RESISTIVE TOUCH APPARATUS
First Claim
1. An apparatus, comprising:
- a first resistive sheet;
a second resistive sheet, the second resistive sheet is disposed in proximity to the first resistive sheet, such that pressure applied at a first touch point and at a second touch point on the first resistive sheet causes flow of electrical current between the first resistive sheet and the second resistive sheet;
a control unit coupled to a first terminal and to a second terminal, and configured to measure a first resistance between the first terminal and the second terminal; and
configured to estimate a distance between the first touch point and the second touch point.
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Accused Products
Abstract
The subject matter discloses an apparatus, comprising a first resistive sheet and a second resistive sheet disposed in proximity to the first resistive sheet, such that pressure applied at a first touch point and at a second touch point on the first resistive sheet causes flow of electrical current between the first resistive sheet and the second resistive sheet. The apparatus further comprises a control unit coupled to a first terminal and to a second terminal, and configured to measure a first resistance between the first terminal and the second terminal; and configured to estimate a distance between the first touch point and the second touch point. The apparatus further estimates the location of the first touch point and the second touch point.
32 Citations
16 Claims
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1. An apparatus, comprising:
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a first resistive sheet; a second resistive sheet, the second resistive sheet is disposed in proximity to the first resistive sheet, such that pressure applied at a first touch point and at a second touch point on the first resistive sheet causes flow of electrical current between the first resistive sheet and the second resistive sheet; a control unit coupled to a first terminal and to a second terminal, and configured to measure a first resistance between the first terminal and the second terminal; and configured to estimate a distance between the first touch point and the second touch point. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for estimating a distance between a first touch point and a second touch point on a resistive sheet, the method comprising:
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measuring a first resistance value between two terminals connected to the resistive sheet selected from a group consisting of a first resistive sheet and a second resistive sheet; and estimating the distance between the first touch point and the second touch point based on the resistance value. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification