Abstract: According to one embodiment of the present disclosure, a touch controller includes a touch frame processing component adapted to receive sensor signals containing information about a touch point on a touch screen. The touch frame processing component processes the sensor signals to generate touch information associated with each touch point. A touch coordinate processing component is coupled to receive touch information from the touch frame processing component and includes virtual area parameters that define a plurality of virtual areas on the touch screen. The touch coordinate processing component is operable to identify which one of the plurality of virtual areas contains the current touch point and to report or filter the current touch point as a function of the identified virtual area.

Abstract: A touch controller includes a touch frame processing (TFP) component that receives sensor signals containing information about a touch point on a touch screen. The TFP component processes the sensor signals to generate touch information associated with each touch point. The touch information includes a location and the association of one of a touch-in, touch-out, and touch-motion event. A touch coordinate processing (TCP) component receives touch information from the TFP component and determines whether to report the touch information associated with a current touch point. The TCP component determines a difference between the location of the current touch point and a previously detected touch point and assigns a motion status to each touch event and reports the touch information when the difference is greater than a motion tolerance and when less than the motion tolerance selectively blocks or reports the touch information as a function of the corresponding motion status.

Abstract: A touch controller processes a captured data frame and detects the presence of touch points in the data frame. The data frame includes a plurality of digital capacitance values organized as groups of sense line data and the touch controller determines for each digital capacitance value in a group of sense line data the difference between the digital capacitance value and an associated no-touch threshold to generate a baseline delta value for each digital capacitance value in the group. The touch controller selects the minimum baseline delta and adjusts each digital capacitance value in the group by the minimum baseline delta to generate adjusted sense line data. The touch control generates adjusted sense line data for each group of sense line data in the data frame and thereafter processes the groups of adjusted sense line data to detect the presence of touch points in the data frame.

Abstract: According to one embodiment of the present disclosure, a touch controller includes a touch frame processing component adapted to receive sensor signals containing information about a touch point on a touch screen. The touch frame processing component processes the sensor signals to generate touch information associated with each touch point. A touch coordinate processing component is coupled to receive touch information from the touch frame processing component and includes virtual area parameters that define a plurality of virtual areas on the touch screen. The touch coordinate processing component is operable to identify which one of the plurality of virtual areas contains the current touch point and to report or filter the current touch point as a function of the identified virtual area.

Abstract: A touch controller processes a captured data frame and detects the presence of touch points in the data frame. The data frame includes a plurality of digital capacitance values organized as groups of sense line data and the touch controller determines for each digital capacitance value in a group of sense line data the difference between the digital capacitance value and an associated no-touch threshold to generate a baseline delta value for each digital capacitance value in the group. The touch controller selects the minimum baseline delta and adjusts each digital capacitance value in the group by the minimum baseline delta to generate adjusted sense line data. The touch control generates adjusted sense line data for each group of sense line data in the data frame and thereafter processes the groups of adjusted sense line data to detect the presence of touch points in the data frame.

Abstract: A touch controller includes a touch frame processing (TFP) component that receives sensor signals containing information about a touch point on a touch screen. The TFP component processes the sensor signals to generate touch information associated with each touch point. The touch information includes a location and the association of one of a touch-in, touch-out, and touch-motion event. A touch coordinate processing (TCP) component receives touch information from the TFP component and determines whether to report the touch information associated with a current touch point. The TCP component determines a difference between the location of the current touch point and a previously detected touch point and assigns a motion status to each touch event and reports the touch information when the difference is greater than a motion tolerance and when less than the motion tolerance selectively blocks or reports the touch information as a function of the corresponding motion status.