Physical-virtual interpolation

• US 7,463,270 B2
• Filed: 02/10/2006
• Issued: 12/09/2008
• Est. Priority Date: 02/10/2006
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Duncan, , Vale, Peter O.
• Primary Examiner(s): SAJOUS, WESNER
• Application Number:
  US11/350,854
• Publication Number:
  US 20070188444A1
• Time in Patent Office: 1,033 Days
• Field of Search: 345/7, 345/156, 345619-624, 345629-630, 345/652, 345/606, 345473-475, 715/700, 715/706, 715/726, 715/757, 715/788, 715/856, 715798-799, 715/866, 358500-506, 358408-409, 358/412, 358/452, 358/471, 358/474, 358486-488, 382/312, 382/318, 348 94-107
• US Class Current: 345/619
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A display system and method for use in controlling movement of a virtual image version of a physical object is described. A physical object may be placed on or near a display surface, which may sense the presence of the object and display a virtual image version of the object. In response to movement of the physical object, the virtual image may move as well. Movement speed of the virtual image may be capped at a maximum speed, so that if the physical object is moved too quickly, the image will remain moving at a constant maximum speed. Movement effects, such as blurring, fading, animation, etc. may be applied to the image during the movement. The movement may change direction as the physical object is detected in different positions, and the movement effects may be applied to smooth the change in direction (e.g., curving trajectory).

Claims

1. One or more computer-readable storage media, storing one or more computer-executable instructions for performing the following steps:

performing a first scanning to detect the location of a physical object with respect to a display surface;

initially displaying, on the display surface, an image as a virtual representation of said object based on the first scanning;

subsequently performing a second scanning to detect the location of the physical object with respect to the display surface;

identifying a difference in position of the physical object in the first and second scans;

moving the image from a first location towards a second location, the first and second locations corresponding to positions of the object during said first and second scans, respectively; and

limiting a speed of motion of the image during the moving step to a maximum speed.

2. The one or more computer-readable storage media of claim 1, wherein said display surface is a horizontal surface, and said physical object is on top of said surface.

3. The one or more computer-readable storage media of claim 1, wherein said first and second scannings are performed periodically according to a user-configured scanning period.

4. The one or more computer-readable storage media of claim 1, wherein said step of initially displaying places said image at a location on said surface that is offset from said physical object.

5. The one or more computer-readable storage media of claim 4, wherein said offset includes a directional offset and a distance offset from a position underneath said physical object.

6. The one or more computer-readable storage media of claim 1, wherein said scans are separated by at least one intermediate scan.

7. The one or more computer-readable storage media of claim 1, further including computer executable instructions for modifying an appearance of said image during said moving.

8. The one or more computer-readable storage media of claim 7, wherein said modification of said appearance includes an animation effect.

9. The one or more computer-readable storage media of claim 7, wherein said modification of said appearance includes a fading effect.

10. The one or more computer-readable storage media of claim 9, wherein said fading effect includes adjusting a transparency value of said image.

11. The one or more computer-readable storage media of claim 1, wherein said moving between said first and second locations is along a predetermined path other than a straight line between the first and second locations.

12. The one or more computer-readable storage media of claim 1, wherein a speed of said moving varies based on a distance between said image and said second location.

13. The one or more computer-readable storage media of claim 1, wherein said maximum speed is a user-configured software setting.

14. The one or more computer-readable storage media of claim 1, wherein said moving dynamically adjusts to move towards the object'"'"'s current position as new scans are performed.

15. The one or more computer-readable storage media of claim 14, wherein during said dynamic adjustment, a transition animation is used for a change in direction.

16. The one or more computer-readable storage media of claim 1, further comprising computer-executable instructions for maintaining a data structure of waypoints for said moving, said waypoints being established by position of said object during said periodic scanning.

17. A visual interpolation method on a computer processing system having a display, comprising the steps of:

storing a predetermined maximum speed for moving a displayed image across a display;

detecting, by said computer processing system, first and second positions of a physical object as it is moved in relation to said display;

moving, across said display, a displayed image corresponding to said physical object in a direction based on said first and second positions, wherein

when said physical object is moved at a speed below said predetermined maximum speed, said moving of said displayed image occurs at a speed corresponding to said speed of said physical object; and

when said physical object is moved at a speed above said predetermined maximum speed, said moving of said displayed image occurs at said predetermined maximum speed, said maximum speed being lower than said speed of said physical object.

18. The method of claim 17, further comprising the step of adding a plurality of waypoints to a movement path of said image based on positions of said physical object detected as it is moved in relation to said display.

19. The method of claim 17, further comprising the step of applying a movement effect to said image during said moving.

20. A computing device, comprising:

one or more processors and one or more memories;

a horizontal display surface, coupled to one or more of said processors, and configured to display a computer-generated image; and

a camera configured to detect the presence of a physical object in relation to said display surface, wherein said one or more memories stores computer-executable instructions for causing said one or more processors to;

detect the presence of said physical object;

display a virtual image version of said physical object on said display surface; and

move said virtual image version of said physical object in response to movement of said physical object, wherein said movement corresponds to movement of said physical object until a maximum speed is reached by said image, at which time said movement remains at said maximum speed even if said physical object is moved at a faster speed.