| 摘要 |
A portable electronic device (101) includes a motion sensor (619) and a controller (603). The motion sensor (619) detects an alternating signature motion (203) of a limb (103) of the user (105) about a virtual axis (201) corresponding to the limb. The motion sensor (619) may be an accelerometer capable of detecting three dimensional acceleration. The accelerometer detects acceleration along X, Y and/or Z axes (413, 415, 505), in which acceleration peaks (1105, 1107, 1205, 1207) of the X and Z axes (413, 505) alternate with each other and acceleration of the Y axis (415) remains substantially steady relative to the X and Y axes. The portable electronic device (101) controls at least one function based on the detected alternating signature motion (203) of the limb (103) and/or acceleration along the X, Y and/or Z axes (413, 415, 505). |
