ADAPTIVE POWER SAVE MODE FOR A TOUCH CONTROLLER

Abstract: according to an embodiment, a method for operating a touchscreen in active mode is provided. a regression analysis, generating a set of coefficients, is performed on inputs from a respective row of a matrix of sensors at a time instant k. an output matrix is generated by applying a filter transform based on a comparison between the set of coefficients and first threshold values. a touch analysis is performed based on the output matrix. a frame drop analysis is performed to determine whether to skip the current frame for the touch analysis based on a comparison of the set of coefficients and second threshold values. a touch delay analysis is performed to determine whether to change a result of a first number of subsequent frames for the touch analysis based on a comparison of the set of coefficients and third threshold values.

Inventor(s): Ta-Jung Tsai

CPC Classification: G06F1/3262 (Means for saving power)

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