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OwnerMatteo Paolo Bogana, Andrea Celani +1inventors
InventorsMatteo Paolo Bogana, Andrea Celani, Nicolò Pastore
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The present invention relates to a method and a Multi-Touch controller for determining multiple touch inputs on a resistive touch screen, such screen having a first layer (2A) and a second layer (2B) with a first axis (2C) and a second axis (2D) orthogonal to each other being definable thereat, and wherein said first layer is designed to be touched. Particularly, the method includes the steps of touching the first layer (2A) at a first point (P1), while also touching said first layer (2A) at a second point (P2), determining the coordinates of a midpoint (POx, POy) relative to the coordinates of said first point (P1) and said second point (P2). It also includes the steps of powering the first layer (2A) with a voltage value (Vcc), while said first layer (2A) is touched at said first point (P1) and said second point (P2) respectively; detecting a first value of current (I2;X) circulating in said first layer (2A), when the latter is powered with said predetermined voltage value (Vcc); processing said first current value (1̂x) to determine a first value (Δx) of the coordinate difference along an axis (2C) of the first layer (2A) between the coordinates of said first touch point (P1) and said second touch point (P2); processing said first value (Δx) and the coordinates of said midpoint (P0x,P0y) to determine the coordinates of said first touch point (P1) and said second touch point (P2) along said axis (2C) of the first layer (2A).
A method for determining multiple touch inputs on a resistive touch screen, such screen having a first layer (2A) defining a first axis (2C) and a second layer (2B) defining a second axis (2D), said first axis (2C) and said second layer (2B) being orthogonal to each other, and wherein said first layer is designed to be touched, the method including the steps of:
A method for determining the pressure value at least at one touch point (P1, P2) on a resistive touch screen, such screen having a first layer (2A) and a second layer (2B) with a first axis (2C) and a second axis (2D) orthogonal to each other, being definable thereat, and wherein said first layer (2A) is designed to be touched, the method comprising the steps of:
A multiple touch controller operably associated to a resistive touch screen having a plurality of resistance lines (X+, X−, Y+, Y−) comprising:
Dependencies are inferred from the claim text.