Combining touch screen and other sensing detections for user interface control

摘要

A touch sensitive display includes a capacitive touch sensor configured to output capacitance values. A motion sensor makes a motion detection and generates a motion signal including a motion value indicative of sensed motion detection. A touch detection circuit is coupled to receive the capacitance values and motion values. The touch detection circuit processes the capacitance values to make a hovering detection and a touching detection with respect to the display. The touch detection circuit further generates an output signal including the motion value correlated in time with each of the hovering detection and touching detection. The output signal may be processed as a user interface control signal. The output signal may also be processed to determine an impulsive strength of the touching detection as a function of an elapsed time between hover and touch and the measured motion values.

主权项

1. A system, comprising:
a touch sensitive display including a capacitive touch sensor configured to output values indicative of sensed capacitance; a motion sensor configured to make a motion detection and generate a touching detection correlated motion signal and a baseline detection motion signal, each including a motion value indicative of the sensed motion detection; a touch detection circuit coupled to the capacitive touch sensor and the motion sensor, the touch detection circuit configured to process the values indicative of sensed capacitance and make a hovering detection and a touching detection, wherein the hovering detection is correlated with the motion value of the baseline detection motion signal and the touching detection is correlated with the motion value of the touching detection correlated motion signal; and wherein the touch detection circuit further configured to generate an output signal including each of the motion value correlated in time with a detection indication of the at least one hovering detection and touching detection and the values indicative of sensed capacitance and an impulsive strength determined from the correlated motion value of the baseline detection motion signal and the correlated motion value of the touching detection correlated motion signal.