Mobile device and gesture determination method

摘要

An exemplary embodiment provides a mobile device. The mobile device includes a display panel, a touch panel, and a processing unit. The display panel displays images. The touch panel detects a gesture and receives a sensing signal corresponding to the gesture, wherein the touch panel further calculates at least one contact point produced by the gesture according to the sensing signal, and produces at least one trigger signal according to the contact point. The processing unit operates at a first operating frequency when the mobile device is in a normal operating mode, and operates at a second operating frequency lower than the first operating frequency when the mobile device is in a hibernate mode, wherein the mobile device turns off the processing unit and the display panel in the hibernate mode, and the touch panel continues to detect the gesture in the hibernate mode.

主权项

1. A mobile device, comprising:
a display panel, configured to display images; a touch panel, configured to detect a gesture and receive a sensing signal corresponding to the gesture, wherein the touch panel is further configured to calculate at least one contact point produced by the gesture according to the sensing signal, and produce at least one trigger signal according to the contact point, wherein the touch panel is further configured to detect the gesture at a first frequency in a normal operating mode; and a processing unit, configured to operate at a first operating frequency when the mobile device is in the normal operating mode, and operate at a second operating frequency lower than the first operating frequency when the mobile device is in a hibernate mode, the touch panel continues to detect the gesture at a second frequency in the hibernate mode, and the second frequency is lower than the first frequency; a determination unit configured to determine whether the sensing signal produces a predetermined number of the trigger signals and whether the trigger signals last for a predetermined period, when the mobile device is in the hibernate mode, determine whether the at least one contact point corresponding to the gesture constitute a natural gesture meeting ergonomic standards according to positions of the at least one contact point represented by the trigger signals when the sensing signal produces the predetermined number of the trigger signals and the trigger signals last for the predetermined period, wherein the predetermined number is four or five, calculate a barycenter of the trigger signals according to the positions of the at least one contact point represented by the trigger signals, and determine whether the at least one contact point corresponding to the gesture constitute the natural gesture according to the barycenter; calculate a plurality of distances between the trigger signals and the barycenter; and compare the longest distance of the calculated distances with the other distances of which to determine whether the contact points corresponding to the gesture constitute the natural gesture.