Algorithmic compensation system and method therefor for a...

G - Physics – 08 – C

Patent

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G08C 21/00 (2006.01) G06F 3/033 (2006.01)

Patent

CA 2242663

A general method is described for producing an inexpensive touchscreen system that provides accurate positional information and compensates for manufacturing variations without complicated sensor arrangements. Utilizing a set of sensed signals (160) that are unique to each location on the touchscreen sensor, equations for X and Y (162) are derived via curve fitting methods. The coefficients (163) of the equations are stored with the sensor. During touchscreen operation the coefficients are used to calculate X and Y (164) to the desired accuracy directly and independently.

L'invention porte sur un procédé général de production d'un système économique d'écran tactile fournissant des informations précises de positionnement et assurant une compensation des variations de fabrication sans nécessiter de dispositifs compliqués de détection. Partant d'un ensemble de signaux détectés (160) propres à chacun des emplacements du détecteur de l'écran tactile, on dérive des équations pour X et Y (162) par des méthodes de lissage, les coefficients (163) des équations étant emmagasinés dans le détecteur. Pendant les opérations tactiles, on utilise ces coefficients pour calculer X et Y (164) avec la précision voulue, directement et de façon indépendante.

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