Motion-based view scrolling system with proportional and dynamic modes

摘要

The present invention provides a system and methods for motion-based scrolling of a relatively large contents view on an electronic device with a relatively small screen display. The user controls the scrolling by changing the device's tilt relative to a baseline tilt. The scrolling control can follow a Proportional Scroll mode, where the relative tilt directly controls the screen position over the contents view, or a Dynamic Scroll mode where the relative tilt controls the scrolling speed. The present invention obtains a criterion for automatically selecting the best scrolling mode when the dimensions of the contents view change. The baseline tilt is updated when the screen reaches an edge of the contents view to eliminate the creation of a non responsive range of tilt changes when the user changes tilt direction.

主权项

1. A system for motion-based view scrolling of a contents view of an electronic device, comprising:
a screen display for displaying at least a portion of said contents view; a motion sensor configured to sense a first tilt angle of said device along a first direction and to sense a second tilt angle of said device along a second direction; one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising:
instructions for generating a first and second tilt signals, said first tilt signal is indicative to said first tilt angle and said second tilt signal is indicative to said second tilt angle;instructions for determining, when scrolling activity is initiated, a first and second scrolling ranges along said first and second directions respectively, and configuring a first and a second response graphs, said first response graph maps a first tilt rotation range onto said first scrolling range, said second response graph maps a second tilt rotation range onto said second scrolling range;instructions for a first direction scrolling of said contents view wherein said screen display is placed at a position within said first scrolling range mapped from said first tilt angle by said first response graph; andinstructions for a second direction scrolling of said contents view simultaneously with said first direction scrolling wherein said screen display is placed at a position within said second scrolling range mapped from said second tilt angle by said second response graph.