Tilt-Based View Scrolling with Baseline Update for Proportional and Dynamic Modes

A computer-implemented method comprising:

• displaying at least a portion of a contents view on a screen display;
• performing a proportional scroll, when scrolling is activated and said proportional scroll mode is selected, wherein the position of the screen display along the horizontal or vertical directions over said contents view is directly related to the horizontal or vertical tilt of said screen display relative to a corresponding horizontal or vertical baseline tilt;
• performing a dynamic scroll, when scrolling is activated and said dynamic scroll mode is selected, wherein the scrolling speed of the screen display along the horizontal or vertical directions over said contents view is computed from the horizontal or vertical tilt of said screen display relative to a corresponding horizontal or vertical baseline tilt;
• and
• selecting said proportional scroll mode or said dynamic scroll mode.

A non-transitory computer readable storage medium encoded with a computer program, the program comprising instructions that when executed by one or more processors cause the one or more processors to perform operations comprising:

• displaying at least a portion of a contents view on a screen display;
• performing a proportional scroll, when scrolling is activated and said proportional scroll mode is selected, wherein the screen display position over said contents view along a scrolling direction is proportional to the tilt of the screen display relative to a corresponding baseline tilt along said scrolling direction;
• performing a dynamic scroll, when scrolling is activated and said dynamic scroll mode is selected, wherein the scrolling speed of the screen display along a scrolling direction over said contents view is computed from the tilt of the screen display relative to a corresponding baseline tilt along said scrolling direction;
• and
• selecting said proportional scroll mode or said dynamic scroll mode.

A system comprising:

• one or more processors;
• a screen display;
• a display interface module controlling the operation of said screen display and coupled to said one or more processors, said display interface module configured to display at least a portion of a contents view;
• a motion sensor operatively coupled to said one or more processors, said motion sensor is configured to provide data indicative of the tilt of said screen display;
• 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:
• selecting a reference baseline tilt along said scrolling direction when a tilt-based scrolling is started;
• performing a tilt-based scrolling of said screen display over said contents view along said scrolling direction while scrolling is activated, wherein scrolling is determined by the relative tilt of said screen display along said scrolling direction, said relative tilt is the difference between the tilt of said screen display along said scrolling direction and said reference baseline tilt;
• and
• replacing said reference baseline tilt with a new baseline tilt along said scrolling direction when the screen display reaches a predefined area of said contents view.