Method and device for dual-differential sensing
First Claim
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1. A dual-differential sensing method, comprising:
- providing a sensing device, including;
a first sensor sending a first signal value;
a second sensor sending a second signal value; and
a third sensor sending a third signal value;
calculating a dual difference value by subtracting twice of said second signal value from the sum of said first signal value and said third signal value or subtracting the sum of said first signal value and said third signal value from twice of said second signal value; and
obtaining a sensing result based on a dual differential sensing information, and determining each location on said sensing device touched or approached by at least one external object according to said sensing result;
wherein said dual differential sensing information comprises said dual difference value, and said sensing result has two zero-crossings corresponding to a touch or proximity of an external object.
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Abstract
A method and device for dual-differential sensing is disclosed. The sensing information can be generated from signals provided by a sensing device with a plurality of sensors. Each value of the sensing information corresponds to signals of three sensors, respectively. The sensing device is flexible and configured on a display. The noise effect of the display on the signal of each sensor corresponds to the distance between the display and the sensor. Besides, the noise effect of the display on each value of the sensing information corresponds to the distances between the display and the three sensors, respectively.
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10 Claims
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1. A dual-differential sensing method, comprising:
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providing a sensing device, including; a first sensor sending a first signal value; a second sensor sending a second signal value; and a third sensor sending a third signal value; calculating a dual difference value by subtracting twice of said second signal value from the sum of said first signal value and said third signal value or subtracting the sum of said first signal value and said third signal value from twice of said second signal value; and obtaining a sensing result based on a dual differential sensing information, and determining each location on said sensing device touched or approached by at least one external object according to said sensing result; wherein said dual differential sensing information comprises said dual difference value, and said sensing result has two zero-crossings corresponding to a touch or proximity of an external object. - View Dependent Claims (2, 3, 4, 5)
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6. A dual-differential sensing device, comprising:
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a sensing device including; a first sensor sending a first signal value; a second sensor sending a second signal value; and a third sensor sending a third signal value; wherein said sensing device defines a dual difference value by subtracting twice of said second signal value from the sum of said first signal value and said third signal value or subtracting the sum of said first signal value and said third signal value from twice of said second signal value; and a controller for obtaining a sensing result based on a dual differential sensing information, and determining each location on said sensing device touched or approached by at least one external object according to said sensing result; wherein said dual differential sensing information comprises said dual difference value, and said sensing result has two zero-crossings corresponding to a touch or proximity of an external object. - View Dependent Claims (7, 8, 9, 10)
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Specification