CONTENT BOUNDARY SIGNALING TECHNIQUES

• US 20110090255A1
• Filed: 10/16/2009
• Published: 04/21/2011
• Est. Priority Date: 10/16/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Wilson, Diego A., Rogers, Sean S., Nielsen, Per O.
• Granted Patent: US 8,624,925 B2
• Time in Patent Office: Days
• US Class Current: 345/647
• CPC Class Codes: G06F 3/04817 using icons graphical or visual programming using iconic symbols G06F8/34
• CPC Class Codes: G06F 3/0485 Scrolling or panning
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G06T 1/00 General purpose image data processing

Abstract

Methods and devices provide a user interface that provides visual cues when a document pan or scroll has reached an end or boundary by distorting the document image in response to further user inputs. The image distortion functionality may include shrinking, stretching, accordion expansion, or bouncing of a document image. The degree of image distortion may be proportional to the distance that a user input would have the document move beyond the encountered boundary. When a boundary of a document image is reached during a rapid pan or scroll, a bouncing image distortion may be applied to the document image to inform the user that the document reached a boundary during the movement.

Claims

1. A method for implementing a user interface function on a computing device, comprising:

detecting a document image movement gesture input on a user interface device of the computing device;

determining a document image movement of a document displayed on the computing device based on the movement gesture input;

determining whether a boundary of the document is reached based on the determined movement of the document image; and

distorting an image of the document displayed on the computing device when a boundary of the document image is reached.

2. The method of claim 1, wherein distorting the image of the document involves one of stretching the document image, shrinking the document image, and bouncing the document image.

3. The method of claim 1, wherein distorting the image of the document includes distorting the document image along an axis selected from a horizontal axis, a vertical axis, a diagonal axis, and both the horizontal and vertical axes.

4. The method of claim 1, wherein distorting the image of the document includes distorting the document image in an accordion style by inserting space between display image elements without distorting the display image elements.

5. The method of claim 1, wherein:

the user interface device is a touch surface; and

the document image movement gesture input is a touch event detected on the touch surface.

6. The method of claim 5, wherein the touch surface is a touchscreen display.

7. The method of claim 5, wherein distorting the image of the document comprises distorting the document image based on a distance that the touch event travels after the boundary of the document is reached.

8. The method of claim 5, further comprising:

initiating a rapid pan or scroll animation if the touch event represents a flick gesture;

determining whether an end of the rapid pan or scroll animation has been reached; and

animating the distortion of the document image if the boundary of the document image is reached before the end of the rapid pan or scroll animation is reached.

9. The method of claim 8, wherein animating the distortion of the document image comprises animating a bouncing movement of the document image.

10. The method of claim 8, wherein animating the distortion of the document image comprises animating a bouncing movement and a compression distortion of the document image.

11. The method of claim 1, further comprising:

determining a distortion function to be applied to distort the document image; and

calculating a distortion factor based on a distance the document image movement gesture input would move the document image after the boundary is reached,

wherein distorting the document image comprises applying the determined distortion function to the display image based on the calculated distortion factor.

12. The method of claim 11, further comprising:

determining whether a maximum level of display image distortion is reached; and

reverting the display image back to its original form if the maximum level of display image distortion is reached.

13. A computing device, comprising:

a processor;

a display coupled to the processor; and

a user input device coupled to the processor;

wherein the processor is configured with processor-executable instructions to perform operations comprising;

detecting a document image movement gesture input on a user interface device of the computing device;

determining a document image movement of a document displayed on the computing device based on the movement gesture input;

determining whether a boundary of the document is reached based on the determined movement of the document image; and

distorting an image of the document displayed on the computing device when a boundary of the document image is reached.

14. The computing device of claim 13, wherein the processor is configured with processor-executable instructions such that distorting the image of the document involves one of stretching the document image, shrinking the document image, and bouncing the document image.

15. The computing device of claim 13, wherein the processor is configured with processor-executable instructions such that distorting the image of the document includes distorting the document image along an axis selected from a horizontal axis, a vertical axis, a diagonal axis, and both the horizontal and vertical axes.

16. The computing device of claim 13, wherein the processor is configured with processor-executable instructions such that distorting the image of the document includes distorting the document image in an accordion style by inserting space between display image elements without distorting the display image elements.

17. The computing device of claim 13, wherein:

the user interface device is a touch surface; and

the document image movement gesture input is a touch event detected on the touch surface.

18. The computing device of claim 17, wherein the touch surface is a touchscreen display.

19. The computing device of claim 17, wherein the processor is configured with processor-executable instructions such that distorting the image of the document comprises distorting the document image based on a distance that the touch event travels image after the boundary of the document is reached.

20. The computing device of claim 17, wherein the processor is configured with processor-executable instructions to perform operations further comprising:

initiating a rapid pan or scroll animation if the touch event represents a flick gesture;

determining whether an end of the rapid pan or scroll animation has been reached; and

animating the distortion of the document image if the boundary of the document image is reached before the end of the rapid pan or scroll animation is reached.

21. The computing device of claim 20, wherein the processor is configured with processor-executable instructions such that animating the distortion of the document image comprises animating a bouncing movement of the document image.

22. The computing device of claim 20, wherein the processor is configured with processor-executable instructions such that animating the distortion of the document image comprises animating a bouncing movement and a compression distortion of the document image.

23. The computing device of claim 13, wherein the processor is configured with processor-executable instructions to perform operations further comprising:

determining a distortion function to be applied to distort the document image; and

calculating a distortion factor based on a distance the document image movement gesture input would move the document image after the boundary is reached,

wherein distorting the document image comprises applying the determined distortion function to the display image based on the calculated distortion factor.

24. The computing device of claim 23, wherein the processor is configured with processor-executable instructions to perform operations further comprising:

determining whether a maximum level of display image distortion is reached; and

reverting the display image back to its original form if the maximum level of display image distortion is reached.

25. A computing device, comprising:

means for displaying a document image;

means for detecting a document image movement gesture input;

means for determining a document image movement of a document displayed on the means for displaying a document image based on the movement gesture input;

means for determining whether a boundary of the document is reached based on the determined movement of the document image; and

means for distorting an image of the document displayed on the means for displaying a document image when a boundary of the document image is reached.

26. The computing device of claim 25, wherein means for distorting the image of the document comprises one of means for stretching the document image, means for shrinking the document image, and means for bouncing the document image.

27. The computing device of claim 25, wherein means for distorting the image of the document comprises means for distorting the document image along an axis selected from a horizontal axis, a vertical axis, a diagonal axis, and both the horizontal and vertical axes.

28. The computing device of claim 25, wherein means for distorting the image of the document comprises means for distorting the document image in an accordion style by inserting space between display image elements without distorting the display image elements.

29. The computing device of claim 25, wherein:

means for receiving a user interface input comprises means for receiving a user input touch on a surface; and

the document image movement gesture input is a touch event detected on the means for receiving a user input touch on a surface.

30. The computing device of claim 29, wherein means for receiving a user input touch on a surface comprises means for receiving a user input touch on a display.

31. The computing device of claim 29, wherein means for distorting the image of the document comprises means for distorting the document image based on a distance that the touch event travels after the boundary of the document is reached.

32. The computing device of claim 29, further comprising:

means for initiating a rapid pan or scroll animation if the touch event represents a flick gesture;

means for determining whether an end of the rapid pan or scroll animation has been reached; and

means for animating the distortion of the document image if the boundary of the document image is reached before the end of the rapid pan or scroll animation is reached.

33. The computing device of claim 32, wherein means for animating the distortion of the document image comprises means for animating a bouncing movement of the document image.

34. The computing device of claim 32, wherein means for animating the distortion of the document image comprises means for animating a bouncing movement and a compression distortion of the document image.

35. The computing device of claim 25, further comprising:

means for determining a distortion function to be applied to distort the document image; and

means for calculating a distortion factor based on a distance the document image movement gesture input would move the document image after the boundary is reached,

wherein means for distorting the document image comprises means for applying the determined distortion function to the display image based on the calculated distortion factor.

36. The computing device of claim 35, further comprising:

means for determining whether a maximum level of display image distortion is reached; and

means for reverting the display image back to its original form if the maximum level of display image distortion is reached.

37. A computer-readable storage medium having stored thereon computer-executable instructions are configured to cause a computer processor to perform operations, comprising:

detecting a document image movement gesture input on a user interface device;

determining a document image movement of a document based on the movement gesture input;

determining whether a boundary of the document is reached based on the determined movement of the document image; and

distorting an image of the displayed document when a boundary of the document image is reached.

38. The computer-readable storage medium of claim 37, wherein the stored computer-executable instructions are configured such that distorting the image of the document involves one of stretching the document image, shrinking the document image, and bouncing the document image.

39. The computer-readable storage medium of claim 37, wherein the stored computer-executable instructions are configured such that distorting the image of the document includes distorting the document image along an axis selected from a horizontal axis, a vertical axis, a diagonal axis, and both the horizontal and vertical axes.

40. The computer-readable storage medium of claim 37, wherein the stored computer-executable instructions are configured such that distorting the image of the document includes distorting the document image in an accordion style by inserting space between display image elements without distorting the display image elements.

41. The computer-readable storage medium of claim 37, wherein the stored computer-executable instructions are configured such that the document image movement gesture input is a touch event detected on a touch surface.

42. The computer-readable storage medium of claim 37, wherein the stored computer-executable instructions are configured such that the document image movement gesture input is a touch event detected on a touchscreen display.

43. The computer-readable storage medium of claim 42, wherein the stored computer-executable instructions are configured such that distorting the image of the document comprises distorting the document image based on a distance that the touch event travels after the boundary of the document is reached.

44. The computer-readable storage medium of claim 42, wherein the stored computer-executable instructions are configured to cause a computer to perform operations further comprising:

initiating a rapid pan or scroll animation if the touch event represents a flick gesture;

determining whether an end of the rapid pan or scroll animation has been reached; and

animating the distortion of the document image if the boundary of the document image is reached before the end of the rapid pan or scroll animation is reached.

45. The computer-readable storage medium of claim 44, wherein the stored computer-executable instructions are configured such that animating the distortion of the document image comprises animating a bouncing movement of the document image.

46. The computer-readable storage medium of claim 44, wherein the stored computer-executable instructions are configured such that animating the distortion of the document image comprises animating a bouncing movement and a compression distortion of the document image.

47. The computer-readable storage medium of claim 37, wherein the stored computer-executable instructions are configured to cause a computer to perform operations further comprising:

determining a distortion function to be applied to distort the document image; and

calculating a distortion factor based on a distance the document image movement gesture input would move the document image after the boundary is reached,

wherein distorting the document image comprises applying the determined distortion function to the display image based on the calculated distortion factor.

48. The computer-readable storage medium of claim 47, wherein the stored computer-executable instructions are configured to cause a computer to perform operations further comprising:

determining whether a maximum level of display image distortion is reached; and

reverting the display image back to its original form if the maximum level of display image distortion is reached.