherein the converting process is represented by f(Voi)=Vs, the calibrating rules f performing a function of Voi; and a processor calculating the position coordinate and calibrating the actual signal value Vi of the at least one touch point to a calibrated signal value V′
i by a corresponding calibrating rule f, wherein the calibrating process is represented by f(Vi)=V′
i, and wherein the calibrated signal value (V′
i) is related to the actual contact area of the at least one touch point, and unrelated to the position coordinate of the at least one touch point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification