| 摘要 |
A portable computing device (10) with a display screen (26) that may be scrolled and/or zoomed in response to changes in the spatial orientation of the computing device. Changes in the spatial orientation of the computing device are sensed by accelerometers (20) contained in the device. Software converts signals sent by the accelerometers to scrolling or zooming commands that scroll and/or zoom the display screen. Motion of the computing device in the plane of the display screen of the computing device results in scrolling the display screen in the opposing direction of the motion of the computing device a distance greater than the distance the computing device is moved. Motion of the computing device perpendicular to the plane of the display screen zooms the display screen in or out. Motion of the computing device toward the user results in the display screen being zoomed in to reveal greater detail. Motion of the computing device away from the user results in the display screen being zoomed out to reveal more content.
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