Method, circuit, and system for hover and gesture detection with a touch screen

摘要

According to one embodiment of the present disclosure, a touch controller is adapted to be coupled to a touch screen and to a motion sensor. The touch controller is operable in response to a signal from the motion sensor indicating a first motion to switch from a hover event sensing mode of operation to a gesture event sensing mode of operation. In one embodiment, the touch controller is operable in the hover event sensing mode of operation to detect a first hover event and is thereafter operable, in response to the signal from the motion sensor indicating a first motion has occurred, to switch to the gesture event sensing mode of operation and detect a first gesture event.

主权项

1. A touch controller configured to be coupled to a touch screen and to be coupled to a motion sensor, the touch controller further configured, in response to a signal from the motion sensor indicating a first motion, to switch from a hover event sensing mode of operation to a gesture event sensing mode of operation, wherein the touch controller is configured, in the hover event sensing mode of operation, to detect a first hover event and is configured, in response to the signal from the motion sensor indicating a first motion has occurred, to switch to the gesture event sensing mode of operation and detect a first gesture event, wherein the first hover event corresponds to an interface input where an input device is stationary or moving and within a sensing range from a surface of a touch display of the touch screen but is not in contact with the surface, and wherein the first gesture event corresponds to an interface input where the input device is moving in a predefined constrain and is within the sensing range of the surface but not in contact with the surface.