Motion-based view scrolling with augmented tilt control

Abstract

Systems and methods for motion-based scrolling of contents view on a display with a screen view that is smaller than the contents view are described. During an augmented tilt control mode, scrolling follows changes in a primary tilt direction aligned with the scrolling direction, while a secondary tilt along a direction perpendicular to the scrolling direction is used to modify at least one scrolling control parameter. The scrolling control may follow a Proportional Scroll mode, where the primary tilt directly controls the screen view position over the contents view, or follow a Dynamic Scroll mode, where the primary tilt controls the scrolling speed. In some implementations, the scroll mode is determined automatically based on the magnification of the contents view. A predefined gestured in the secondary tilt may temporarily override the scroll mode selection. In some implementations with multi-directional scrolling, the current scrolling direction may be temporarily captured during the augmented tilt control mode so that tilt gestures along the direction perpendicular to the captured scrolling direction may be used to modify at least one control parameters.